upload http

JIRA: BOTTLENECK-10

Change-Id: I7598427ff904df438ce77c2819ee48ac75ffa8da
Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>

79 files changed, 20865 insertions, 0 deletions

diff --git a/rubbos/app/httpd-2.0.64/server/mpm/.deps b/rubbos/app/httpd-2.0.64/server/mpm/.deps
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/.deps
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/MPM.NAMING b/rubbos/app/httpd-2.0.64/server/mpm/MPM.NAMING
new file mode 100644
index 00000000..83c0694d
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/MPM.NAMING
@@ -0,0 +1,15 @@
+
+The following MPMs currently exist:
+
+  prefork ....... Multi  Process Model with Preforking (Apache 1.3)
+  perchild ...... Multi  Process Model with Threading.
+                  Constant number of processes, variable number of threads
+                  each child process can have a different uid/gid.  
+  mpmt_os2 ...... Multi Process Model with Threading on OS/2
+                  Constant number of processes, variable number of threads.
+                  One acceptor thread per process, multiple workers threads.
+  winnt ......... Single Process Model with Threading on Windows NT
+  worker ........ Multi Process model with threads.  One acceptor thread,
+                  multiple worker threads.
+  netware ....... Multi-threaded MPM for Netware
+  beos .......... Single Process Model with Threading on BeOS
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/Makefile b/rubbos/app/httpd-2.0.64/server/mpm/Makefile
new file mode 100644
index 00000000..b1f2ed46
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/Makefile
@@ -0,0 +1,9 @@
+top_srcdir   = /bottlenecks/rubbos/app/httpd-2.0.64
+top_builddir = /bottlenecks/rubbos/app/httpd-2.0.64
+srcdir       = /bottlenecks/rubbos/app/httpd-2.0.64/server/mpm
+builddir     = /bottlenecks/rubbos/app/httpd-2.0.64/server/mpm
+VPATH        = /bottlenecks/rubbos/app/httpd-2.0.64/server/mpm
+
+SUBDIRS = $(MPM_SUBDIR_NAME)
+
+include $(top_builddir)/build/rules.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/Makefile.in
new file mode 100644
index 00000000..2decbde6
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/Makefile.in
@@ -0,0 +1,4 @@
+
+SUBDIRS = $(MPM_SUBDIR_NAME)
+
+include $(top_builddir)/build/rules.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/beos/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/beos/Makefile.in
new file mode 100644
index 00000000..3f88b041
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/beos/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libbeos.la
+LTLIBRARY_SOURCES = beos.c 
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/beos/beos.c b/rubbos/app/httpd-2.0.64/server/mpm/beos/beos.c
new file mode 100644
index 00000000..51a17c3e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/beos/beos.c
@@ -0,0 +1,1159 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* The new BeOS MPM!
+ *
+ * This one basically is a single process multi threaded model, but 
+ * I couldn't be bothered adding the spmt_ to the front of the name!
+ * Anyway, this is still under development so it isn't yet the default
+ * choice.
+ */
+ 
+#define CORE_PRIVATE 
+ 
+#include <kernel/OS.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <signal.h>
+
+#include "apr_strings.h"
+#include "apr_portable.h"
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"	/* for read_config */ 
+#include "http_core.h"		/* for get_remote_host */ 
+#include "http_connection.h"
+#include "ap_mpm.h"
+#include "beosd.h"
+#include "ap_listen.h"
+#include "scoreboard.h" 
+#include "mpm_common.h"
+#include "mpm.h"
+#include "mpm_default.h"
+#include "apr_thread_mutex.h"
+#include "apr_poll.h"
+
+extern int _kset_fd_limit_(int num);
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons:
+ * 1) in case something goes seriously wrong, we want to stop the server starting
+ *    threads ad infinitum and crashing the server (remember that BeOS has a 192
+ *    thread per team limit).
+ * 2) it keeps the size of the scoreboard file small
+ *    enough that we can read the whole thing without worrying too much about
+ *    the overhead.
+ */
+
+/* we only ever have 1 main process running... */ 
+#define HARD_SERVER_LIMIT 1
+
+/* Limit on the threads per process.  Clients will be locked out if more than
+ * this  * HARD_SERVER_LIMIT are needed.
+ *
+ * We keep this for one reason it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifdef NO_THREADS
+#define HARD_THREAD_LIMIT 1
+#endif
+#ifndef HARD_THREAD_LIMIT
+#define HARD_THREAD_LIMIT 50 
+#endif
+
+/*
+ * Actual definitions of config globals
+ */
+
+static int ap_threads_to_start=0;
+static int ap_max_requests_per_thread = 0;
+static int min_spare_threads=0;
+static int max_spare_threads=0;
+static int ap_thread_limit=0;
+static int num_listening_sockets = 0;
+static apr_socket_t ** listening_sockets;
+apr_thread_mutex_t *accept_mutex = NULL;
+
+static apr_pool_t *pconf;		/* Pool for config stuff */
+static apr_pool_t *pchild;		/* Pool for httpd child stuff */
+
+static int server_pid; 
+static int mpm_state = AP_MPMQ_STARTING;
+
+/* Keep track of the number of worker threads currently active */
+static int worker_thread_count;
+apr_thread_mutex_t *worker_thread_count_mutex;
+
+/* The structure used to pass unique initialization info to each thread */
+typedef struct {
+    int slot;
+    apr_pool_t *tpool;
+} proc_info;
+
+static void check_restart(void *data);
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts.  We use 
+ * this value to optimize routines that have to scan the entire scoreboard.
+ */
+int ap_max_child_assigned = -1;
+int ap_max_threads_limit = -1;
+
+static apr_socket_t *udp_sock;
+static apr_sockaddr_t *udp_sa;
+
+/* shared http_main globals... */
+
+server_rec *ap_server_conf;
+
+/* one_process */
+static int one_process = 0;
+
+#ifdef DEBUG_SIGSTOP
+int raise_sigstop_flags;
+#endif
+
+/* a clean exit from a child with proper cleanup 
+   static void clean_child_exit(int code) __attribute__ ((noreturn)); */
+static void clean_child_exit(int code)
+{
+    if (pchild)
+        apr_pool_destroy(pchild);
+    exit(code);
+}
+
+/* handle all varieties of core dumping signals */
+static void sig_coredump(int sig)
+{
+    chdir(ap_coredump_dir);
+    signal(sig, SIG_DFL);
+    kill(server_pid, sig);
+    /* At this point we've got sig blocked, because we're still inside
+     * the signal handler.  When we leave the signal handler it will
+     * be unblocked, and we'll take the signal... and coredump or whatever
+     * is appropriate for this particular Unix.  In addition the parent
+     * will see the real signal we received -- whereas if we called
+     * abort() here, the parent would only see SIGABRT.
+     */
+}
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+static int volatile child_fatal;
+ap_generation_t volatile ap_my_generation = 0;
+
+/*
+ * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
+ * functions to initiate shutdown or restart without relying on signals. 
+ * Previously this was initiated in sig_term() and restart() signal handlers, 
+ * but we want to be able to start a shutdown/restart from other sources --
+ * e.g. on Win32, from the service manager. Now the service manager can
+ * call ap_start_shutdown() or ap_start_restart() as appropiate.  Note that
+ * these functions can also be called by the child processes, since global
+ * variables are no longer used to pass on the required action to the parent.
+ *
+ * These should only be called from the parent process itself, since the
+ * parent process will use the shutdown_pending and restart_pending variables
+ * to determine whether to shutdown or restart. The child process should
+ * call signal_parent() directly to tell the parent to die -- this will
+ * cause neither of those variable to be set, which the parent will
+ * assume means something serious is wrong (which it will be, for the
+ * child to force an exit) and so do an exit anyway.
+ */
+
+static void ap_start_shutdown(void)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+ 
+    if (shutdown_pending == 1) {
+	/* Um, is this _probably_ not an error, if the user has
+	 * tried to do a shutdown twice quickly, so we won't
+	 * worry about reporting it.
+	 */
+	return;
+    }
+    shutdown_pending = 1;
+}
+
+/* do a graceful restart if graceful == 1 */
+static void ap_start_restart(int graceful)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+
+    if (restart_pending == 1) {
+        /* Probably not an error - don't bother reporting it */
+        return;
+    }
+    restart_pending = 1;
+    is_graceful = graceful;
+}
+
+static void sig_term(int sig)
+{
+    ap_start_shutdown();
+}
+
+static void restart(int sig)
+{
+    ap_start_restart(sig == AP_SIG_GRACEFUL);
+}
+
+static void tell_workers_to_exit(void)
+{
+    apr_size_t len;
+    int i = 0;
+
+    mpm_state = AP_MPMQ_STOPPING;
+
+    for (i = 0 ; i < ap_max_child_assigned; i++){
+        len = 4;
+        if (apr_sendto(udp_sock, udp_sa, 0, "die!", &len) != APR_SUCCESS)
+            break;
+    }   
+}
+
+static void set_signals(void)
+{
+    struct sigaction sa;
+
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+
+    if (!one_process) {
+	sa.sa_handler = sig_coredump;
+
+	if (sigaction(SIGSEGV, &sa, NULL) < 0)
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGSEGV)");
+	if (sigaction(SIGBUS, &sa, NULL) < 0)
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGBUS)");
+	if (sigaction(SIGABRT, &sa, NULL) < 0)
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGABRT)");
+	if (sigaction(SIGILL, &sa, NULL) < 0)
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGILL)");
+	sa.sa_flags = 0;
+    }
+    sa.sa_handler = sig_term;
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)");
+    
+    sa.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &sa, NULL) < 0)
+    	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGPIPE)");
+
+    /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy 
+     * processing one */
+    sigaddset(&sa.sa_mask, SIGHUP);
+    sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
+    sa.sa_handler = restart;
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+    	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");
+    if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(" AP_SIG_GRACEFUL_STRING ")");
+}
+
+/*****************************************************************
+ * Here follows a long bunch of generic server bookkeeping stuff...
+ */
+
+int ap_graceful_stop_signalled(void)
+{
+    /* XXX - Does this really work? - Manoj */
+    return is_graceful;
+}
+
+/*****************************************************************
+ * Child process main loop.
+ */
+
+static void process_socket(apr_pool_t *p, apr_socket_t *sock,
+                           int my_child_num, apr_bucket_alloc_t *bucket_alloc)
+{
+    conn_rec *current_conn;
+    long conn_id = my_child_num;
+    int csd;
+    ap_sb_handle_t *sbh;
+
+    (void)apr_os_sock_get(&csd, sock);
+    
+    if (csd >= FD_SETSIZE) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL,
+                     "filedescriptor (%u) larger than FD_SETSIZE (%u) "
+                     "found, you probably need to rebuild Apache with a "
+                     "larger FD_SETSIZE", csd, FD_SETSIZE);
+        apr_socket_close(sock);
+        return;
+    }
+
+    ap_create_sb_handle(&sbh, p, 0, my_child_num);
+    current_conn = ap_run_create_connection(p, ap_server_conf,
+                                            sock, conn_id, sbh,
+                                            bucket_alloc);
+
+    if (current_conn) {
+        ap_process_connection(current_conn, sock);
+        ap_lingering_close(current_conn);
+    }
+}
+
+static int32 worker_thread(void * dummy)
+{
+    proc_info * ti = dummy;
+    int child_slot = ti->slot;
+    apr_pool_t *tpool = ti->tpool;
+    apr_allocator_t *allocator;
+    apr_socket_t *csd = NULL;
+    apr_pool_t *ptrans;		/* Pool for per-transaction stuff */
+    apr_bucket_alloc_t *bucket_alloc;
+    apr_socket_t *sd = NULL;
+    apr_status_t rv = APR_EINIT;
+    int srv , n;
+    int curr_pollfd = 0, last_pollfd = 0;
+    sigset_t sig_mask;
+    int requests_this_child = ap_max_requests_per_thread;
+    apr_pollfd_t *pollset;
+    /* each worker thread is in control of its own destiny...*/
+    int this_worker_should_exit = 0; 
+    free(ti);
+
+    mpm_state = AP_MPMQ_STARTING;
+
+    on_exit_thread(check_restart, (void*)child_slot);
+          
+    /* block the signals for this thread */
+    sigfillset(&sig_mask);
+    sigprocmask(SIG_BLOCK, &sig_mask, NULL);
+
+    apr_allocator_create(&allocator);
+    apr_allocator_max_free_set(allocator, ap_max_mem_free);
+    apr_pool_create_ex(&ptrans, tpool, NULL, allocator);
+    apr_allocator_owner_set(allocator, ptrans);
+
+    apr_pool_tag(ptrans, "transaction");
+
+    bucket_alloc = apr_bucket_alloc_create_ex(allocator);
+
+    apr_thread_mutex_lock(worker_thread_count_mutex);
+    worker_thread_count++;
+    apr_thread_mutex_unlock(worker_thread_count_mutex);
+
+    (void) ap_update_child_status_from_indexes(0, child_slot, SERVER_STARTING,
+                                               (request_rec*)NULL);
+                                  
+    apr_poll_setup(&pollset, num_listening_sockets + 1, tpool);
+    for(n=0 ; n <= num_listening_sockets ; n++)
+        apr_poll_socket_add(pollset, listening_sockets[n], APR_POLLIN);
+
+    mpm_state = AP_MPMQ_RUNNING;
+
+    while (1) {
+        /* If we're here, then chances are (unless we're the first thread created) 
+         * we're going to be held up in the accept mutex, so doing this here
+         * shouldn't hurt performance.
+         */
+
+        this_worker_should_exit |= (ap_max_requests_per_thread != 0) && (requests_this_child <= 0);
+        
+        if (this_worker_should_exit) break;
+
+        (void) ap_update_child_status_from_indexes(0, child_slot, SERVER_READY,
+                                                   (request_rec*)NULL);
+
+        apr_thread_mutex_lock(accept_mutex);
+
+        while (!this_worker_should_exit) {
+            apr_int16_t event;
+            apr_status_t ret;
+
+            ret = apr_poll(pollset, num_listening_sockets + 1, &srv, -1);
+
+            if (ret != APR_SUCCESS) {
+                if (APR_STATUS_IS_EINTR(ret)) {
+                    continue;
+                }
+                /* poll() will only return errors in catastrophic
+                 * circumstances. Let's try exiting gracefully, for now. */
+                ap_log_error(APLOG_MARK, APLOG_ERR, ret, (const server_rec *)
+                             ap_server_conf, "apr_poll: (listen)");
+                this_worker_should_exit = 1;
+            } else {
+                /* if we've bailed in apr_poll what's the point of trying to use the data? */
+                apr_poll_revents_get(&event, listening_sockets[0], pollset);
+
+                if (event & APR_POLLIN){
+                    apr_sockaddr_t *rec_sa;
+                    apr_size_t len = 5;
+                    char *tmpbuf = apr_palloc(ptrans, sizeof(char) * 5);
+                    apr_sockaddr_info_get(&rec_sa, "127.0.0.1", APR_UNSPEC, 7772, 0, ptrans);
+                    
+                    if ((ret = apr_recvfrom(rec_sa, listening_sockets[0], 0, tmpbuf, &len))
+                        != APR_SUCCESS){
+                        ap_log_error(APLOG_MARK, APLOG_ERR, ret, NULL, 
+                            "error getting data from UDP!!");
+                    }else {
+                        /* add checking??? */              
+                    }
+                    this_worker_should_exit = 1;
+                }
+            }
+          
+            if (this_worker_should_exit) break;
+
+            if (num_listening_sockets == 1) {
+                sd = ap_listeners->sd;
+                goto got_fd;
+            }
+            else {
+                /* find a listener */
+                curr_pollfd = last_pollfd;
+                do {
+                    curr_pollfd++;
+
+                    if (curr_pollfd > num_listening_sockets)
+                        curr_pollfd = 1;
+                    
+                    /* Get the revent... */
+                    apr_poll_revents_get(&event, listening_sockets[curr_pollfd], pollset);
+                    
+                    if (event & APR_POLLIN) {
+                        last_pollfd = curr_pollfd;
+                        sd = listening_sockets[curr_pollfd];
+                        goto got_fd;
+                    }
+                } while (curr_pollfd != last_pollfd);
+            }
+        }
+    got_fd:
+
+        if (!this_worker_should_exit) {
+            rv = apr_accept(&csd, sd, ptrans);
+
+            apr_thread_mutex_unlock(accept_mutex);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                  "apr_accept");
+            } else {
+                process_socket(ptrans, csd, child_slot, bucket_alloc);
+                requests_this_child--;
+            }
+        }
+        else {
+            apr_thread_mutex_unlock(accept_mutex);
+            break;
+        }
+        apr_pool_clear(ptrans);
+    }
+
+    ap_update_child_status_from_indexes(0, child_slot, SERVER_DEAD, (request_rec*)NULL);
+
+    apr_bucket_alloc_destroy(bucket_alloc);
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, NULL,
+                 "worker_thread %ld exiting", find_thread(NULL));
+    
+    apr_thread_mutex_lock(worker_thread_count_mutex);
+    worker_thread_count--;
+    apr_thread_mutex_unlock(worker_thread_count_mutex);
+
+    return (0);
+}
+
+static int make_worker(int slot)
+{
+    thread_id tid;
+    proc_info *my_info = (proc_info *)malloc(sizeof(proc_info)); /* freed by thread... */
+
+    if (my_info == NULL) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+            "malloc: out of memory");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+    
+    my_info->slot = slot;
+    apr_pool_create(&my_info->tpool, pchild);
+    
+    if (slot + 1 > ap_max_child_assigned)
+	    ap_max_child_assigned = slot + 1;
+
+    if (one_process) {
+    	set_signals();
+        ap_scoreboard_image->parent[0].pid = getpid();
+        return 0;
+    }
+
+    (void) ap_update_child_status_from_indexes(0, slot, SERVER_STARTING, (request_rec*)NULL);
+    tid = spawn_thread(worker_thread, "apache_worker", B_NORMAL_PRIORITY,
+        my_info);
+    if (tid < B_NO_ERROR) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, errno, NULL, 
+            "spawn_thread: Unable to start a new thread");
+        /* In case system resources are maxxed out, we don't want
+         * Apache running away with the CPU trying to fork over and
+         * over and over again. 
+         */
+        (void) ap_update_child_status_from_indexes(0, slot, SERVER_DEAD, 
+                                                   (request_rec*)NULL);
+        
+    	sleep(10);
+        free(my_info);
+        
+    	return -1;
+    }
+    resume_thread(tid);
+
+    ap_scoreboard_image->servers[0][slot].tid = tid;
+    return 0;
+}
+
+static void check_restart(void *data)
+{
+    if (!restart_pending && !shutdown_pending) {
+        int slot = (int)data;
+        make_worker(slot);
+        ap_log_error(APLOG_MARK, APLOG_INFO, 0, NULL, 
+            "spawning a new worker thread in slot %d", slot);
+    }
+}
+
+/* start up a bunch of children */
+static void startup_threads(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < ap_thread_limit; ++i) {
+	if (ap_scoreboard_image->servers[0][i].tid) {
+	    continue;
+	}
+	if (make_worker(i) < 0) {
+	    break;
+	}
+	--number_to_start;
+    }
+}
+
+
+/*
+ * spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough idle servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE	(32)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_idle_server_maintenance(void)
+{
+    int i;
+    int free_length;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead  = -1;
+
+    /* initialize the free_list */
+    free_length = 0;
+
+    for (i = 0; i < ap_thread_limit; ++i) {
+        if (ap_scoreboard_image->servers[0][i].tid == 0) {
+            if (free_length < spawn_rate) {
+                free_slots[free_length] = i;
+                ++free_length;
+            }
+        }
+        else {
+            last_non_dead = i;
+        }
+
+    	if (i >= ap_max_child_assigned && free_length >= spawn_rate) {
+	         break;
+	    }
+    }
+    ap_max_child_assigned = last_non_dead + 1;
+
+    if (free_length > 0) {
+    	for (i = 0; i < free_length; ++i) {
+	        make_worker(free_slots[i]);
+	    }
+	    /* the next time around we want to spawn twice as many if this
+	     * wasn't good enough, but not if we've just done a graceful
+	     */
+	    if (hold_off_on_exponential_spawning) {
+	        --hold_off_on_exponential_spawning;
+	    } else if (spawn_rate < MAX_SPAWN_RATE) {
+	        spawn_rate *= 2;
+	    }
+    } else {
+        spawn_rate = 1;
+    }
+}
+
+static void server_main_loop(int remaining_threads_to_start)
+{
+    int child_slot;
+    apr_exit_why_e exitwhy;
+    int status;
+    apr_proc_t pid;
+    int i;
+
+    while (!restart_pending && !shutdown_pending) {
+
+        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
+         
+        if (pid.pid >= 0) {
+            if (ap_process_child_status(&pid, exitwhy, status) == APEXIT_CHILDFATAL) {
+                shutdown_pending = 1;
+                child_fatal = 1;
+                return;
+            }
+            /* non-fatal death... note that it's gone in the scoreboard. */
+            child_slot = -1;
+            for (i = 0; i < ap_max_child_assigned; ++i) {
+        	if (ap_scoreboard_image->servers[0][i].tid == pid.pid) {
+                    child_slot = i;
+                    break;
+                }
+            }
+            if (child_slot >= 0) {
+                ap_scoreboard_image->servers[0][child_slot].tid = 0;
+                (void) ap_update_child_status_from_indexes(0, child_slot, 
+                                                           SERVER_DEAD, 
+                                                           (request_rec*)NULL);
+                
+                if (remaining_threads_to_start
+		            && child_slot < ap_thread_limit) {
+                    /* we're still doing a 1-for-1 replacement of dead
+                     * children with new children
+                     */
+                    make_worker(child_slot);
+                    --remaining_threads_to_start;
+		        }
+#if APR_HAS_OTHER_CHILD
+            }
+            else if (apr_proc_other_child_read(&pid, status) == 0) {
+    		/* handled */
+#endif
+            }
+            else if (is_graceful) {
+                /* Great, we've probably just lost a slot in the
+                 * scoreboard.  Somehow we don't know about this
+                 * child.
+                 */
+                 ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ap_server_conf,
+			                  "long lost child came home! (pid %ld)", pid.pid);
+            }
+	    
+            /* Don't perform idle maintenance when a child dies,
+             * only do it when there's a timeout.  Remember only a
+             * finite number of children can die, and it's pretty
+             * pathological for a lot to die suddenly.
+             */
+             continue;
+         }
+	     else if (remaining_threads_to_start) {
+             /* we hit a 1 second timeout in which none of the previous
+              * generation of children needed to be reaped... so assume
+              * they're all done, and pick up the slack if any is left.
+              */
+              startup_threads(remaining_threads_to_start);
+              remaining_threads_to_start = 0;
+              /* In any event we really shouldn't do the code below because
+               * few of the servers we just started are in the IDLE state
+               * yet, so we'd mistakenly create an extra server.
+               */
+              continue;
+         }
+         perform_idle_server_maintenance();
+    }
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_max_child_assigned;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = HARD_THREAD_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = HARD_THREAD_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = max_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = min_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_thread;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    int remaining_threads_to_start, i,j;
+    apr_status_t rv;
+    ap_listen_rec *lr;    
+    pconf = _pconf;
+    ap_server_conf = s;
+
+    /* Increase the available pool of fd's.  This code from
+     * Joe Kloss <joek@be.com>
+     */
+    if( FD_SETSIZE > 128 && (i = _kset_fd_limit_( 128 )) < 0 ){
+        ap_log_error(APLOG_MARK, APLOG_ERR, i, s,
+            "could not set FD_SETSIZE (_kset_fd_limit_ failed)");
+    }
+
+    /* BeOS R5 doesn't support pipes on select() calls, so we use a 
+       UDP socket as these are supported in both R5 and BONE.  If we only cared
+       about BONE we'd use a pipe, but there it is.
+       As we have UDP support in APR, now use the APR functions and check all the
+       return values...
+      */
+    if (apr_sockaddr_info_get(&udp_sa, "127.0.0.1", APR_UNSPEC, 7772, 0, _pconf)
+        != APR_SUCCESS){
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, s,
+            "couldn't create control socket information, shutting down");
+        return 1;
+    }
+    if (apr_socket_create(&udp_sock, udp_sa->family, SOCK_DGRAM,
+                      _pconf) != APR_SUCCESS){
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, s,
+            "couldn't create control socket, shutting down");
+        return 1;
+    }
+    if (apr_bind(udp_sock, udp_sa) != APR_SUCCESS){
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, s,
+            "couldn't bind UDP socket!");
+        return 1;
+    }
+ 
+    if ((num_listening_sockets = ap_setup_listeners(ap_server_conf)) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, 0, s,
+            "no listening sockets available, shutting down");
+        return 1;
+    }
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    /*
+     * Create our locks... 
+     */
+    
+    /* accept_mutex
+     * used to lock around select so we only have one thread
+     * in select at a time
+     */
+    rv = apr_thread_mutex_create(&accept_mutex, 0, pconf);
+    if (rv != APR_SUCCESS) {
+        /* tsch tsch, can't have more than one thread in the accept loop
+           at a time so we need to fall on our sword... */
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create accept lock");
+        return 1;
+    }
+
+    /* worker_thread_count_mutex
+     * locks the worker_thread_count so we have ana ccurate count...
+     */
+    rv = apr_thread_mutex_create(&worker_thread_count_mutex, 0, pconf);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create worker thread count lock");
+        return 1;
+    }
+
+    /*
+     * Startup/shutdown... 
+     */
+    
+    if (!is_graceful) {
+        /* setup the scoreboard shared memory */
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            return 1;
+        }
+
+        for (i = 0; i < HARD_SERVER_LIMIT; i++) {
+            ap_scoreboard_image->parent[i].pid = 0;
+            for (j = 0;j < HARD_THREAD_LIMIT; j++)
+                ap_scoreboard_image->servers[i][j].tid = 0;
+        }
+    }
+
+    if (HARD_SERVER_LIMIT == 1)
+        ap_scoreboard_image->parent[0].pid = getpid();
+
+    set_signals();
+
+    /* Sanity checks to avoid thrashing... */
+    if (max_spare_threads < min_spare_threads )
+        max_spare_threads = min_spare_threads;
+
+    /* If we're doing a graceful_restart then we're going to see a lot
+     * of threads exiting immediately when we get into the main loop
+     * below (because we just sent them AP_SIG_GRACEFUL).  This happens 
+     * pretty rapidly... and for each one that exits we'll start a new one 
+     * until we reach at least threads_min_free.  But we may be permitted to
+     * start more than that, so we'll just keep track of how many we're
+     * supposed to start up without the 1 second penalty between each fork.
+     */
+    remaining_threads_to_start = ap_threads_to_start;
+    /* sanity check on the number to start... */
+    if (remaining_threads_to_start > ap_thread_limit) {
+	    remaining_threads_to_start = ap_thread_limit;
+    }
+
+    /* setup the child pool to use for the workers.  Each worker creates
+     * a seperate pool of its own to use.
+     */
+    apr_pool_create(&pchild, pconf);
+
+    /* Now that we have the child pool (pchild) we can allocate
+     * the listenfds and creat the pollset...
+     */
+    listening_sockets = apr_palloc(pchild,
+       sizeof(*listening_sockets) * (num_listening_sockets + 1));
+
+    listening_sockets[0] = udp_sock;
+    for (lr = ap_listeners, i = 1; i <= num_listening_sockets; lr = lr->next, ++i)
+	    listening_sockets[i]=lr->sd;
+
+    /* we assume all goes OK...hmm might want to check that! */
+    /* if we're in one_process mode we don't want to start threads
+     * do we??
+     */
+    if (!is_graceful && !one_process) {
+	    startup_threads(remaining_threads_to_start);
+	    remaining_threads_to_start = 0;
+    }
+    else {
+	    /* give the system some time to recover before kicking into
+	     * exponential mode */
+        hold_off_on_exponential_spawning = 10;
+    }
+
+    /*
+     * record that we've entered the world !
+     */
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		"%s configured -- resuming normal operations",
+		ap_get_server_version());
+
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+		"Server built: %s", ap_get_server_built());
+
+    restart_pending = shutdown_pending = 0;
+
+    /*
+     * main_loop until it's all over
+     */
+    if (!one_process) {
+        server_main_loop(remaining_threads_to_start);
+    
+        tell_workers_to_exit(); /* if we get here we're exiting... */
+        sleep(1); /* give them a brief chance to exit */
+    } else {
+        proc_info *my_info = (proc_info *)malloc(sizeof(proc_info));
+        my_info->slot = 0;
+        apr_pool_create(&my_info->tpool, pchild);
+        worker_thread(my_info);
+    }
+        
+    /* close the UDP socket we've been using... */
+    apr_socket_close(listening_sockets[0]);
+
+    if ((one_process || shutdown_pending) && !child_fatal) {
+        const char *pidfile = NULL;
+        pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+        if ( pidfile != NULL && unlink(pidfile) == 0)
+            ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                         "removed PID file %s (pid=%ld)", pidfile, 
+                         (long)getpid());
+    }
+
+    if (one_process) {
+        return 1;
+    }
+        
+    /*
+     * If we get here we're shutting down...
+     */
+    if (shutdown_pending) {
+        /* Time to gracefully shut down:
+         * Kill child processes, tell them to call child_exit, etc...
+         */
+        if (beosd_killpg(getpgrp(), SIGTERM) < 0)
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+             "killpg SIGTERM");
+      
+        /* use ap_reclaim_child_processes starting with SIGTERM */
+        ap_reclaim_child_processes(1);
+
+        if (!child_fatal) {         /* already recorded */
+            /* record the shutdown in the log */
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                         "caught SIGTERM, shutting down");
+        }
+    
+        return 1;
+    }
+
+    /* we've been told to restart */
+    signal(SIGHUP, SIG_IGN);
+
+    if (is_graceful) {
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		    AP_SIG_GRACEFUL_STRING " received.  Doing graceful restart");
+    }
+    else {
+        /* Kill 'em all.  Since the child acts the same on the parents SIGTERM 
+         * and a SIGHUP, we may as well use the same signal, because some user
+         * pthreads are stealing signals from us left and right.
+         */
+	    
+        ap_reclaim_child_processes(1);		/* Start with SIGTERM */
+	    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		    "SIGHUP received.  Attempting to restart");
+    }
+    
+    /* just before we go, tidy up the locks we've created to prevent a 
+     * potential leak of semaphores... */
+    apr_thread_mutex_destroy(worker_thread_count_mutex);
+    apr_thread_mutex_destroy(accept_mutex);
+    
+    return 0;
+}
+
+static int beos_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp)
+{
+    static int restart_num = 0;
+    int no_detach, debug, foreground;
+    apr_status_t rv;
+
+    mpm_state = AP_MPMQ_STARTING;
+
+    debug = ap_exists_config_define("DEBUG");
+
+    if (debug) {
+        foreground = one_process = 1;
+        no_detach = 0;
+    }
+    else
+    {
+        one_process = ap_exists_config_define("ONE_PROCESS");
+        no_detach = ap_exists_config_define("NO_DETACH");
+        foreground = ap_exists_config_define("FOREGROUND");
+    }
+
+    /* sigh, want this only the second time around */
+    if (restart_num++ == 1) {
+        is_graceful = 0;
+        
+        if (!one_process && !foreground) {
+            rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
+                                           : APR_PROC_DETACH_DAEMONIZE);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                             "apr_proc_detach failed");
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }                  
+        }
+
+        server_pid = getpid();
+    }
+
+    beosd_pre_config();
+    ap_listen_pre_config();
+    ap_threads_to_start = DEFAULT_START_THREADS;
+    min_spare_threads = DEFAULT_MIN_FREE_THREADS;
+    max_spare_threads = DEFAULT_MAX_FREE_THREADS;
+    ap_thread_limit = HARD_THREAD_LIMIT;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_max_requests_per_thread = DEFAULT_MAX_REQUESTS_PER_THREAD;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    return OK;
+}
+
+static void beos_hooks(apr_pool_t *p)
+{
+    one_process = 0;
+    
+    ap_hook_pre_config(beos_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST); 
+}
+
+static const char *set_threads_to_start(cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_to_start = atoi(arg);
+    if (ap_threads_to_start < 0) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                     "StartThreads set to a value less than 0, reset to 1");
+        ap_threads_to_start = 1;
+    }
+    return NULL;
+}
+
+static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    min_spare_threads = atoi(arg);
+    if (min_spare_threads <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       min_spare_threads = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_spare_threads(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    max_spare_threads = atoi(arg);
+    return NULL;
+}
+
+static const char *set_threads_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_thread_limit = atoi(arg);
+    if (ap_thread_limit > HARD_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients of %d exceeds compile time limit "
+                    "of %d servers,", ap_thread_limit, HARD_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering MaxClients to %d.  To increase, please "
+                    "see the", HARD_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " HARD_THREAD_LIMIT define in server/mpm/beos/mpm_default.h.");
+       ap_thread_limit = HARD_THREAD_LIMIT;
+    } 
+    else if (ap_thread_limit < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require MaxClients > 0, setting to %d", HARD_THREAD_LIMIT);
+        ap_thread_limit = HARD_THREAD_LIMIT;
+    }
+    return NULL;
+}
+
+static const char *set_max_requests_per_thread (cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_max_requests_per_thread = atoi(arg);
+    if (ap_max_requests_per_thread < 0) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                     "WARNING: MaxRequestsPerThread was set below 0"
+                     "reset to 0, but this may not be what you want.");
+        ap_max_requests_per_thread = 0;
+    }
+
+    return NULL;
+}
+
+static const command_rec beos_cmds[] = {
+BEOS_DAEMON_COMMANDS,
+LISTEN_COMMANDS,
+AP_INIT_TAKE1( "StartThreads", set_threads_to_start, NULL, RSRC_CONF,
+  "Number of threads to launch at server startup"),
+AP_INIT_TAKE1( "MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,
+  "Minimum number of idle children, to handle request spikes"),
+AP_INIT_TAKE1( "MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,
+  "Maximum number of idle children" ),
+AP_INIT_TAKE1( "MaxClients", set_threads_limit, NULL, RSRC_CONF, 
+  "Maximum number of children alive at the same time (max threads)" ),
+AP_INIT_TAKE1( "MaxRequestsPerThread", set_max_requests_per_thread, NULL, RSRC_CONF,
+  "Maximum number of requests served by a thread" ),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_beos_module = {
+    MPM20_MODULE_STUFF,
+    NULL,                       /* hook to run before apache parses args */
+    NULL,			/* create per-directory config structure */
+    NULL,			/* merge per-directory config structures */
+    NULL,			/* create per-server config structure */
+    NULL,			/* merge per-server config structures */
+    beos_cmds,		/* command apr_table_t */
+    beos_hooks		/* register_hooks */
+};
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/beos/beos.h b/rubbos/app/httpd-2.0.64/server/mpm/beos/beos.h
new file mode 100644
index 00000000..eb8a5509
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/beos/beos.h
@@ -0,0 +1,26 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_BEOS_H
+#define APACHE_MPM_BEOS_H
+
+extern int ap_threads_per_child;
+extern int ap_pipe_of_death[2];
+extern int ap_extended_status;
+extern void clean_child_exit(int);
+extern int max_daemons_limit;
+
+#endif /* APACHE_MPM_BEOS_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/beos/config5.m4 b/rubbos/app/httpd-2.0.64/server/mpm/beos/config5.m4
new file mode 100644
index 00000000..4f201408
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/beos/config5.m4
@@ -0,0 +1,7 @@
+dnl ## XXX - Need a more thorough check of the proper flags to use
+
+if test "$MPM_NAME" = "beos" ; then
+    apache_apr_flags="--enable-threads"
+
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_NAME/Makefile)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/beos/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/beos/mpm.h
new file mode 100644
index 00000000..57221b1c
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/beos/mpm.h
@@ -0,0 +1,40 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_BEOS_H
+#define APACHE_MPM_BEOS_H
+
+#define BEOS_MPM
+#include "scoreboard.h"
+
+#define MPM_NAME "Beos"
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->servers[0][i].tid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+
+#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+#define AP_MPM_WANT_WAIT_OR_TIMEOUT
+#define AP_MPM_WANT_PROCESS_CHILD_STATUS
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+
+extern int ap_max_child_assigned;
+extern server_rec *ap_server_conf;
+extern int ap_threads_per_child;
+
+#endif /* APACHE_MPM_BEOS_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/beos/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/beos/mpm_default.h
new file mode 100644
index 00000000..7bd0ce48
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/beos/mpm_default.h
@@ -0,0 +1,76 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* we use the child (c) as zero in our code... */
+#define AP_ID_FROM_CHILD_THREAD(c, t)     t
+/* as the child is always zero, just return the id... */
+#define AP_CHILD_THREAD_FROM_ID(i)        0 , i
+
+/* Number of threads to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_THREADS
+#define DEFAULT_START_THREADS 10
+#endif
+
+#ifdef NO_THREADS
+#define DEFAULT_THREADS 1
+#endif
+#ifndef DEFAULT_THREADS
+#define DEFAULT_THREADS 10
+#endif
+
+/* The following 2 settings are used to control the number of threads
+ * we have available.  Normally the DEFAULT_MAX_FREE_THREADS is set
+ * to the same as the HARD_THREAD_LIMIT to avoid churning of starting
+ * new threads to replace threads killed off...
+ */
+
+/* Maximum number of *free* threads --- more than this, and
+ * they will die off.
+ */
+#ifndef DEFAULT_MAX_FREE_THREADS
+#define DEFAULT_MAX_FREE_THREADS HARD_THREAD_LIMIT
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+#ifndef DEFAULT_MIN_FREE_THREADS
+#define DEFAULT_MIN_FREE_THREADS 1
+#endif
+                   
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If == 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_THREAD
+#define DEFAULT_MAX_REQUESTS_PER_THREAD 0
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/config.m4 b/rubbos/app/httpd-2.0.64/server/mpm/config.m4
new file mode 100644
index 00000000..c86a624e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/config.m4
@@ -0,0 +1,45 @@
+AC_MSG_CHECKING(which MPM to use)
+AC_ARG_WITH(mpm,
+APACHE_HELP_STRING(--with-mpm=MPM,Choose the process model for Apache to use.
+                          MPM={beos|worker|prefork|mpmt_os2|perchild|leader|threadpool}),[
+  APACHE_MPM=$withval
+],[
+  if test "x$APACHE_MPM" = "x"; then
+    APACHE_MPM=prefork
+  fi
+])
+AC_MSG_RESULT($APACHE_MPM)
+
+apache_cv_mpm=$APACHE_MPM
+	
+if test "$apache_cv_mpm" = "worker" -o "$apache_cv_mpm" = "perchild" -o "$apache_cv_mpm" = "leader" -o "$apache_cv_mpm" = "threadpool" ; then
+  APR_CHECK_APR_DEFINE(APR_HAS_THREADS)
+
+  if test "x$ac_cv_define_APR_HAS_THREADS" = "xno"; then
+    AC_MSG_RESULT(The currently selected MPM requires threads which your system seems to lack)
+    AC_MSG_CHECKING(checking for replacement)
+    AC_MSG_RESULT(prefork selected)
+    apache_cv_mpm=prefork
+  fi
+fi
+
+APACHE_FAST_OUTPUT(server/mpm/Makefile)
+
+MPM_NAME=$apache_cv_mpm
+if test "$MPM_NAME" = "leader" -o "$MPM_NAME" = "threadpool" -o "$MPM_NAME" = "perchild"; then
+  AC_MSG_WARN(You have selected an EXPERIMENTAL MPM.  Be warned!)
+  MPM_SUBDIR_NAME=experimental/$MPM_NAME
+else
+  MPM_SUBDIR_NAME=$MPM_NAME
+fi
+MPM_DIR=server/mpm/$MPM_SUBDIR_NAME
+MPM_LIB=$MPM_DIR/lib${MPM_NAME}.la
+
+if test ! -f "$abs_srcdir/$MPM_DIR/mpm.h"; then
+    AC_MSG_ERROR(the selected mpm -- $apache_cv_mpm -- is not supported)
+fi
+
+APACHE_SUBST(MPM_NAME)
+APACHE_SUBST(MPM_SUBDIR_NAME)
+MODLIST="$MODLIST mpm_${MPM_NAME}"
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/Makefile.in
new file mode 100644
index 00000000..03f1765e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libleader.la
+LTLIBRARY_SOURCES = leader.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/README b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/README
new file mode 100644
index 00000000..1981a5be
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/README
@@ -0,0 +1,15 @@
+Leader MPM:
+This is an experimental variant of the standard worker MPM.
+It uses a Leader/Followers design pattern to coordinate work among threads:
+http://deuce.doc.wustl.edu/doc/pspdfs/lf.pdf
+
+To use the leader MPM, add "--with-mpm=leader" to the configure
+script's arguments when building the httpd.
+  
+This MPM depends on APR's atomic compare-and-swap operations for
+thread synchronization.  If you are compiling for an x86 target
+and you don't need to support 386s, or you're compiling for a
+SPARC and you don't need to run on pre-UltraSPARC chips, add
+"--enable-nonportable-atomics=yes" to the configure script's
+arguments.  This will cause APR to implement atomic operations
+using efficient opcodes not available in older CPUs.
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/config5.m4 b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/config5.m4
new file mode 100644
index 00000000..9a915abf
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/config5.m4
@@ -0,0 +1,6 @@
+dnl ## XXX - Need a more thorough check of the proper flags to use
+
+if test "$MPM_NAME" = "leader" ; then
+    AC_CHECK_FUNCS(pthread_kill)
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/leader.c b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/leader.c
new file mode 100644
index 00000000..322c2286
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/leader.c
@@ -0,0 +1,1976 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr.h"
+#include "apr_portable.h"
+#include "apr_strings.h"
+#include "apr_file_io.h"
+#include "apr_thread_proc.h"
+#include "apr_signal.h"
+#include "apr_thread_cond.h"
+#include "apr_thread_mutex.h"
+#include "apr_proc_mutex.h"
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if APR_HAVE_SYS_WAIT_H
+#include <sys/wait.h> 
+#endif
+#ifdef HAVE_SYS_PROCESSOR_H
+#include <sys/processor.h> /* for bindprocessor() */
+#endif
+
+#if !APR_HAS_THREADS
+#error The Leader/Follower MPM requires APR threads, but they are unavailable.
+#endif
+
+#define CORE_PRIVATE 
+ 
+#include "ap_config.h"
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"        /* for read_config */ 
+#include "http_core.h"          /* for get_remote_host */ 
+#include "http_connection.h"
+#include "ap_mpm.h"
+#include "mpm_common.h"
+#include "ap_listen.h"
+#include "scoreboard.h" 
+#include "mpm_default.h"
+#include "apr_poll.h"
+
+#include <signal.h>
+#include <limits.h>             /* for INT_MAX */
+
+#include "apr_atomic.h"
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons --- first off,
+ * in case something goes seriously wrong, we want to stop the fork bomb
+ * short of actually crashing the machine we're running on by filling some
+ * kernel table.  Secondly, it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_SERVER_LIMIT
+#define DEFAULT_SERVER_LIMIT 16
+#endif
+
+/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_SERVER_LIMIT
+#define MAX_SERVER_LIMIT 20000
+#endif
+
+/* Limit on the threads per process.  Clients will be locked out if more than
+ * this  * server_limit are needed.
+ *
+ * We keep this for one reason it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_THREAD_LIMIT
+#define DEFAULT_THREAD_LIMIT 64 
+#endif
+
+/* Admin can't tune ThreadLimit beyond MAX_THREAD_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_THREAD_LIMIT
+#define MAX_THREAD_LIMIT 20000
+#endif
+
+/*
+ * Actual definitions of config globals
+ */
+
+int ap_threads_per_child = 0;         /* Worker threads per child */
+static int ap_daemons_to_start = 0;
+static int min_spare_threads = 0;
+static int max_spare_threads = 0;
+static int ap_daemons_limit = 0;
+static int server_limit = DEFAULT_SERVER_LIMIT;
+static int first_server_limit;
+static int thread_limit = DEFAULT_THREAD_LIMIT;
+static int first_thread_limit;
+static int changed_limit_at_restart;
+static int dying = 0;
+static int workers_may_exit = 0;
+static int start_thread_may_exit = 0;
+static int requests_this_child;
+static int num_listensocks = 0;
+static int resource_shortage = 0;
+static int mpm_state = AP_MPMQ_STARTING;
+
+typedef struct worker_wakeup_info worker_wakeup_info;
+
+/* The structure used to pass unique initialization info to each thread */
+typedef struct {
+    int pid;
+    int tid;
+    int sd;
+} proc_info;
+
+
+/* Structure used to pass information to the thread responsible for 
+ * creating the rest of the threads.
+ */
+typedef struct {
+    apr_thread_t **threads;
+    int child_num_arg;
+    apr_threadattr_t *threadattr;
+} thread_starter;
+
+#define ID_FROM_CHILD_THREAD(c, t)    ((c * thread_limit) + t)
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts.  We 
+ * use this value to optimize routines that have to scan the entire 
+ * scoreboard.
+ */
+int ap_max_daemons_limit = -1;
+
+static ap_pod_t *pod;
+
+/* *Non*-shared http_main globals... */
+
+server_rec *ap_server_conf;
+
+/* This MPM respects a couple of runtime flags that can aid in debugging.
+ *  Setting the -DNO_DETACH flag will prevent the root process from
+ *  detaching from its controlling terminal. Additionally, setting
+ * the -DONE_PROCESS flag (which implies -DNO_DETACH) will get you the
+ * child_main loop running in the process which originally started up.
+ * This gives you a pretty nice debugging environment.  (You'll get a SIGHUP
+ * early in standalone_main; just continue through.  This is the server
+ * trying to kill off any child processes which it might have lying
+ * around --- Apache doesn't keep track of their pids, it just sends
+ * SIGHUP to the process group, ignoring it in the root process.
+ * Continue through and you'll be fine.).
+ */
+
+static int one_process = 0;
+
+#ifdef DEBUG_SIGSTOP
+int raise_sigstop_flags;
+#endif
+
+static apr_pool_t *pconf;                 /* Pool for config stuff */
+static apr_pool_t *pchild;                /* Pool for httpd child stuff */
+
+static pid_t ap_my_pid; /* Linux getpid() doesn't work except in main 
+                           thread. Use this instead */
+static pid_t parent_pid;
+
+/* Locks for accept serialization */
+static apr_proc_mutex_t *accept_mutex;
+
+#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
+#define SAFE_ACCEPT(stmt) (ap_listeners->next ? (stmt) : APR_SUCCESS)
+#else
+#define SAFE_ACCEPT(stmt) (stmt)
+#endif
+
+
+/* Structure used to wake up an idle worker thread
+ */
+struct worker_wakeup_info {
+    apr_uint32_t next; /* index into worker_wakeups array,
+                        * used to build a linked list
+                        */
+    apr_thread_cond_t *cond;
+    apr_thread_mutex_t *mutex;
+};
+
+static worker_wakeup_info *worker_wakeup_create(apr_pool_t *pool)
+{
+    apr_status_t rv;
+    worker_wakeup_info *wakeup;
+
+    wakeup = (worker_wakeup_info *)apr_palloc(pool, sizeof(*wakeup));
+    if ((rv = apr_thread_cond_create(&wakeup->cond, pool)) != APR_SUCCESS) {
+        return NULL;
+    }
+    if ((rv = apr_thread_mutex_create(&wakeup->mutex, APR_THREAD_MUTEX_DEFAULT,
+                                      pool)) != APR_SUCCESS) {
+        return NULL;
+    }
+    /* The wakeup's mutex will be unlocked automatically when
+     * the worker blocks on the condition variable
+     */
+    apr_thread_mutex_lock(wakeup->mutex);
+    return wakeup;
+}
+
+
+/* Structure used to hold a stack of idle worker threads 
+ */
+typedef struct {
+    /* 'state' consists of several fields concatenated into a
+     * single 32-bit int for use with the apr_atomic_cas() API:
+     *   state & STACK_FIRST  is the thread ID of the first thread
+     *                        in a linked list of idle threads
+     *   state & STACK_TERMINATED  indicates whether the proc is shutting down
+     *   state & STACK_NO_LISTENER indicates whether the process has
+     *                             no current listener thread
+     */
+    apr_uint32_t state;
+} worker_stack;
+
+#define STACK_FIRST  0xffff
+#define STACK_LIST_END  0xffff
+#define STACK_TERMINATED 0x10000
+#define STACK_NO_LISTENER 0x20000
+
+static worker_wakeup_info **worker_wakeups = NULL;
+
+static worker_stack* worker_stack_create(apr_pool_t *pool, apr_size_t max)
+{
+    worker_stack *stack = (worker_stack *)apr_palloc(pool, sizeof(*stack));
+    stack->state = STACK_NO_LISTENER | STACK_LIST_END;
+    return stack;
+}
+
+static apr_status_t worker_stack_wait(worker_stack *stack,
+                                      apr_uint32_t worker_id)
+{
+    worker_wakeup_info *wakeup = worker_wakeups[worker_id];
+
+    while (1) {
+        apr_uint32_t state = stack->state;
+        if (state & (STACK_TERMINATED | STACK_NO_LISTENER)) {
+            if (state & STACK_TERMINATED) {
+                return APR_EINVAL;
+            }
+            if (apr_atomic_cas(&(stack->state), STACK_LIST_END, state) !=
+                state) {
+                continue;
+            }
+            else {
+                return APR_SUCCESS;
+            }
+        }
+        wakeup->next = state;
+        if (apr_atomic_cas(&(stack->state), worker_id, state) != state) {
+            continue;
+        }
+        else {
+            return apr_thread_cond_wait(wakeup->cond, wakeup->mutex);
+        }
+    }    
+}
+
+static apr_status_t worker_stack_awaken_next(worker_stack *stack)
+{
+
+    while (1) {
+        apr_uint32_t state = stack->state;
+        apr_uint32_t first = state & STACK_FIRST;
+        if (first == STACK_LIST_END) {
+            if (apr_atomic_cas(&(stack->state), state | STACK_NO_LISTENER,
+                               state) != state) {
+                continue;
+            }
+            else {
+                return APR_SUCCESS;
+            }
+        }
+        else {
+            worker_wakeup_info *wakeup = worker_wakeups[first];
+            if (apr_atomic_cas(&(stack->state), (state ^ first) | wakeup->next,
+                               state) != state) {
+                continue;
+            }
+            else {
+                /* Acquire and release the idle worker's mutex to ensure
+                 * that it's actually waiting on its condition variable
+                 */
+                apr_status_t rv;
+                if ((rv = apr_thread_mutex_lock(wakeup->mutex)) !=
+                    APR_SUCCESS) {
+                    return rv;
+                }
+                if ((rv = apr_thread_mutex_unlock(wakeup->mutex)) !=
+                    APR_SUCCESS) {
+                    return rv;
+                }
+                return apr_thread_cond_signal(wakeup->cond);
+            }
+        }
+    }
+}
+
+static apr_status_t worker_stack_term(worker_stack *stack)
+{
+    int i;
+    apr_status_t rv;
+
+    while (1) {
+        apr_uint32_t state = stack->state;
+        if (apr_atomic_cas(&(stack->state), state | STACK_TERMINATED,
+                           state) == state) {
+            break;
+        }
+    }
+    for (i = 0; i < ap_threads_per_child; i++) {
+        if ((rv = worker_stack_awaken_next(stack)) != APR_SUCCESS) {
+            return rv;
+        }
+    }
+    return APR_SUCCESS;
+}
+
+static worker_stack *idle_worker_stack;
+
+#define ST_INIT              0
+#define ST_GRACEFUL          1
+#define ST_UNGRACEFUL        2
+
+static int terminate_mode = ST_INIT;
+
+static void signal_threads(int mode)
+{
+    if (terminate_mode == mode) {
+        return;
+    }
+    terminate_mode = mode;
+    mpm_state = AP_MPMQ_STOPPING;
+    workers_may_exit = 1;
+
+    worker_stack_term(idle_worker_stack);
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_max_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_STATIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = server_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = min_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = max_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = ap_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+/* a clean exit from a child with proper cleanup */ 
+static void clean_child_exit(int code) __attribute__ ((noreturn));
+static void clean_child_exit(int code)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (pchild) {
+        apr_pool_destroy(pchild);
+    }
+    ap_mpm_pod_close(pod);
+    exit(code);
+}
+
+static void just_die(int sig)
+{
+    clean_child_exit(0);
+}
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+static volatile int child_fatal;
+ap_generation_t volatile ap_my_generation;
+
+/*
+ * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
+ * functions to initiate shutdown or restart without relying on signals. 
+ * Previously this was initiated in sig_term() and restart() signal handlers, 
+ * but we want to be able to start a shutdown/restart from other sources --
+ * e.g. on Win32, from the service manager. Now the service manager can
+ * call ap_start_shutdown() or ap_start_restart() as appropiate.  Note that
+ * these functions can also be called by the child processes, since global
+ * variables are no longer used to pass on the required action to the parent.
+ *
+ * These should only be called from the parent process itself, since the
+ * parent process will use the shutdown_pending and restart_pending variables
+ * to determine whether to shutdown or restart. The child process should
+ * call signal_parent() directly to tell the parent to die -- this will
+ * cause neither of those variable to be set, which the parent will
+ * assume means something serious is wrong (which it will be, for the
+ * child to force an exit) and so do an exit anyway.
+ */
+
+static void ap_start_shutdown(void)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (shutdown_pending == 1) {
+        /* Um, is this _probably_ not an error, if the user has
+         * tried to do a shutdown twice quickly, so we won't
+         * worry about reporting it.
+         */
+        return;
+    }
+    shutdown_pending = 1;
+}
+
+/* do a graceful restart if graceful == 1 */
+static void ap_start_restart(int graceful)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (restart_pending == 1) {
+        /* Probably not an error - don't bother reporting it */
+        return;
+    }
+    restart_pending = 1;
+    is_graceful = graceful;
+}
+
+static void sig_term(int sig)
+{
+    if (ap_my_pid == parent_pid) {
+        ap_start_shutdown();
+    }
+    else {
+        signal_threads(ST_GRACEFUL);
+    }
+}
+
+static void restart(int sig)
+{
+    ap_start_restart(sig == AP_SIG_GRACEFUL);
+}
+
+static void set_signals(void)
+{
+#ifndef NO_USE_SIGACTION
+    struct sigaction sa;
+#endif
+
+    if (!one_process) {
+        ap_fatal_signal_setup(ap_server_conf, pconf);
+    }
+
+#ifndef NO_USE_SIGACTION
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+
+    sa.sa_handler = sig_term;
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGTERM)");
+#ifdef SIGINT
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGINT)");
+#endif
+#ifdef SIGXCPU
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXCPU, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGXCPU)");
+#endif
+#ifdef SIGXFSZ
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXFSZ, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGXFSZ)");
+#endif
+#ifdef SIGPIPE
+    sa.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGPIPE)");
+#endif
+
+    /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy 
+     * processing one */
+    sigaddset(&sa.sa_mask, SIGHUP);
+    sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
+    sa.sa_handler = restart;
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGHUP)");
+    if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(" AP_SIG_GRACEFUL_STRING ")");
+#else
+    if (!one_process) {
+#ifdef SIGXCPU
+        apr_signal(SIGXCPU, SIG_DFL);
+#endif /* SIGXCPU */
+#ifdef SIGXFSZ
+        apr_signal(SIGXFSZ, SIG_DFL);
+#endif /* SIGXFSZ */
+    }
+
+    apr_signal(SIGTERM, sig_term);
+#ifdef SIGHUP
+    apr_signal(SIGHUP, restart);
+#endif /* SIGHUP */
+#ifdef AP_SIG_GRACEFUL
+    apr_signal(AP_SIG_GRACEFUL, restart);
+#endif /* AP_SIG_GRACEFUL */
+#ifdef SIGPIPE
+    apr_signal(SIGPIPE, SIG_IGN);
+#endif /* SIGPIPE */
+
+#endif
+}
+
+/*****************************************************************
+ * Here follows a long bunch of generic server bookkeeping stuff...
+ */
+
+int ap_graceful_stop_signalled(void)
+    /* XXX this is really a bad confusing obsolete name
+     * maybe it should be ap_mpm_process_exiting?
+     */
+{
+    return workers_may_exit;
+}
+
+/*****************************************************************
+ * Child process main loop.
+ */
+
+static void process_socket(apr_pool_t *p, apr_socket_t *sock, int my_child_num,
+                           int my_thread_num, apr_bucket_alloc_t *bucket_alloc)
+{
+    conn_rec *current_conn;
+    long conn_id = ID_FROM_CHILD_THREAD(my_child_num, my_thread_num);
+    int csd;
+    ap_sb_handle_t *sbh;
+
+    ap_create_sb_handle(&sbh, p, my_child_num, my_thread_num);
+    apr_os_sock_get(&csd, sock);
+
+    current_conn = ap_run_create_connection(p, ap_server_conf, sock,
+                                            conn_id, sbh, bucket_alloc);
+    if (current_conn) {
+        ap_process_connection(current_conn, sock);
+        ap_lingering_close(current_conn);
+    }
+}
+
+/* requests_this_child has gone to zero or below.  See if the admin coded
+   "MaxRequestsPerChild 0", and keep going in that case.  Doing it this way
+   simplifies the hot path in worker_thread */
+static void check_infinite_requests(void)
+{
+    if (ap_max_requests_per_child) {
+        signal_threads(ST_GRACEFUL);
+    }
+    else {
+        /* wow! if you're executing this code, you may have set a record.
+         * either this child process has served over 2 billion requests, or
+         * you're running a threaded 2.0 on a 16 bit machine.  
+         *
+         * I'll buy pizza and beers at Apachecon for the first person to do
+         * the former without cheating (dorking with INT_MAX, or running with
+         * uncommitted performance patches, for example).    
+         *
+         * for the latter case, you probably deserve a beer too.   Greg Ames
+         */
+            
+        requests_this_child = INT_MAX;      /* keep going */ 
+    }
+}
+
+static void unblock_signal(int sig)
+{
+    sigset_t sig_mask;
+
+    sigemptyset(&sig_mask);
+    sigaddset(&sig_mask, sig);
+#if defined(SIGPROCMASK_SETS_THREAD_MASK)
+    sigprocmask(SIG_UNBLOCK, &sig_mask, NULL);
+#else
+    pthread_sigmask(SIG_UNBLOCK, &sig_mask, NULL);
+#endif
+}
+
+static void *worker_thread(apr_thread_t *thd, void * dummy)
+{
+    proc_info * ti = dummy;
+    int process_slot = ti->pid;
+    int thread_slot = ti->tid;
+    apr_uint32_t my_worker_num = (apr_uint32_t)(ti->tid);
+    apr_pool_t *tpool = apr_thread_pool_get(thd);
+    void *csd = NULL;
+    apr_allocator_t *allocator;
+    apr_pool_t *ptrans;                /* Pool for per-transaction stuff */
+    apr_bucket_alloc_t *bucket_alloc;
+    int n;
+    apr_pollfd_t *pollset;
+    apr_status_t rv;
+    ap_listen_rec *lr, *last_lr = ap_listeners;
+    int is_listener;
+
+    ap_update_child_status_from_indexes(process_slot, thread_slot, SERVER_STARTING, NULL);
+
+    free(ti);
+
+    apr_allocator_create(&allocator);
+    apr_allocator_max_free_set(allocator, ap_max_mem_free);
+    /* XXX: why is ptrans's parent not tpool?  --jcw 08/2003 */
+    apr_pool_create_ex(&ptrans, NULL, NULL, allocator);
+    apr_allocator_owner_set(allocator, ptrans);
+    bucket_alloc = apr_bucket_alloc_create_ex(allocator);
+
+    apr_poll_setup(&pollset, num_listensocks, tpool);
+    for(lr = ap_listeners ; lr != NULL ; lr = lr->next)
+        apr_poll_socket_add(pollset, lr->sd, APR_POLLIN);
+
+    /* TODO: Switch to a system where threads reuse the results from earlier
+       poll calls - manoj */
+    is_listener = 0;
+    while (!workers_may_exit) {
+
+        ap_update_child_status_from_indexes(process_slot, thread_slot,
+                                            SERVER_READY, NULL);
+        if (!is_listener) {
+            /* Wait until it's our turn to become the listener */
+            if ((rv = worker_stack_wait(idle_worker_stack, my_worker_num)) !=
+                APR_SUCCESS) {
+                if (rv != APR_EINVAL) {
+                    ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                                 "worker_stack_wait failed. Shutting down");
+                }
+                break;
+            }
+            if (workers_may_exit) {
+                break;
+            }
+            is_listener = 1;
+        }
+
+        /* TODO: requests_this_child should be synchronized - aaron */
+        if (requests_this_child <= 0) {
+            check_infinite_requests();
+        }
+        if (workers_may_exit) break;
+
+        if ((rv = SAFE_ACCEPT(apr_proc_mutex_lock(accept_mutex)))
+            != APR_SUCCESS) {
+            int level = APLOG_EMERG;
+
+            if (workers_may_exit) {
+                break;
+            }
+            if (ap_scoreboard_image->parent[process_slot].generation != 
+                ap_scoreboard_image->global->running_generation) {
+                level = APLOG_DEBUG; /* common to get these at restart time */
+            }
+            ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                         "apr_proc_mutex_lock failed. Attempting to shutdown "
+                         "process gracefully.");
+            signal_threads(ST_GRACEFUL);
+            break;                    /* skip the lock release */
+        }
+
+        if (!ap_listeners->next) {
+            /* Only one listener, so skip the poll */
+            lr = ap_listeners;
+        }
+        else {
+            while (!workers_may_exit) {
+                apr_status_t ret;
+                apr_int16_t event;
+
+                ret = apr_poll(pollset, num_listensocks, &n, -1);
+                if (ret != APR_SUCCESS) {
+                    if (APR_STATUS_IS_EINTR(ret)) {
+                        continue;
+                    }
+
+                    /* apr_poll() will only return errors in catastrophic
+                     * circumstances. Let's try exiting gracefully, for now. */
+                    ap_log_error(APLOG_MARK, APLOG_ERR, ret, (const server_rec *)
+                                 ap_server_conf, "apr_poll: (listen)");
+                    signal_threads(ST_GRACEFUL);
+                }
+
+                if (workers_may_exit) break;
+
+                /* find a listener */
+                lr = last_lr;
+                do {
+                    lr = lr->next;
+                    if (lr == NULL) {
+                        lr = ap_listeners;
+                    }
+                    /* XXX: Should we check for POLLERR? */
+                    apr_poll_revents_get(&event, lr->sd, pollset);
+                    if (event & APR_POLLIN) {
+                        last_lr = lr;
+                        goto got_fd;
+                    }
+                } while (lr != last_lr);
+            }
+        }
+    got_fd:
+        if (!workers_may_exit) {
+            rv = lr->accept_func(&csd, lr, ptrans);
+            /* later we trash rv and rely on csd to indicate success/failure */
+            AP_DEBUG_ASSERT(rv == APR_SUCCESS || !csd);
+
+            if (rv == APR_EGENERAL) {
+                /* E[NM]FILE, ENOMEM, etc */
+                resource_shortage = 1;
+                signal_threads(ST_GRACEFUL);
+            }
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(accept_mutex)))
+                != APR_SUCCESS) {
+                int level = APLOG_EMERG;
+
+                if (workers_may_exit) {
+                    break;
+                }
+                if (ap_scoreboard_image->parent[process_slot].generation != 
+                    ap_scoreboard_image->global->running_generation) {
+                    level = APLOG_DEBUG; /* common to get these at restart time */
+                }
+                ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+            }
+            if (csd != NULL) {
+                is_listener = 0;
+                worker_stack_awaken_next(idle_worker_stack);
+                process_socket(ptrans, csd, process_slot,
+                               thread_slot, bucket_alloc);
+                apr_pool_clear(ptrans);
+                requests_this_child--;
+            }
+            if ((ap_mpm_pod_check(pod) == APR_SUCCESS) ||
+                (ap_my_generation !=
+                 ap_scoreboard_image->global->running_generation)) {
+                signal_threads(ST_GRACEFUL);
+                break;
+            }
+        }
+        else {
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(accept_mutex)))
+                != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+            }
+            break;
+        }
+    }
+
+    dying = 1;
+    ap_scoreboard_image->parent[process_slot].quiescing = 1;
+
+    worker_stack_term(idle_worker_stack);
+
+    ap_update_child_status_from_indexes(process_slot, thread_slot,
+        (dying) ? SERVER_DEAD : SERVER_GRACEFUL, (request_rec *) NULL);
+
+    apr_bucket_alloc_destroy(bucket_alloc);
+
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+static int check_signal(int signum)
+{
+    switch (signum) {
+    case SIGTERM:
+    case SIGINT:
+        return 1;
+    }
+    return 0;
+}
+
+/* XXX under some circumstances not understood, children can get stuck
+ *     in start_threads forever trying to take over slots which will
+ *     never be cleaned up; for now there is an APLOG_DEBUG message issued
+ *     every so often when this condition occurs
+ */
+static void * APR_THREAD_FUNC start_threads(apr_thread_t *thd, void *dummy)
+{
+    thread_starter *ts = dummy;
+    apr_thread_t **threads = ts->threads;
+    apr_threadattr_t *thread_attr = ts->threadattr;
+    int child_num_arg = ts->child_num_arg;
+    int my_child_num = child_num_arg;
+    proc_info *my_info;
+    apr_status_t rv;
+    int i;
+    int threads_created = 0;
+    int loops;
+    int prev_threads_created;
+
+    idle_worker_stack = worker_stack_create(pchild, ap_threads_per_child);
+    if (idle_worker_stack == NULL) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, 0, ap_server_conf,
+                     "worker_stack_create() failed");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    worker_wakeups = (worker_wakeup_info **)
+        apr_palloc(pchild, sizeof(worker_wakeup_info *) *
+                   ap_threads_per_child);
+
+    loops = prev_threads_created = 0;
+    while (1) {
+        for (i = 0; i < ap_threads_per_child; i++) {
+            int status = ap_scoreboard_image->servers[child_num_arg][i].status;
+            worker_wakeup_info *wakeup;
+
+            if (status != SERVER_GRACEFUL && status != SERVER_DEAD) {
+                continue;
+            }
+
+            wakeup = worker_wakeup_create(pchild);
+            if (wakeup == NULL) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_NOERRNO, 0,
+                             ap_server_conf, "worker_wakeup_create failed");
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+            worker_wakeups[threads_created] = wakeup;
+            my_info = (proc_info *)malloc(sizeof(proc_info));
+            if (my_info == NULL) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+                             "malloc: out of memory");
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+            my_info->pid = my_child_num;
+            my_info->tid = i;
+            my_info->sd = 0;
+        
+            /* We are creating threads right now */
+            ap_update_child_status_from_indexes(my_child_num, i,
+                                                SERVER_STARTING, NULL);
+            /* We let each thread update its own scoreboard entry.  This is
+             * done because it lets us deal with tid better.
+             */
+            rv = apr_thread_create(&threads[i], thread_attr, 
+                                   worker_thread, my_info, pchild);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                    "apr_thread_create: unable to create worker thread");
+                /* In case system resources are maxxed out, we don't want
+                   Apache running away with the CPU trying to fork over and
+                   over and over again if we exit. */
+                apr_sleep(10 * APR_USEC_PER_SEC);
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+            threads_created++;
+        }
+        if (start_thread_may_exit || threads_created == ap_threads_per_child) {
+            break;
+        }
+        /* wait for previous generation to clean up an entry */
+        apr_sleep(1 * APR_USEC_PER_SEC);
+        ++loops;
+        if (loops % 120 == 0) { /* every couple of minutes */
+            if (prev_threads_created == threads_created) {
+                ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                             "child %" APR_PID_T_FMT " isn't taking over "
+                             "slots very quickly (%d of %d)",
+                             ap_my_pid, threads_created, ap_threads_per_child);
+            }
+            prev_threads_created = threads_created;
+        }
+    }
+    
+    /* What state should this child_main process be listed as in the 
+     * scoreboard...?
+     *  ap_update_child_status_from_indexes(my_child_num, i, SERVER_STARTING, 
+     *                                      (request_rec *) NULL);
+     * 
+     *  This state should be listed separately in the scoreboard, in some kind
+     *  of process_status, not mixed in with the worker threads' status.   
+     *  "life_status" is almost right, but it's in the worker's structure, and 
+     *  the name could be clearer.   gla
+     */
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+static void join_workers(apr_thread_t **threads)
+{
+    int i;
+    apr_status_t rv, thread_rv;
+
+    for (i = 0; i < ap_threads_per_child; i++) {
+        if (threads[i]) { /* if we ever created this thread */
+            rv = apr_thread_join(&thread_rv, threads[i]);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "apr_thread_join: unable to join worker "
+                             "thread %d",
+                             i);
+            }
+        }
+    }
+}
+
+static void join_start_thread(apr_thread_t *start_thread_id)
+{
+    apr_status_t rv, thread_rv;
+
+    start_thread_may_exit = 1; /* tell it to give up in case it is still 
+                                * trying to take over slots from a 
+                                * previous generation
+                                */
+    rv = apr_thread_join(&thread_rv, start_thread_id);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "apr_thread_join: unable to join the start "
+                     "thread");
+    }
+}
+
+static void child_main(int child_num_arg)
+{
+    apr_thread_t **threads;
+    apr_status_t rv;
+    thread_starter *ts;
+    apr_threadattr_t *thread_attr;
+    apr_thread_t *start_thread_id;
+
+    mpm_state = AP_MPMQ_STARTING; /* for benefit of any hooks that run as this
+                                  * child initializes
+                                  */
+
+    ap_my_pid = getpid();
+    ap_fatal_signal_child_setup(ap_server_conf);
+    apr_pool_create(&pchild, pconf);
+
+    /*stuff to do before we switch id's, so we have permissions.*/
+    ap_reopen_scoreboard(pchild, NULL, 0);
+
+    rv = SAFE_ACCEPT(apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname,
+                                               pchild));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize cross-process lock in child");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (unixd_setup_child()) {
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_run_child_init(pchild, ap_server_conf);
+
+    /* done with init critical section */
+
+    /* Just use the standard apr_setup_signal_thread to block all signals
+     * from being received.  The child processes no longer use signals for
+     * any communication with the parent process.
+     */
+    rv = apr_setup_signal_thread();
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize signal thread");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (ap_max_requests_per_child) {
+        requests_this_child = ap_max_requests_per_child;
+    }
+    else {
+        /* coding a value of zero means infinity */
+        requests_this_child = INT_MAX;
+    }
+    
+    /* Setup worker threads */
+
+    /* clear the storage; we may not create all our threads immediately, 
+     * and we want a 0 entry to indicate a thread which was not created
+     */
+    threads = (apr_thread_t **)calloc(1, 
+                                sizeof(apr_thread_t *) * ap_threads_per_child);
+    if (threads == NULL) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+                     "malloc: out of memory");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ts = (thread_starter *)apr_palloc(pchild, sizeof(*ts));
+
+    apr_threadattr_create(&thread_attr, pchild);
+    /* 0 means PTHREAD_CREATE_JOINABLE */
+    apr_threadattr_detach_set(thread_attr, 0);
+
+    ts->threads = threads;
+    ts->child_num_arg = child_num_arg;
+    ts->threadattr = thread_attr;
+
+    rv = apr_thread_create(&start_thread_id, thread_attr, start_threads,
+                           ts, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "apr_thread_create: unable to create worker thread");
+        /* In case system resources are maxxed out, we don't want
+           Apache running away with the CPU trying to fork over and
+           over and over again if we exit. */
+        apr_sleep(10 * APR_USEC_PER_SEC);
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    mpm_state = AP_MPMQ_RUNNING;
+
+    /* If we are only running in one_process mode, we will want to
+     * still handle signals. */
+    if (one_process) {
+        /* Block until we get a terminating signal. */
+        apr_signal_thread(check_signal);
+        /* make sure the start thread has finished; signal_threads() 
+         * and join_workers() depend on that
+         */
+        /* XXX join_start_thread() won't be awakened if one of our
+         *     threads encounters a critical error and attempts to
+         *     shutdown this child
+         */
+        join_start_thread(start_thread_id);
+        signal_threads(ST_UNGRACEFUL); /* helps us terminate a little more
+                           * quickly than the dispatch of the signal thread
+                           * beats the Pipe of Death and the browsers
+                           */
+        /* A terminating signal was received. Now join each of the
+         * workers to clean them up.
+         *   If the worker already exited, then the join frees
+         *   their resources and returns.
+         *   If the worker hasn't exited, then this blocks until
+         *   they have (then cleans up).
+         */
+        join_workers(threads);
+    }
+    else { /* !one_process */
+        /* remove SIGTERM from the set of blocked signals...  if one of
+         * the other threads in the process needs to take us down
+         * (e.g., for MaxRequestsPerChild) it will send us SIGTERM
+         */
+        unblock_signal(SIGTERM);
+        join_start_thread(start_thread_id);
+        join_workers(threads);
+    }
+
+    free(threads);
+
+    clean_child_exit(resource_shortage ? APEXIT_CHILDSICK : 0);
+}
+
+static int make_child(server_rec *s, int slot) 
+{
+    int pid;
+
+    if (slot + 1 > ap_max_daemons_limit) {
+        ap_max_daemons_limit = slot + 1;
+    }
+
+    if (one_process) {
+        set_signals();
+        ap_scoreboard_image->parent[slot].pid = getpid();
+        child_main(slot);
+    }
+
+    if ((pid = fork()) == -1) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, 
+                     "fork: Unable to fork new process");
+
+        /* fork didn't succeed. Fix the scoreboard or else
+         * it will say SERVER_STARTING forever and ever
+         */
+        ap_update_child_status_from_indexes(slot, 0, SERVER_DEAD, NULL);
+
+        /* In case system resources are maxxed out, we don't want
+           Apache running away with the CPU trying to fork over and
+           over and over again. */
+        apr_sleep(10 * APR_USEC_PER_SEC);
+
+        return -1;
+    }
+
+    if (!pid) {
+#ifdef HAVE_BINDPROCESSOR
+        /* By default, AIX binds to a single processor.  This bit unbinds
+         * children which will then bind to another CPU.
+         */
+        int status = bindprocessor(BINDPROCESS, (int)getpid(),
+                               PROCESSOR_CLASS_ANY);
+        if (status != OK)
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, 
+                         ap_server_conf,
+                         "processor unbind failed %d", status);
+#endif
+        RAISE_SIGSTOP(MAKE_CHILD);
+
+        apr_signal(SIGTERM, just_die);
+        child_main(slot);
+
+        clean_child_exit(0);
+    }
+    /* else */
+    ap_scoreboard_image->parent[slot].quiescing = 0;
+    ap_scoreboard_image->parent[slot].pid = pid;
+    return 0;
+}
+
+/* start up a bunch of children */
+static void startup_children(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < ap_daemons_limit; ++i) {
+        if (ap_scoreboard_image->parent[i].pid != 0) {
+            continue;
+        }
+        if (make_child(ap_server_conf, i) < 0) {
+            break;
+        }
+        --number_to_start;
+    }
+}
+
+
+/*
+ * idle_spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough idle servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int idle_spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE        (32)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_idle_server_maintenance(void)
+{
+    int i, j;
+    int idle_thread_count;
+    worker_score *ws;
+    process_score *ps;
+    int free_length;
+    int totally_free_length = 0;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead;
+    int total_non_dead;
+
+    /* initialize the free_list */
+    free_length = 0;
+
+    idle_thread_count = 0;
+    last_non_dead = -1;
+    total_non_dead = 0;
+
+    for (i = 0; i < ap_daemons_limit; ++i) {
+        /* Initialization to satisfy the compiler. It doesn't know
+         * that ap_threads_per_child is always > 0 */
+        int status = SERVER_DEAD;
+        int any_dying_threads = 0;
+        int any_dead_threads = 0;
+        int all_dead_threads = 1;
+
+        if (i >= ap_max_daemons_limit && totally_free_length == idle_spawn_rate)
+            break;
+        ps = &ap_scoreboard_image->parent[i];
+        for (j = 0; j < ap_threads_per_child; j++) {
+            ws = &ap_scoreboard_image->servers[i][j];
+            status = ws->status;
+
+            /* XXX any_dying_threads is probably no longer needed    GLA */
+            any_dying_threads = any_dying_threads || 
+                                (status == SERVER_GRACEFUL);
+            any_dead_threads = any_dead_threads || (status == SERVER_DEAD);
+            all_dead_threads = all_dead_threads &&
+                                   (status == SERVER_DEAD ||
+                                    status == SERVER_GRACEFUL);
+
+            /* We consider a starting server as idle because we started it
+             * at least a cycle ago, and if it still hasn't finished starting
+             * then we're just going to swamp things worse by forking more.
+             * So we hopefully won't need to fork more if we count it.
+             * This depends on the ordering of SERVER_READY and SERVER_STARTING.
+             */
+            if (status <= SERVER_READY && status != SERVER_DEAD &&
+                    !ps->quiescing &&
+                    ps->generation == ap_my_generation &&
+                 /* XXX the following shouldn't be necessary if we clean up 
+                  *     properly after seg faults, but we're not yet    GLA 
+                  */     
+                    ps->pid != 0) {
+                ++idle_thread_count;
+            }
+        }
+        if (any_dead_threads && totally_free_length < idle_spawn_rate 
+                && (!ps->pid               /* no process in the slot */
+                    || ps->quiescing)) {   /* or at least one is going away */
+            if (all_dead_threads) {
+                /* great! we prefer these, because the new process can
+                 * start more threads sooner.  So prioritize this slot 
+                 * by putting it ahead of any slots with active threads.
+                 *
+                 * first, make room by moving a slot that's potentially still
+                 * in use to the end of the array
+                 */
+                free_slots[free_length] = free_slots[totally_free_length];
+                free_slots[totally_free_length++] = i;
+            }
+            else {
+                /* slot is still in use - back of the bus
+                 */
+            free_slots[free_length] = i;
+            }
+            ++free_length;
+        }
+        /* XXX if (!ps->quiescing)     is probably more reliable  GLA */
+        if (!any_dying_threads) {
+            last_non_dead = i;
+            ++total_non_dead;
+        }
+    }
+    ap_max_daemons_limit = last_non_dead + 1;
+
+    if (idle_thread_count > max_spare_threads) {
+        /* Kill off one child */
+        ap_mpm_pod_signal(pod);
+        idle_spawn_rate = 1;
+    }
+    else if (idle_thread_count < min_spare_threads) {
+        /* terminate the free list */
+        if (free_length == 0) {
+            /* only report this condition once */
+            static int reported = 0;
+            
+            if (!reported) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, 0, 
+                             ap_server_conf,
+                             "server reached MaxClients setting, consider"
+                             " raising the MaxClients setting");
+                reported = 1;
+            }
+            idle_spawn_rate = 1;
+        }
+        else {
+            if (free_length > idle_spawn_rate) {
+                free_length = idle_spawn_rate;
+            }
+            if (idle_spawn_rate >= 8) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0, 
+                             ap_server_conf,
+                             "server seems busy, (you may need "
+                             "to increase StartServers, ThreadsPerChild "
+                             "or Min/MaxSpareThreads), "
+                             "spawning %d children, there are around %d idle "
+                             "threads, and %d total children", free_length,
+                             idle_thread_count, total_non_dead);
+            }
+            for (i = 0; i < free_length; ++i) {
+                make_child(ap_server_conf, free_slots[i]);
+            }
+            /* the next time around we want to spawn twice as many if this
+             * wasn't good enough, but not if we've just done a graceful
+             */
+            if (hold_off_on_exponential_spawning) {
+                --hold_off_on_exponential_spawning;
+            }
+            else if (idle_spawn_rate < MAX_SPAWN_RATE) {
+                idle_spawn_rate *= 2;
+            }
+        }
+    }
+    else {
+      idle_spawn_rate = 1;
+    }
+}
+
+static void server_main_loop(int remaining_children_to_start)
+{
+    int child_slot;
+    apr_exit_why_e exitwhy;
+    int status, processed_status;
+    apr_proc_t pid;
+    int i;
+
+    while (!restart_pending && !shutdown_pending) {
+        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
+        
+        if (pid.pid != -1) {
+            processed_status = ap_process_child_status(&pid, exitwhy, status);
+            if (processed_status == APEXIT_CHILDFATAL) {
+                shutdown_pending = 1;
+                child_fatal = 1;
+                return;
+            }
+            /* non-fatal death... note that it's gone in the scoreboard. */
+            child_slot = find_child_by_pid(&pid);
+            if (child_slot >= 0) {
+                for (i = 0; i < ap_threads_per_child; i++)
+                    ap_update_child_status_from_indexes(child_slot, i, SERVER_DEAD, 
+                                                        (request_rec *) NULL);
+                
+                ap_scoreboard_image->parent[child_slot].pid = 0;
+                ap_scoreboard_image->parent[child_slot].quiescing = 0;
+                if (processed_status == APEXIT_CHILDSICK) {
+                    /* resource shortage, minimize the fork rate */
+                    idle_spawn_rate = 1;
+                }
+                else if (remaining_children_to_start
+                    && child_slot < ap_daemons_limit) {
+                    /* we're still doing a 1-for-1 replacement of dead
+                     * children with new children
+                     */
+                    make_child(ap_server_conf, child_slot);
+                    --remaining_children_to_start;
+                }
+#if APR_HAS_OTHER_CHILD
+            }
+            else if (apr_proc_other_child_read(&pid, status) == 0) {
+                /* handled */
+#endif
+            }
+            else if (is_graceful) {
+                /* Great, we've probably just lost a slot in the
+                 * scoreboard.  Somehow we don't know about this child.
+                 */
+                ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
+                             ap_server_conf,
+                             "long lost child came home! (pid %ld)",
+                             (long)pid.pid);
+            }
+            /* Don't perform idle maintenance when a child dies,
+             * only do it when there's a timeout.  Remember only a
+             * finite number of children can die, and it's pretty
+             * pathological for a lot to die suddenly.
+             */
+            continue;
+        }
+        else if (remaining_children_to_start) {
+            /* we hit a 1 second timeout in which none of the previous
+             * generation of children needed to be reaped... so assume
+             * they're all done, and pick up the slack if any is left.
+             */
+            startup_children(remaining_children_to_start);
+            remaining_children_to_start = 0;
+            /* In any event we really shouldn't do the code below because
+             * few of the servers we just started are in the IDLE state
+             * yet, so we'd mistakenly create an extra server.
+             */
+            continue;
+        }
+
+        perform_idle_server_maintenance();
+    }
+}
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    int remaining_children_to_start;
+    apr_status_t rv;
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    first_server_limit = server_limit;
+    first_thread_limit = thread_limit;
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "WARNING: Attempt to change ServerLimit or ThreadLimit "
+                     "ignored during restart");
+        changed_limit_at_restart = 0;
+    }
+    
+    /* Initialize cross-process accept lock */
+    ap_lock_fname = apr_psprintf(_pconf, "%s.%" APR_PID_T_FMT,
+                                 ap_server_root_relative(_pconf, ap_lock_fname),
+                                 ap_my_pid);
+
+    rv = apr_proc_mutex_create(&accept_mutex, ap_lock_fname, 
+                               ap_accept_lock_mech, _pconf);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create accept lock");
+        mpm_state = AP_MPMQ_STOPPING;
+        return 1;
+    }
+
+#if APR_USE_SYSVSEM_SERIALIZE
+    if (ap_accept_lock_mech == APR_LOCK_DEFAULT || 
+        ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#else
+    if (ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#endif
+        rv = unixd_set_proc_mutex_perms(accept_mutex);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                         "Couldn't set permissions on cross-process lock; "
+                         "check User and Group directives");
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+    }
+
+    if (!is_graceful) {
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+        /* fix the generation number in the global score; we just got a new,
+         * cleared scoreboard
+         */
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+    }
+
+    set_signals();
+    /* Don't thrash... */
+    if (max_spare_threads < min_spare_threads + ap_threads_per_child)
+        max_spare_threads = min_spare_threads + ap_threads_per_child;
+
+    /* If we're doing a graceful_restart then we're going to see a lot
+     * of children exiting immediately when we get into the main loop
+     * below (because we just sent them AP_SIG_GRACEFUL).  This happens pretty
+     * rapidly... and for each one that exits we'll start a new one until
+     * we reach at least daemons_min_free.  But we may be permitted to
+     * start more than that, so we'll just keep track of how many we're
+     * supposed to start up without the 1 second penalty between each fork.
+     */
+    remaining_children_to_start = ap_daemons_to_start;
+    if (remaining_children_to_start > ap_daemons_limit) {
+        remaining_children_to_start = ap_daemons_limit;
+    }
+    if (!is_graceful) {
+        startup_children(remaining_children_to_start);
+        remaining_children_to_start = 0;
+    }
+    else {
+        /* give the system some time to recover before kicking into
+            * exponential mode */
+        hold_off_on_exponential_spawning = 10;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                "%s configured -- resuming normal operations",
+                ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                "Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+		"AcceptMutex: %s (default: %s)",
+		apr_proc_mutex_name(accept_mutex),
+		apr_proc_mutex_defname());
+#endif
+    restart_pending = shutdown_pending = 0;
+    mpm_state = AP_MPMQ_RUNNING;
+
+    server_main_loop(remaining_children_to_start);
+    mpm_state = AP_MPMQ_STOPPING;
+
+    if (shutdown_pending) {
+        /* Time to gracefully shut down:
+         * Kill child processes, tell them to call child_exit, etc...
+         * (By "gracefully" we don't mean graceful in the same sense as 
+         * "apachectl graceful" where we allow old connections to finish.)
+         */
+	if (unixd_killpg(getpgrp(), SIGTERM) < 0) {
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGTERM");
+	}
+        ap_reclaim_child_processes(1);                /* Start with SIGTERM */
+
+        if (!child_fatal) {
+            /* cleanup pid file on normal shutdown */
+            const char *pidfile = NULL;
+            pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+            if ( pidfile != NULL && unlink(pidfile) == 0)
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0,
+                             ap_server_conf,
+                             "removed PID file %s (pid=%ld)",
+                             pidfile, (long)getpid());
+    
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
+                         ap_server_conf, "caught SIGTERM, shutting down");
+        }
+        return 1;
+    }
+
+    /* we've been told to restart */
+    apr_signal(SIGHUP, SIG_IGN);
+
+    if (one_process) {
+        /* not worth thinking about */
+        return 1;
+    }
+
+    /* advance to the next generation */
+    /* XXX: we really need to make sure this new generation number isn't in
+     * use by any of the children.
+     */
+    ++ap_my_generation;
+    ap_scoreboard_image->global->running_generation = ap_my_generation;
+    
+    if (is_graceful) {
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                     AP_SIG_GRACEFUL_STRING " received.  Doing graceful restart");
+        /* wake up the children...time to die.  But we'll have more soon */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit);
+    
+
+        /* This is mostly for debugging... so that we know what is still
+         * gracefully dealing with existing request.
+         */
+        
+    }
+    else {
+        /* Kill 'em all.  Since the child acts the same on the parents SIGTERM 
+         * and a SIGHUP, we may as well use the same signal, because some user
+         * pthreads are stealing signals from us left and right.
+         */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit);
+
+        ap_reclaim_child_processes(1);                /* Start with SIGTERM */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                    "SIGHUP received.  Attempting to restart");
+    }
+
+    return 0;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int leader_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    apr_status_t rv;
+
+    pconf = p;
+    ap_server_conf = s;
+
+    if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
+                     NULL, "no listening sockets available, shutting down");
+        return DONE;
+    }
+
+    if (!one_process) {
+        if ((rv = ap_mpm_pod_open(pconf, &pod))) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
+                    "Could not open pipe-of-death.");
+            return DONE;
+        }
+    }
+    return OK;
+}
+
+static int leader_pre_config(apr_pool_t *pconf, apr_pool_t *plog, 
+                             apr_pool_t *ptemp)
+{
+    static int restart_num = 0;
+    int no_detach, debug, foreground;
+    ap_directive_t *pdir;
+    ap_directive_t *max_clients = NULL;
+    apr_status_t rv;
+
+    mpm_state = AP_MPMQ_STARTING;
+
+    /* make sure that "ThreadsPerChild" gets set before "MaxClients" */
+    for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next) {
+        if (strncasecmp(pdir->directive, "ThreadsPerChild", 15) == 0) {
+            if (!max_clients) {
+                break; /* we're in the clear, got ThreadsPerChild first */
+            }
+            else {
+                /* now to swap the data */
+                ap_directive_t temp;
+
+                temp.directive = pdir->directive;
+                temp.args = pdir->args;
+                /* Make sure you don't change 'next', or you may get loops! */
+                /* XXX: first_child, parent, and data can never be set
+                 * for these directives, right? -aaron */
+                temp.filename = pdir->filename;
+                temp.line_num = pdir->line_num;
+
+                pdir->directive = max_clients->directive;
+                pdir->args = max_clients->args;
+                pdir->filename = max_clients->filename;
+                pdir->line_num = max_clients->line_num;
+                
+                max_clients->directive = temp.directive;
+                max_clients->args = temp.args;
+                max_clients->filename = temp.filename;
+                max_clients->line_num = temp.line_num;
+                break;
+            }
+        }
+        else if (!max_clients
+                 && strncasecmp(pdir->directive, "MaxClients", 10) == 0) {
+            max_clients = pdir;
+        }
+    }
+
+    debug = ap_exists_config_define("DEBUG");
+
+    if (debug) {
+        foreground = one_process = 1;
+        no_detach = 0;
+    }
+    else {
+        one_process = ap_exists_config_define("ONE_PROCESS");
+        no_detach = ap_exists_config_define("NO_DETACH");
+        foreground = ap_exists_config_define("FOREGROUND");
+    }
+
+    /* sigh, want this only the second time around */
+    if (restart_num++ == 1) {
+        is_graceful = 0;
+
+        if (!one_process && !foreground) {
+            rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
+                                           : APR_PROC_DETACH_DAEMONIZE);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                             "apr_proc_detach failed");
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+        }
+        parent_pid = ap_my_pid = getpid();
+    }
+
+    unixd_pre_config(ptemp);
+    ap_listen_pre_config();
+    ap_daemons_to_start = DEFAULT_START_DAEMON;
+    min_spare_threads = DEFAULT_MIN_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
+    max_spare_threads = DEFAULT_MAX_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
+    ap_daemons_limit = server_limit;
+    ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_lock_fname = DEFAULT_LOCKFILE;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    ap_extended_status = 0;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    return OK;
+}
+
+static void leader_hooks(apr_pool_t *p)
+{
+    /* The leader open_logs phase must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+    one_process = 0;
+
+    ap_hook_open_logs(leader_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+    /* we need to set the MPM state before other pre-config hooks use MPM query
+     * to retrieve it, so register as REALLY_FIRST
+     */
+    ap_hook_pre_config(leader_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
+}
+
+static const char *set_daemons_to_start(cmd_parms *cmd, void *dummy,
+                                        const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_to_start = atoi(arg);
+    return NULL;
+}
+
+static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    min_spare_threads = atoi(arg);
+    if (min_spare_threads <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       min_spare_threads = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    max_spare_threads = atoi(arg);
+    return NULL;
+}
+
+static const char *set_max_clients (cmd_parms *cmd, void *dummy,
+                                     const char *arg) 
+{
+    int max_clients;
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    /* It is ok to use ap_threads_per_child here because we are
+     * sure that it gets set before MaxClients in the pre_config stage. */
+    max_clients = atoi(arg);
+    if (max_clients < ap_threads_per_child) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients (%d) must be at least as large",
+                    max_clients);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " large as ThreadsPerChild (%d). Automatically",
+                    ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " increasing MaxClients to %d.",
+                    ap_threads_per_child);
+       max_clients = ap_threads_per_child;
+    }
+    ap_daemons_limit = max_clients / ap_threads_per_child;
+    if ((max_clients > 0) && (max_clients % ap_threads_per_child)) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients (%d) is not an integer multiple",
+                    max_clients);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " of ThreadsPerChild (%d), lowering MaxClients to %d",
+                    ap_threads_per_child,
+                    ap_daemons_limit * ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " for a maximum of %d child processes,",
+                    ap_daemons_limit);
+       max_clients = ap_daemons_limit * ap_threads_per_child; 
+    }
+    if (ap_daemons_limit > server_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients of %d would require %d servers,",
+                    max_clients, ap_daemons_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " and would exceed the ServerLimit value of %d.",
+                    server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " Automatically lowering MaxClients to %d.  To increase,",
+                    server_limit * ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " please see the ServerLimit directive.");
+       ap_daemons_limit = server_limit;
+    } 
+    else if (ap_daemons_limit < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require MaxClients > 0, setting to 1");
+        ap_daemons_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_threads_per_child (cmd_parms *cmd, void *dummy,
+                                          const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_per_child = atoi(arg);
+    if (ap_threads_per_child > thread_limit) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
+                     "value of %d", ap_threads_per_child,
+                     thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "threads, lowering ThreadsPerChild to %d. To increase, please"
+                     " see the", thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " ThreadLimit directive.");
+        ap_threads_per_child = thread_limit;
+    }
+    else if (ap_threads_per_child < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadsPerChild > 0, setting to 1");
+        ap_threads_per_child = 1;
+    }
+    return NULL;
+}
+
+static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_server_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_server_limit = atoi(arg);
+    /* you cannot change ServerLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_server_limit &&
+        tmp_server_limit != server_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    server_limit = tmp_server_limit;
+    
+    if (server_limit > MAX_SERVER_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ServerLimit of %d exceeds compile time limit "
+                    "of %d servers,", server_limit, MAX_SERVER_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
+       server_limit = MAX_SERVER_LIMIT;
+    } 
+    else if (server_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ServerLimit > 0, setting to 1");
+	server_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_thread_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_thread_limit = atoi(arg);
+    /* you cannot change ThreadLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_thread_limit &&
+        tmp_thread_limit != thread_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    thread_limit = tmp_thread_limit;
+    
+    if (thread_limit > MAX_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ThreadLimit of %d exceeds compile time limit "
+                    "of %d servers,", thread_limit, MAX_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
+       thread_limit = MAX_THREAD_LIMIT;
+    } 
+    else if (thread_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadLimit > 0, setting to 1");
+	thread_limit = 1;
+    }
+    return NULL;
+}
+
+static const command_rec leader_cmds[] = {
+UNIX_DAEMON_COMMANDS,
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("StartServers", set_daemons_to_start, NULL, RSRC_CONF,
+  "Number of child processes launched at server startup"),
+AP_INIT_TAKE1("MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,
+  "Minimum number of idle children, to handle request spikes"),
+AP_INIT_TAKE1("MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,
+  "Maximum number of idle children"),
+AP_INIT_TAKE1("MaxClients", set_max_clients, NULL, RSRC_CONF,
+  "Maximum number of children alive at the same time"),
+AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
+  "Number of threads each child creates"),
+AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF,
+  "Maximum value of MaxClients for this run of Apache"),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+  "Maximum worker threads in a server for this run of Apache"),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_leader_module = {
+    MPM20_MODULE_STUFF,
+    ap_mpm_rewrite_args,        /* hook to run before apache parses args */
+    NULL,                       /* create per-directory config structure */
+    NULL,                       /* merge per-directory config structures */
+    NULL,                       /* create per-server config structure */
+    NULL,                       /* merge per-server config structures */
+    leader_cmds,                /* command apr_table_t */
+    leader_hooks                /* register_hooks */
+};
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/mpm.h
new file mode 100644
index 00000000..1db1d1d0
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/mpm.h
@@ -0,0 +1,51 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "scoreboard.h"
+#include "unixd.h"
+
+#ifndef APACHE_MPM_LEADER_H
+#define APACHE_MPM_LEADER_H
+
+#define LEADER_MPM
+
+#define MPM_NAME "Leader-Follower"
+
+#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+#define AP_MPM_WANT_WAIT_OR_TIMEOUT
+#define AP_MPM_WANT_PROCESS_CHILD_STATUS
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_LOCKFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+#define AP_MPM_WANT_SIGNAL_SERVER
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+#define AP_MPM_WANT_FATAL_SIGNAL_HANDLER
+#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
+
+#define AP_MPM_USES_POD 1
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+#define MPM_ACCEPT_FUNC unixd_accept
+
+extern int ap_threads_per_child;
+extern int ap_max_daemons_limit;
+extern server_rec *ap_server_conf;
+extern char ap_coredump_dir[MAX_STRING_LEN];
+
+#endif /* APACHE_MPM_LEADER_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/mpm_default.h
new file mode 100644
index 00000000..d5a33989
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/leader/mpm_default.h
@@ -0,0 +1,69 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of servers to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_DAEMON
+#define DEFAULT_START_DAEMON 3
+#endif
+
+/* Maximum number of *free* server processes --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_FREE_DAEMON
+#define DEFAULT_MAX_FREE_DAEMON 10
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_FREE_DAEMON
+#define DEFAULT_MIN_FREE_DAEMON 3
+#endif
+
+#ifndef DEFAULT_THREADS_PER_CHILD
+#define DEFAULT_THREADS_PER_CHILD 25
+#endif
+
+/* File used for accept locking, when we use a file */
+#ifndef DEFAULT_LOCKFILE
+#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/Makefile.in
new file mode 100644
index 00000000..374f1306
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libperchild.la
+LTLIBRARY_SOURCES = perchild.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/config5.m4 b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/config5.m4
new file mode 100644
index 00000000..368052f5
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/config5.m4
@@ -0,0 +1,6 @@
+dnl ## XXX - Need a more thorough check of the proper flags to use
+
+if test "$MPM_NAME" = "perchild" ; then
+    AC_CHECK_FUNCS(pthread_kill) 
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/mpm.h
new file mode 100644
index 00000000..84e808db
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/mpm.h
@@ -0,0 +1,59 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "httpd.h"
+#include "mpm_default.h"
+#include "unixd.h"
+
+#ifndef APACHE_MPM_PERCHILD_H
+#define APACHE_MPM_PERCHILD_H
+
+#define PERCHILD_MPM
+
+#define MPM_NAME "Perchild"
+
+#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+#define AP_MPM_WANT_WAIT_OR_TIMEOUT
+#define AP_MPM_WANT_PROCESS_CHILD_STATUS
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_LOCKFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+#define AP_MPM_WANT_SIGNAL_SERVER
+#define AP_MPM_WANT_FATAL_SIGNAL_HANDLER
+#define AP_MPM_USES_POD
+
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+#define MPM_ACCEPT_FUNC unixd_accept
+
+/* Table of child status */
+#define SERVER_DEAD 0
+#define SERVER_DYING 1
+#define SERVER_ALIVE 2
+
+typedef struct ap_ctable{
+    pid_t pid;
+    unsigned char status;
+} ap_ctable;
+
+extern int ap_threads_per_child;
+extern int ap_max_daemons_limit;
+extern server_rec *ap_server_conf;
+
+#endif /* APACHE_MPM_PERCHILD_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/mpm_default.h
new file mode 100644
index 00000000..ece876b5
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/mpm_default.h
@@ -0,0 +1,71 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of threads to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_THREAD
+#define DEFAULT_START_THREAD 5
+#endif
+
+/* Maximum number of *free* server threads --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_SPARE_THREAD
+#define DEFAULT_MAX_SPARE_THREAD 10
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_SPARE_THREAD
+#define DEFAULT_MIN_SPARE_THREAD 5
+#endif
+
+/* Number of servers to spawn off by default
+ */
+#ifndef DEFAULT_NUM_DAEMON
+#define DEFAULT_NUM_DAEMON 2
+#endif
+
+/* File used for accept locking, when we use a file */
+#ifndef DEFAULT_LOCKFILE
+#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/perchild.c b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/perchild.c
new file mode 100644
index 00000000..8b205beb
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/perchild/perchild.c
@@ -0,0 +1,2045 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr_hash.h"
+#include "apr_strings.h"
+#include "apr_pools.h"
+#include "apr_portable.h"
+#include "apr_file_io.h"
+#include "apr_signal.h"
+
+#define APR_WANT_IOVEC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+
+#if !APR_HAS_THREADS
+#error The perchild MPM requires APR threads, but they are unavailable.
+#endif  
+
+#define CORE_PRIVATE 
+ 
+#include "ap_config.h"
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"    /* for read_config */ 
+#include "http_core.h"      /* for get_remote_host */ 
+#include "http_protocol.h"
+#include "http_connection.h"
+#include "ap_mpm.h"
+#include "unixd.h"
+#include "mpm_common.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+#include "mpm.h"
+#include "scoreboard.h"
+#include "util_filter.h"
+#include "apr_poll.h"
+
+#ifdef HAVE_POLL_H
+#include <poll.h>
+#endif
+#ifdef HAVE_SYS_POLL_H
+#include <sys/poll.h>
+#endif
+
+/* ### should be APR-ized */
+#include <grp.h>
+#include <pwd.h>
+#include <sys/stat.h>
+#include <sys/un.h>
+#include <setjmp.h>
+#ifdef HAVE_SYS_PROCESSOR_H
+#include <sys/processor.h> /* for bindprocessor() */
+#endif
+
+/*
+ * Define some magic numbers that we use for the state of the incomming
+ * request. These must be < 0 so they don't collide with a file descriptor.
+ */
+#define AP_PERCHILD_THISCHILD -1
+#define AP_PERCHILD_OTHERCHILD -2
+
+/* Limit on the threads per process.  Clients will be locked out if more than
+ * this * server_limit are needed.
+ *
+ * We keep this for one reason it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_THREAD_LIMIT
+#define DEFAULT_THREAD_LIMIT 64 
+#endif
+
+/* Admin can't tune ThreadLimit beyond MAX_THREAD_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_THREAD_LIMIT
+#define MAX_THREAD_LIMIT 20000
+#endif 
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons --- first off,
+ * in case something goes seriously wrong, we want to stop the fork bomb
+ * short of actually crashing the machine we're running on by filling some
+ * kernel table.  Secondly, it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_SERVER_LIMIT
+#define DEFAULT_SERVER_LIMIT 8 
+#endif
+
+/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_SERVER_LIMIT
+#define MAX_SERVER_LIMIT 20000
+#endif
+
+/*
+ * Actual definitions of config globals
+ */
+
+static int threads_to_start = 0;         /* Worker threads per child */
+static int min_spare_threads = 0;
+static int max_spare_threads = 0;
+static int max_threads = 0;
+static int server_limit = DEFAULT_SERVER_LIMIT;
+static int first_server_limit;
+static int thread_limit = DEFAULT_THREAD_LIMIT;
+static int first_thread_limit;
+static int changed_limit_at_restart;
+static int num_daemons = 0;
+static int curr_child_num = 0;
+static int workers_may_exit = 0;
+static int requests_this_child;
+static int num_listensocks = 0;
+static ap_pod_t *pod;
+static jmp_buf jmpbuffer;
+
+struct child_info_t {
+    uid_t uid;
+    gid_t gid;
+    int input;       /* The socket descriptor */
+    int output;      /* The socket descriptor */
+};
+
+typedef struct {
+    const char *sockname;       /* The base name for the socket */
+    const char *fullsockname;   /* socket base name + extension */
+    int        input;           /* The socket descriptor */
+    int        output;          /* The socket descriptor */
+} perchild_server_conf;
+
+typedef struct child_info_t child_info_t;
+
+/* Tables used to determine the user and group each child process should
+ * run as.  The hash table is used to correlate a server name with a child
+ * process.
+ */
+static child_info_t *child_info_table;
+static int          *thread_socket_table;
+struct ap_ctable    *ap_child_table;
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with NumServers changes across AP_SIG_GRACEFUL restarts.  We 
+ * use this value to optimize routines that have to scan the entire child 
+ * table.
+ *
+ * XXX - It might not be worth keeping this code in. There aren't very
+ * many child processes in this MPM.
+ */
+int ap_max_daemons_limit = -1;
+int ap_threads_per_child; /* XXX not part of API!  axe it! */
+
+module AP_MODULE_DECLARE_DATA mpm_perchild_module;
+
+static apr_file_t *pipe_of_death_in = NULL;
+static apr_file_t *pipe_of_death_out = NULL;
+static apr_thread_mutex_t *pipe_of_death_mutex;
+
+/* *Non*-shared http_main globals... */
+
+server_rec *ap_server_conf;
+
+/* one_process --- debugging mode variable; can be set from the command line
+ * with the -X flag.  If set, this gets you the child_main loop running
+ * in the process which originally started up (no detach, no make_child),
+ * which is a pretty nice debugging environment.  (You'll get a SIGHUP
+ * early in standalone_main; just continue through.  This is the server
+ * trying to kill off any child processes which it might have lying
+ * around --- Apache doesn't keep track of their pids, it just sends
+ * SIGHUP to the process group, ignoring it in the root process.
+ * Continue through and you'll be fine.).
+ */
+
+static int one_process = 0;
+
+#ifdef DEBUG_SIGSTOP
+int raise_sigstop_flags;
+#endif
+
+static apr_pool_t *pconf;              /* Pool for config stuff */
+static apr_pool_t *pchild;             /* Pool for httpd child stuff */
+static apr_pool_t *thread_pool_parent; /* Parent of per-thread pools */
+static apr_thread_mutex_t *thread_pool_parent_mutex;
+
+static int child_num;
+static unsigned int my_pid; /* Linux getpid() doesn't work except in 
+                      main thread. Use this instead */
+/* Keep track of the number of worker threads currently active */
+static int worker_thread_count;
+static apr_thread_mutex_t *worker_thread_count_mutex;
+static int *worker_thread_free_ids;
+static apr_threadattr_t *worker_thread_attr;
+
+/* Keep track of the number of idle worker threads */
+static int idle_thread_count;
+static apr_thread_mutex_t *idle_thread_count_mutex;
+
+/* Locks for accept serialization */
+#ifdef NO_SERIALIZED_ACCEPT
+#define SAFE_ACCEPT(stmt) APR_SUCCESS
+#else
+#define SAFE_ACCEPT(stmt) (stmt)
+static apr_proc_mutex_t *process_accept_mutex;
+#endif /* NO_SERIALIZED_ACCEPT */
+static apr_thread_mutex_t *thread_accept_mutex;
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_max_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_STATIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = server_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = max_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = min_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = max_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS; 
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = num_daemons;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+/* a clean exit from a child with proper cleanup */
+static void clean_child_exit(int code)
+{
+    if (pchild) {
+        apr_pool_destroy(pchild);
+    }
+    exit(code);
+}
+
+static void just_die(int sig)
+{
+    clean_child_exit(0);
+}
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+static int volatile child_fatal;
+/* we don't currently track ap_my_generation, but mod_status 
+ * references it so it must be defined */
+ap_generation_t volatile ap_my_generation=0;
+
+/*
+ * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
+ * functions to initiate shutdown or restart without relying on signals. 
+ * Previously this was initiated in sig_term() and restart() signal handlers, 
+ * but we want to be able to start a shutdown/restart from other sources --
+ * e.g. on Win32, from the service manager. Now the service manager can
+ * call ap_start_shutdown() or ap_start_restart() as appropiate.  Note that
+ * these functions can also be called by the child processes, since global
+ * variables are no longer used to pass on the required action to the parent.
+ *
+ * These should only be called from the parent process itself, since the
+ * parent process will use the shutdown_pending and restart_pending variables
+ * to determine whether to shutdown or restart. The child process should
+ * call signal_parent() directly to tell the parent to die -- this will
+ * cause neither of those variable to be set, which the parent will
+ * assume means something serious is wrong (which it will be, for the
+ * child to force an exit) and so do an exit anyway.
+ */
+
+static void ap_start_shutdown(void)
+{
+    if (shutdown_pending == 1) {
+        /* Um, is this _probably_ not an error, if the user has
+         * tried to do a shutdown twice quickly, so we won't
+         * worry about reporting it.
+         */
+        return;
+    }
+    shutdown_pending = 1;
+}
+
+/* do a graceful restart if graceful == 1 */
+static void ap_start_restart(int graceful)
+{
+
+    if (restart_pending == 1) {
+        /* Probably not an error - don't bother reporting it */
+        return;
+    }
+    restart_pending = 1;
+    is_graceful = graceful;
+}
+
+static void sig_term(int sig)
+{
+    ap_start_shutdown();
+}
+
+static void restart(int sig)
+{
+#ifndef WIN32
+    ap_start_restart(sig == AP_SIG_GRACEFUL);
+#else
+    ap_start_restart(1);
+#endif
+}
+
+static void set_signals(void)
+{
+#ifndef NO_USE_SIGACTION
+    struct sigaction sa;
+#endif
+
+    if (!one_process) {
+        ap_fatal_signal_setup(ap_server_conf, pconf);
+    }
+
+#ifndef NO_USE_SIGACTION
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+
+    sa.sa_handler = sig_term;
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(SIGTERM)");
+#ifdef SIGINT
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(SIGINT)");
+#endif
+#ifdef SIGXCPU
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXCPU, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(SIGXCPU)");
+#endif
+#ifdef SIGXFSZ
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXFSZ, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(SIGXFSZ)");
+#endif
+#ifdef SIGPIPE
+    sa.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(SIGPIPE)");
+#endif
+
+    /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy 
+     * processing one */
+    sigaddset(&sa.sa_mask, SIGHUP);
+    sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
+    sa.sa_handler = restart;
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(SIGHUP)");
+    if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                     "sigaction(" AP_SIG_GRACEFUL_STRING ")");
+#else
+    if (!one_process) {
+#ifdef SIGXCPU
+        apr_signal(SIGXCPU, SIG_DFL);
+#endif /* SIGXCPU */
+#ifdef SIGXFSZ
+        apr_signal(SIGXFSZ, SIG_DFL);
+#endif /* SIGXFSZ */
+    }
+
+    apr_signal(SIGTERM, sig_term);
+#ifdef SIGHUP
+    apr_signal(SIGHUP, restart);
+#endif /* SIGHUP */
+#ifdef AP_SIG_GRACEFUL
+    apr_signal(AP_SIG_GRACEFUL, restart);
+#endif /* AP_SIG_GRACEFUL */
+#ifdef SIGPIPE
+    apr_signal(SIGPIPE, SIG_IGN);
+#endif /* SIGPIPE */
+
+#endif
+}
+
+/*****************************************************************
+ * Here follows a long bunch of generic server bookkeeping stuff...
+ */
+
+int ap_graceful_stop_signalled(void)
+{
+    /* XXX - Does this really work? - Manoj */
+    return is_graceful;
+}
+
+/*****************************************************************
+ * Child process main loop.
+ */
+
+static void process_socket(apr_pool_t *p, apr_socket_t *sock, long conn_id,
+                           apr_bucket_alloc_t *bucket_alloc)
+{
+    conn_rec *current_conn;
+    int csd;
+    apr_status_t rv;
+    int thread_num = conn_id % thread_limit;
+    ap_sb_handle_t *sbh;
+
+    if ((rv = apr_os_sock_get(&csd, sock)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv, NULL, "apr_os_sock_get");
+    }
+
+    if (thread_socket_table[thread_num] < 0) {
+        ap_sock_disable_nagle(sock);
+    }
+
+    ap_create_sb_handle(&sbh, p, conn_id / thread_limit, thread_num);
+    current_conn = ap_run_create_connection(p, ap_server_conf, sock, conn_id, 
+                                            sbh, bucket_alloc);
+    if (current_conn) {
+        ap_process_connection(current_conn, sock);
+        ap_lingering_close(current_conn);
+    }
+}
+
+static int perchild_process_connection(conn_rec *c)
+{
+    ap_filter_t *f;
+    apr_bucket_brigade *bb;
+    core_net_rec *net;
+
+    apr_pool_userdata_get((void **)&bb, "PERCHILD_SOCKETS", c->pool);
+    if (bb != NULL) {
+        for (f = c->output_filters; f != NULL; f = f->next) {
+            if (!strcmp(f->frec->name, "core")) {
+                break;
+            }
+        }
+        if (f != NULL) {
+            net = f->ctx;
+            net->in_ctx = apr_palloc(c->pool, sizeof(*net->in_ctx));
+            net->in_ctx->b = bb;
+        }
+    }
+    return DECLINED;
+}
+    
+
+static void *worker_thread(apr_thread_t *, void *);
+
+/* Starts a thread as long as we're below max_threads */
+static int start_thread(void)
+{
+    apr_thread_t *thread;
+    int rc;
+
+    apr_thread_mutex_lock(worker_thread_count_mutex);
+    if (worker_thread_count < max_threads - 1) {
+        rc = apr_thread_create(&thread, worker_thread_attr, worker_thread,
+                 &worker_thread_free_ids[worker_thread_count], pchild);
+        if (rc != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_ALERT, rc, ap_server_conf,
+                         "apr_thread_create: unable to create worker thread");
+            /* In case system resources are maxxed out, we don't want
+               Apache running away with the CPU trying to fork over and
+               over and over again if we exit. */
+            sleep(10);
+            workers_may_exit = 1;
+            apr_thread_mutex_unlock(worker_thread_count_mutex);
+            return 0;
+        }
+        else {
+            worker_thread_count++;
+        }
+    }
+    else {
+        static int reported = 0;
+        
+        if (!reported) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, 0,
+                         ap_server_conf,
+                         "server reached MaxThreadsPerChild setting, "
+                         "consider raising the MaxThreadsPerChild or "
+                         "NumServers settings");
+            reported = 1;
+        }
+        apr_thread_mutex_unlock(worker_thread_count_mutex);
+        return 0;
+    }
+    apr_thread_mutex_unlock(worker_thread_count_mutex);
+    return 1;
+
+}
+
+/* Sets workers_may_exit if we received a character on the pipe_of_death */
+static apr_status_t check_pipe_of_death(void **csd, ap_listen_rec *lr,
+                                        apr_pool_t *ptrans)
+{
+    apr_thread_mutex_lock(pipe_of_death_mutex);
+    if (!workers_may_exit) {
+        int ret;
+        char pipe_read_char;
+        apr_size_t n = 1;
+
+        ret = apr_recv(lr->sd, &pipe_read_char, &n);
+        if (APR_STATUS_IS_EAGAIN(ret)) {
+            /* It lost the lottery. It must continue to suffer
+             * through a life of servitude. */
+        }
+        else {
+            /* It won the lottery (or something else is very
+             * wrong). Embrace death with open arms. */
+            workers_may_exit = 1;
+        }
+    }
+    apr_thread_mutex_unlock(pipe_of_death_mutex);
+    return APR_SUCCESS;
+}
+
+static apr_status_t receive_from_other_child(void **csd, ap_listen_rec *lr,
+                                             apr_pool_t *ptrans)
+{
+    struct msghdr msg;
+    struct cmsghdr *cmsg;
+    char buffer[HUGE_STRING_LEN * 2], *headers, *body;
+    int headerslen, bodylen;
+    struct iovec iov;
+    int ret, dp;
+    apr_os_sock_t sd;
+    apr_bucket_alloc_t *alloc = apr_bucket_alloc_create(ptrans);
+    apr_bucket_brigade *bb = apr_brigade_create(ptrans, alloc);
+    apr_bucket *bucket;
+
+    apr_os_sock_get(&sd, lr->sd);
+
+    iov.iov_base = buffer;
+    iov.iov_len = sizeof(buffer);
+
+    msg.msg_name = NULL;
+    msg.msg_namelen = 0;
+    msg.msg_iov = &iov;
+    msg.msg_iovlen = 1;
+
+    cmsg = apr_palloc(ptrans, sizeof(*cmsg) + sizeof(sd));
+    cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sd);
+    msg.msg_control = cmsg;
+    msg.msg_controllen = cmsg->cmsg_len;
+
+    ret = recvmsg(sd, &msg, 0);
+
+    memcpy(&dp, CMSG_DATA(cmsg), sizeof(dp));
+
+    *csd = NULL; /* tell apr_os_sock_put() to allocate new apr_socket_t */
+    apr_os_sock_put((apr_socket_t **)csd, &dp, ptrans);
+
+    bucket = apr_bucket_eos_create(alloc);
+    APR_BRIGADE_INSERT_HEAD(bb, bucket);
+    bucket = apr_bucket_socket_create(*csd, alloc);
+    APR_BRIGADE_INSERT_HEAD(bb, bucket);
+
+    body = strchr(iov.iov_base, 0);
+    if (!body) {
+        return 1;
+    }
+
+    body++;
+    bodylen = strlen(body);
+
+    headers = iov.iov_base;
+    headerslen = body - headers;
+
+    bucket = apr_bucket_heap_create(body, bodylen, NULL, alloc);
+    APR_BRIGADE_INSERT_HEAD(bb, bucket);
+    bucket = apr_bucket_heap_create(headers, headerslen, NULL, alloc);
+    APR_BRIGADE_INSERT_HEAD(bb, bucket);
+
+    apr_pool_userdata_set(bb, "PERCHILD_SOCKETS", NULL, ptrans);
+
+    return 0;
+}
+
+/* idle_thread_count should be incremented before starting a worker_thread */
+
+static void *worker_thread(apr_thread_t *thd, void *arg)
+{
+    void *csd;
+    apr_pool_t *tpool;      /* Pool for this thread           */
+    apr_pool_t *ptrans;     /* Pool for per-transaction stuff */
+    volatile int thread_just_started = 1;
+    int srv;
+    int thread_num = *((int *) arg);
+    long conn_id = child_num * thread_limit + thread_num;
+    apr_pollfd_t *pollset;
+    apr_status_t rv;
+    ap_listen_rec *lr, *last_lr = ap_listeners;
+    int n;
+    apr_bucket_alloc_t *bucket_alloc;
+
+    apr_thread_mutex_lock(thread_pool_parent_mutex);
+    apr_pool_create(&tpool, thread_pool_parent);
+    apr_thread_mutex_unlock(thread_pool_parent_mutex);
+    apr_pool_create(&ptrans, tpool);
+
+    (void) ap_update_child_status_from_indexes(child_num, thread_num, 
+                                               SERVER_STARTING,
+                                               (request_rec *) NULL);
+
+    bucket_alloc = apr_bucket_alloc_create(apr_thread_pool_get(thd));
+
+    apr_poll_setup(&pollset, num_listensocks, tpool);
+    for(lr = ap_listeners; lr != NULL; lr = lr->next) {
+        int fd;
+        apr_poll_socket_add(pollset, lr->sd, APR_POLLIN);
+
+        apr_os_sock_get(&fd, lr->sd);
+    }
+
+    while (!workers_may_exit) {
+        workers_may_exit |= ((ap_max_requests_per_child != 0)
+                            && (requests_this_child <= 0));
+        if (workers_may_exit) break;
+        if (!thread_just_started) {
+            apr_thread_mutex_lock(idle_thread_count_mutex);
+            if (idle_thread_count < max_spare_threads) {
+                idle_thread_count++;
+                apr_thread_mutex_unlock(idle_thread_count_mutex);
+            }
+            else {
+                apr_thread_mutex_unlock(idle_thread_count_mutex);
+                break;
+            }
+        }
+        else {
+            thread_just_started = 0;
+        }
+
+        (void) ap_update_child_status_from_indexes(child_num, thread_num, 
+                                                   SERVER_READY,
+                                                   (request_rec *) NULL);
+
+        apr_thread_mutex_lock(thread_accept_mutex);
+        if (workers_may_exit) {
+            apr_thread_mutex_unlock(thread_accept_mutex);
+            break;
+        }
+        if ((rv = SAFE_ACCEPT(apr_proc_mutex_lock(process_accept_mutex)))
+            != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                         "apr_proc_mutex_lock failed. Attempting to shutdown "
+                         "process gracefully.");
+            workers_may_exit = 1;
+        }
+
+        while (!workers_may_exit) {
+            apr_int16_t event;
+            srv = apr_poll(pollset, num_listensocks, &n, -1);
+
+            if (srv != APR_SUCCESS) {
+                if (APR_STATUS_IS_EINTR(srv)) {
+                    continue;
+                }
+
+                /* apr_poll() will only return errors in catastrophic
+                 * circumstances. Let's try exiting gracefully, for now. */
+                ap_log_error(APLOG_MARK, APLOG_ERR, srv, (const server_rec *)
+                             ap_server_conf, "apr_poll: (listen)");
+                workers_may_exit = 1;
+            }
+            if (workers_may_exit) break;
+
+            /* find a listener */
+            lr = last_lr;
+            do {
+                lr = lr->next;
+                if (lr == NULL) {
+                    lr = ap_listeners;
+                }
+                /* XXX: Should we check for POLLERR? */
+                apr_poll_revents_get(&event, lr->sd, pollset);
+                if (event & (APR_POLLIN)) {
+                    last_lr = lr;
+                    goto got_fd;
+                }
+            } while (lr != last_lr);
+        }
+    got_fd:
+        if (!workers_may_exit) {
+            rv = lr->accept_func(&csd, lr, ptrans);
+            if (rv == APR_EGENERAL) {
+                /* E[NM]FILE, ENOMEM, etc */
+                workers_may_exit = 1;
+            }
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(process_accept_mutex)))
+                != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to shutdown "
+                             "process gracefully.");
+                workers_may_exit = 1;
+            }
+            apr_thread_mutex_unlock(thread_accept_mutex);
+            apr_thread_mutex_lock(idle_thread_count_mutex);
+            if (idle_thread_count > min_spare_threads) {
+                idle_thread_count--;
+            }
+            else {
+                if (!start_thread()) {
+                    idle_thread_count--;
+                }
+            }
+            apr_thread_mutex_unlock(idle_thread_count_mutex);
+            if (setjmp(jmpbuffer) != 1) {
+                process_socket(ptrans, csd, conn_id, bucket_alloc);
+            }
+            else {
+                thread_socket_table[thread_num] = AP_PERCHILD_THISCHILD;
+            }  
+            requests_this_child--;
+        }
+        else {
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(process_accept_mutex)))
+                != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to shutdown "
+                             "process gracefully.");
+                workers_may_exit = 1;
+            }
+            apr_thread_mutex_unlock(thread_accept_mutex);
+            apr_thread_mutex_lock(idle_thread_count_mutex);
+            idle_thread_count--;
+            apr_thread_mutex_unlock(idle_thread_count_mutex);
+        break;
+        }
+        apr_pool_clear(ptrans);
+    }
+
+    apr_thread_mutex_lock(thread_pool_parent_mutex);
+    ap_update_child_status_from_indexes(child_num, thread_num, SERVER_DEAD,
+                                        (request_rec *) NULL);
+    apr_pool_destroy(tpool);
+    apr_thread_mutex_unlock(thread_pool_parent_mutex);
+    apr_thread_mutex_lock(worker_thread_count_mutex);
+    worker_thread_count--;
+    worker_thread_free_ids[worker_thread_count] = thread_num;
+    if (worker_thread_count == 0) {
+        /* All the threads have exited, now finish the shutdown process
+         * by signalling the sigwait thread */
+        kill(my_pid, SIGTERM);
+    }
+    apr_thread_mutex_unlock(worker_thread_count_mutex);
+
+    apr_bucket_alloc_destroy(bucket_alloc);
+
+    return NULL;
+}
+
+
+
+/* Set group privileges.
+ *
+ * Note that we use the username as set in the config files, rather than
+ * the lookup of to uid --- the same uid may have multiple passwd entries,
+ * with different sets of groups for each.
+ */
+
+static int set_group_privs(uid_t uid, gid_t gid)
+{
+    if (!geteuid()) {
+        const char *name;
+
+        /* Get username if passed as a uid */
+
+        struct passwd *ent;
+
+        if ((ent = getpwuid(uid)) == NULL) {
+            ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
+                         "getpwuid: couldn't determine user name from uid %u, "
+                         "you probably need to modify the User directive",
+                         (unsigned)uid);
+            return -1;
+        }
+
+        name = ent->pw_name;
+
+        /*
+         * Set the GID before initgroups(), since on some platforms
+         * setgid() is known to zap the group list.
+         */
+        if (setgid(gid) == -1) {
+            ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
+                         "setgid: unable to set group id to Group %u",
+                         (unsigned)gid);
+            return -1;
+        }
+
+        /* Reset `groups' attributes. */
+
+        if (initgroups(name, gid) == -1) {
+            ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
+                         "initgroups: unable to set groups for User %s "
+                         "and Group %u", name, (unsigned)gid);
+            return -1;
+        }
+    }
+    return 0;
+}
+
+
+static int perchild_setup_child(int childnum)
+{
+    child_info_t *ug = &child_info_table[childnum];
+
+    if (ug->uid == -1 && ug->gid == -1) {
+        return unixd_setup_child();
+    }
+    if (set_group_privs(ug->uid, ug->gid)) {
+        return -1;
+    }
+    /* Only try to switch if we're running as root */
+    if (!geteuid()
+        && (
+#ifdef _OSD_POSIX
+            os_init_job_environment(server_conf, unixd_config.user_name,
+                                    one_process) != 0 ||
+#endif
+            setuid(ug->uid) == -1)) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, NULL,
+                     "setuid: unable to change to uid: %ld",
+                     (long) ug->uid);
+        return -1;
+    }
+    return 0;
+}
+
+static int check_signal(int signum)
+{
+    switch (signum) {
+    case SIGTERM:
+    case SIGINT:
+        just_die(signum);
+        return 1;
+    }
+    return 0;
+}                                                                               
+
+typedef struct perchild_header {
+    char *headers;
+    apr_pool_t *p;
+} perchild_header;
+
+/* Send a single HTTP header field to the client.  Note that this function
+ * is used in calls to table_do(), so their interfaces are co-dependent.
+ * In other words, don't change this one without checking table_do in alloc.c.
+ * It returns true unless there was a write error of some kind.
+ */
+static int perchild_header_field(perchild_header *h,
+                             const char *fieldname, const char *fieldval)
+{
+    apr_pstrcat(h->p, h->headers, fieldname, ": ", fieldval, CRLF, NULL); 
+    return 1;
+}
+
+
+static void child_main(int child_num_arg)
+{
+    int i;
+    apr_status_t rv;
+    apr_socket_t *sock = NULL;
+    ap_listen_rec *lr;
+    
+    my_pid = getpid();
+    ap_fatal_signal_child_setup(ap_server_conf);
+    child_num = child_num_arg;
+    apr_pool_create(&pchild, pconf);
+
+    for (lr = ap_listeners ; lr->next != NULL; lr = lr->next) {
+        continue;
+    }
+
+    apr_os_sock_put(&sock, &child_info_table[child_num].input, pconf);
+    lr->next = apr_palloc(pconf, sizeof(*lr));
+    lr->next->sd = sock;
+    lr->next->active = 1;
+    lr->next->accept_func = receive_from_other_child;
+    lr->next->next = NULL;
+    lr = lr->next;
+    num_listensocks++;
+
+    /*stuff to do before we switch id's, so we have permissions.*/
+
+    rv = SAFE_ACCEPT(apr_proc_mutex_child_init(&process_accept_mutex, 
+                                               ap_lock_fname, pchild));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize cross-process lock in child");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (perchild_setup_child(child_num)) {
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_run_child_init(pchild, ap_server_conf);
+
+    /*done with init critical section */
+
+    apr_setup_signal_thread();
+
+    requests_this_child = ap_max_requests_per_child;
+    
+
+    /* Setup worker threads */
+
+    if (threads_to_start > max_threads) {
+        threads_to_start = max_threads;
+    }
+    idle_thread_count = threads_to_start;
+    worker_thread_count = 0;
+    worker_thread_free_ids = (int *)apr_pcalloc(pchild, thread_limit * sizeof(int));
+    for (i = 0; i < max_threads; i++) {
+        worker_thread_free_ids[i] = i;
+    }
+    apr_pool_create(&thread_pool_parent, pchild);
+    apr_thread_mutex_create(&thread_pool_parent_mutex, 
+                    APR_THREAD_MUTEX_DEFAULT, pchild);
+    apr_thread_mutex_create(&idle_thread_count_mutex, 
+                    APR_THREAD_MUTEX_DEFAULT, pchild);
+    apr_thread_mutex_create(&worker_thread_count_mutex,
+                    APR_THREAD_MUTEX_DEFAULT, pchild);
+    apr_thread_mutex_create(&pipe_of_death_mutex,
+                    APR_THREAD_MUTEX_DEFAULT, pchild);
+    apr_thread_mutex_create(&thread_accept_mutex,
+                    APR_THREAD_MUTEX_DEFAULT, pchild);
+
+    apr_threadattr_create(&worker_thread_attr, pchild);
+    apr_threadattr_detach_set(worker_thread_attr, 1);                                     
+
+    /* We are creating worker threads right now */
+    for (i=0; i < threads_to_start; i++) {
+        /* start_thread shouldn't fail here */
+        if (!start_thread()) {
+            break;
+        }
+    }
+
+    apr_signal_thread(check_signal);
+}
+
+static int make_child(server_rec *s, int slot)
+{
+    int pid;
+
+    if (slot + 1 > ap_max_daemons_limit) {
+        ap_max_daemons_limit = slot + 1;
+    }
+
+    if (one_process) {
+        set_signals();
+        ap_child_table[slot].pid = getpid();
+        ap_child_table[slot].status = SERVER_ALIVE;
+        child_main(slot);
+    }
+    (void) ap_update_child_status_from_indexes(slot, 0, SERVER_STARTING,
+                                               (request_rec *) NULL);
+
+    if ((pid = fork()) == -1) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, errno, s,
+                     "fork: Unable to fork new process");
+        /* In case system resources are maxxed out, we don't want
+         * Apache running away with the CPU trying to fork over and
+         * over and over again. */
+        sleep(10);
+
+        return -1;
+    }
+
+    if (!pid) {
+#ifdef HAVE_BINDPROCESSOR
+        /* By default, AIX binds to a single processor.  This bit unbinds
+         * children which will then bind to another CPU.
+         */
+        int status = bindprocessor(BINDPROCESS, (int)getpid(),
+                                   PROCESSOR_CLASS_ANY);
+        if (status != OK) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, 
+                         ap_server_conf, "processor unbind failed %d", status);
+        }
+#endif
+
+        RAISE_SIGSTOP(MAKE_CHILD);
+
+        /* XXX - For an unthreaded server, a signal handler will be necessary
+         * apr_signal(SIGTERM, just_die);
+         */
+        child_main(slot);
+        clean_child_exit(0);
+    }
+    /* else */
+    ap_child_table[slot].pid = pid;
+    ap_child_table[slot].status = SERVER_ALIVE;
+
+    return 0;
+}
+
+/* start up a bunch of children */
+static int startup_children(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < num_daemons; ++i) {
+        if (ap_child_table[i].pid) {
+            continue;
+        }
+        if (make_child(ap_server_conf, i) < 0) {
+            break;
+        }
+        --number_to_start;
+    }
+    return number_to_start;
+}
+
+
+/*
+ * spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE  (32)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_child_maintenance(void)
+{
+    int i;
+    int free_length;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead = -1;
+
+    /* initialize the free_list */
+    free_length = 0;
+    
+    for (i = 0; i < num_daemons; ++i) {
+        if (ap_child_table[i].pid == 0) {
+            if (free_length < spawn_rate) {
+                free_slots[free_length] = i;
+                ++free_length;
+            }
+        }
+        else {
+            last_non_dead = i;
+        }
+
+        if (i >= ap_max_daemons_limit && free_length >= spawn_rate) {
+            break;
+        }
+    }
+    ap_max_daemons_limit = last_non_dead + 1;
+
+    if (free_length > 0) {
+        for (i = 0; i < free_length; ++i) {
+            make_child(ap_server_conf, free_slots[i]);
+        }
+        /* the next time around we want to spawn twice as many if this
+         * wasn't good enough, but not if we've just done a graceful
+         */
+        if (hold_off_on_exponential_spawning) {
+            --hold_off_on_exponential_spawning;
+        }
+        else if (spawn_rate < MAX_SPAWN_RATE) {
+            spawn_rate *= 2;
+        }
+    }
+    else {
+        spawn_rate = 1;
+    }
+}
+
+static void server_main_loop(int remaining_children_to_start)
+{
+    int child_slot;
+    apr_exit_why_e exitwhy;
+    int status;
+    apr_proc_t pid;
+    int i;
+
+    while (!restart_pending && !shutdown_pending) {
+        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
+        
+        if (pid.pid != -1) {
+            if (ap_process_child_status(&pid, exitwhy, status)
+                == APEXIT_CHILDFATAL) {
+                shutdown_pending = 1;
+                child_fatal = 1;
+                return;
+            }
+            /* non-fatal death... note that it's gone in the child table and
+             * clean out the status table. */
+            child_slot = -1;
+            for (i = 0; i < ap_max_daemons_limit; ++i) {
+                if (ap_child_table[i].pid == pid.pid) {
+                    child_slot = i;
+                    break;
+                }
+            }
+            if (child_slot >= 0) {
+                ap_child_table[child_slot].pid = 0;
+                ap_update_child_status_from_indexes(child_slot, i, SERVER_DEAD,
+                                                    (request_rec *) NULL);
+
+                
+                if (remaining_children_to_start
+                    && child_slot < num_daemons) {
+                    /* we're still doing a 1-for-1 replacement of dead
+                     * children with new children
+                     */
+                    make_child(ap_server_conf, child_slot);
+                    --remaining_children_to_start;
+                }
+#if APR_HAS_OTHER_CHILD
+            }
+            else if (apr_proc_other_child_read(&pid, status) == 0) {
+            /* handled */
+#endif
+            }
+            else if (is_graceful) {
+                /* Great, we've probably just lost a slot in the
+                * child table.  Somehow we don't know about this
+                * child.
+                */
+                ap_log_error(APLOG_MARK, APLOG_WARNING, 0, 
+                             ap_server_conf,
+                             "long lost child came home! (pid %ld)", 
+                             (long)pid.pid);
+            }
+            /* Don't perform idle maintenance when a child dies,
+             * only do it when there's a timeout.  Remember only a
+             * finite number of children can die, and it's pretty
+             * pathological for a lot to die suddenly.
+             */
+            continue;
+        }
+        else if (remaining_children_to_start) {
+            /* we hit a 1 second timeout in which none of the previous
+             * generation of children needed to be reaped... so assume
+             * they're all done, and pick up the slack if any is left.
+             */
+            remaining_children_to_start = \
+                startup_children(remaining_children_to_start);
+            /* In any event we really shouldn't do the code below because
+             * few of the servers we just started are in the IDLE state
+             * yet, so we'd mistakenly create an extra server.
+             */
+            continue;
+        }
+
+        perform_child_maintenance();
+    }
+}
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    int remaining_children_to_start;
+    int i;
+    apr_status_t rv;
+    apr_size_t one = 1;
+    ap_listen_rec *lr;
+    apr_socket_t *sock = NULL;
+    int fd;
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    first_server_limit = server_limit;
+    first_thread_limit = thread_limit;
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "WARNING: Attempt to change ServerLimit or ThreadLimit "
+                     "ignored during restart");
+        changed_limit_at_restart = 0;
+    }
+
+    ap_server_conf = s;
+
+    if ((ap_accept_lock_mech == APR_LOCK_SYSVSEM) || 
+        (ap_accept_lock_mech == APR_LOCK_POSIXSEM)) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "Server configured for an accept lock mechanism that "
+                     "cannot be used with perchild.  Falling back to FCNTL.");
+        ap_accept_lock_mech = APR_LOCK_FCNTL;
+    }
+
+    /* Initialize cross-process accept lock */
+    ap_lock_fname = apr_psprintf(_pconf, "%s.%u",
+                                 ap_server_root_relative(_pconf, ap_lock_fname),
+                                 my_pid);
+    rv = SAFE_ACCEPT(apr_proc_mutex_create(&process_accept_mutex,
+                                     ap_lock_fname, ap_accept_lock_mech,
+                                     _pconf));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create cross-process lock");
+        return 1;
+    }
+
+    if (!is_graceful) {
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            return 1;
+        }
+    }
+    /* Initialize the child table */
+    if (!is_graceful) {
+        for (i = 0; i < server_limit; i++) {
+            ap_child_table[i].pid = 0;
+        }
+    }
+
+    /* We need to put the new listeners at the end of the ap_listeners
+     * list.  If we don't, then the pool will be cleared before the
+     * open_logs phase is called for the second time, and ap_listeners
+     * will have only invalid data.  If that happens, then the sockets
+     * that we opened using make_sock() will be lost, and the server
+     * won't start.
+     */
+    for (lr = ap_listeners ; lr->next != NULL; lr = lr->next) {
+        continue;
+    }
+
+    apr_os_file_get(&fd, pipe_of_death_in);
+    apr_os_sock_put(&sock, &fd, pconf);
+    lr->next = apr_palloc(pconf, sizeof(*lr));
+    lr->next->sd = sock;
+    lr->next->active = 1;
+    lr->next->accept_func = check_pipe_of_death;
+    lr->next->next = NULL;
+    lr = lr->next;
+    num_listensocks++;
+
+    set_signals();
+
+    /* If we're doing a graceful_restart then we're going to see a lot
+     * of children exiting immediately when we get into the main loop
+     * below (because we just sent them AP_SIG_GRACEFUL).  This happens 
+     * pretty rapidly... and for each one that exits we'll start a new one 
+     * until we reach at least daemons_min_free.  But we may be permitted to
+     * start more than that, so we'll just keep track of how many we're
+     * supposed to start up without the 1 second penalty between each fork.
+     */
+    remaining_children_to_start = num_daemons;
+    if (!is_graceful) {
+        remaining_children_to_start = \
+            startup_children(remaining_children_to_start);
+    }
+    else {
+        /* give the system some time to recover before kicking into
+         * exponential mode */
+        hold_off_on_exponential_spawning = 10;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                 "%s configured -- resuming normal operations",
+                 ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                 "Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+		"AcceptMutex: %s (default: %s)",
+		apr_proc_mutex_name(process_accept_mutex),
+		apr_proc_mutex_defname());
+#endif
+    restart_pending = shutdown_pending = 0;
+
+    server_main_loop(remaining_children_to_start);
+
+    if (shutdown_pending) {
+        /* Time to gracefully shut down:
+         * Kill child processes, tell them to call child_exit, etc...
+         */
+        if (unixd_killpg(getpgrp(), SIGTERM) < 0) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                         "killpg SIGTERM");
+        }
+        ap_reclaim_child_processes(1);      /* Start with SIGTERM */
+
+        if (!child_fatal) {
+            /* cleanup pid file on normal shutdown */
+            const char *pidfile = NULL;
+            pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+            if (pidfile != NULL && unlink(pidfile) == 0) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0,
+                             ap_server_conf,
+                             "removed PID file %s (pid=%ld)",
+                             pidfile, (long)getpid());
+            }
+    
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
+                         ap_server_conf, "caught SIGTERM, shutting down");
+        }
+        return 1;
+    }
+
+    /* we've been told to restart */
+    apr_signal(SIGHUP, SIG_IGN);
+
+    if (one_process) {
+        /* not worth thinking about */
+        return 1;
+    }
+
+    if (is_graceful) {
+        char char_of_death = '!';
+
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
+                     ap_server_conf, AP_SIG_GRACEFUL_STRING " received.  "
+                     "Doing graceful restart");
+
+        /* This is mostly for debugging... so that we know what is still
+         * gracefully dealing with existing request.
+         */
+    
+        for (i = 0; i < num_daemons; ++i) {
+            if (ap_child_table[i].pid) {
+                ap_child_table[i].status = SERVER_DYING;
+            } 
+        }
+        /* give the children the signal to die */
+        for (i = 0; i < num_daemons;) {
+            if ((rv = apr_file_write(pipe_of_death_out, &char_of_death,
+                                     &one)) != APR_SUCCESS) {
+                if (APR_STATUS_IS_EINTR(rv)) continue;
+                ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
+                             "write pipe_of_death");
+            }
+            i++;
+        }
+    }
+    else {
+        /* Kill 'em all.  Since the child acts the same on the parents SIGTERM 
+         * and a SIGHUP, we may as well use the same signal, because some user
+         * pthreads are stealing signals from us left and right.
+         */
+        if (unixd_killpg(getpgrp(), SIGTERM) < 0) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
+                         "killpg SIGTERM");
+        }
+        ap_reclaim_child_processes(1);      /* Start with SIGTERM */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
+                     ap_server_conf, "SIGHUP received.  Attempting to restart");
+    }
+    return 0;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int perchild_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    apr_status_t rv;
+
+    pconf = p;
+    ap_server_conf = s;
+
+    if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
+                     NULL, "no listening sockets available, shutting down");
+        return DONE;
+    }
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    if ((rv = ap_mpm_pod_open(pconf, &pod))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
+                "Could not open pipe-of-death.");
+        return DONE;
+    }
+
+    if ((rv = apr_file_pipe_create(&pipe_of_death_in, &pipe_of_death_out,
+                                   pconf)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv,
+                     (const server_rec*) ap_server_conf,
+                     "apr_file_pipe_create (pipe_of_death)");
+        exit(1);
+    }
+    if ((rv = apr_file_pipe_timeout_set(pipe_of_death_in, 0)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv,
+                     (const server_rec*) ap_server_conf,
+                     "apr_file_pipe_timeout_set (pipe_of_death)");
+        exit(1);
+    }
+
+    return OK;
+}
+
+static int perchild_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
+{
+    static int restart_num = 0;
+    int no_detach, debug, foreground;
+    ap_directive_t *pdir;
+    int i;
+    int tmp_server_limit = DEFAULT_SERVER_LIMIT;
+    int tmp_thread_limit = DEFAULT_THREAD_LIMIT;
+    apr_status_t rv;
+
+    debug = ap_exists_config_define("DEBUG");
+
+    if (debug) {
+        foreground = one_process = 1;
+        no_detach = 0;
+    }
+    else {
+        one_process = ap_exists_config_define("ONE_PROCESS");
+        no_detach = ap_exists_config_define("NO_DETACH");
+        foreground = ap_exists_config_define("FOREGROUND");
+    }
+
+    /* sigh, want this only the second time around */
+    if (restart_num++ == 1) {
+        is_graceful = 0;
+
+        if (!one_process && !foreground) {
+            rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
+                                           : APR_PROC_DETACH_DAEMONIZE);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                             "apr_proc_detach failed");
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }                  
+        }
+
+        my_pid = getpid();
+    }
+
+    unixd_pre_config(ptemp);
+    ap_listen_pre_config();
+    num_daemons = DEFAULT_NUM_DAEMON;
+    threads_to_start = DEFAULT_START_THREAD;
+    min_spare_threads = DEFAULT_MIN_SPARE_THREAD;
+    max_spare_threads = DEFAULT_MAX_SPARE_THREAD;
+    max_threads = thread_limit;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_lock_fname = DEFAULT_LOCKFILE;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    curr_child_num = 0;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    /* we need to know ServerLimit and ThreadLimit before we start processing
+     * the tree because we need to already have allocated child_info_table
+     */
+    for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next) {
+        if (!strcasecmp(pdir->directive, "ServerLimit")) {
+            if (atoi(pdir->args) > tmp_server_limit) {
+                tmp_server_limit = atoi(pdir->args);
+                if (tmp_server_limit > MAX_SERVER_LIMIT) {
+                    tmp_server_limit = MAX_SERVER_LIMIT;
+                }
+            }
+        }
+        else if (!strcasecmp(pdir->directive, "ThreadLimit")) {
+            if (atoi(pdir->args) > tmp_thread_limit) {
+                tmp_thread_limit = atoi(pdir->args);
+                if (tmp_thread_limit > MAX_THREAD_LIMIT) {
+                    tmp_thread_limit = MAX_THREAD_LIMIT;
+                }
+            }
+        }
+    }
+
+    child_info_table = (child_info_t *)apr_pcalloc(p, tmp_server_limit * sizeof(child_info_t));
+    for (i = 0; i < tmp_server_limit; i++) {
+        child_info_table[i].uid = -1;
+        child_info_table[i].gid = -1;
+        child_info_table[i].input = -1;
+        child_info_table[i].output = -1;
+    }
+
+    return OK;
+}
+
+static int pass_request(request_rec *r)
+{
+    int rv;
+    apr_socket_t *thesock = ap_get_module_config(r->connection->conn_config, &core_module);
+    struct msghdr msg;
+    struct cmsghdr *cmsg;
+    int sfd;
+    struct iovec iov[2];
+    conn_rec *c = r->connection;
+    apr_bucket_brigade *bb = apr_brigade_create(r->pool, c->bucket_alloc);
+    apr_bucket_brigade *sockbb;
+    char request_body[HUGE_STRING_LEN] = "\0";
+    apr_size_t l = sizeof(request_body);
+    perchild_header h;
+    apr_bucket *sockbuck;
+    perchild_server_conf *sconf = (perchild_server_conf *)
+                            ap_get_module_config(r->server->module_config, 
+                                                 &mpm_perchild_module);
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                 "passing request to another child.  Vhost: %s, child %d %d",
+                 apr_table_get(r->headers_in, "Host"), child_num, sconf->output);
+    ap_get_brigade(r->connection->input_filters, bb, AP_MODE_EXHAUSTIVE, APR_NONBLOCK_READ,
+                   0);
+
+    for (sockbuck = APR_BRIGADE_FIRST(bb); sockbuck != APR_BRIGADE_SENTINEL(bb);
+         sockbuck = APR_BUCKET_NEXT(sockbuck)) {
+        if (APR_BUCKET_IS_SOCKET(sockbuck)) {
+            break;
+        }
+    }
+    
+    if (!sockbuck) {
+    }
+    sockbb = apr_brigade_split(bb, sockbuck); 
+
+    if (apr_brigade_flatten(bb, request_body, &l) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                     "Unable to flatten brigade, declining request");
+        return DECLINED;
+    }
+
+    apr_os_sock_get(&sfd, thesock);
+
+    h.p = r->pool;
+    h.headers = apr_pstrcat(h.p, r->the_request, CRLF, "Host: ", r->hostname, 
+                            CRLF, NULL);
+    apr_table_do((int (*) (void *, const char *, const char *))
+                 perchild_header_field, (void *) &h, r->headers_in, NULL); 
+    h.headers = apr_pstrcat(h.p, h.headers, CRLF, NULL);
+
+    iov[0].iov_base = h.headers;
+    iov[0].iov_len = strlen(h.headers) + 1;
+    iov[1].iov_base = request_body;
+    iov[1].iov_len = l + 1;
+
+    msg.msg_name = NULL;
+    msg.msg_namelen = 0;
+    msg.msg_iov = iov;
+    msg.msg_iovlen = 2;
+
+    cmsg = apr_palloc(r->pool, sizeof(*cmsg) + sizeof(sfd));
+    cmsg->cmsg_len = sizeof(*cmsg) + sizeof(sfd);
+    cmsg->cmsg_level = SOL_SOCKET;
+    cmsg->cmsg_type = SCM_RIGHTS;
+
+    memcpy(CMSG_DATA(cmsg), &sfd, sizeof(sfd));
+
+    msg.msg_control = cmsg;
+    msg.msg_controllen = cmsg->cmsg_len;
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                 "Writing message to %d, passing sd:  %d", sconf->output, sfd);
+
+    if ((rv = sendmsg(sconf->output, &msg, 0)) == -1) {
+        apr_pool_destroy(r->pool);
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                 "Writing message failed %d %d", rv, errno);
+        return -1;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                 "Writing message succeeded %d", rv);
+
+    apr_pool_destroy(r->pool);
+    return 1;
+}
+
+static char *make_perchild_socket(const char *fullsockname, int sd[2])
+{
+    socketpair(PF_UNIX, SOCK_STREAM, 0, sd);
+    return NULL;
+}
+
+static int perchild_post_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    int i;
+    server_rec *sr;
+    perchild_server_conf *sconf;
+    int def_sd[2];
+
+    def_sd[0] = -1;
+    def_sd[1] = -1;
+
+    for (sr = s; sr; sr = sr->next) {
+        sconf = (perchild_server_conf *)ap_get_module_config(sr->module_config,
+                                                      &mpm_perchild_module);
+
+        if (sconf->input == -1) {
+            sconf->fullsockname = apr_pstrcat(sr->process->pool, 
+                                             sconf->sockname, ".DEFAULT", NULL);
+            if (def_sd[0] == -1) {
+                if (!make_perchild_socket(sconf->fullsockname, def_sd)) {
+                    /* log error */
+                }
+            }
+            sconf->input = def_sd[0];
+            sconf->output = def_sd[1];
+        }
+    }
+
+    for (i = 0; i < num_daemons; i++) {
+        if (child_info_table[i].uid == -1) {
+            child_info_table[i].input = def_sd[0];
+            child_info_table[i].output = def_sd[1];
+        }
+    }
+
+    thread_socket_table = (int *)apr_pcalloc(p, thread_limit * sizeof(int));
+    for (i = 0; i < thread_limit; i++) {
+        thread_socket_table[i] = AP_PERCHILD_THISCHILD;
+    }
+    ap_child_table = (ap_ctable *)apr_pcalloc(p, server_limit * sizeof(ap_ctable));
+
+    return OK;
+}
+
+static int perchild_post_read(request_rec *r)
+{
+    int thread_num = r->connection->id % thread_limit;
+    perchild_server_conf *sconf = (perchild_server_conf *)
+                            ap_get_module_config(r->server->module_config, 
+                                                 &mpm_perchild_module);
+
+    if (thread_socket_table[thread_num] != AP_PERCHILD_THISCHILD) {
+        apr_socket_t *csd = NULL;
+
+        apr_os_sock_put(&csd, &thread_socket_table[thread_num], 
+                        r->connection->pool);
+        ap_sock_disable_nagle(csd);
+        ap_set_module_config(r->connection->conn_config, &core_module, csd);
+        return OK;
+    }
+    else {
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                     "Determining if request should be passed. "
+                     "Child Num: %d, SD: %d, sd from table: %d, hostname from server: %s", child_num, 
+                     sconf->input, child_info_table[child_num].input, 
+                     r->server->server_hostname);
+        /* sconf is the server config for this vhost, so if our socket
+         * is not the same that was set in the config, then the request
+         * needs to be passed to another child. */
+        if (sconf->input != child_info_table[child_num].input) {
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf, 
+                         "Passing request.");
+            if (pass_request(r) == -1) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, 0,
+                             ap_server_conf, "Could not pass request to proper "
+                             "child, request will not be honored.");
+            }
+            longjmp(jmpbuffer, 1); 
+        }
+        return OK;
+    }
+    return OK;
+}
+
+static void perchild_hooks(apr_pool_t *p)
+{
+    /* The perchild open_logs phase must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+    one_process = 0;
+
+    ap_hook_open_logs(perchild_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+    ap_hook_pre_config(perchild_pre_config, NULL, NULL, APR_HOOK_MIDDLE); 
+    ap_hook_post_config(perchild_post_config, NULL, NULL, APR_HOOK_MIDDLE); 
+
+    /* Both of these must be run absolutely first.  If this request isn't for 
+     * this server then we need to forward it to the proper child.  No sense
+     * tying up this server running more post_read request hooks if it is
+     * just going to be forwarded along.  The process_connection hook allows
+     * perchild to receive the passed request correctly, by automatically
+     * filling in the core_input_filter's ctx pointer.
+     */
+    ap_hook_post_read_request(perchild_post_read, NULL, NULL,
+                              APR_HOOK_REALLY_FIRST);
+    ap_hook_process_connection(perchild_process_connection, NULL, NULL, 
+                               APR_HOOK_REALLY_FIRST);
+}
+
+static const char *set_num_daemons(cmd_parms *cmd, void *dummy,
+                                   const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    num_daemons = atoi(arg);
+    if (num_daemons > server_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: NumServers of %d exceeds ServerLimit value "
+                    "of %d servers,", num_daemons, server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering NumServers to %d.  To increase, please "
+                    "see the", server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " ServerLimit directive.");
+       num_daemons = server_limit;
+    } 
+    else if (num_daemons < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require NumServers > 0, setting to 1");
+        num_daemons = 1;
+    }
+    return NULL;
+}
+
+static const char *set_threads_to_start(cmd_parms *cmd, void *dummy,
+                                        const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    threads_to_start = atoi(arg);
+    if (threads_to_start > thread_limit) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: StartThreads of %d exceeds ThreadLimit value"
+                     " of %d threads,", threads_to_start,
+                     thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " lowering StartThreads to %d. To increase, please"
+                     " see the", thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " ThreadLimit directive.");
+    }
+    else if (threads_to_start < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require StartThreads > 0, setting to 1");
+        threads_to_start = 1;
+    }
+    return NULL;
+}
+
+static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    min_spare_threads = atoi(arg);
+    if (min_spare_threads <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       min_spare_threads = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    max_spare_threads = atoi(arg);
+    if (max_spare_threads >= thread_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set higher than");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "ThreadLimit. Resetting to %d", thread_limit);
+       max_spare_threads = thread_limit;
+    }
+    return NULL;
+}
+
+static const char *set_max_threads(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    max_threads = atoi(arg);
+    if (max_threads > thread_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MaxThreadsPerChild set higher than");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "ThreadLimit. Resetting to %d", thread_limit);
+       max_threads = thread_limit;
+    }
+    return NULL;
+}
+
+static const char *set_child_per_uid(cmd_parms *cmd, void *dummy, const char *u,
+                                     const char *g, const char *num)
+{
+    int i;
+    int max_this_time = atoi(num) + curr_child_num;
+    
+
+    for (i = curr_child_num; i < max_this_time; i++, curr_child_num++) {
+        if (i > num_daemons) {
+            return "Trying to use more child ID's than NumServers.  Increase "
+                   "NumServers in your config file.";
+        }
+    
+        child_info_table[i].uid = ap_uname2id(u);
+        child_info_table[i].gid = ap_gname2id(g); 
+
+#ifndef BIG_SECURITY_HOLE
+        if (child_info_table[i].uid == 0 || child_info_table[i].gid == 0) {
+            return "Assigning root user/group to a child.";
+        }
+#endif
+    }
+    return NULL;
+}
+
+static const char *assign_childuid(cmd_parms *cmd, void *dummy, const char *uid,
+                                   const char *gid)
+{
+    int i;
+    int matching = 0;
+    int u = ap_uname2id(uid);
+    int g = ap_gname2id(gid);
+    const char *errstr;
+    int socks[2];
+    perchild_server_conf *sconf = (perchild_server_conf *)
+                            ap_get_module_config(cmd->server->module_config, 
+                                                 &mpm_perchild_module);
+
+    sconf->fullsockname = apr_pstrcat(cmd->pool, sconf->sockname, ".", uid,
+                                      ":", gid, NULL);
+
+    if ((errstr = make_perchild_socket(sconf->fullsockname, socks))) {
+        return errstr;
+    }
+
+    sconf->input = socks[0]; 
+    sconf->output = socks[1];
+
+    for (i = 0; i < num_daemons; i++) {
+        if (u == child_info_table[i].uid && g == child_info_table[i].gid) {
+            child_info_table[i].input = sconf->input;
+            child_info_table[i].output = sconf->output;
+            matching++;
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, cmd->server, 
+                         "filling out child_info_table; UID: %d, GID: %d, "
+                         "SD: %d %d, OUTPUT: %d %d, Child Num: %d", 
+                         child_info_table[i].uid, child_info_table[i].gid, 
+                         sconf->input, child_info_table[i].input, sconf->output,
+                         child_info_table[i].output, i);
+        }
+    }
+
+    if (!matching) {
+        return "Unable to find process with matching uid/gid.";
+    }
+    return NULL;
+}
+
+static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_server_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_server_limit = atoi(arg);
+    /* you cannot change ServerLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_server_limit &&
+        tmp_server_limit != server_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    server_limit = tmp_server_limit;
+    
+    if (server_limit > MAX_SERVER_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ServerLimit of %d exceeds compile time limit "
+                    "of %d servers,", server_limit, MAX_SERVER_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
+       server_limit = MAX_SERVER_LIMIT;
+    } 
+    else if (server_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ServerLimit > 0, setting to 1");
+	server_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_thread_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_thread_limit = atoi(arg);
+    /* you cannot change ThreadLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_thread_limit &&
+        tmp_thread_limit != thread_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    thread_limit = tmp_thread_limit;
+    
+    if (thread_limit > MAX_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ThreadLimit of %d exceeds compile time limit "
+                    "of %d servers,", thread_limit, MAX_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
+       thread_limit = MAX_THREAD_LIMIT;
+    } 
+    else if (thread_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadLimit > 0, setting to 1");
+	thread_limit = 1;
+    }
+    return NULL;
+}
+
+static const command_rec perchild_cmds[] = {
+UNIX_DAEMON_COMMANDS,
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("NumServers", set_num_daemons, NULL, RSRC_CONF,
+              "Number of children alive at the same time"),
+AP_INIT_TAKE1("StartThreads", set_threads_to_start, NULL, RSRC_CONF,
+              "Number of threads each child creates"),
+AP_INIT_TAKE1("MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,
+              "Minimum number of idle threads per child, to handle "
+              "request spikes"),
+AP_INIT_TAKE1("MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,
+              "Maximum number of idle threads per child"),
+AP_INIT_TAKE1("MaxThreadsPerChild", set_max_threads, NULL, RSRC_CONF,
+              "Maximum number of threads per child"),
+AP_INIT_TAKE3("ChildperUserID", set_child_per_uid, NULL, RSRC_CONF,
+              "Specify a User and Group for a specific child process."),
+AP_INIT_TAKE2("AssignUserID", assign_childuid, NULL, RSRC_CONF,
+              "Tie a virtual host to a specific child process."),
+AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF,
+              "Maximum value of NumServers for this run of Apache"),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+              "Maximum worker threads in a server for this run of Apache"),
+{ NULL }
+};
+
+static void *perchild_create_config(apr_pool_t *p, server_rec *s)
+{
+    perchild_server_conf *c = (perchild_server_conf *)
+                                  apr_pcalloc(p, sizeof(perchild_server_conf));
+
+    c->input = -1;
+    c->output = -1;
+    return c;
+}
+
+module AP_MODULE_DECLARE_DATA mpm_perchild_module = {
+    MPM20_MODULE_STUFF,
+    ap_mpm_rewrite_args,        /* hook to run before apache parses args */
+    NULL,                       /* create per-directory config structure */
+    NULL,                       /* merge per-directory config structures */
+    perchild_create_config,     /* create per-server config structure */
+    NULL,                       /* merge per-server config structures */
+    perchild_cmds,              /* command apr_table_t */
+    perchild_hooks              /* register_hooks */
+};
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/Makefile.in
new file mode 100644
index 00000000..ea0acb69
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libthreadpool.la
+LTLIBRARY_SOURCES = threadpool.c pod.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/README b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/README
new file mode 100644
index 00000000..86e8524c
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/README
@@ -0,0 +1,12 @@
+Threadpool MPM:
+This is an experimental variant of the standard worker MPM.
+Rather than queuing connections like the worker MPM, the threadpool
+MPM queues idle worker threads and hands each accepted connection
+to the next available worker.
+
+The threadpool MPM can't match the performance of the worker MPM
+in benchmark testing.  As of 2.0.39, some of the key load-throtting
+concepts from the threadpool MPM have been incorporated into the
+worker MPM.  The threadpool code is useful primarily as a research
+platform; for general-purpose use, and for any production environments,
+use worker instead.
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/config5.m4 b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/config5.m4
new file mode 100644
index 00000000..667b534a
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/config5.m4
@@ -0,0 +1,6 @@
+dnl ## XXX - Need a more thorough check of the proper flags to use
+
+if test "$MPM_NAME" = "threadpool" ; then
+    AC_CHECK_FUNCS(pthread_kill)
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_SUBDIR_NAME/Makefile)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/mpm.h
new file mode 100644
index 00000000..222040bd
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/mpm.h
@@ -0,0 +1,50 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "scoreboard.h"
+#include "unixd.h"
+
+#ifndef APACHE_MPM_THREADPOOL_H
+#define APACHE_MPM_THREADPOOL_H
+
+#define THREADPOOL_MPM
+
+#define MPM_NAME "ThreadPool"
+
+#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+#define AP_MPM_WANT_WAIT_OR_TIMEOUT
+#define AP_MPM_WANT_PROCESS_CHILD_STATUS
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_LOCKFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+#define AP_MPM_WANT_SIGNAL_SERVER
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+#define AP_MPM_WANT_FATAL_SIGNAL_HANDLER
+#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
+
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+#define MPM_ACCEPT_FUNC unixd_accept
+
+extern int ap_threads_per_child;
+extern int ap_max_daemons_limit;
+extern server_rec *ap_server_conf;
+extern char ap_coredump_dir[MAX_STRING_LEN];
+
+#endif /* APACHE_MPM_THREADPOOL_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/mpm_default.h
new file mode 100644
index 00000000..d5a33989
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/mpm_default.h
@@ -0,0 +1,69 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of servers to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_DAEMON
+#define DEFAULT_START_DAEMON 3
+#endif
+
+/* Maximum number of *free* server processes --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_FREE_DAEMON
+#define DEFAULT_MAX_FREE_DAEMON 10
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_FREE_DAEMON
+#define DEFAULT_MIN_FREE_DAEMON 3
+#endif
+
+#ifndef DEFAULT_THREADS_PER_CHILD
+#define DEFAULT_THREADS_PER_CHILD 25
+#endif
+
+/* File used for accept locking, when we use a file */
+#ifndef DEFAULT_LOCKFILE
+#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/pod.c b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/pod.c
new file mode 100644
index 00000000..2f26130c
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/pod.c
@@ -0,0 +1,108 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "pod.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_open(apr_pool_t *p, ap_pod_t **pod)
+{
+    apr_status_t rv;
+
+    *pod = apr_palloc(p, sizeof(**pod));
+    rv = apr_file_pipe_create(&((*pod)->pod_in), &((*pod)->pod_out), p);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+/*
+    apr_file_pipe_timeout_set((*pod)->pod_in, 0);
+*/
+    (*pod)->p = p;
+    
+    return APR_SUCCESS;
+}
+
+AP_DECLARE(int) ap_mpm_pod_check(ap_pod_t *pod)
+{
+    char c;
+    apr_os_file_t fd;
+    int rc;
+
+    /* we need to surface EINTR so we'll have to grab the
+     * native file descriptor and do the OS read() ourselves
+     */
+    apr_os_file_get(&fd, pod->pod_in);
+    rc = read(fd, &c, 1);
+    if (rc == 1) {
+        switch(c) {
+        case RESTART_CHAR:
+            return AP_RESTART;
+        case GRACEFUL_CHAR:
+            return AP_GRACEFUL;
+        }
+    }
+    return AP_NORESTART;
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_close(ap_pod_t *pod)
+{
+    apr_status_t rv;
+
+    rv = apr_file_close(pod->pod_out);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+
+    rv = apr_file_close(pod->pod_in);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    return rv;
+}
+
+static apr_status_t pod_signal_internal(ap_pod_t *pod, int graceful)
+{
+    apr_status_t rv;
+    char char_of_death = graceful ? GRACEFUL_CHAR : RESTART_CHAR;
+    apr_size_t one = 1;
+
+    do {
+        rv = apr_file_write(pod->pod_out, &char_of_death, &one);
+    } while (APR_STATUS_IS_EINTR(rv));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
+                     "write pipe_of_death");
+    }
+    return rv;
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_signal(ap_pod_t *pod, int graceful)
+{
+    return pod_signal_internal(pod, graceful);
+}
+
+AP_DECLARE(void) ap_mpm_pod_killpg(ap_pod_t *pod, int num, int graceful)
+{
+    int i;
+    apr_status_t rv = APR_SUCCESS;
+
+    for (i = 0; i < num && rv == APR_SUCCESS; i++) {
+        rv = pod_signal_internal(pod, graceful);
+    }
+}
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/pod.h b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/pod.h
new file mode 100644
index 00000000..21651e6f
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/pod.h
@@ -0,0 +1,50 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#include "httpd.h"
+#include "http_config.h"
+#include "http_log.h"
+#include "http_main.h"
+#include "mpm.h"
+#include "mpm_common.h"
+#include "ap_mpm.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+
+#define RESTART_CHAR '$'
+#define GRACEFUL_CHAR '!'
+
+#define AP_RESTART  0
+#define AP_GRACEFUL 1
+
+typedef struct ap_pod_t ap_pod_t;
+
+struct ap_pod_t {
+    apr_file_t *pod_in;
+    apr_file_t *pod_out;
+    apr_pool_t *p;
+};
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_open(apr_pool_t *p, ap_pod_t **pod);
+AP_DECLARE(int) ap_mpm_pod_check(ap_pod_t *pod);
+AP_DECLARE(apr_status_t) ap_mpm_pod_close(ap_pod_t *pod);
+AP_DECLARE(apr_status_t) ap_mpm_pod_signal(ap_pod_t *pod, int graceful);
+AP_DECLARE(void) ap_mpm_pod_killpg(ap_pod_t *pod, int num, int graceful);
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/threadpool.c b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/threadpool.c
new file mode 100644
index 00000000..50de500e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/experimental/threadpool/threadpool.c
@@ -0,0 +1,2229 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* The purpose of this MPM is to fix the design flaws in the threaded
+ * model.  Because of the way that pthreads and mutex locks interact,
+ * it is basically impossible to cleanly gracefully shutdown a child
+ * process if multiple threads are all blocked in accept.  This model
+ * fixes those problems.
+ */
+
+#include "apr.h"
+#include "apr_portable.h"
+#include "apr_strings.h"
+#include "apr_file_io.h"
+#include "apr_thread_proc.h"
+#include "apr_signal.h"
+#include "apr_poll.h"
+#include "apr_thread_mutex.h"
+#include "apr_thread_cond.h"
+#include "apr_proc_mutex.h"
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if APR_HAVE_SYS_WAIT_H
+#include <sys/wait.h> 
+#endif
+#ifdef HAVE_SYS_PROCESSOR_H
+#include <sys/processor.h> /* for bindprocessor() */
+#endif
+
+#if !APR_HAS_THREADS
+#error The Worker MPM requires APR threads, but they are unavailable.
+#endif
+
+#define CORE_PRIVATE 
+ 
+#include "ap_config.h"
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"        /* for read_config */ 
+#include "http_core.h"          /* for get_remote_host */ 
+#include "http_connection.h"
+#include "ap_mpm.h"
+#include "pod.h"
+#include "mpm_common.h"
+#include "ap_listen.h"
+#include "scoreboard.h" 
+#include "mpm_default.h"
+
+#include <signal.h>
+#include <limits.h>             /* for INT_MAX */
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons --- first off,
+ * in case something goes seriously wrong, we want to stop the fork bomb
+ * short of actually crashing the machine we're running on by filling some
+ * kernel table.  Secondly, it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_SERVER_LIMIT
+#define DEFAULT_SERVER_LIMIT 16
+#endif
+
+/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_SERVER_LIMIT
+#define MAX_SERVER_LIMIT 20000
+#endif
+
+/* Limit on the threads per process.  Clients will be locked out if more than
+ * this  * server_limit are needed.
+ *
+ * We keep this for one reason it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_THREAD_LIMIT
+#define DEFAULT_THREAD_LIMIT 64 
+#endif
+
+/* Admin can't tune ThreadLimit beyond MAX_THREAD_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_THREAD_LIMIT
+#define MAX_THREAD_LIMIT 20000
+#endif
+
+/*
+ * Actual definitions of config globals
+ */
+
+int ap_threads_per_child = 0;         /* Worker threads per child */
+static int ap_daemons_to_start = 0;
+static int min_spare_threads = 0;
+static int max_spare_threads = 0;
+static int ap_daemons_limit = 0;
+static int server_limit = DEFAULT_SERVER_LIMIT;
+static int first_server_limit;
+static int thread_limit = DEFAULT_THREAD_LIMIT;
+static int first_thread_limit;
+static int changed_limit_at_restart;
+static int dying = 0;
+static int workers_may_exit = 0;
+static int start_thread_may_exit = 0;
+static int listener_may_exit = 0;
+static int requests_this_child;
+static int num_listensocks = 0;
+static int resource_shortage = 0;
+static int mpm_state = AP_MPMQ_STARTING;
+
+/* The structure used to pass unique initialization info to each thread */
+typedef struct {
+    int pid;
+    int tid;
+    int sd;
+} proc_info;
+
+/* Structure used to pass information to the thread responsible for 
+ * creating the rest of the threads.
+ */
+typedef struct {
+    apr_thread_t **threads;
+    apr_thread_t *listener;
+    int child_num_arg;
+    apr_threadattr_t *threadattr;
+} thread_starter;
+
+#define ID_FROM_CHILD_THREAD(c, t)    ((c * thread_limit) + t)
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts.  We 
+ * use this value to optimize routines that have to scan the entire 
+ * scoreboard.
+ */
+int ap_max_daemons_limit = -1;
+
+static ap_pod_t *pod;
+
+/* *Non*-shared http_main globals... */
+
+server_rec *ap_server_conf;
+
+/* The worker MPM respects a couple of runtime flags that can aid
+ * in debugging. Setting the -DNO_DETACH flag will prevent the root process
+ * from detaching from its controlling terminal. Additionally, setting
+ * the -DONE_PROCESS flag (which implies -DNO_DETACH) will get you the
+ * child_main loop running in the process which originally started up.
+ * This gives you a pretty nice debugging environment.  (You'll get a SIGHUP
+ * early in standalone_main; just continue through.  This is the server
+ * trying to kill off any child processes which it might have lying
+ * around --- Apache doesn't keep track of their pids, it just sends
+ * SIGHUP to the process group, ignoring it in the root process.
+ * Continue through and you'll be fine.).
+ */
+
+static int one_process = 0;
+
+#ifdef DEBUG_SIGSTOP
+int raise_sigstop_flags;
+#endif
+
+static apr_pool_t *pconf;                 /* Pool for config stuff */
+static apr_pool_t *pchild;                /* Pool for httpd child stuff */
+
+static pid_t ap_my_pid; /* Linux getpid() doesn't work except in main 
+                           thread. Use this instead */
+static pid_t parent_pid;
+static apr_os_thread_t *listener_os_thread;
+
+/* Locks for accept serialization */
+static apr_proc_mutex_t *accept_mutex;
+
+#if APR_O_NONBLOCK_INHERITED
+#undef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
+#endif /* APR_O_NONBLOCK_INHERITED */
+
+#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
+#define SAFE_ACCEPT(stmt) (ap_listeners->next ? (stmt) : APR_SUCCESS)
+#else
+#define SAFE_ACCEPT(stmt) (stmt)
+#endif
+
+/* The LISTENER_SIGNAL signal will be sent from the main thread to the 
+ * listener thread to wake it up for graceful termination (what a child 
+ * process from an old generation does when the admin does "apachectl 
+ * graceful").  This signal will be blocked in all threads of a child
+ * process except for the listener thread.
+ */
+#define LISTENER_SIGNAL     SIGHUP
+
+
+/* Possible states of a worker thread. */
+typedef enum {
+    WORKER_IDLE,
+    WORKER_BUSY,
+    WORKER_TERMINATED
+} worker_state_e;
+
+/* Structure used to wake up an idle worker thread
+ */
+typedef struct {
+    apr_pool_t *pool;
+    apr_socket_t *csd;
+    worker_state_e state;
+    apr_thread_cond_t *cond;
+    apr_thread_mutex_t *mutex;
+} worker_wakeup_info;
+
+/* Structure used to hold a stack of idle worker threads 
+ */
+typedef struct {
+    apr_thread_mutex_t *mutex;
+    apr_thread_cond_t *cond;
+    worker_wakeup_info **stack;
+    apr_size_t nelts;
+    apr_size_t nalloc;
+    int terminated;
+} worker_stack;
+
+static worker_stack* worker_stack_create(apr_pool_t *pool, apr_size_t max)
+{
+    apr_status_t rv;
+    worker_stack *stack = (worker_stack *)apr_palloc(pool, sizeof(*stack));
+
+    if ((rv = apr_thread_mutex_create(&stack->mutex, APR_THREAD_MUTEX_DEFAULT,
+                                      pool)) != APR_SUCCESS) {
+        return NULL;
+    }
+    if ((rv = apr_thread_cond_create(&stack->cond, pool)) != APR_SUCCESS) {
+        return NULL;
+    }
+    stack->nelts = 0;
+    stack->nalloc = max;
+    stack->stack =
+        (worker_wakeup_info **)apr_palloc(pool, stack->nalloc *
+                                          sizeof(worker_wakeup_info *));
+    stack->terminated = 0;
+    return stack;
+}
+
+static apr_status_t worker_stack_wait(worker_stack *stack,
+                                      worker_wakeup_info *wakeup)
+{
+    apr_status_t rv;
+
+    wakeup->state = WORKER_IDLE;
+    
+    if ((rv = apr_thread_mutex_lock(stack->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    if (stack->terminated) {
+        if ((rv = apr_thread_mutex_unlock(stack->mutex)) != APR_SUCCESS) {
+            return rv;
+        }
+        return APR_EOF;
+    }
+    if (stack->nelts == stack->nalloc) {
+        if ((rv = apr_thread_mutex_unlock(stack->mutex)) != APR_SUCCESS) {
+            return rv;
+        }
+        return APR_ENOSPC;
+    }
+    stack->stack[stack->nelts] = wakeup;
+    /* Signal a blocking listener thread only if we just made the
+     * stack non-empty. */
+    if (stack->nelts++ == 0) {
+        (void)apr_thread_cond_signal(stack->cond);
+    }
+    if ((rv = apr_thread_mutex_unlock(stack->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+
+    /* At this point we've already added this worker to the stack, now
+     * we just wait until the listener has accept()ed a connection
+     * for us. */
+    if ((rv = apr_thread_mutex_lock(wakeup->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    while (wakeup->state == WORKER_IDLE) {
+        if ((rv = apr_thread_cond_wait(wakeup->cond, wakeup->mutex)) !=
+            APR_SUCCESS) {
+            return rv;
+        }
+    }
+    if ((rv = apr_thread_mutex_unlock(wakeup->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    return APR_SUCCESS;
+}
+
+static apr_status_t worker_stack_pop(worker_stack *stack,
+                                     worker_wakeup_info **worker)
+{
+    apr_status_t rv;
+    if ((rv = apr_thread_mutex_lock(stack->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    AP_DEBUG_ASSERT(stack->nelts >= 0);
+    while ((stack->nelts == 0) && (!stack->terminated)) {
+        rv = apr_thread_cond_wait(stack->cond, stack->mutex);
+        if (rv != APR_SUCCESS) {
+            apr_status_t rv2;
+            rv2 = apr_thread_mutex_unlock(stack->mutex);
+            if (rv2 != APR_SUCCESS) {
+                return rv2;
+            }
+            return rv;
+        }
+    }
+    if (stack->terminated) {
+        if ((rv = apr_thread_mutex_unlock(stack->mutex)) != APR_SUCCESS) {
+            return rv;
+        }
+        return APR_EOF;
+    }
+    *worker = stack->stack[--stack->nelts];
+    if ((rv = apr_thread_mutex_unlock(stack->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    return APR_SUCCESS;
+}
+
+static apr_status_t worker_stack_terminate(worker_stack *stack)
+{
+    apr_status_t rv;
+    worker_wakeup_info *worker;
+
+    if ((rv = apr_thread_mutex_lock(stack->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    stack->terminated = 1;
+    /* Wake up the listener thread. Although there will never be
+     * more than one thread blocking on this condition, broadcast
+     * just in case. */
+    apr_thread_cond_broadcast(stack->cond);
+    while (stack->nelts) {
+        worker = stack->stack[--stack->nelts];
+        apr_thread_mutex_lock(worker->mutex);
+        worker->csd = 0;
+        worker->state = WORKER_TERMINATED;
+        apr_thread_cond_signal(worker->cond);
+        apr_thread_mutex_unlock(worker->mutex);
+    }
+    if ((rv = apr_thread_mutex_unlock(stack->mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    return APR_SUCCESS;
+}
+
+static worker_stack *idle_worker_stack;
+
+static void wakeup_listener(void)
+{
+    apr_status_t rv;
+
+    listener_may_exit = 1;
+    if (!idle_worker_stack) {
+        return;
+    }
+    if ((rv = apr_thread_mutex_lock(idle_worker_stack->mutex)) != APR_SUCCESS) {
+        return;
+    }
+    if ((rv = apr_thread_cond_signal(idle_worker_stack->cond)) !=
+        APR_SUCCESS) {
+        return;
+    }
+    if ((rv = apr_thread_mutex_unlock(idle_worker_stack->mutex)) != APR_SUCCESS) {
+        return;
+    }
+    if (!listener_os_thread) {
+        /* XXX there is an obscure path that this doesn't handle perfectly:
+         *     right after listener thread is created but before 
+         *     listener_os_thread is set, the first worker thread hits an
+         *     error and starts graceful termination
+         */
+        return;
+    }
+    /*
+     * we should just be able to "kill(ap_my_pid, LISTENER_SIGNAL)" on all
+     * platforms and wake up the listener thread since it is the only thread 
+     * with SIGHUP unblocked, but that doesn't work on Linux
+     */
+#ifdef HAVE_PTHREAD_KILL
+    pthread_kill(*listener_os_thread, LISTENER_SIGNAL);
+#else
+    kill(ap_my_pid, LISTENER_SIGNAL);
+#endif
+}
+
+#define ST_INIT              0
+#define ST_GRACEFUL          1
+#define ST_UNGRACEFUL        2
+
+static int terminate_mode = ST_INIT;
+
+static void signal_threads(int mode)
+{
+    if (terminate_mode == mode) {
+        return;
+    }
+    terminate_mode = mode;
+    mpm_state = AP_MPMQ_STOPPING;
+
+    /* in case we weren't called from the listener thread, wake up the
+     * listener thread
+     */
+    wakeup_listener();
+
+    /* for ungraceful termination, let the workers exit now;
+     * for graceful termination, the listener thread will notify the
+     * workers to exit once it has stopped accepting new connections
+     */
+    if (mode == ST_UNGRACEFUL) {
+        workers_may_exit = 1;
+        worker_stack_terminate(idle_worker_stack);
+    }
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_max_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_STATIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = server_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = min_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = max_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = ap_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+/* a clean exit from a child with proper cleanup */ 
+static void clean_child_exit(int code) __attribute__ ((noreturn));
+static void clean_child_exit(int code)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (pchild) {
+        apr_pool_destroy(pchild);
+    }
+    exit(code);
+}
+
+static void just_die(int sig)
+{
+    clean_child_exit(0);
+}
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+static volatile int child_fatal;
+ap_generation_t volatile ap_my_generation;
+
+/*
+ * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
+ * functions to initiate shutdown or restart without relying on signals. 
+ * Previously this was initiated in sig_term() and restart() signal handlers, 
+ * but we want to be able to start a shutdown/restart from other sources --
+ * e.g. on Win32, from the service manager. Now the service manager can
+ * call ap_start_shutdown() or ap_start_restart() as appropiate.  Note that
+ * these functions can also be called by the child processes, since global
+ * variables are no longer used to pass on the required action to the parent.
+ *
+ * These should only be called from the parent process itself, since the
+ * parent process will use the shutdown_pending and restart_pending variables
+ * to determine whether to shutdown or restart. The child process should
+ * call signal_parent() directly to tell the parent to die -- this will
+ * cause neither of those variable to be set, which the parent will
+ * assume means something serious is wrong (which it will be, for the
+ * child to force an exit) and so do an exit anyway.
+ */
+
+static void ap_start_shutdown(void)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (shutdown_pending == 1) {
+        /* Um, is this _probably_ not an error, if the user has
+         * tried to do a shutdown twice quickly, so we won't
+         * worry about reporting it.
+         */
+        return;
+    }
+    shutdown_pending = 1;
+}
+
+/* do a graceful restart if graceful == 1 */
+static void ap_start_restart(int graceful)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (restart_pending == 1) {
+        /* Probably not an error - don't bother reporting it */
+        return;
+    }
+    restart_pending = 1;
+    is_graceful = graceful;
+}
+
+static void sig_term(int sig)
+{
+    ap_start_shutdown();
+}
+
+static void restart(int sig)
+{
+    ap_start_restart(sig == AP_SIG_GRACEFUL);
+}
+
+static void set_signals(void)
+{
+#ifndef NO_USE_SIGACTION
+    struct sigaction sa;
+#endif
+
+    if (!one_process) {
+        ap_fatal_signal_setup(ap_server_conf, pconf);
+    }
+
+#ifndef NO_USE_SIGACTION
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+
+    sa.sa_handler = sig_term;
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGTERM)");
+#ifdef SIGINT
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGINT)");
+#endif
+#ifdef SIGXCPU
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXCPU, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGXCPU)");
+#endif
+#ifdef SIGXFSZ
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXFSZ, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGXFSZ)");
+#endif
+#ifdef SIGPIPE
+    sa.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGPIPE)");
+#endif
+
+    /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy 
+     * processing one */
+    sigaddset(&sa.sa_mask, SIGHUP);
+    sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
+    sa.sa_handler = restart;
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGHUP)");
+    if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(" AP_SIG_GRACEFUL_STRING ")");
+#else
+    if (!one_process) {
+#ifdef SIGXCPU
+        apr_signal(SIGXCPU, SIG_DFL);
+#endif /* SIGXCPU */
+#ifdef SIGXFSZ
+        apr_signal(SIGXFSZ, SIG_DFL);
+#endif /* SIGXFSZ */
+    }
+
+    apr_signal(SIGTERM, sig_term);
+#ifdef SIGHUP
+    apr_signal(SIGHUP, restart);
+#endif /* SIGHUP */
+#ifdef AP_SIG_GRACEFUL
+    apr_signal(AP_SIG_GRACEFUL, restart);
+#endif /* AP_SIG_GRACEFUL */
+#ifdef SIGPIPE
+    apr_signal(SIGPIPE, SIG_IGN);
+#endif /* SIGPIPE */
+
+#endif
+}
+
+/*****************************************************************
+ * Here follows a long bunch of generic server bookkeeping stuff...
+ */
+
+int ap_graceful_stop_signalled(void)
+    /* XXX this is really a bad confusing obsolete name
+     * maybe it should be ap_mpm_process_exiting?
+     */
+{
+    /* note: for a graceful termination, listener_may_exit will be set before
+     *       workers_may_exit, so check listener_may_exit
+     */
+    return listener_may_exit;
+}
+
+/*****************************************************************
+ * Child process main loop.
+ */
+
+static void process_socket(apr_pool_t *p, apr_socket_t *sock, int my_child_num,
+                           int my_thread_num, apr_bucket_alloc_t *bucket_alloc)
+{
+    conn_rec *current_conn;
+    long conn_id = ID_FROM_CHILD_THREAD(my_child_num, my_thread_num);
+    int csd;
+    ap_sb_handle_t *sbh;
+
+    ap_create_sb_handle(&sbh, p, my_child_num, my_thread_num);
+    apr_os_sock_get(&csd, sock);
+
+    current_conn = ap_run_create_connection(p, ap_server_conf, sock,
+                                            conn_id, sbh, bucket_alloc);
+    if (current_conn) {
+        ap_process_connection(current_conn, sock);
+        ap_lingering_close(current_conn);
+    }
+}
+
+/* requests_this_child has gone to zero or below.  See if the admin coded
+   "MaxRequestsPerChild 0", and keep going in that case.  Doing it this way
+   simplifies the hot path in worker_thread */
+static void check_infinite_requests(void)
+{
+    if (ap_max_requests_per_child) {
+        signal_threads(ST_GRACEFUL);
+    }
+    else {
+        /* wow! if you're executing this code, you may have set a record.
+         * either this child process has served over 2 billion requests, or
+         * you're running a threaded 2.0 on a 16 bit machine.  
+         *
+         * I'll buy pizza and beers at Apachecon for the first person to do
+         * the former without cheating (dorking with INT_MAX, or running with
+         * uncommitted performance patches, for example).    
+         *
+         * for the latter case, you probably deserve a beer too.   Greg Ames
+         */
+            
+        requests_this_child = INT_MAX;      /* keep going */ 
+    }
+}
+
+static void unblock_signal(int sig)
+{
+    sigset_t sig_mask;
+
+    sigemptyset(&sig_mask);
+    sigaddset(&sig_mask, sig);
+#if defined(SIGPROCMASK_SETS_THREAD_MASK)
+    sigprocmask(SIG_UNBLOCK, &sig_mask, NULL);
+#else
+    pthread_sigmask(SIG_UNBLOCK, &sig_mask, NULL);
+#endif
+}
+
+static void dummy_signal_handler(int sig)
+{
+    /* XXX If specifying SIG_IGN is guaranteed to unblock a syscall,
+     *     then we don't need this goofy function.
+     */
+}
+
+static void *listener_thread(apr_thread_t *thd, void * dummy)
+{
+    proc_info * ti = dummy;
+    int process_slot = ti->pid;
+    apr_pool_t *tpool = apr_thread_pool_get(thd);
+    void *csd = NULL;
+    apr_pool_t *ptrans;                /* Pool for per-transaction stuff */
+    int n;
+    apr_pollfd_t *pollset;
+    apr_status_t rv;
+    ap_listen_rec *lr, *last_lr = ap_listeners;
+    worker_wakeup_info *worker = NULL;
+
+    free(ti);
+
+    apr_poll_setup(&pollset, num_listensocks, tpool);
+    for(lr = ap_listeners ; lr != NULL ; lr = lr->next)
+        apr_poll_socket_add(pollset, lr->sd, APR_POLLIN);
+
+    /* Unblock the signal used to wake this thread up, and set a handler for
+     * it.
+     */
+    unblock_signal(LISTENER_SIGNAL);
+    apr_signal(LISTENER_SIGNAL, dummy_signal_handler);
+
+    /* TODO: Switch to a system where threads reuse the results from earlier
+       poll calls - manoj */
+    while (1) {
+        /* TODO: requests_this_child should be synchronized - aaron */
+        if (requests_this_child <= 0) {
+            check_infinite_requests();
+        }
+        if (listener_may_exit) break;
+
+        if (worker == NULL) {
+            rv = worker_stack_pop(idle_worker_stack, &worker);
+            if (APR_STATUS_IS_EOF(rv)) {
+                break;
+            }
+            else if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "worker_stack_pop failed");
+                break;
+            }
+            ptrans = worker->pool;
+        }
+        AP_DEBUG_ASSERT(worker->state == WORKER_IDLE);
+
+        if ((rv = SAFE_ACCEPT(apr_proc_mutex_lock(accept_mutex)))
+            != APR_SUCCESS) {
+            int level = APLOG_EMERG;
+
+            if (listener_may_exit) {
+                break;
+            }
+            if (ap_scoreboard_image->parent[process_slot].generation != 
+                ap_scoreboard_image->global->running_generation) {
+                level = APLOG_DEBUG; /* common to get these at restart time */
+            }
+            ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                         "apr_proc_mutex_lock failed. Attempting to shutdown "
+                         "process gracefully.");
+            signal_threads(ST_GRACEFUL);
+            break;                    /* skip the lock release */
+        }
+
+        if (!APR_O_NONBLOCK_INHERITED && !ap_listeners->next) {
+            /* Only one listener, so skip the poll */
+            lr = ap_listeners;
+        }
+        else {
+            while (!listener_may_exit) {
+                apr_status_t ret;
+                apr_int16_t event;
+
+                ret = apr_poll(pollset, num_listensocks, &n, -1);
+                if (ret != APR_SUCCESS) {
+                    if (APR_STATUS_IS_EINTR(ret)) {
+                        continue;
+                    }
+
+                    /* apr_poll() will only return errors in catastrophic
+                     * circumstances. Let's try exiting gracefully, for now. */
+                    ap_log_error(APLOG_MARK, APLOG_ERR, ret, (const server_rec *)
+                                 ap_server_conf, "apr_poll: (listen)");
+                    signal_threads(ST_GRACEFUL);
+                }
+
+                if (listener_may_exit) break;
+
+                /* find a listener */
+                lr = last_lr;
+                do {
+                    lr = lr->next;
+                    if (lr == NULL) {
+                        lr = ap_listeners;
+                    }
+                    /* XXX: Should we check for POLLERR? */
+                    apr_poll_revents_get(&event, lr->sd, pollset);
+                    if (event & APR_POLLIN) {
+                        last_lr = lr;
+                        goto got_fd;
+                    }
+                } while (lr != last_lr);
+            }
+        }
+    got_fd:
+        if (!listener_may_exit) {
+            rv = lr->accept_func(&csd, lr, ptrans);
+            /* later we trash rv and rely on csd to indicate success/failure */
+            AP_DEBUG_ASSERT(rv == APR_SUCCESS || !csd);
+
+            if (rv == APR_EGENERAL) {
+                /* E[NM]FILE, ENOMEM, etc */
+                resource_shortage = 1;
+                signal_threads(ST_GRACEFUL);
+            }
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(accept_mutex)))
+                != APR_SUCCESS) {
+                int level = APLOG_EMERG;
+
+                if (listener_may_exit) {
+                    break;
+                }
+                if (ap_scoreboard_image->parent[process_slot].generation != 
+                    ap_scoreboard_image->global->running_generation) {
+                    level = APLOG_DEBUG; /* common to get these at restart time */
+                }
+                ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+            }
+            if (csd != NULL) {
+                /* Wake up the sleeping worker. */
+                apr_thread_mutex_lock(worker->mutex);
+                worker->csd = (apr_socket_t *)csd;
+                worker->state = WORKER_BUSY;
+                /* Posix allows us to signal this condition without
+                 * owning the associated mutex, but in that case it can
+                 * not guarantee predictable scheduling. See
+                 * _UNIX Network Programming: Interprocess Communication_
+                 * by W. Richard Stevens, Vol 2, 2nd Ed, pp. 170-171. */
+                apr_thread_cond_signal(worker->cond);
+                apr_thread_mutex_unlock(worker->mutex);
+                worker = NULL;
+            }
+        }
+        else {
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(accept_mutex)))
+                != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+            }
+            break;
+        }
+    }
+
+    workers_may_exit = 1;
+    if (worker) {
+        apr_thread_mutex_lock(worker->mutex);
+        worker->state = WORKER_TERMINATED;
+        /* Posix allows us to signal this condition without
+         * owning the associated mutex, but in that case it can
+         * not guarantee predictable scheduling. See
+         * _UNIX Network Programming: Interprocess Communication_
+         * by W. Richard Stevens, Vol 2, 2nd Ed, pp. 170-171. */
+        apr_thread_cond_signal(worker->cond);
+        apr_thread_mutex_unlock(worker->mutex);
+    }
+    worker_stack_terminate(idle_worker_stack);
+    dying = 1;
+    ap_scoreboard_image->parent[process_slot].quiescing = 1;
+
+    /* wake up the main thread */
+    kill(ap_my_pid, SIGTERM);
+
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+/* XXX For ungraceful termination/restart, we definitely don't want to
+ *     wait for active connections to finish but we may want to wait
+ *     for idle workers to get out of the queue code and release mutexes,
+ *     since those mutexes are cleaned up pretty soon and some systems
+ *     may not react favorably (i.e., segfault) if operations are attempted
+ *     on cleaned-up mutexes.
+ */
+static void * APR_THREAD_FUNC worker_thread(apr_thread_t *thd, void * dummy)
+{
+    proc_info * ti = dummy;
+    int process_slot = ti->pid;
+    int thread_slot = ti->tid;
+    apr_bucket_alloc_t *bucket_alloc;
+    apr_pool_t *tpool = apr_thread_pool_get(thd);
+    apr_pool_t *ptrans;                /* Pool for per-transaction stuff */
+    apr_allocator_t *allocator;
+    apr_status_t rv;
+    worker_wakeup_info *wakeup;
+
+    free(ti);
+
+    ap_update_child_status_from_indexes(process_slot, thread_slot, SERVER_STARTING, NULL);
+
+    apr_allocator_create(&allocator);
+    apr_allocator_max_free_set(allocator, ap_max_mem_free);
+    /* XXX: why is ptrans's parent not tpool? --jcw 08/2003 */
+    apr_pool_create_ex(&ptrans, NULL, NULL, allocator);
+    apr_allocator_owner_set(allocator, ptrans);
+    bucket_alloc = apr_bucket_alloc_create_ex(allocator);
+
+    wakeup = (worker_wakeup_info *)apr_palloc(tpool, sizeof(*wakeup));
+    wakeup->pool = ptrans;
+    if ((rv = apr_thread_cond_create(&wakeup->cond, tpool)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "apr_thread_cond_create failed. Attempting to shutdown "
+                     "process gracefully.");
+        signal_threads(ST_GRACEFUL);
+        apr_thread_exit(thd, rv);
+    }
+    if ((rv = apr_thread_mutex_create(&wakeup->mutex, APR_THREAD_MUTEX_DEFAULT,
+                                      tpool)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "apr_thread_mutex_create failed. Attempting to shutdown "
+                     "process gracefully.");
+        signal_threads(ST_GRACEFUL);
+        apr_thread_exit(thd, rv);
+    }
+
+    while (!workers_may_exit) {
+        ap_update_child_status_from_indexes(process_slot, thread_slot, SERVER_READY, NULL);
+        rv = worker_stack_wait(idle_worker_stack, wakeup);
+        if (APR_STATUS_IS_EOF(rv)) {
+            break; /* The queue has been terminated. */
+        }
+        else if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                         "worker_stack_wait failed");
+            break; /* Treat all other errors as fatal. */
+        }
+        else if (wakeup->state == WORKER_TERMINATED) {
+            break; /* They told us to quit. */
+        }
+        AP_DEBUG_ASSERT(wakeup->state != WORKER_IDLE);
+        process_socket(ptrans, wakeup->csd,
+                       process_slot, thread_slot, bucket_alloc);
+        requests_this_child--; /* FIXME: should be synchronized - aaron */
+        apr_pool_clear(ptrans);
+    }
+
+    ap_update_child_status_from_indexes(process_slot, thread_slot,
+        (dying) ? SERVER_DEAD : SERVER_GRACEFUL, (request_rec *) NULL);
+
+    apr_bucket_alloc_destroy(bucket_alloc);
+
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+static int check_signal(int signum)
+{
+    switch (signum) {
+    case SIGTERM:
+    case SIGINT:
+        return 1;
+    }
+    return 0;
+}
+
+static void create_listener_thread(thread_starter *ts)
+{
+    int my_child_num = ts->child_num_arg;
+    apr_threadattr_t *thread_attr = ts->threadattr;
+    proc_info *my_info;
+    apr_status_t rv;
+
+    my_info = (proc_info *)malloc(sizeof(proc_info));
+    my_info->pid = my_child_num;
+    my_info->tid = -1; /* listener thread doesn't have a thread slot */
+    my_info->sd = 0;
+    rv = apr_thread_create(&ts->listener, thread_attr, listener_thread,
+                           my_info, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "apr_thread_create: unable to create listener thread");
+        /* In case system resources are maxxed out, we don't want
+         * Apache running away with the CPU trying to fork over and
+         * over and over again if we exit.
+         * XXX Jeff doesn't see how Apache is going to try to fork again since
+         * the exit code is APEXIT_CHILDFATAL
+         */
+        apr_sleep(10 * APR_USEC_PER_SEC);
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+    apr_os_thread_get(&listener_os_thread, ts->listener);
+}
+
+/* XXX under some circumstances not understood, children can get stuck
+ *     in start_threads forever trying to take over slots which will
+ *     never be cleaned up; for now there is an APLOG_DEBUG message issued
+ *     every so often when this condition occurs
+ */
+static void * APR_THREAD_FUNC start_threads(apr_thread_t *thd, void *dummy)
+{
+    thread_starter *ts = dummy;
+    apr_thread_t **threads = ts->threads;
+    apr_threadattr_t *thread_attr = ts->threadattr;
+    int child_num_arg = ts->child_num_arg;
+    int my_child_num = child_num_arg;
+    proc_info *my_info;
+    apr_status_t rv;
+    int i;
+    int threads_created = 0;
+    int loops;
+    int prev_threads_created;
+
+    idle_worker_stack = worker_stack_create(pchild, ap_threads_per_child);
+    if (idle_worker_stack == NULL) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, 0, ap_server_conf,
+                     "worker_stack_create() failed");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    loops = prev_threads_created = 0;
+    while (1) {
+        /* ap_threads_per_child does not include the listener thread */
+        for (i = 0; i < ap_threads_per_child; i++) {
+            int status = ap_scoreboard_image->servers[child_num_arg][i].status;
+
+            if (status != SERVER_GRACEFUL && status != SERVER_DEAD) {
+                continue;
+            }
+
+            my_info = (proc_info *)malloc(sizeof(proc_info));
+            if (my_info == NULL) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+                             "malloc: out of memory");
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+            my_info->pid = my_child_num;
+            my_info->tid = i;
+            my_info->sd = 0;
+        
+            /* We are creating threads right now */
+            ap_update_child_status_from_indexes(my_child_num, i,
+                                                SERVER_STARTING, NULL);
+            /* We let each thread update its own scoreboard entry.  This is
+             * done because it lets us deal with tid better.
+             */
+            rv = apr_thread_create(&threads[i], thread_attr, 
+                                   worker_thread, my_info, pchild);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                    "apr_thread_create: unable to create worker thread");
+                /* In case system resources are maxxed out, we don't want
+                   Apache running away with the CPU trying to fork over and
+                   over and over again if we exit. */
+                apr_sleep(10 * APR_USEC_PER_SEC);
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+            threads_created++;
+            if (threads_created == 1) {
+                /* now that we have a worker thread, it makes sense to create
+                 * a listener thread (we don't want a listener without a worker!)
+                 */
+                create_listener_thread(ts);
+            }
+        }
+        if (start_thread_may_exit || threads_created == ap_threads_per_child) {
+            break;
+        }
+        /* wait for previous generation to clean up an entry */
+        apr_sleep(1 * APR_USEC_PER_SEC);
+        ++loops;
+        if (loops % 120 == 0) { /* every couple of minutes */
+            if (prev_threads_created == threads_created) {
+                ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                             "child %" APR_PID_T_FMT " isn't taking over "
+                             "slots very quickly (%d of %d)",
+                             ap_my_pid, threads_created, ap_threads_per_child);
+            }
+            prev_threads_created = threads_created;
+        }
+    }
+    
+    /* What state should this child_main process be listed as in the 
+     * scoreboard...?
+     *  ap_update_child_status_from_indexes(my_child_num, i, SERVER_STARTING, 
+     *                                      (request_rec *) NULL);
+     * 
+     *  This state should be listed separately in the scoreboard, in some kind
+     *  of process_status, not mixed in with the worker threads' status.   
+     *  "life_status" is almost right, but it's in the worker's structure, and 
+     *  the name could be clearer.   gla
+     */
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+static void join_workers(apr_thread_t *listener, apr_thread_t **threads)
+{
+    int i;
+    apr_status_t rv, thread_rv;
+
+    if (listener) {
+        int iter;
+
+        /* deal with a rare timing window which affects waking up the
+         * listener thread...  if the signal sent to the listener thread
+         * is delivered between the time it verifies that the
+         * listener_may_exit flag is clear and the time it enters a
+         * blocking syscall, the signal didn't do any good...  work around
+         * that by sleeping briefly and sending it again
+         */
+
+        iter = 0;
+        while (iter < 10 && 
+#ifdef HAVE_PTHREAD_KILL
+               pthread_kill(*listener_os_thread, 0)
+#else
+               kill(ap_my_pid, 0)
+#endif
+               == 0) {
+            /* listener not dead yet */
+            apr_sleep(APR_USEC_PER_SEC / 2);
+            wakeup_listener();
+            ++iter;
+        }
+        if (iter >= 10) {
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                         "the listener thread didn't exit");
+        }
+        else {
+            rv = apr_thread_join(&thread_rv, listener);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "apr_thread_join: unable to join listener thread");
+            }
+        }
+    }
+    
+    for (i = 0; i < ap_threads_per_child; i++) {
+        if (threads[i]) { /* if we ever created this thread */
+            rv = apr_thread_join(&thread_rv, threads[i]);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "apr_thread_join: unable to join worker "
+                             "thread %d",
+                             i);
+            }
+        }
+    }
+}
+
+static void join_start_thread(apr_thread_t *start_thread_id)
+{
+    apr_status_t rv, thread_rv;
+
+    start_thread_may_exit = 1; /* tell it to give up in case it is still 
+                                * trying to take over slots from a 
+                                * previous generation
+                                */
+    rv = apr_thread_join(&thread_rv, start_thread_id);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "apr_thread_join: unable to join the start "
+                     "thread");
+    }
+}
+
+static void child_main(int child_num_arg)
+{
+    apr_thread_t **threads;
+    apr_status_t rv;
+    thread_starter *ts;
+    apr_threadattr_t *thread_attr;
+    apr_thread_t *start_thread_id;
+
+    mpm_state = AP_MPMQ_STARTING; /* for benefit of any hooks that run as this
+                                   * child initializes
+                                   */
+    ap_my_pid = getpid();
+    ap_fatal_signal_child_setup(ap_server_conf);
+    apr_pool_create(&pchild, pconf);
+
+    /*stuff to do before we switch id's, so we have permissions.*/
+    ap_reopen_scoreboard(pchild, NULL, 0);
+
+    rv = SAFE_ACCEPT(apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname,
+                                               pchild));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize cross-process lock in child");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (unixd_setup_child()) {
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_run_child_init(pchild, ap_server_conf);
+
+    /* done with init critical section */
+
+    /* Just use the standard apr_setup_signal_thread to block all signals
+     * from being received.  The child processes no longer use signals for
+     * any communication with the parent process.
+     */
+    rv = apr_setup_signal_thread();
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize signal thread");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (ap_max_requests_per_child) {
+        requests_this_child = ap_max_requests_per_child;
+    }
+    else {
+        /* coding a value of zero means infinity */
+        requests_this_child = INT_MAX;
+    }
+    
+    /* Setup worker threads */
+
+    /* clear the storage; we may not create all our threads immediately, 
+     * and we want a 0 entry to indicate a thread which was not created
+     */
+    threads = (apr_thread_t **)calloc(1, 
+                                sizeof(apr_thread_t *) * ap_threads_per_child);
+    if (threads == NULL) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+                     "malloc: out of memory");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ts = (thread_starter *)apr_palloc(pchild, sizeof(*ts));
+
+    apr_threadattr_create(&thread_attr, pchild);
+    /* 0 means PTHREAD_CREATE_JOINABLE */
+    apr_threadattr_detach_set(thread_attr, 0);
+
+    ts->threads = threads;
+    ts->listener = NULL;
+    ts->child_num_arg = child_num_arg;
+    ts->threadattr = thread_attr;
+
+    rv = apr_thread_create(&start_thread_id, thread_attr, start_threads,
+                           ts, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "apr_thread_create: unable to create worker thread");
+        /* In case system resources are maxxed out, we don't want
+           Apache running away with the CPU trying to fork over and
+           over and over again if we exit. */
+        apr_sleep(10 * APR_USEC_PER_SEC);
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    mpm_state = AP_MPMQ_RUNNING;
+    
+    /* If we are only running in one_process mode, we will want to
+     * still handle signals. */
+    if (one_process) {
+        /* Block until we get a terminating signal. */
+        apr_signal_thread(check_signal);
+        /* make sure the start thread has finished; signal_threads() 
+         * and join_workers() depend on that
+         */
+        /* XXX join_start_thread() won't be awakened if one of our
+         *     threads encounters a critical error and attempts to
+         *     shutdown this child
+         */
+        join_start_thread(start_thread_id);
+        signal_threads(ST_UNGRACEFUL); /* helps us terminate a little more
+                           * quickly than the dispatch of the signal thread
+                           * beats the Pipe of Death and the browsers
+                           */
+        /* A terminating signal was received. Now join each of the
+         * workers to clean them up.
+         *   If the worker already exited, then the join frees
+         *   their resources and returns.
+         *   If the worker hasn't exited, then this blocks until
+         *   they have (then cleans up).
+         */
+        join_workers(ts->listener, threads);
+    }
+    else { /* !one_process */
+        /* remove SIGTERM from the set of blocked signals...  if one of
+         * the other threads in the process needs to take us down
+         * (e.g., for MaxRequestsPerChild) it will send us SIGTERM
+         */
+        unblock_signal(SIGTERM);
+        apr_signal(SIGTERM, dummy_signal_handler);
+        /* Watch for any messages from the parent over the POD */
+        while (1) {
+            rv = ap_mpm_pod_check(pod);
+            if (rv == AP_NORESTART) {
+                /* see if termination was triggered while we slept */
+                switch(terminate_mode) {
+                case ST_GRACEFUL:
+                    rv = AP_GRACEFUL;
+                    break;
+                case ST_UNGRACEFUL:
+                    rv = AP_RESTART;
+                    break;
+                }
+            }
+            if (rv == AP_GRACEFUL || rv == AP_RESTART) {
+                /* make sure the start thread has finished; 
+                 * signal_threads() and join_workers depend on that
+                 */
+                join_start_thread(start_thread_id);
+                signal_threads(rv == AP_GRACEFUL ? ST_GRACEFUL : ST_UNGRACEFUL);
+                break;
+            }
+        }
+
+        if (rv == AP_GRACEFUL) {
+            /* A terminating signal was received. Now join each of the
+             * workers to clean them up.
+             *   If the worker already exited, then the join frees
+             *   their resources and returns.
+             *   If the worker hasn't exited, then this blocks until
+             *   they have (then cleans up).
+             */
+            join_workers(ts->listener, threads);
+        }
+    }
+
+    free(threads);
+
+    clean_child_exit(resource_shortage ? APEXIT_CHILDSICK : 0);
+}
+
+static int make_child(server_rec *s, int slot) 
+{
+    int pid;
+
+    if (slot + 1 > ap_max_daemons_limit) {
+        ap_max_daemons_limit = slot + 1;
+    }
+
+    if (one_process) {
+        set_signals();
+        ap_scoreboard_image->parent[slot].pid = getpid();
+        child_main(slot);
+    }
+
+    if ((pid = fork()) == -1) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, 
+                     "fork: Unable to fork new process");
+
+        /* fork didn't succeed. Fix the scoreboard or else
+         * it will say SERVER_STARTING forever and ever
+         */
+        ap_update_child_status_from_indexes(slot, 0, SERVER_DEAD, NULL);
+
+        /* In case system resources are maxxed out, we don't want
+           Apache running away with the CPU trying to fork over and
+           over and over again. */
+        apr_sleep(10 * APR_USEC_PER_SEC);
+
+        return -1;
+    }
+
+    if (!pid) {
+#ifdef HAVE_BINDPROCESSOR
+        /* By default, AIX binds to a single processor.  This bit unbinds
+         * children which will then bind to another CPU.
+         */
+        int status = bindprocessor(BINDPROCESS, (int)getpid(),
+                               PROCESSOR_CLASS_ANY);
+        if (status != OK)
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, 
+                         ap_server_conf,
+                         "processor unbind failed %d", status);
+#endif
+        RAISE_SIGSTOP(MAKE_CHILD);
+
+        apr_signal(SIGTERM, just_die);
+        child_main(slot);
+
+        clean_child_exit(0);
+    }
+    /* else */
+    ap_scoreboard_image->parent[slot].quiescing = 0;
+    ap_scoreboard_image->parent[slot].pid = pid;
+    return 0;
+}
+
+/* start up a bunch of children */
+static void startup_children(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < ap_daemons_limit; ++i) {
+        if (ap_scoreboard_image->parent[i].pid != 0) {
+            continue;
+        }
+        if (make_child(ap_server_conf, i) < 0) {
+            break;
+        }
+        --number_to_start;
+    }
+}
+
+
+/*
+ * idle_spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough idle servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int idle_spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE        (32)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_idle_server_maintenance(void)
+{
+    int i, j;
+    int idle_thread_count;
+    worker_score *ws;
+    process_score *ps;
+    int free_length;
+    int totally_free_length = 0;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead;
+    int total_non_dead;
+
+    /* initialize the free_list */
+    free_length = 0;
+
+    idle_thread_count = 0;
+    last_non_dead = -1;
+    total_non_dead = 0;
+
+    for (i = 0; i < ap_daemons_limit; ++i) {
+        /* Initialization to satisfy the compiler. It doesn't know
+         * that ap_threads_per_child is always > 0 */
+        int status = SERVER_DEAD;
+        int any_dying_threads = 0;
+        int any_dead_threads = 0;
+        int all_dead_threads = 1;
+
+        if (i >= ap_max_daemons_limit && totally_free_length == idle_spawn_rate)
+            break;
+        ps = &ap_scoreboard_image->parent[i];
+        for (j = 0; j < ap_threads_per_child; j++) {
+            ws = &ap_scoreboard_image->servers[i][j];
+            status = ws->status;
+
+            /* XXX any_dying_threads is probably no longer needed    GLA */
+            any_dying_threads = any_dying_threads || 
+                                (status == SERVER_GRACEFUL);
+            any_dead_threads = any_dead_threads || (status == SERVER_DEAD);
+            all_dead_threads = all_dead_threads &&
+                                   (status == SERVER_DEAD ||
+                                    status == SERVER_GRACEFUL);
+
+            /* We consider a starting server as idle because we started it
+             * at least a cycle ago, and if it still hasn't finished starting
+             * then we're just going to swamp things worse by forking more.
+             * So we hopefully won't need to fork more if we count it.
+             * This depends on the ordering of SERVER_READY and SERVER_STARTING.
+             */
+            if (status <= SERVER_READY && status != SERVER_DEAD &&
+                    !ps->quiescing &&
+                    ps->generation == ap_my_generation &&
+                 /* XXX the following shouldn't be necessary if we clean up 
+                  *     properly after seg faults, but we're not yet    GLA 
+                  */     
+                    ps->pid != 0) {
+                ++idle_thread_count;
+            }
+        }
+        if (any_dead_threads && totally_free_length < idle_spawn_rate 
+                && (!ps->pid               /* no process in the slot */
+                    || ps->quiescing)) {   /* or at least one is going away */
+            if (all_dead_threads) {
+                /* great! we prefer these, because the new process can
+                 * start more threads sooner.  So prioritize this slot 
+                 * by putting it ahead of any slots with active threads.
+                 *
+                 * first, make room by moving a slot that's potentially still
+                 * in use to the end of the array
+                 */
+                free_slots[free_length] = free_slots[totally_free_length];
+                free_slots[totally_free_length++] = i;
+            }
+            else {
+                /* slot is still in use - back of the bus
+                 */
+            free_slots[free_length] = i;
+            }
+            ++free_length;
+        }
+        /* XXX if (!ps->quiescing)     is probably more reliable  GLA */
+        if (!any_dying_threads) {
+            last_non_dead = i;
+            ++total_non_dead;
+        }
+    }
+    ap_max_daemons_limit = last_non_dead + 1;
+
+    if (idle_thread_count > max_spare_threads) {
+        /* Kill off one child */
+        ap_mpm_pod_signal(pod, TRUE);
+        idle_spawn_rate = 1;
+    }
+    else if (idle_thread_count < min_spare_threads) {
+        /* terminate the free list */
+        if (free_length == 0) {
+            /* only report this condition once */
+            static int reported = 0;
+            
+            if (!reported) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, 0, 
+                             ap_server_conf,
+                             "server reached MaxClients setting, consider"
+                             " raising the MaxClients setting");
+                reported = 1;
+            }
+            idle_spawn_rate = 1;
+        }
+        else {
+            if (free_length > idle_spawn_rate) {
+                free_length = idle_spawn_rate;
+            }
+            if (idle_spawn_rate >= 8) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0, 
+                             ap_server_conf,
+                             "server seems busy, (you may need "
+                             "to increase StartServers, ThreadsPerChild "
+                             "or Min/MaxSpareThreads), "
+                             "spawning %d children, there are around %d idle "
+                             "threads, and %d total children", free_length,
+                             idle_thread_count, total_non_dead);
+            }
+            for (i = 0; i < free_length; ++i) {
+                make_child(ap_server_conf, free_slots[i]);
+            }
+            /* the next time around we want to spawn twice as many if this
+             * wasn't good enough, but not if we've just done a graceful
+             */
+            if (hold_off_on_exponential_spawning) {
+                --hold_off_on_exponential_spawning;
+            }
+            else if (idle_spawn_rate < MAX_SPAWN_RATE) {
+                idle_spawn_rate *= 2;
+            }
+        }
+    }
+    else {
+      idle_spawn_rate = 1;
+    }
+}
+
+static void server_main_loop(int remaining_children_to_start)
+{
+    int child_slot;
+    apr_exit_why_e exitwhy;
+    int status, processed_status;
+    apr_proc_t pid;
+    int i;
+
+    while (!restart_pending && !shutdown_pending) {
+        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
+        
+        if (pid.pid != -1) {
+            processed_status = ap_process_child_status(&pid, exitwhy, status);
+            if (processed_status == APEXIT_CHILDFATAL) {
+                shutdown_pending = 1;
+                child_fatal = 1;
+                return;
+            }
+            /* non-fatal death... note that it's gone in the scoreboard. */
+            child_slot = find_child_by_pid(&pid);
+            if (child_slot >= 0) {
+                for (i = 0; i < ap_threads_per_child; i++)
+                    ap_update_child_status_from_indexes(child_slot, i, SERVER_DEAD, 
+                                                        (request_rec *) NULL);
+                
+                ap_scoreboard_image->parent[child_slot].pid = 0;
+                ap_scoreboard_image->parent[child_slot].quiescing = 0;
+                if (processed_status == APEXIT_CHILDSICK) {
+                    /* resource shortage, minimize the fork rate */
+                    idle_spawn_rate = 1;
+                }
+                else if (remaining_children_to_start
+                    && child_slot < ap_daemons_limit) {
+                    /* we're still doing a 1-for-1 replacement of dead
+                     * children with new children
+                     */
+                    make_child(ap_server_conf, child_slot);
+                    --remaining_children_to_start;
+                }
+#if APR_HAS_OTHER_CHILD
+            }
+            else if (apr_proc_other_child_read(&pid, status) == 0) {
+                /* handled */
+#endif
+            }
+            else if (is_graceful) {
+                /* Great, we've probably just lost a slot in the
+                 * scoreboard.  Somehow we don't know about this child.
+                 */
+                ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
+                             ap_server_conf,
+                             "long lost child came home! (pid %ld)",
+                             (long)pid.pid);
+            }
+            /* Don't perform idle maintenance when a child dies,
+             * only do it when there's a timeout.  Remember only a
+             * finite number of children can die, and it's pretty
+             * pathological for a lot to die suddenly.
+             */
+            continue;
+        }
+        else if (remaining_children_to_start) {
+            /* we hit a 1 second timeout in which none of the previous
+             * generation of children needed to be reaped... so assume
+             * they're all done, and pick up the slack if any is left.
+             */
+            startup_children(remaining_children_to_start);
+            remaining_children_to_start = 0;
+            /* In any event we really shouldn't do the code below because
+             * few of the servers we just started are in the IDLE state
+             * yet, so we'd mistakenly create an extra server.
+             */
+            continue;
+        }
+
+        perform_idle_server_maintenance();
+    }
+}
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    int remaining_children_to_start;
+    apr_status_t rv;
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    first_server_limit = server_limit;
+    first_thread_limit = thread_limit;
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "WARNING: Attempt to change ServerLimit or ThreadLimit "
+                     "ignored during restart");
+        changed_limit_at_restart = 0;
+    }
+    
+    /* Initialize cross-process accept lock */
+    ap_lock_fname = apr_psprintf(_pconf, "%s.%" APR_PID_T_FMT,
+                                 ap_server_root_relative(_pconf, ap_lock_fname),
+                                 ap_my_pid);
+
+    rv = apr_proc_mutex_create(&accept_mutex, ap_lock_fname, 
+                               ap_accept_lock_mech, _pconf);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create accept lock");
+        mpm_state = AP_MPMQ_STOPPING;
+        return 1;
+    }
+
+#if APR_USE_SYSVSEM_SERIALIZE
+    if (ap_accept_lock_mech == APR_LOCK_DEFAULT || 
+        ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#else
+    if (ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#endif
+        rv = unixd_set_proc_mutex_perms(accept_mutex);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                         "Couldn't set permissions on cross-process lock; "
+                         "check User and Group directives");
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+    }
+
+    if (!is_graceful) {
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+        /* fix the generation number in the global score; we just got a new,
+         * cleared scoreboard
+         */
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+    }
+
+    set_signals();
+    /* Don't thrash... */
+    if (max_spare_threads < min_spare_threads + ap_threads_per_child)
+        max_spare_threads = min_spare_threads + ap_threads_per_child;
+
+    /* If we're doing a graceful_restart then we're going to see a lot
+     * of children exiting immediately when we get into the main loop
+     * below (because we just sent them AP_SIG_GRACEFUL).  This happens pretty
+     * rapidly... and for each one that exits we'll start a new one until
+     * we reach at least daemons_min_free.  But we may be permitted to
+     * start more than that, so we'll just keep track of how many we're
+     * supposed to start up without the 1 second penalty between each fork.
+     */
+    remaining_children_to_start = ap_daemons_to_start;
+    if (remaining_children_to_start > ap_daemons_limit) {
+        remaining_children_to_start = ap_daemons_limit;
+    }
+    if (!is_graceful) {
+        startup_children(remaining_children_to_start);
+        remaining_children_to_start = 0;
+    }
+    else {
+        /* give the system some time to recover before kicking into
+            * exponential mode */
+        hold_off_on_exponential_spawning = 10;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                "%s configured -- resuming normal operations",
+                ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                "Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+		"AcceptMutex: %s (default: %s)",
+		apr_proc_mutex_name(accept_mutex),
+		apr_proc_mutex_defname());
+#endif
+    restart_pending = shutdown_pending = 0;
+    mpm_state = AP_MPMQ_RUNNING;
+
+    server_main_loop(remaining_children_to_start);
+    mpm_state = AP_MPMQ_STOPPING;
+
+    if (shutdown_pending) {
+        /* Time to gracefully shut down:
+         * Kill child processes, tell them to call child_exit, etc...
+         * (By "gracefully" we don't mean graceful in the same sense as 
+         * "apachectl graceful" where we allow old connections to finish.)
+         */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit, FALSE);
+        ap_reclaim_child_processes(1);                /* Start with SIGTERM */
+
+        if (!child_fatal) {
+            /* cleanup pid file on normal shutdown */
+            const char *pidfile = NULL;
+            pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+            if ( pidfile != NULL && unlink(pidfile) == 0)
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0,
+                             ap_server_conf,
+                             "removed PID file %s (pid=%ld)",
+                             pidfile, (long)getpid());
+    
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
+                         ap_server_conf, "caught SIGTERM, shutting down");
+        }
+        return 1;
+    }
+
+    /* we've been told to restart */
+    apr_signal(SIGHUP, SIG_IGN);
+
+    if (one_process) {
+        /* not worth thinking about */
+        return 1;
+    }
+
+    /* advance to the next generation */
+    /* XXX: we really need to make sure this new generation number isn't in
+     * use by any of the children.
+     */
+    ++ap_my_generation;
+    ap_scoreboard_image->global->running_generation = ap_my_generation;
+    
+    if (is_graceful) {
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                     AP_SIG_GRACEFUL_STRING " received.  Doing graceful restart");
+        /* wake up the children...time to die.  But we'll have more soon */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit, TRUE);
+    
+
+        /* This is mostly for debugging... so that we know what is still
+         * gracefully dealing with existing request.
+         */
+        
+    }
+    else {
+        /* Kill 'em all.  Since the child acts the same on the parents SIGTERM 
+         * and a SIGHUP, we may as well use the same signal, because some user
+         * pthreads are stealing signals from us left and right.
+         */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit, FALSE);
+
+        ap_reclaim_child_processes(1);                /* Start with SIGTERM */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                    "SIGHUP received.  Attempting to restart");
+    }
+
+    return 0;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int worker_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    apr_status_t rv;
+    ap_listen_rec *lr;
+
+    pconf = p;
+    ap_server_conf = s;
+
+    if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
+                     NULL, "no listening sockets available, shutting down");
+        return DONE;
+    }
+
+#if APR_O_NONBLOCK_INHERITED
+    for(lr = ap_listeners ; lr != NULL ; lr = lr->next) {
+        apr_socket_opt_set(lr->sd, APR_SO_NONBLOCK, 1);
+    }
+#endif /* APR_O_NONBLOCK_INHERITED */
+
+    if (!one_process) {
+        if ((rv = ap_mpm_pod_open(pconf, &pod))) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
+                    "Could not open pipe-of-death.");
+            return DONE;
+        }
+    }
+    return OK;
+}
+
+static int worker_pre_config(apr_pool_t *pconf, apr_pool_t *plog, 
+                             apr_pool_t *ptemp)
+{
+    static int restart_num = 0;
+    int no_detach, debug, foreground;
+    ap_directive_t *pdir;
+    ap_directive_t *max_clients = NULL;
+    apr_status_t rv;
+
+    mpm_state = AP_MPMQ_STARTING;
+    
+    /* make sure that "ThreadsPerChild" gets set before "MaxClients" */
+    for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next) {
+        if (strncasecmp(pdir->directive, "ThreadsPerChild", 15) == 0) {
+            if (!max_clients) {
+                break; /* we're in the clear, got ThreadsPerChild first */
+            }
+            else {
+                /* now to swap the data */
+                ap_directive_t temp;
+
+                temp.directive = pdir->directive;
+                temp.args = pdir->args;
+                /* Make sure you don't change 'next', or you may get loops! */
+                /* XXX: first_child, parent, and data can never be set
+                 * for these directives, right? -aaron */
+                temp.filename = pdir->filename;
+                temp.line_num = pdir->line_num;
+
+                pdir->directive = max_clients->directive;
+                pdir->args = max_clients->args;
+                pdir->filename = max_clients->filename;
+                pdir->line_num = max_clients->line_num;
+                
+                max_clients->directive = temp.directive;
+                max_clients->args = temp.args;
+                max_clients->filename = temp.filename;
+                max_clients->line_num = temp.line_num;
+                break;
+            }
+        }
+        else if (!max_clients
+                 && strncasecmp(pdir->directive, "MaxClients", 10) == 0) {
+            max_clients = pdir;
+        }
+    }
+
+    debug = ap_exists_config_define("DEBUG");
+
+    if (debug) {
+        foreground = one_process = 1;
+        no_detach = 0;
+    }
+    else {
+        one_process = ap_exists_config_define("ONE_PROCESS");
+        no_detach = ap_exists_config_define("NO_DETACH");
+        foreground = ap_exists_config_define("FOREGROUND");
+    }
+
+    /* sigh, want this only the second time around */
+    if (restart_num++ == 1) {
+        is_graceful = 0;
+
+        if (!one_process && !foreground) {
+            rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
+                                           : APR_PROC_DETACH_DAEMONIZE);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                             "apr_proc_detach failed");
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+        }
+        parent_pid = ap_my_pid = getpid();
+    }
+
+    unixd_pre_config(ptemp);
+    ap_listen_pre_config();
+    ap_daemons_to_start = DEFAULT_START_DAEMON;
+    min_spare_threads = DEFAULT_MIN_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
+    max_spare_threads = DEFAULT_MAX_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
+    ap_daemons_limit = server_limit;
+    ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_lock_fname = DEFAULT_LOCKFILE;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    ap_extended_status = 0;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    return OK;
+}
+
+static void threadpool_hooks(apr_pool_t *p)
+{
+    /* The worker open_logs phase must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+    one_process = 0;
+
+    ap_hook_open_logs(worker_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+    /* we need to set the MPM state before other pre-config hooks use MPM query
+     * to retrieve it, so register as REALLY_FIRST
+     */
+    ap_hook_pre_config(worker_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
+}
+
+static const char *set_daemons_to_start(cmd_parms *cmd, void *dummy,
+                                        const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_to_start = atoi(arg);
+    return NULL;
+}
+
+static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    min_spare_threads = atoi(arg);
+    if (min_spare_threads <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       min_spare_threads = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    max_spare_threads = atoi(arg);
+    return NULL;
+}
+
+static const char *set_max_clients (cmd_parms *cmd, void *dummy,
+                                     const char *arg) 
+{
+    int max_clients;
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    /* It is ok to use ap_threads_per_child here because we are
+     * sure that it gets set before MaxClients in the pre_config stage. */
+    max_clients = atoi(arg);
+    if (max_clients < ap_threads_per_child) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients (%d) must be at least as large",
+                    max_clients);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " large as ThreadsPerChild (%d). Automatically",
+                    ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " increasing MaxClients to %d.",
+                    ap_threads_per_child);
+       max_clients = ap_threads_per_child;
+    }
+    ap_daemons_limit = max_clients / ap_threads_per_child;
+    if ((max_clients > 0) && (max_clients % ap_threads_per_child)) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients (%d) is not an integer multiple",
+                    max_clients);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " of ThreadsPerChild (%d), lowering MaxClients to %d",
+                    ap_threads_per_child,
+                    ap_daemons_limit * ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " for a maximum of %d child processes,",
+                    ap_daemons_limit);
+       max_clients = ap_daemons_limit * ap_threads_per_child; 
+    }
+    if (ap_daemons_limit > server_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients of %d would require %d servers,",
+                    max_clients, ap_daemons_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " and would exceed the ServerLimit value of %d.",
+                    server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " Automatically lowering MaxClients to %d.  To increase,",
+                    server_limit * ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " please see the ServerLimit directive.");
+       ap_daemons_limit = server_limit;
+    } 
+    else if (ap_daemons_limit < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require MaxClients > 0, setting to 1");
+        ap_daemons_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_threads_per_child (cmd_parms *cmd, void *dummy,
+                                          const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_per_child = atoi(arg);
+    if (ap_threads_per_child > thread_limit) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
+                     "value of %d", ap_threads_per_child,
+                     thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "threads, lowering ThreadsPerChild to %d. To increase, please"
+                     " see the", thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " ThreadLimit directive.");
+        ap_threads_per_child = thread_limit;
+    }
+    else if (ap_threads_per_child < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadsPerChild > 0, setting to 1");
+        ap_threads_per_child = 1;
+    }
+    return NULL;
+}
+
+static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_server_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_server_limit = atoi(arg);
+    /* you cannot change ServerLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_server_limit &&
+        tmp_server_limit != server_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    server_limit = tmp_server_limit;
+    
+    if (server_limit > MAX_SERVER_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ServerLimit of %d exceeds compile time limit "
+                    "of %d servers,", server_limit, MAX_SERVER_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
+       server_limit = MAX_SERVER_LIMIT;
+    } 
+    else if (server_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ServerLimit > 0, setting to 1");
+	server_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_thread_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_thread_limit = atoi(arg);
+    /* you cannot change ThreadLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_thread_limit &&
+        tmp_thread_limit != thread_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    thread_limit = tmp_thread_limit;
+    
+    if (thread_limit > MAX_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ThreadLimit of %d exceeds compile time limit "
+                    "of %d servers,", thread_limit, MAX_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
+       thread_limit = MAX_THREAD_LIMIT;
+    } 
+    else if (thread_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadLimit > 0, setting to 1");
+	thread_limit = 1;
+    }
+    return NULL;
+}
+
+static const command_rec threadpool_cmds[] = {
+UNIX_DAEMON_COMMANDS,
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("StartServers", set_daemons_to_start, NULL, RSRC_CONF,
+  "Number of child processes launched at server startup"),
+AP_INIT_TAKE1("MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,
+  "Minimum number of idle children, to handle request spikes"),
+AP_INIT_TAKE1("MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,
+  "Maximum number of idle children"),
+AP_INIT_TAKE1("MaxClients", set_max_clients, NULL, RSRC_CONF,
+  "Maximum number of children alive at the same time"),
+AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
+  "Number of threads each child creates"),
+AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF,
+  "Maximum value of MaxClients for this run of Apache"),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+  "Maximum worker threads in a server for this run of Apache"),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_threadpool_module = {
+    MPM20_MODULE_STUFF,
+    ap_mpm_rewrite_args,        /* hook to run before apache parses args */
+    NULL,                       /* create per-directory config structure */
+    NULL,                       /* merge per-directory config structures */
+    NULL,                       /* create per-server config structure */
+    NULL,                       /* merge per-server config structures */
+    threadpool_cmds,            /* command apr_table_t */
+    threadpool_hooks            /* register_hooks */
+};
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/monitoring-services.txt b/rubbos/app/httpd-2.0.64/server/mpm/monitoring-services.txt
new file mode 100644
index 00000000..24665890
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/monitoring-services.txt
@@ -0,0 +1,94 @@
+From:    William A. Rowe, Jr. 
+Date:    June 7th '00
+Subject: service monitoring in Apache 1.3.13
+
+The concept for a taskbar monitor has been thrown around
+for a very long while.  1.3.13 introduced Win9x services,
+and that added fuel to the mix.  Here are some sideband
+observations I've made for other developers...
+
+About Apache as a console, don't start Apache hidden without
+any command line arguments if you want to launch it yourself
+in a hidden window (it will do the classic test for 
+AllocConsole/FreeConsole)... drop in some arguments such as
+the -f or -r option and it will fly without thinking it is a 
+service under 9x and NT.
+
+Rule two, don't use --ntservice as an argument, ever.  Only
+the Windows NT Service Control Manager is allowed to pass that
+flag, and only that flag, when it runs Apache.exe.  Do use 
+--ntservice as the sole argument to the executable name if 
+you are installing an Apache NT service yourself.
+
+Rule three, use -k start and -n name when maintaining the
+HKLM/Software/Microsoft/Windows/CurrentVersion/RunServices
+list, since there is no other way for Apache to know what 
+the service is named :)  And look at any 9x installed service's 
+RunServices entry in the registry for the start service semantic.
+
+Rule four, use the WinNT Service Control Manager exclusively
+for starting, stopping and restarting Apache as an NT service.
+The restart signal is the value 128, as documented in service.h 
+and service.c - this will continue to work in Apache 2.0.  If
+it fails, you are handling an older version (pre 1.3.13) of
+Apache, and need to stop and then start the service instead.
+
+Rule five, use the legacy pid-named events to signal Win9x 
+service Apache to restart and stop the service.  But don't
+bother looking for httpd.pid files... you can get the pid
+right from the hidden service control window.  Apache 1.3.13
+and 2.x create a hidden window named for the name of the 
+service (without the spaces), with a window class of
+"ApacheWin95ServiceMonitor", so can use FindWindow to track 
+down running Win9x services.  See the service.c code for how 
+I accomplished this pretty simply in the -k stop/-k restart
+handler.
+
+Taskbar Monitor App
+-------------------
+
+Basic requirements: a C code application using strictly the
+Win32 API, and not MFC or other Win32 frameworks.  Could use
+the service.c module to share some basic functions.  That
+module could be extended in Apache 2.0 to make this all easier.
+
+I think we are looking for an external app that simply acts 
+as a monitor or allows a stopped service to be started.  If 
+the user logs off, we loose the monitor app, but installed as 
+a shortcut in the Start group or in the registry key
+HKLM/Software/Microsoft/Windows/CurrentVersion/Run
+we will be just fine.  I'd like to see the monitor run only
+one instance to monitor all running services, for memory
+and resource conservation.
+
+I was thinking that the hover/iconbar title would tell them 
+"Test service is running", or "Test service is stopped".
+If they left click, they could stop or restart, or simply
+start if it is stopped.  There could be a preference that
+each service doesn't get it's own individual task icon unless 
+it is running, if it is a manual start service (or missing 
+from the RunServices list, which is the equivilant under 9x).
+
+If a specific service is set to Auto start or is in the 
+RunServices Win9x registry key, we must show them the stopped 
+icon, of course.  We might also keep the icon for any running
+service that stops abruptly.  But there could be a 'single 
+icon' option for the taskbar icon monitor that says show only
+a single status icon, for simplicity if the administrator runs
+many Apache services.
+
+But I was hoping that any right click would provide a menu
+of all Apache services with their status.  e.g.
+  Test service is stopped
+  Apache_2 service is running
+  MyWeb service is running
+and each would do the logical submenu, same as if that
+specific taskbar icon were left clicked, offering to start or
+offering to stop or restart the server, as appropriate.
+
+Finally, to identify all installed Apache services, just query 
+the registry key HKLM\SYSTEM\CurrentControlSet\Services for any 
+key that has the ImagePath value of "...\Apache.exe"... (quotes
+are significant here, if the leading quote is ommitted the 
+entire string ends with the text \Apache.exe - based on Apache's 
+own service installer in every released version.)
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/Makefile.in
new file mode 100644
index 00000000..38e598ed
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libmpmt_os2.la
+LTLIBRARY_SOURCES = mpmt_os2.c mpmt_os2_child.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/config5.m4 b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/config5.m4
new file mode 100644
index 00000000..b27c296d
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/config5.m4
@@ -0,0 +1,5 @@
+if test "$MPM_NAME" = "mpmt_os2" ; then
+    AC_CACHE_SAVE
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_NAME/Makefile)
+    APR_ADDTO(CFLAGS,-Zmt)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpm.h
new file mode 100644
index 00000000..15f341dd
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpm.h
@@ -0,0 +1,34 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_MPMT_OS2_H
+#define APACHE_MPM_MPMT_OS2_H
+
+#define MPMT_OS2_MPM
+
+#include "httpd.h"
+#include "mpm_default.h"
+#include "scoreboard.h"
+
+#define MPM_NAME "MPMT_OS2"
+
+extern server_rec *ap_server_conf;
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+
+#endif /* APACHE_MPM_MPMT_OS2_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpm_default.h
new file mode 100644
index 00000000..d45b2ce2
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpm_default.h
@@ -0,0 +1,59 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of servers processes to spawn off by default
+ */
+#ifndef DEFAULT_START_DAEMON
+#define DEFAULT_START_DAEMON 2
+#endif
+
+/* Maximum number of *free* server threads --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_SPARE_THREAD
+#define DEFAULT_MAX_SPARE_THREAD 10
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_SPARE_THREAD
+#define DEFAULT_MIN_SPARE_THREAD 5
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpmt_os2.c b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpmt_os2.c
new file mode 100644
index 00000000..2c7f57bf
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpmt_os2.c
@@ -0,0 +1,577 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* Multi-process, multi-threaded MPM for OS/2
+ *
+ * Server consists of
+ * - a main, parent process
+ * - a small, static number of child processes
+ *
+ * The parent process's job is to manage the child processes. This involves
+ * spawning children as required to ensure there are always ap_daemons_to_start
+ * processes accepting connections.
+ *
+ * Each child process consists of a a pool of worker threads and a
+ * main thread that accepts connections & passes them to the workers via
+ * a work queue. The worker thread pool is dynamic, managed by a maintanence
+ * thread so that the number of idle threads is kept between
+ * min_spare_threads & max_spare_threads.
+ *
+ */
+
+/*
+ Todo list
+ - Enforce MaxClients somehow
+*/
+#define CORE_PRIVATE
+#define INCL_NOPMAPI
+#define INCL_DOS
+#define INCL_DOSERRORS
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "mpm_default.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_config.h"
+#include "http_core.h"		/* for get_remote_host */
+#include "http_connection.h"
+#include "mpm.h"
+#include "ap_mpm.h"
+#include "ap_listen.h"
+#include "apr_portable.h"
+#include "mpm_common.h"
+#include "apr_strings.h"
+#include <os2.h>
+#include <process.h>
+
+/* We don't need many processes, 
+ * they're only for redundancy in the event of a crash 
+ */
+#define HARD_SERVER_LIMIT 10
+
+/* Limit on the total number of threads per process
+ */
+#ifndef HARD_THREAD_LIMIT
+#define HARD_THREAD_LIMIT 256
+#endif
+
+server_rec *ap_server_conf;
+static apr_pool_t *pconf = NULL;		/* Pool for config stuff */
+static const char *ap_pid_fname=NULL;
+
+/* Config globals */
+static int one_process = 0;
+static int ap_daemons_to_start = 0;
+static int ap_thread_limit = 0;
+static int ap_max_requests_per_child = 0;
+int ap_min_spare_threads = 0;
+int ap_max_spare_threads = 0;
+
+/* Keep track of a few interesting statistics */
+int ap_max_daemons_limit = -1;
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful = 0;
+ap_generation_t volatile ap_my_generation=0; /* Used by the scoreboard */
+static int is_parent_process=TRUE;
+HMTX ap_mpm_accept_mutex = 0;
+
+/* An array of these is stored in a shared memory area for passing
+ * sockets from the parent to child processes
+ */
+typedef struct {
+    struct sockaddr_in name;
+    apr_os_sock_t listen_fd;
+} listen_socket_t;
+
+typedef struct {
+    HMTX accept_mutex;
+    listen_socket_t listeners[1];
+} parent_info_t;
+
+static char master_main();
+static void spawn_child(int slot);
+void ap_mpm_child_main(apr_pool_t *pconf);
+static void set_signals();
+
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s )
+{
+    char *listener_shm_name;
+    parent_info_t *parent_info;
+    ULONG rc;
+    pconf = _pconf;
+    ap_server_conf = s;
+    restart_pending = 0;
+
+    DosSetMaxFH(ap_thread_limit * 2);
+    listener_shm_name = apr_psprintf(pconf, "/sharemem/httpd/parent_info.%d", getppid());
+    rc = DosGetNamedSharedMem((PPVOID)&parent_info, listener_shm_name, PAG_READ);
+    is_parent_process = rc != 0;
+    ap_scoreboard_fname = apr_psprintf(pconf, "/sharemem/httpd/scoreboard.%d", is_parent_process ? getpid() : getppid());
+
+    if (rc == 0) {
+        /* Child process */
+        ap_listen_rec *lr;
+        int num_listeners = 0;
+
+        ap_mpm_accept_mutex = parent_info->accept_mutex;
+
+        /* Set up a default listener if necessary */
+        if (ap_listeners == NULL) {
+            ap_listen_rec *lr = apr_pcalloc(s->process->pool, sizeof(ap_listen_rec));
+            ap_listeners = lr;
+            apr_sockaddr_info_get(&lr->bind_addr, "0.0.0.0", APR_UNSPEC,
+                                  DEFAULT_HTTP_PORT, 0, s->process->pool);
+            apr_socket_create(&lr->sd, lr->bind_addr->family,
+                              SOCK_STREAM, s->process->pool);
+        }
+
+        for (lr = ap_listeners; lr; lr = lr->next) {
+            apr_sockaddr_t *sa;
+            apr_os_sock_put(&lr->sd, &parent_info->listeners[num_listeners].listen_fd, pconf);
+            apr_socket_addr_get(&sa, APR_LOCAL, lr->sd);
+            num_listeners++;
+        }
+
+        DosFreeMem(parent_info);
+
+        /* Do the work */
+        ap_mpm_child_main(pconf);
+
+        /* Outta here */
+        return 1;
+    }
+    else {
+        /* Parent process */
+        char restart;
+        is_parent_process = TRUE;
+
+        if (ap_setup_listeners(ap_server_conf) < 1) {
+            ap_log_error(APLOG_MARK, APLOG_ALERT, 0, s,
+                         "no listening sockets available, shutting down");
+            return 1;
+        }
+
+        ap_log_pid(pconf, ap_pid_fname);
+
+        restart = master_main();
+        ++ap_my_generation;
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+
+        if (!restart) {
+            const char *pidfile = ap_server_root_relative(pconf, ap_pid_fname);
+
+            if (pidfile != NULL && remove(pidfile) == 0) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS,
+                             ap_server_conf, "removed PID file %s (pid=%d)",
+                             pidfile, getpid());
+            }
+
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                         "caught SIGTERM, shutting down");
+            return 1;
+        }
+    }  /* Parent process */
+
+    return 0; /* Restart */
+}
+
+
+
+/* Main processing of the parent process
+ * returns TRUE if restarting
+ */
+static char master_main()
+{
+    server_rec *s = ap_server_conf;
+    ap_listen_rec *lr;
+    parent_info_t *parent_info;
+    char *listener_shm_name;
+    int listener_num, num_listeners, slot;
+    ULONG rc;
+
+    printf("%s \n", ap_get_server_version());
+    set_signals();
+
+    if (ap_setup_listeners(ap_server_conf) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, 0, s,
+                     "no listening sockets available, shutting down");
+        return FALSE;
+    }
+
+    /* Allocate a shared memory block for the array of listeners */
+    for (num_listeners = 0, lr = ap_listeners; lr; lr = lr->next) {
+        num_listeners++;
+    }
+
+    listener_shm_name = apr_psprintf(pconf, "/sharemem/httpd/parent_info.%d", getpid());
+    rc = DosAllocSharedMem((PPVOID)&parent_info, listener_shm_name,
+                           sizeof(parent_info_t) + num_listeners * sizeof(listen_socket_t),
+                           PAG_READ|PAG_WRITE|PAG_COMMIT);
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, APR_FROM_OS_ERROR(rc), s,
+                     "failure allocating shared memory, shutting down");
+        return FALSE;
+    }
+
+    /* Store the listener sockets in the shared memory area for our children to see */
+    for (listener_num = 0, lr = ap_listeners; lr; lr = lr->next, listener_num++) {
+        apr_os_sock_get(&parent_info->listeners[listener_num].listen_fd, lr->sd);
+    }
+
+    /* Create mutex to prevent multiple child processes from detecting
+     * a connection with apr_poll()
+     */
+
+    rc = DosCreateMutexSem(NULL, &ap_mpm_accept_mutex, DC_SEM_SHARED, FALSE);
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, APR_FROM_OS_ERROR(rc), s,
+                     "failure creating accept mutex, shutting down");
+        return FALSE;
+    }
+
+    parent_info->accept_mutex = ap_mpm_accept_mutex;
+
+    /* Allocate shared memory for scoreboard */
+    if (ap_scoreboard_image == NULL) {
+        void *sb_mem;
+        rc = DosAllocSharedMem(&sb_mem, ap_scoreboard_fname,
+                               ap_calc_scoreboard_size(),
+                               PAG_COMMIT|PAG_READ|PAG_WRITE);
+
+        if (rc) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                         "unable to allocate shared memory for scoreboard , exiting");
+            return FALSE;
+        }
+
+        ap_init_scoreboard(sb_mem);
+    }
+
+    ap_scoreboard_image->global->restart_time = apr_time_now();
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		"%s configured -- resuming normal operations",
+		ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+		"Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+		"AcceptMutex: %s (default: %s)",
+		apr_proc_mutex_name(accept_mutex),
+		apr_proc_mutex_defname());
+#endif
+    if (one_process) {
+        ap_scoreboard_image->parent[0].pid = getpid();
+        ap_mpm_child_main(pconf);
+        return FALSE;
+    }
+
+    while (!restart_pending && !shutdown_pending) {
+        RESULTCODES proc_rc;
+        PID child_pid;
+        int active_children = 0;
+
+        /* Count number of active children */
+        for (slot=0; slot < HARD_SERVER_LIMIT; slot++) {
+            active_children += ap_scoreboard_image->parent[slot].pid != 0 &&
+                !ap_scoreboard_image->parent[slot].quiescing;
+        }
+
+        /* Spawn children if needed */
+        for (slot=0; slot < HARD_SERVER_LIMIT && active_children < ap_daemons_to_start; slot++) {
+            if (ap_scoreboard_image->parent[slot].pid == 0) {
+                spawn_child(slot);
+                active_children++;
+            }
+        }
+
+        rc = DosWaitChild(DCWA_PROCESSTREE, DCWW_NOWAIT, &proc_rc, &child_pid, 0);
+
+        if (rc == 0) {
+            /* A child has terminated, remove its scoreboard entry & terminate if necessary */
+            for (slot=0; ap_scoreboard_image->parent[slot].pid != child_pid && slot < HARD_SERVER_LIMIT; slot++);
+
+            if (slot < HARD_SERVER_LIMIT) {
+                ap_scoreboard_image->parent[slot].pid = 0;
+                ap_scoreboard_image->parent[slot].quiescing = 0;
+
+                if (proc_rc.codeTerminate == TC_EXIT) {
+                    /* Child terminated normally, check its exit code and
+                     * terminate server if child indicates a fatal error
+                     */
+                    if (proc_rc.codeResult == APEXIT_CHILDFATAL)
+                        break;
+                }
+            }
+        } else if (rc == ERROR_CHILD_NOT_COMPLETE) {
+            /* No child exited, lets sleep for a while.... */
+            apr_sleep(SCOREBOARD_MAINTENANCE_INTERVAL);
+        }
+    }
+
+    /* Signal children to shut down, either gracefully or immediately */
+    for (slot=0; slot<HARD_SERVER_LIMIT; slot++) {
+      kill(ap_scoreboard_image->parent[slot].pid, is_graceful ? SIGHUP : SIGTERM);
+    }
+
+    DosFreeMem(parent_info);
+    return restart_pending;
+}
+
+
+
+static void spawn_child(int slot)
+{
+    PPIB ppib;
+    PTIB ptib;
+    char fail_module[100];
+    char progname[CCHMAXPATH];
+    RESULTCODES proc_rc;
+    ULONG rc;
+
+    ap_scoreboard_image->parent[slot].generation = ap_my_generation;
+    DosGetInfoBlocks(&ptib, &ppib);
+    DosQueryModuleName(ppib->pib_hmte, sizeof(progname), progname);
+    rc = DosExecPgm(fail_module, sizeof(fail_module), EXEC_ASYNCRESULT,
+                    ppib->pib_pchcmd, NULL, &proc_rc, progname);
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "error spawning child, slot %d", slot);
+    }
+
+    if (ap_max_daemons_limit < slot) {
+        ap_max_daemons_limit = slot;
+    }
+
+    ap_scoreboard_image->parent[slot].pid = proc_rc.codeTerminate;
+}
+
+
+
+/* Signal handling routines */
+
+static void sig_term(int sig)
+{
+    shutdown_pending = 1;
+    signal(SIGTERM, SIG_DFL);
+}
+
+
+
+static void sig_restart(int sig)
+{
+    if (sig == SIGUSR1) {
+        is_graceful = 1;
+    }
+
+    restart_pending = 1;
+}
+
+
+
+static void set_signals()
+{
+    struct sigaction sa;
+
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+    sa.sa_handler = sig_term;
+
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");
+
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)");
+
+    sa.sa_handler = sig_restart;
+
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");
+    if (sigaction(SIGUSR1, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGUSR1)");
+}
+
+
+
+/* Enquiry functions used get MPM status info */
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch (query_code) {
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_max_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = HARD_THREAD_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS; 
+    }
+    return APR_ENOTIMPL;
+} 
+
+
+
+int ap_graceful_stop_signalled(void)
+{
+    return is_graceful;
+}
+
+
+
+/* Configuration handling stuff */
+
+static int mpmt_os2_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp)
+{
+    one_process = ap_exists_config_define("ONE_PROCESS") || 
+                  ap_exists_config_define("DEBUG");
+    is_graceful = 0;
+    ap_listen_pre_config();
+    ap_daemons_to_start = DEFAULT_START_DAEMON;
+    ap_thread_limit = HARD_THREAD_LIMIT;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    ap_extended_status = 0;
+    ap_min_spare_threads = DEFAULT_MIN_SPARE_THREAD;
+    ap_max_spare_threads = DEFAULT_MAX_SPARE_THREAD;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    return OK;
+}
+
+
+
+static void mpmt_os2_hooks(apr_pool_t *p)
+{
+    ap_hook_pre_config(mpmt_os2_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+
+
+static const char *set_daemons_to_start(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_to_start = atoi(arg);
+    return NULL;
+}
+
+
+
+static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy,
+					 const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_min_spare_threads = atoi(arg);
+
+    if (ap_min_spare_threads <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       ap_min_spare_threads = 1;
+    }
+       
+    return NULL;
+}
+
+
+
+static const char *set_max_spare_threads(cmd_parms *cmd, void *dummy,
+					 const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_max_spare_threads = atoi(arg);
+    return NULL;
+}
+
+
+
+static const char *ignore_cmd(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    return NULL;
+}
+
+
+
+static const command_rec mpmt_os2_cmds[] = {
+LISTEN_COMMANDS,
+AP_INIT_TAKE1( "StartServers", set_daemons_to_start, NULL, RSRC_CONF, 
+  "Number of child processes launched at server startup" ),
+AP_INIT_TAKE1("MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,
+  "Minimum number of idle children, to handle request spikes"),
+AP_INIT_TAKE1("MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,
+  "Maximum number of idle children"),
+AP_INIT_TAKE1("User", ignore_cmd, NULL, RSRC_CONF,
+  "Not applicable on this platform"),
+AP_INIT_TAKE1("Group", ignore_cmd, NULL, RSRC_CONF,
+  "Not applicable on this platform"),
+AP_INIT_TAKE1("ScoreBoardFile", ignore_cmd, NULL, RSRC_CONF, \
+  "Not applicable on this platform"),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_mpmt_os2_module = {
+    MPM20_MODULE_STUFF,
+    NULL,                       /* hook to run before apache parses args */
+    NULL,			/* create per-directory config structure */
+    NULL,			/* merge per-directory config structures */
+    NULL,			/* create per-server config structure */
+    NULL,			/* merge per-server config structures */
+    mpmt_os2_cmds,		/* command apr_table_t */
+    mpmt_os2_hooks,		/* register_hooks */
+};
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpmt_os2_child.c b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpmt_os2_child.c
new file mode 100644
index 00000000..1b47cae0
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/mpmt_os2/mpmt_os2_child.c
@@ -0,0 +1,497 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ 
+#define CORE_PRIVATE
+#define INCL_NOPMAPI
+#define INCL_DOS
+#define INCL_DOSERRORS
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "mpm_default.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_config.h"
+#include "http_core.h"		/* for get_remote_host */
+#include "http_connection.h"
+#include "mpm.h"
+#include "ap_mpm.h"
+#include "ap_listen.h"
+#include "apr_portable.h"
+#include "apr_poll.h"
+#include "mpm_common.h"
+#include "apr_strings.h"
+#include <os2.h>
+#include <process.h>
+
+/* XXXXXX move these to header file private to this MPM */
+
+/* We don't need many processes, 
+ * they're only for redundancy in the event of a crash 
+ */
+#define HARD_SERVER_LIMIT 10
+
+/* Limit on the total number of threads per process
+ */
+#ifndef HARD_THREAD_LIMIT
+#define HARD_THREAD_LIMIT 256
+#endif
+
+#define ID_FROM_CHILD_THREAD(c, t)    ((c * HARD_THREAD_LIMIT) + t)
+
+typedef struct {
+    apr_pool_t *pconn;
+    apr_socket_t *conn_sd;
+} worker_args_t;
+
+#define WORKTYPE_CONN 0
+#define WORKTYPE_EXIT 1
+
+static apr_pool_t *pchild = NULL;
+static int child_slot;
+static int shutdown_pending = 0;
+extern int ap_my_generation;
+static int volatile is_graceful = 1;
+HEV shutdown_event; /* signaled when this child is shutting down */
+
+/* grab some MPM globals */
+extern int ap_min_spare_threads;
+extern int ap_max_spare_threads;
+extern HMTX ap_mpm_accept_mutex;
+
+static void worker_main(void *vpArg);
+static void clean_child_exit(int code);
+static void set_signals();
+static void server_maintenance(void *vpArg);
+
+
+static void clean_child_exit(int code)
+{
+    if (pchild) {
+	apr_pool_destroy(pchild);
+    }
+
+    exit(code);
+}
+
+
+
+void ap_mpm_child_main(apr_pool_t *pconf)
+{
+    ap_listen_rec *lr = NULL;
+    ap_listen_rec *first_lr = NULL;
+    int requests_this_child = 0;
+    apr_socket_t *sd = ap_listeners->sd;
+    int nsds, rv = 0;
+    unsigned long ulTimes;
+    int my_pid = getpid();
+    ULONG rc, c;
+    HQUEUE workq;
+    apr_pollfd_t *pollset;
+    int num_listeners;
+    TID server_maint_tid;
+    void *sb_mem;
+
+    /* Stop Ctrl-C/Ctrl-Break signals going to child processes */
+    DosSetSignalExceptionFocus(0, &ulTimes);
+    set_signals();
+
+    /* Create pool for child */
+    apr_pool_create(&pchild, pconf);
+
+    ap_run_child_init(pchild, ap_server_conf);
+
+    /* Create an event semaphore used to trigger other threads to shutdown */
+    rc = DosCreateEventSem(NULL, &shutdown_event, 0, FALSE);
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "unable to create shutdown semaphore, exiting");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    /* Gain access to the scoreboard. */
+    rc = DosGetNamedSharedMem(&sb_mem, ap_scoreboard_fname,
+                              PAG_READ|PAG_WRITE);
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "scoreboard not readable in child, exiting");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_calc_scoreboard_size();
+    ap_init_scoreboard(sb_mem);
+
+    /* Gain access to the accpet mutex */
+    rc = DosOpenMutexSem(NULL, &ap_mpm_accept_mutex);
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "accept mutex couldn't be accessed in child, exiting");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    /* Find our pid in the scoreboard so we know what slot our parent allocated us */
+    for (child_slot = 0; ap_scoreboard_image->parent[child_slot].pid != my_pid && child_slot < HARD_SERVER_LIMIT; child_slot++);
+
+    if (child_slot == HARD_SERVER_LIMIT) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf,
+                     "child pid not found in scoreboard, exiting");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_my_generation = ap_scoreboard_image->parent[child_slot].generation;
+    memset(ap_scoreboard_image->servers[child_slot], 0, sizeof(worker_score) * HARD_THREAD_LIMIT);
+
+    /* Set up an OS/2 queue for passing connections & termination requests
+     * to worker threads
+     */
+    rc = DosCreateQueue(&workq, QUE_FIFO, apr_psprintf(pchild, "/queues/httpd/work.%d", my_pid));
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "unable to create work queue, exiting");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    /* Create initial pool of worker threads */
+    for (c = 0; c < ap_min_spare_threads; c++) {
+//        ap_scoreboard_image->servers[child_slot][c].tid = _beginthread(worker_main, NULL, 128*1024, (void *)c);
+    }
+
+    /* Start maintenance thread */
+    server_maint_tid = _beginthread(server_maintenance, NULL, 32768, NULL);
+
+    /* Set up poll */
+    for (num_listeners = 0, lr = ap_listeners; lr; lr = lr->next) {
+        num_listeners++;
+    }
+
+    apr_poll_setup(&pollset, num_listeners, pchild);
+
+    for (lr = ap_listeners; lr; lr = lr->next) {
+        apr_poll_socket_add(pollset, lr->sd, APR_POLLIN);
+    }
+
+    /* Main connection accept loop */
+    do {
+        apr_pool_t *pconn;
+        worker_args_t *worker_args;
+
+        apr_pool_create(&pconn, pchild);
+        worker_args = apr_palloc(pconn, sizeof(worker_args_t));
+        worker_args->pconn = pconn;
+
+        if (num_listeners == 1) {
+            rv = apr_accept(&worker_args->conn_sd, ap_listeners->sd, pconn);
+        } else {
+            rc = DosRequestMutexSem(ap_mpm_accept_mutex, SEM_INDEFINITE_WAIT);
+
+            if (shutdown_pending) {
+                DosReleaseMutexSem(ap_mpm_accept_mutex);
+                break;
+            }
+
+            rv = APR_FROM_OS_ERROR(rc);
+
+            if (rv == APR_SUCCESS) {
+                rv = apr_poll(pollset, num_listeners, &nsds, -1);
+                DosReleaseMutexSem(ap_mpm_accept_mutex);
+            }
+
+            if (rv == APR_SUCCESS) {
+                if (first_lr == NULL) {
+                    first_lr = ap_listeners;
+                }
+
+                lr = first_lr;
+
+                do {
+                    apr_int16_t event;
+
+                    apr_poll_revents_get(&event, lr->sd, pollset);
+
+                    if (event == APR_POLLIN) {
+                        apr_sockaddr_t *sa;
+                        apr_port_t port;
+                        apr_socket_addr_get(&sa, APR_LOCAL, lr->sd);
+                        apr_sockaddr_port_get(&port, sa);
+                        first_lr = lr->next;
+                        break;
+                    }
+                    lr = lr->next;
+
+                    if (!lr) {
+                        lr = ap_listeners;
+                    }
+                } while (lr != first_lr);
+
+                if (lr == first_lr) {
+                    continue;
+                }
+
+                sd = lr->sd;
+                rv = apr_accept(&worker_args->conn_sd, sd, pconn);
+            }
+        }
+
+        if (rv != APR_SUCCESS) {
+            if (!APR_STATUS_IS_EINTR(rv)) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                             "apr_accept");
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+        } else {
+            DosWriteQueue(workq, WORKTYPE_CONN, sizeof(worker_args_t), worker_args, 0);
+            requests_this_child++;
+        }
+
+        if (ap_max_requests_per_child != 0 && requests_this_child >= ap_max_requests_per_child)
+            break;
+    } while (!shutdown_pending && ap_my_generation == ap_scoreboard_image->global->running_generation);
+
+    ap_scoreboard_image->parent[child_slot].quiescing = 1;
+    DosPostEventSem(shutdown_event);
+    DosWaitThread(&server_maint_tid, DCWW_WAIT);
+
+    if (is_graceful) {
+        char someleft;
+
+        /* tell our worker threads to exit */
+        for (c=0; c<HARD_THREAD_LIMIT; c++) {
+            if (ap_scoreboard_image->servers[child_slot][c].status != SERVER_DEAD) {
+                DosWriteQueue(workq, WORKTYPE_EXIT, 0, NULL, 0);
+            }
+        }
+
+        do {
+            someleft = 0;
+
+            for (c=0; c<HARD_THREAD_LIMIT; c++) {
+                if (ap_scoreboard_image->servers[child_slot][c].status != SERVER_DEAD) {
+                    someleft = 1;
+                    DosSleep(1000);
+                    break;
+                }
+            }
+        } while (someleft);
+    } else {
+        DosPurgeQueue(workq);
+
+        for (c=0; c<HARD_THREAD_LIMIT; c++) {
+            if (ap_scoreboard_image->servers[child_slot][c].status != SERVER_DEAD) {
+                DosKillThread(ap_scoreboard_image->servers[child_slot][c].tid);
+            }
+        }
+    }
+
+    apr_pool_destroy(pchild);
+}
+
+
+
+void add_worker()
+{
+    int thread_slot;
+
+    /* Find a free thread slot */
+    for (thread_slot=0; thread_slot < HARD_THREAD_LIMIT; thread_slot++) {
+        if (ap_scoreboard_image->servers[child_slot][thread_slot].status == SERVER_DEAD) {
+            ap_scoreboard_image->servers[child_slot][thread_slot].status = SERVER_STARTING;
+            ap_scoreboard_image->servers[child_slot][thread_slot].tid =
+                _beginthread(worker_main, NULL, 128*1024, (void *)thread_slot);
+            break;
+        }
+    }
+}
+
+
+
+ULONG APIENTRY thread_exception_handler(EXCEPTIONREPORTRECORD *pReportRec,
+                                        EXCEPTIONREGISTRATIONRECORD *pRegRec,
+                                        CONTEXTRECORD *pContext,
+                                        PVOID p)
+{
+    int c;
+
+    if (pReportRec->fHandlerFlags & EH_NESTED_CALL) {
+        return XCPT_CONTINUE_SEARCH;
+    }
+
+    if (pReportRec->ExceptionNum == XCPT_ACCESS_VIOLATION ||
+        pReportRec->ExceptionNum == XCPT_INTEGER_DIVIDE_BY_ZERO) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf,
+                     "caught exception in worker thread, initiating child shutdown pid=%d", getpid());
+        for (c=0; c<HARD_THREAD_LIMIT; c++) {
+            if (ap_scoreboard_image->servers[child_slot][c].tid == _gettid()) {
+                ap_scoreboard_image->servers[child_slot][c].status = SERVER_DEAD;
+                break;
+            }
+        }
+
+        /* Shut down process ASAP, it could be quite unhealthy & leaking resources */
+        shutdown_pending = 1;
+        ap_scoreboard_image->parent[child_slot].quiescing = 1;
+        kill(getpid(), SIGHUP);
+        DosUnwindException(UNWIND_ALL, 0, 0);
+    }
+  
+    return XCPT_CONTINUE_SEARCH;
+}
+
+
+
+static void worker_main(void *vpArg)
+{
+    long conn_id;
+    conn_rec *current_conn;
+    apr_pool_t *pconn;
+    apr_allocator_t *allocator;
+    apr_bucket_alloc_t *bucket_alloc;
+    worker_args_t *worker_args;
+    HQUEUE workq;
+    PID owner;
+    int rc;
+    REQUESTDATA rd;
+    ULONG len;
+    BYTE priority;
+    int thread_slot = (int)vpArg;
+    EXCEPTIONREGISTRATIONRECORD reg_rec = { NULL, thread_exception_handler };
+    ap_sb_handle_t *sbh;
+  
+    /* Trap exceptions in this thread so we don't take down the whole process */
+    DosSetExceptionHandler( &reg_rec );
+
+    rc = DosOpenQueue(&owner, &workq,
+                      apr_psprintf(pchild, "/queues/httpd/work.%d", getpid()));
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "unable to open work queue, exiting");
+        ap_scoreboard_image->servers[child_slot][thread_slot].tid = 0;
+    }
+
+    conn_id = ID_FROM_CHILD_THREAD(child_slot, thread_slot);
+    ap_update_child_status_from_indexes(child_slot, thread_slot, SERVER_READY, 
+                                        NULL);
+
+    apr_allocator_create(&allocator);
+    apr_allocator_max_free_set(allocator, ap_max_mem_free);
+    bucket_alloc = apr_bucket_alloc_create_ex(allocator);
+
+    while (rc = DosReadQueue(workq, &rd, &len, (PPVOID)&worker_args, 0, DCWW_WAIT, &priority, NULLHANDLE),
+           rc == 0 && rd.ulData != WORKTYPE_EXIT) {
+        pconn = worker_args->pconn;
+        ap_create_sb_handle(&sbh, pconn, child_slot, thread_slot);
+        current_conn = ap_run_create_connection(pconn, ap_server_conf,
+                                                worker_args->conn_sd, conn_id,
+                                                sbh, bucket_alloc);
+
+        if (current_conn) {
+            ap_process_connection(current_conn, worker_args->conn_sd);
+            ap_lingering_close(current_conn);
+        }
+
+        apr_pool_destroy(pconn);
+        ap_update_child_status_from_indexes(child_slot, thread_slot, 
+                                            SERVER_READY, NULL);
+    }
+
+    ap_update_child_status_from_indexes(child_slot, thread_slot, SERVER_DEAD, 
+                                        NULL);
+
+    apr_bucket_alloc_destroy(bucket_alloc);
+    apr_allocator_destroy(allocator);
+}
+
+
+
+static void server_maintenance(void *vpArg)
+{
+    int num_idle, num_needed;
+    ULONG num_pending = 0;
+    int threadnum;
+    HQUEUE workq;
+    ULONG rc;
+    PID owner;
+
+    rc = DosOpenQueue(&owner, &workq,
+                      apr_psprintf(pchild, "/queues/httpd/work.%d", getpid()));
+
+    if (rc) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(rc), ap_server_conf,
+                     "unable to open work queue in maintenance thread");
+        return;
+    }
+
+    do {
+        for (num_idle=0, threadnum=0; threadnum < HARD_THREAD_LIMIT; threadnum++) {
+            num_idle += ap_scoreboard_image->servers[child_slot][threadnum].status == SERVER_READY;
+        }
+
+        DosQueryQueue(workq, &num_pending);
+        num_needed = ap_min_spare_threads - num_idle + num_pending;
+
+        if (num_needed > 0) {
+            for (threadnum=0; threadnum < num_needed; threadnum++) {
+                add_worker();
+            }
+        }
+
+        if (num_idle - num_pending > ap_max_spare_threads) {
+            DosWriteQueue(workq, WORKTYPE_EXIT, 0, NULL, 0);
+        }
+    } while (DosWaitEventSem(shutdown_event, 500) == ERROR_TIMEOUT);
+}
+
+
+
+/* Signal handling routines */
+
+static void sig_term(int sig)
+{
+    shutdown_pending = 1;
+    is_graceful = 0;
+    signal(SIGTERM, SIG_DFL);
+}
+
+
+
+static void sig_hup(int sig)
+{
+    shutdown_pending = 1;
+    is_graceful = 1;
+}
+
+
+
+static void set_signals()
+{
+    struct sigaction sa;
+
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+    sa.sa_handler = sig_term;
+
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");
+
+    sa.sa_handler = sig_hup;
+
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");
+}
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm.h
new file mode 100644
index 00000000..4b9a8392
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm.h
@@ -0,0 +1,48 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "scoreboard.h"
+
+#ifndef APACHE_MPM_THREADED_H
+#define APACHE_MPM_THREADED_H
+
+#define THREADED_MPM
+
+#define MPM_NAME "NetWare_Threaded"
+
+/*#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+  #define AP_MPM_WANT_WAIT_OR_TIMEOUT
+  #define AP_MPM_WANT_PROCESS_CHILD_STATUS
+  #define AP_MPM_WANT_SET_PIDFILE
+  #define AP_MPM_WANT_SET_SCOREBOARD
+  #define AP_MPM_WANT_SET_LOCKFILE 
+*/
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
+/*#define AP_MPM_WANT_SET_COREDUMPDIR
+  #define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH 
+*/
+
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+
+extern int ap_threads_per_child;
+extern int ap_thread_stack_size;
+extern int ap_max_workers_limit;
+extern server_rec *ap_server_conf;
+
+#endif /* APACHE_MPM_THREADED_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_default.h
new file mode 100644
index 00000000..397f5511
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_default.h
@@ -0,0 +1,108 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of servers to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_DAEMON
+#define DEFAULT_START_DAEMON 1
+#endif
+
+/* Maximum number of *free* server processes --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_FREE_DAEMON
+#define DEFAULT_MAX_FREE_DAEMON 1
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_FREE_DAEMON
+#define DEFAULT_MIN_FREE_DAEMON 1
+#endif
+
+/* Limit on the threads per process.  Clients will be locked out if more than
+ * this  * HARD_SERVER_LIMIT are needed.
+ *
+ * We keep this for one reason it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef HARD_THREAD_LIMIT
+#define HARD_THREAD_LIMIT 2048
+#endif
+
+#ifndef DEFAULT_THREADS_PER_CHILD
+#define DEFAULT_THREADS_PER_CHILD 50
+#endif
+
+/* Number of threads to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_THREADS
+#define DEFAULT_START_THREADS DEFAULT_THREADS_PER_CHILD
+#endif
+
+/* Maximum number of *free* threads --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_FREE_THREADS
+#define DEFAULT_MAX_FREE_THREADS 100
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_FREE_THREADS
+#define DEFAULT_MIN_FREE_THREADS 10
+#endif
+
+/* Check for definition of DEFAULT_REL_RUNTIMEDIR */
+#ifndef DEFAULT_REL_RUNTIMEDIR
+#define DEFAULT_REL_RUNTIMEDIR "logs"
+#endif
+
+/* File used for accept locking, when we use a file */
+/*#ifndef DEFAULT_LOCKFILE
+  #define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
+  #endif
+*/
+
+/* Where the main/parent process's pid is logged */
+/*#ifndef DEFAULT_PIDLOG
+  #define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+  #endif
+*/
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 0
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c
new file mode 100644
index 00000000..f3eb227c
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/netware/mpm_netware.c
@@ -0,0 +1,1295 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * httpd.c: simple http daemon for answering WWW file requests
+ *
+ * 
+ * 03-21-93  Rob McCool wrote original code (up to NCSA HTTPd 1.3)
+ * 
+ * 03-06-95  blong
+ *  changed server number for child-alone processes to 0 and changed name
+ *   of processes
+ *
+ * 03-10-95  blong
+ *      Added numerous speed hacks proposed by Robert S. Thau (rst@ai.mit.edu) 
+ *      including set group before fork, and call gettime before to fork
+ *      to set up libraries.
+ *
+ * 04-14-95  rst / rh
+ *      Brandon's code snarfed from NCSA 1.4, but tinkered to work with the
+ *      Apache server, and also to have child processes do accept() directly.
+ *
+ * April-July '95 rst
+ *      Extensive rework for Apache.
+ */
+
+#include "apr.h"
+#include "apr_portable.h"
+#include "apr_strings.h"
+#include "apr_thread_proc.h"
+#include "apr_signal.h"
+#include "apr_tables.h"
+#include "apr_getopt.h"
+#include "apr_thread_mutex.h"
+
+#define APR_WANT_STDIO
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#define CORE_PRIVATE
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "mpm_default.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_config.h"
+#include "http_core.h"             /* for get_remote_host */
+#include "http_connection.h"
+#include "scoreboard.h"
+#include "ap_mpm.h"
+#include "mpm_common.h"
+#include "ap_listen.h"
+#include "ap_mmn.h"
+
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+
+#include <signal.h>
+
+#include <netware.h>
+#include <nks/netware.h>
+#include <library.h>
+#include <screen.h>
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons --- first off,
+ * in case something goes seriously wrong, we want to stop the fork bomb
+ * short of actually crashing the machine we're running on by filling some
+ * kernel table.  Secondly, it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef HARD_SERVER_LIMIT
+#define HARD_SERVER_LIMIT 1
+#endif
+
+#define WORKER_DEAD         SERVER_DEAD
+#define WORKER_STARTING     SERVER_STARTING
+#define WORKER_READY        SERVER_READY
+#define WORKER_IDLE_KILL    SERVER_IDLE_KILL
+
+/* config globals */
+
+int ap_threads_per_child=0;         /* Worker threads per child */
+int ap_thread_stack_size=65536;
+static int ap_threads_to_start=0;
+static int ap_threads_min_free=0;
+static int ap_threads_max_free=0;
+static int ap_threads_limit=0;
+static int mpm_state = AP_MPMQ_STARTING;
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with MaxClients changes across SIGWINCH restarts.  We use this
+ * value to optimize routines that have to scan the entire scoreboard.
+ */
+int ap_max_workers_limit = -1;
+server_rec *ap_server_conf;
+
+/* *Non*-shared http_main globals... */
+
+int hold_screen_on_exit = 0; /* Indicates whether the screen should be held open */
+
+static fd_set listenfds;
+static int listenmaxfd;
+
+static apr_pool_t *pconf;               /* Pool for config stuff */
+static apr_pool_t *pmain;               /* Pool for httpd child stuff */
+
+static pid_t ap_my_pid;  /* it seems silly to call getpid all the time */
+static char *ap_my_addrspace = NULL;
+
+static int die_now = 0;
+
+/* Keep track of the number of worker threads currently active */
+static unsigned long worker_thread_count;
+static int request_count;
+
+/*  Structure used to register/deregister a console handler with the OS */
+static int InstallConsoleHandler(void);
+static void RemoveConsoleHandler(void);
+static int CommandLineInterpreter(scr_t screenID, const char *commandLine);
+static  CommandParser_t ConsoleHandler = {0, NULL, 0};
+#define HANDLEDCOMMAND  0
+#define NOTMYCOMMAND    1
+
+static int show_settings = 0;
+
+//#define DBINFO_ON
+//#define DBPRINT_ON
+#ifdef DBPRINT_ON
+#define DBPRINT0(s) printf(s)
+#define DBPRINT1(s,v1) printf(s,v1)
+#define DBPRINT2(s,v1,v2) printf(s,v1,v2)
+#else
+#define DBPRINT0(s)
+#define DBPRINT1(s,v1)
+#define DBPRINT2(s,v1,v2)
+#endif
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+static int volatile wait_to_finish=1;
+ap_generation_t volatile ap_my_generation=0;
+
+/* a clean exit from a child with proper cleanup */
+static void clean_child_exit(int code, int worker_num, apr_pool_t *ptrans, 
+                             apr_bucket_alloc_t *bucket_alloc) __attribute__ ((noreturn));
+static void clean_child_exit(int code, int worker_num, apr_pool_t *ptrans, 
+                             apr_bucket_alloc_t *bucket_alloc)
+{
+    apr_bucket_alloc_destroy(bucket_alloc);
+    if (!shutdown_pending) {
+        apr_pool_destroy(ptrans);
+    }
+
+    atomic_dec (&worker_thread_count);
+    if (worker_num >=0)
+        ap_update_child_status_from_indexes(0, worker_num, WORKER_DEAD, 
+                                            (request_rec *) NULL);
+    NXThreadExit((void*)&code);
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = 1;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = HARD_THREAD_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:
+            *result = ap_threads_min_free;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = ap_threads_max_free;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = 1;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+static void mpm_term(void)
+{
+    RemoveConsoleHandler();
+    wait_to_finish = 0;
+    NXThreadYield();
+}
+
+static void sig_term(int sig)
+{
+    if (shutdown_pending == 1) {
+        /* Um, is this _probably_ not an error, if the user has
+         * tried to do a shutdown twice quickly, so we won't
+         * worry about reporting it.
+         */
+        return;
+    }
+    shutdown_pending = 1;
+
+    DBPRINT0 ("waiting for threads\n");
+    while (wait_to_finish) {
+        apr_thread_yield();
+    }
+    DBPRINT0 ("goodbye\n");
+}
+
+/* restart() is the signal handler for SIGHUP and SIGWINCH
+ * in the parent process, unless running in ONE_PROCESS mode
+ */
+static void restart(void)
+{
+    if (restart_pending == 1) {
+        /* Probably not an error - don't bother reporting it */
+        return;
+    }
+    restart_pending = 1;
+    is_graceful = 1;
+}
+
+static void set_signals(void)
+{
+    apr_signal(SIGTERM, sig_term);
+    apr_signal(SIGABRT, sig_term);
+}
+
+int nlmUnloadSignaled(int wait)
+{
+    shutdown_pending = 1;
+
+    if (wait) {
+        while (wait_to_finish) {
+            NXThreadYield();
+        }
+    }
+
+    return 0;
+}
+
+/*****************************************************************
+ * Child process main loop.
+ * The following vars are static to avoid getting clobbered by longjmp();
+ * they are really private to child_main.
+ */
+
+
+int ap_graceful_stop_signalled(void)
+{
+    /* not ever called anymore... */
+    return 0;
+}
+
+#define MAX_WB_RETRIES  3
+#ifdef DBINFO_ON
+static int would_block = 0;
+static int retry_success = 0;
+static int retry_fail = 0;
+static int avg_retries = 0;
+#endif
+
+/*static */
+void worker_main(void *arg)
+{
+    ap_listen_rec *lr, *first_lr, *last_lr = NULL;
+    apr_pool_t *ptrans;
+    apr_pool_t *pbucket;
+    apr_allocator_t *allocator;
+    apr_bucket_alloc_t *bucket_alloc;
+    conn_rec *current_conn;
+    apr_status_t stat = APR_EINIT;
+    ap_sb_handle_t *sbh;
+
+    int my_worker_num = (int)arg;
+    apr_socket_t *csd = NULL;
+    int requests_this_child = 0;
+    apr_socket_t *sd = NULL;
+    fd_set main_fds;
+
+    int sockdes;
+    int srv;
+    struct timeval tv;
+    int wouldblock_retry;
+
+    tv.tv_sec = 1;
+    tv.tv_usec = 0;
+
+    apr_allocator_create(&allocator);
+    apr_allocator_max_free_set(allocator, ap_max_mem_free);
+
+    apr_pool_create_ex(&ptrans, pmain, NULL, allocator);
+    apr_allocator_owner_set(allocator, ptrans);
+    apr_pool_tag(ptrans, "transaction");
+
+    bucket_alloc = apr_bucket_alloc_create_ex(allocator);
+
+    atomic_inc (&worker_thread_count);
+
+    while (!die_now) {
+        /*
+        * (Re)initialize this child to a pre-connection state.
+        */
+        current_conn = NULL;
+        apr_pool_clear(ptrans);
+
+        if ((ap_max_requests_per_child > 0
+            && requests_this_child++ >= ap_max_requests_per_child)) {
+            DBPRINT1 ("\n**Thread slot %d is shutting down", my_worker_num);
+            clean_child_exit(0, my_worker_num, ptrans, bucket_alloc);
+        }
+
+        ap_update_child_status_from_indexes(0, my_worker_num, WORKER_READY, 
+                                            (request_rec *) NULL);
+
+        /*
+        * Wait for an acceptable connection to arrive.
+        */
+
+        for (;;) {
+            if (shutdown_pending || restart_pending || (ap_scoreboard_image->servers[0][my_worker_num].status == WORKER_IDLE_KILL)) {
+                DBPRINT1 ("\nThread slot %d is shutting down\n", my_worker_num);
+                clean_child_exit(0, my_worker_num, ptrans, bucket_alloc);
+            }
+
+            /* Check the listen queue on all sockets for requests */
+            memcpy(&main_fds, &listenfds, sizeof(fd_set));
+            srv = select(listenmaxfd + 1, &main_fds, NULL, NULL, &tv);
+
+            if (srv <= 0) {
+                if (srv < 0) {
+                    ap_log_error(APLOG_MARK, APLOG_NOTICE, WSAGetLastError(), ap_server_conf,
+                        "select() failed on listen socket");
+                    apr_thread_yield();
+                }
+                continue;
+            }
+
+            /* remember the last_lr we searched last time around so that
+            we don't end up starving any particular listening socket */
+            if (last_lr == NULL) {
+                lr = ap_listeners;
+            }
+            else {
+                lr = last_lr->next;
+                if (!lr)
+                    lr = ap_listeners;
+            }
+            first_lr = lr;
+            do {
+                apr_os_sock_get(&sockdes, lr->sd);
+                if (FD_ISSET(sockdes, &main_fds))
+                    goto got_listener;
+                lr = lr->next;
+                if (!lr)
+                    lr = ap_listeners;
+            } while (lr != first_lr);
+            /* if we get here, something unexpected happened. Go back
+            into the select state and try again.
+            */
+            continue;
+        got_listener:
+            last_lr = lr;
+            sd = lr->sd;
+
+            wouldblock_retry = MAX_WB_RETRIES;
+
+            while (wouldblock_retry) {
+                if ((stat = apr_accept(&csd, sd, ptrans)) == APR_SUCCESS) {
+                    break;
+                }
+                else {
+                    /* if the error is a wouldblock then maybe we were too
+                        quick try to pull the next request from the listen 
+                        queue.  Try a few more times then return to our idle
+                        listen state. */
+                    if (!APR_STATUS_IS_EAGAIN(stat)) {
+                        break;
+                    }
+
+                    if (wouldblock_retry--) {
+                        apr_thread_yield();
+                    }
+                }
+            }
+
+            /* If we got a new socket, set it to non-blocking mode and process
+                it.  Otherwise handle the error. */
+            if (stat == APR_SUCCESS) {
+                apr_socket_opt_set(csd, APR_SO_NONBLOCK, 0);
+#ifdef DBINFO_ON
+                if (wouldblock_retry < MAX_WB_RETRIES) {
+                    retry_success++;
+                    avg_retries += (MAX_WB_RETRIES-wouldblock_retry);
+                }
+#endif
+                break;       /* We have a socket ready for reading */
+            }
+            else {
+#ifdef DBINFO_ON
+                if (APR_STATUS_IS_EAGAIN(stat)) {
+                        would_block++;
+                        retry_fail++;
+                }
+                else
+#else
+                if (APR_STATUS_IS_EAGAIN(stat) ||
+#endif
+                    APR_STATUS_IS_ECONNRESET(stat) ||
+                    APR_STATUS_IS_ETIMEDOUT(stat) ||
+                    APR_STATUS_IS_EHOSTUNREACH(stat) ||
+                    APR_STATUS_IS_ENETUNREACH(stat)) {
+                        ;
+                }
+                else if (APR_STATUS_IS_ENETDOWN(stat)) {
+                       /*
+                        * When the network layer has been shut down, there
+                        * is not much use in simply exiting: the parent
+                        * would simply re-create us (and we'd fail again).
+                        * Use the CHILDFATAL code to tear the server down.
+                        * @@@ Martin's idea for possible improvement:
+                        * A different approach would be to define
+                        * a new APEXIT_NETDOWN exit code, the reception
+                        * of which would make the parent shutdown all
+                        * children, then idle-loop until it detected that
+                        * the network is up again, and restart the children.
+                        * Ben Hyde noted that temporary ENETDOWN situations
+                        * occur in mobile IP.
+                        */
+                        ap_log_error(APLOG_MARK, APLOG_EMERG, stat, ap_server_conf,
+                            "apr_accept: giving up.");
+                        clean_child_exit(APEXIT_CHILDFATAL, my_worker_num, ptrans, 
+                                         bucket_alloc);
+                }
+                else {
+                        ap_log_error(APLOG_MARK, APLOG_ERR, stat, ap_server_conf,
+                            "apr_accept: (client socket)");
+                        clean_child_exit(1, my_worker_num, ptrans, bucket_alloc);
+                }
+            }
+        }
+
+        ap_create_sb_handle(&sbh, ptrans, 0, my_worker_num);
+        /*
+        * We now have a connection, so set it up with the appropriate
+        * socket options, file descriptors, and read/write buffers.
+        */
+        current_conn = ap_run_create_connection(ptrans, ap_server_conf, csd, 
+                                                my_worker_num, sbh,
+                                                bucket_alloc);
+        if (current_conn) {
+            ap_process_connection(current_conn, csd);
+            ap_lingering_close(current_conn);
+        }
+        request_count++;
+    }
+    clean_child_exit(0, my_worker_num, ptrans, bucket_alloc);
+}
+
+
+static int make_child(server_rec *s, int slot)
+{
+    int tid;
+    int err=0;
+    NXContext_t ctx;
+
+    if (slot + 1 > ap_max_workers_limit) {
+        ap_max_workers_limit = slot + 1;
+    }
+
+    ap_update_child_status_from_indexes(0, slot, WORKER_STARTING, 
+                                        (request_rec *) NULL);
+
+    if (ctx = NXContextAlloc((void (*)(void *)) worker_main, (void*)slot, NX_PRIO_MED, ap_thread_stack_size, NX_CTX_NORMAL, &err)) {
+        char threadName[32];
+
+        sprintf (threadName, "Apache_Worker %d", slot);
+        NXContextSetName(ctx, threadName);
+        err = NXThreadCreate(ctx, NX_THR_BIND_CONTEXT, &tid);
+        if (err) {
+            NXContextFree (ctx);
+        }
+    }
+
+    if (err) {
+        /* create thread didn't succeed. Fix the scoreboard or else
+        * it will say SERVER_STARTING forever and ever
+        */
+        ap_update_child_status_from_indexes(0, slot, WORKER_DEAD, 
+                                            (request_rec *) NULL);
+
+        /* In case system resources are maxxed out, we don't want
+        Apache running away with the CPU trying to fork over and
+        over and over again. */
+        apr_thread_yield();
+
+        return -1;
+    }
+
+    ap_scoreboard_image->servers[0][slot].tid = tid;
+
+    return 0;
+}
+
+
+/* start up a bunch of worker threads */
+static void startup_workers(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < ap_threads_limit; ++i) {
+        if (ap_scoreboard_image->servers[0][i].status != WORKER_DEAD) {
+            continue;
+        }
+        if (make_child(ap_server_conf, i) < 0) {
+            break;
+        }
+        --number_to_start;
+    }
+}
+
+
+/*
+ * idle_spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough idle servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int idle_spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE (64)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_idle_server_maintenance(apr_pool_t *p)
+{
+    int i;
+    int to_kill;
+    int idle_count;
+    worker_score *ws;
+    int free_length;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead;
+    int total_non_dead;
+
+    /* initialize the free_list */
+    free_length = 0;
+
+    to_kill = -1;
+    idle_count = 0;
+    last_non_dead = -1;
+    total_non_dead = 0;
+
+    for (i = 0; i < ap_threads_limit; ++i) {
+        int status;
+
+        if (i >= ap_max_workers_limit && free_length == idle_spawn_rate)
+            break;
+        ws = &ap_scoreboard_image->servers[0][i];
+        status = ws->status;
+        if (status == WORKER_DEAD) {
+            /* try to keep children numbers as low as possible */
+            if (free_length < idle_spawn_rate) {
+                free_slots[free_length] = i;
+                ++free_length;
+            }
+        }
+        else if (status == WORKER_IDLE_KILL) {
+            /* If it is already marked to die, skip it */
+            continue;
+        }
+        else {
+            /* We consider a starting server as idle because we started it
+            * at least a cycle ago, and if it still hasn't finished starting
+            * then we're just going to swamp things worse by forking more.
+            * So we hopefully won't need to fork more if we count it.
+            * This depends on the ordering of SERVER_READY and SERVER_STARTING.
+            */
+            if (status <= WORKER_READY) {
+                ++ idle_count;
+                /* always kill the highest numbered child if we have to...
+                * no really well thought out reason ... other than observing
+                * the server behaviour under linux where lower numbered children
+                * tend to service more hits (and hence are more likely to have
+                * their data in cpu caches).
+                */
+                to_kill = i;
+            }
+
+            ++total_non_dead;
+            last_non_dead = i;
+        }
+    }
+    DBPRINT2("Total: %d Idle Count: %d  \r", total_non_dead, idle_count);
+    ap_max_workers_limit = last_non_dead + 1;
+    if (idle_count > ap_threads_max_free) {
+        /* kill off one child... we use the pod because that'll cause it to
+        * shut down gracefully, in case it happened to pick up a request
+        * while we were counting
+        */
+        idle_spawn_rate = 1;
+        ap_update_child_status_from_indexes(0, last_non_dead, WORKER_IDLE_KILL, 
+                                            (request_rec *) NULL);
+        DBPRINT1("\nKilling idle thread: %d\n", last_non_dead);
+    }
+    else if (idle_count < ap_threads_min_free) {
+        /* terminate the free list */
+        if (free_length == 0) {
+            /* only report this condition once */
+            static int reported = 0;
+
+            if (!reported) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf,
+                    "server reached MaxClients setting, consider"
+                    " raising the MaxClients setting");
+                reported = 1;
+            }
+            idle_spawn_rate = 1;
+        }
+        else {
+            if (idle_spawn_rate >= 8) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                    "server seems busy, (you may need "
+                    "to increase StartServers, or Min/MaxSpareServers), "
+                    "spawning %d children, there are %d idle, and "
+                    "%d total children", idle_spawn_rate,
+                    idle_count, total_non_dead);
+            }
+            DBPRINT0("\n");
+            for (i = 0; i < free_length; ++i) {
+                DBPRINT1("Spawning additional thread slot: %d\n", free_slots[i]);
+                make_child(ap_server_conf, free_slots[i]);
+            }
+            /* the next time around we want to spawn twice as many if this
+            * wasn't good enough, but not if we've just done a graceful
+            */
+            if (hold_off_on_exponential_spawning) {
+                --hold_off_on_exponential_spawning;
+            }
+            else if (idle_spawn_rate < MAX_SPAWN_RATE) {
+                idle_spawn_rate *= 2;
+            }
+        }
+    }
+    else {
+        idle_spawn_rate = 1;
+    }
+}
+
+static void display_settings ()
+{
+    int status_array[SERVER_NUM_STATUS];
+    int i, status, total=0;
+    int reqs = request_count;
+#ifdef DBINFO_ON
+    int wblock = would_block;
+    
+    would_block = 0;
+#endif    
+
+    request_count = 0;
+
+    ClearScreen (getscreenhandle());
+    printf("%s \n", ap_get_server_version());
+
+    for (i=0;i<SERVER_NUM_STATUS;i++) {
+        status_array[i] = 0;
+    }
+
+    for (i = 0; i < ap_threads_limit; ++i) {
+        status = (ap_scoreboard_image->servers[0][i]).status;
+        status_array[status]++;
+    }
+
+    for (i=0;i<SERVER_NUM_STATUS;i++) {
+        switch(i)
+        {
+        case SERVER_DEAD:
+            printf ("Available:\t%d\n", status_array[i]);
+            break;
+        case SERVER_STARTING:
+            printf ("Starting:\t%d\n", status_array[i]);
+            break;
+        case SERVER_READY:
+            printf ("Ready:\t\t%d\n", status_array[i]);
+            break;
+        case SERVER_BUSY_READ:
+            printf ("Busy:\t\t%d\n", status_array[i]);
+            break;
+        case SERVER_BUSY_WRITE:
+            printf ("Busy Write:\t%d\n", status_array[i]);
+            break;
+        case SERVER_BUSY_KEEPALIVE:
+            printf ("Busy Keepalive:\t%d\n", status_array[i]);
+            break;
+        case SERVER_BUSY_LOG:
+            printf ("Busy Log:\t%d\n", status_array[i]);
+            break;
+        case SERVER_BUSY_DNS:
+            printf ("Busy DNS:\t%d\n", status_array[i]);
+            break;
+        case SERVER_CLOSING:
+            printf ("Closing:\t%d\n", status_array[i]);
+            break;
+        case SERVER_GRACEFUL:
+            printf ("Restart:\t%d\n", status_array[i]);
+            break;
+        case SERVER_IDLE_KILL:
+            printf ("Idle Kill:\t%d\n", status_array[i]);
+            break;
+        default:
+            printf ("Unknown Status:\t%d\n", status_array[i]);
+            break;
+        }
+        if (i != SERVER_DEAD)
+            total+=status_array[i];
+    }
+    printf ("Total Running:\t%d\tout of: \t%d\n", total, ap_threads_limit);
+    printf ("Requests per interval:\t%d\n", reqs);
+    
+#ifdef DBINFO_ON
+    printf ("Would blocks:\t%d\n", wblock);
+    printf ("Successful retries:\t%d\n", retry_success);
+    printf ("Failed retries:\t%d\n", retry_fail);
+    printf ("Avg retries:\t%d\n", retry_success == 0 ? 0 : avg_retries / retry_success);
+#endif
+}
+
+static void show_server_data()
+{
+    ap_listen_rec *lr;
+    module **m;
+
+    printf("%s\n", ap_get_server_version());
+    if (ap_my_addrspace && (ap_my_addrspace[0] != 'O') && (ap_my_addrspace[1] != 'S'))
+        printf("   Running in address space %s\n", ap_my_addrspace);
+
+
+    /* Display listening ports */
+    printf("   Listening on port(s):");
+    lr = ap_listeners;
+    do {
+       printf(" %d", lr->bind_addr->port);
+       lr = lr->next;
+    } while(lr && lr != ap_listeners);
+    
+    /* Display dynamic modules loaded */
+    printf("\n");    
+    for (m = ap_loaded_modules; *m != NULL; m++) {
+        if (((module*)*m)->dynamic_load_handle) {
+            printf("   Loaded dynamic module %s\n", ((module*)*m)->name);
+        }
+    }
+}
+
+
+static int setup_listeners(server_rec *s)
+{
+    ap_listen_rec *lr;
+    int sockdes;
+
+    if (ap_setup_listeners(s) < 1 ) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, 0, s,
+            "no listening sockets available, shutting down");
+        return -1;
+    }
+
+    listenmaxfd = -1;
+    FD_ZERO(&listenfds);
+    for (lr = ap_listeners; lr; lr = lr->next) {
+        apr_os_sock_get(&sockdes, lr->sd);
+        FD_SET(sockdes, &listenfds);
+        if (sockdes > listenmaxfd) {
+            listenmaxfd = sockdes;
+        }
+    }
+    return 0;
+}
+
+static int shutdown_listeners()
+{
+    ap_listen_rec *lr;
+
+    for (lr = ap_listeners; lr; lr = lr->next) {
+        apr_socket_close(lr->sd);
+    }
+    ap_listeners = NULL;
+    return 0;
+}
+
+/*****************************************************************
+ * Executive routines.
+ */
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    apr_status_t status=0;
+
+    pconf = _pconf;
+    ap_server_conf = s;
+
+    if (setup_listeners(s)) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, status, s,
+            "no listening sockets available, shutting down");
+        return -1;
+    }
+
+    restart_pending = shutdown_pending = 0;
+    worker_thread_count = 0;
+
+    if (!is_graceful) {
+        if (ap_run_pre_mpm(s->process->pool, SB_NOT_SHARED) != OK) {
+            return 1;
+        }
+    }
+
+    /* Only set slot 0 since that is all NetWare will ever have. */
+    ap_scoreboard_image->parent[0].pid = getpid();
+
+    set_signals();
+
+    apr_pool_create(&pmain, pconf);
+    ap_run_child_init(pmain, ap_server_conf);
+
+    if (ap_threads_max_free < ap_threads_min_free + 1)	/* Don't thrash... */
+        ap_threads_max_free = ap_threads_min_free + 1;
+    request_count = 0;
+
+    startup_workers(ap_threads_to_start);
+
+     /* Allow the Apache screen to be closed normally on exit() only if it
+        has not been explicitly forced to close on exit(). (ie. the -E flag
+        was specified at startup) */
+    if (hold_screen_on_exit > 0) {
+        hold_screen_on_exit = 0;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+            "%s configured -- resuming normal operations",
+            ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+            "Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+            "AcceptMutex: %s (default: %s)",
+            apr_proc_mutex_name(accept_mutex),
+            apr_proc_mutex_defname());
+#endif
+    show_server_data();
+
+    mpm_state = AP_MPMQ_RUNNING;
+    while (!restart_pending && !shutdown_pending) {
+        perform_idle_server_maintenance(pconf);
+        if (show_settings)
+            display_settings();
+        apr_thread_yield();
+        apr_sleep(SCOREBOARD_MAINTENANCE_INTERVAL);
+    }
+    mpm_state = AP_MPMQ_STOPPING;
+
+
+    /* Shutdown the listen sockets so that we don't get stuck in a blocking call. 
+    shutdown_listeners();*/
+
+    if (shutdown_pending) { /* Got an unload from the console */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+            "caught SIGTERM, shutting down");
+
+        while (worker_thread_count > 0) {
+            printf ("\rShutdown pending. Waiting for %d thread(s) to terminate...", 
+                    worker_thread_count);
+            apr_thread_yield();
+        }
+
+        return 1;
+    }
+    else {  /* the only other way out is a restart */
+        /* advance to the next generation */
+        /* XXX: we really need to make sure this new generation number isn't in
+         * use by any of the children.
+         */
+        ++ap_my_generation;
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                "Graceful restart requested, doing restart");
+
+        /* Wait for all of the threads to terminate before initiating the restart */
+        while (worker_thread_count > 0) {
+            printf ("\rRestart pending. Waiting for %d thread(s) to terminate...",
+                    worker_thread_count);
+            apr_thread_yield();
+        }
+        printf ("\nRestarting...\n");
+    }
+
+    return 0;
+}
+
+static int netware_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
+{
+    int debug;
+    char *addrname = NULL;
+
+    mpm_state = AP_MPMQ_STARTING;
+
+    debug = ap_exists_config_define("DEBUG");
+
+    is_graceful = 0;
+    ap_my_pid = getpid();
+    addrname = getaddressspacename (NULL, NULL);
+    if (addrname) {
+        ap_my_addrspace = apr_pstrdup (p, addrname);
+        free (addrname);
+    }
+
+    ap_listen_pre_config();
+    ap_threads_to_start = DEFAULT_START_THREADS;
+    ap_threads_min_free = DEFAULT_MIN_FREE_THREADS;
+    ap_threads_max_free = DEFAULT_MAX_FREE_THREADS;
+    ap_threads_limit = HARD_THREAD_LIMIT;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    ap_extended_status = 0;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+    ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    return OK;
+}
+
+static void netware_mpm_hooks(apr_pool_t *p)
+{
+    ap_hook_pre_config(netware_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+void netware_rewrite_args(process_rec *process) 
+{
+    char *def_server_root;
+    char optbuf[3];
+    const char *opt_arg;
+    apr_getopt_t *opt;
+    apr_array_header_t *mpm_new_argv;
+
+
+    atexit (mpm_term);
+    InstallConsoleHandler();
+
+    /* Make sure to hold the Apache screen open if exit() is called */
+    hold_screen_on_exit = 1;
+
+    /* Rewrite process->argv[]; 
+     *
+     * add default -d serverroot from the path of this executable
+     * 
+     * The end result will look like:
+     *     The -d serverroot default from the running executable
+     */
+    if (process->argc > 0) {
+        char *s = apr_pstrdup (process->pconf, process->argv[0]);
+        if (s) {
+            int i, len = strlen(s);
+
+            for (i=len; i; i--) {
+                if (s[i] == '\\' || s[i] == '/') {
+                    s[i] = '\0';
+                    apr_filepath_merge(&def_server_root, NULL, s, 
+                        APR_FILEPATH_TRUENAME, process->pool);
+                    break;
+                }
+            }
+            /* Use process->pool so that the rewritten argv
+            * lasts for the lifetime of the server process,
+            * because pconf will be destroyed after the 
+            * initial pre-flight of the config parser.
+            */
+            mpm_new_argv = apr_array_make(process->pool, process->argc + 2,
+                                  sizeof(const char *));
+            *(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
+            *(const char **)apr_array_push(mpm_new_argv) = "-d";
+            *(const char **)apr_array_push(mpm_new_argv) = def_server_root;
+
+            optbuf[0] = '-';
+            optbuf[2] = '\0';
+            apr_getopt_init(&opt, process->pool, process->argc, (char**) process->argv);
+            while (apr_getopt(opt, AP_SERVER_BASEARGS"n:", optbuf + 1, &opt_arg) == APR_SUCCESS) {
+                switch (optbuf[1]) {
+                case 'n':
+                    if (opt_arg) {
+                        renamescreen(opt_arg);
+                    }
+                    break;
+                case 'E':
+                    /* Don't need to hold the screen open if the output is going to a file */
+                    hold_screen_on_exit = -1;
+                default:
+                    *(const char **)apr_array_push(mpm_new_argv) =
+                        apr_pstrdup(process->pool, optbuf);
+
+                    if (opt_arg) {
+                        *(const char **)apr_array_push(mpm_new_argv) = opt_arg;
+                    }
+                    break;
+                }
+            }
+            process->argc = mpm_new_argv->nelts; 
+            process->argv = (const char * const *) mpm_new_argv->elts;
+        }
+    }
+}
+
+static int CommandLineInterpreter(scr_t screenID, const char *commandLine)
+{
+    char *szCommand = "APACHE2 ";
+    int iCommandLen = 8;
+    char szcommandLine[256];
+    char *pID;
+    screenID = screenID;
+
+
+    if (commandLine == NULL)
+        return NOTMYCOMMAND;
+    if (strlen(commandLine) <= strlen(szCommand))
+        return NOTMYCOMMAND;
+
+    strncpy (szcommandLine, commandLine, sizeof(szcommandLine)-1);
+
+    /*  All added commands begin with "APACHE2 " */
+
+    if (!strnicmp(szCommand, szcommandLine, iCommandLen)) {
+        ActivateScreen (getscreenhandle());
+
+        /* If an instance id was not given but the nlm is loaded in 
+            protected space, then the the command belongs to the
+            OS address space instance to pass it on. */
+        pID = strstr (szcommandLine, "-p");
+        if ((pID == NULL) && nlmisloadedprotected())
+            return NOTMYCOMMAND;
+
+        /* If we got an instance id but it doesn't match this 
+            instance of the nlm, pass it on. */
+        if (pID) {
+            pID = &pID[2];
+            while (*pID && (*pID == ' '))
+                pID++;
+        }
+        if (pID && ap_my_addrspace && strnicmp(pID, ap_my_addrspace, strlen(ap_my_addrspace)))
+            return NOTMYCOMMAND;
+
+        /* If we have determined that this command belongs to this
+            instance of the nlm, then handle it. */
+        if (!strnicmp("RESTART",&szcommandLine[iCommandLen],3)) {
+            printf("Restart Requested...\n");
+            restart();
+        }
+        else if (!strnicmp("VERSION",&szcommandLine[iCommandLen],3)) {
+            printf("Server version: %s\n", ap_get_server_version());
+            printf("Server built:   %s\n", ap_get_server_built());
+        }
+        else if (!strnicmp("MODULES",&szcommandLine[iCommandLen],3)) {
+    	    ap_show_modules();
+        }
+        else if (!strnicmp("DIRECTIVES",&szcommandLine[iCommandLen],3)) {
+	        ap_show_directives();
+        }
+        else if (!strnicmp("SHUTDOWN",&szcommandLine[iCommandLen],3)) {
+            printf("Shutdown Requested...\n");
+            shutdown_pending = 1;
+        }
+        else if (!strnicmp("SETTINGS",&szcommandLine[iCommandLen],3)) {
+            if (show_settings) {
+                show_settings = 0;
+                ClearScreen (getscreenhandle());
+                show_server_data();
+            }
+            else {
+                show_settings = 1;
+                display_settings();
+            }
+        }
+        else {
+            show_settings = 0;
+            if (strnicmp("HELP",&szcommandLine[iCommandLen],3))
+                printf("Unknown APACHE2 command %s\n", &szcommandLine[iCommandLen]);
+            printf("Usage: APACHE2 [command] [-p <instance ID>]\n");
+            printf("Commands:\n");
+            printf("\tDIRECTIVES - Show directives\n");
+            printf("\tHELP       - Display this help information\n");
+            printf("\tMODULES    - Show a list of the loaded modules\n");
+            printf("\tRESTART    - Reread the configuration file and restart Apache\n");
+            printf("\tSETTINGS   - Show current thread status\n");
+            printf("\tSHUTDOWN   - Shutdown Apache\n");
+            printf("\tVERSION    - Display the server version information\n");
+        }
+
+        /*  Tell NetWare we handled the command */
+        return HANDLEDCOMMAND;
+    }
+
+    /*  Tell NetWare that the command isn't mine */
+    return NOTMYCOMMAND;
+}
+
+static int InstallConsoleHandler(void)
+{
+    /*  Our command line handler interfaces the system operator
+    with this NLM */
+
+    NX_WRAP_INTERFACE(CommandLineInterpreter, 2, (void*)&(ConsoleHandler.parser));
+
+    ConsoleHandler.rTag = AllocateResourceTag(getnlmhandle(), "Command Line Processor",
+        ConsoleCommandSignature);
+    if (!ConsoleHandler.rTag)
+    {
+        printf("Error on allocate resource tag\n");
+        return 1;
+    }
+
+    RegisterConsoleCommand(&ConsoleHandler);
+
+    /*  The Remove procedure unregisters the console handler */
+
+    return 0;
+}
+
+static void RemoveConsoleHandler(void)
+{
+    UnRegisterConsoleCommand(&ConsoleHandler);
+    NX_UNWRAP_INTERFACE(ConsoleHandler.parser);
+}
+
+static const char *set_threads_to_start(cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_to_start = atoi(arg);
+    return NULL;
+}
+
+static const char *set_min_free_threads(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_min_free = atoi(arg);
+    if (ap_threads_min_free <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareServers set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       ap_threads_min_free = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_free_threads(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_max_free = atoi(arg);
+    return NULL;
+}
+
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_limit = atoi(arg);
+    if (ap_threads_limit > HARD_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxThreads of %d exceeds compile time limit "
+                    "of %d threads,", ap_threads_limit, HARD_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering MaxThreads to %d.  To increase, please "
+                    "see the", HARD_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                    " HARD_THREAD_LIMIT define in %s.",
+                    AP_MPM_HARD_LIMITS_FILE);
+       ap_threads_limit = HARD_THREAD_LIMIT;
+    } 
+    else if (ap_threads_limit < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+            "WARNING: Require MaxThreads > 0, setting to 1");
+        ap_threads_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_thread_stacksize(cmd_parms *cmd, void *dummy, 
+                                        const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+    
+    ap_thread_stack_size = atoi(arg);
+    return NULL;
+}
+
+static const command_rec netware_mpm_cmds[] = {
+AP_INIT_TAKE1("ThreadStackSize", set_thread_stacksize, NULL, RSRC_CONF,
+              "Stack size each created thread will use."),
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("StartThreads", set_threads_to_start, NULL, RSRC_CONF,
+              "Number of worker threads launched at server startup"),
+AP_INIT_TAKE1("MinSpareThreads", set_min_free_threads, NULL, RSRC_CONF,
+              "Minimum number of idle threads, to handle request spikes"),
+AP_INIT_TAKE1("MaxSpareThreads", set_max_free_threads, NULL, RSRC_CONF,
+              "Maximum number of idle threads"),
+AP_INIT_TAKE1("MaxThreads", set_thread_limit, NULL, RSRC_CONF,
+              "Maximum number of worker threads alive at the same time"),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_netware_module = {
+    MPM20_MODULE_STUFF,
+    netware_rewrite_args,   /* hook to run before apache parses args */
+    NULL,			        /* create per-directory config structure */
+    NULL,			        /* merge per-directory config structures */
+    NULL,			        /* create per-server config structure */
+    NULL,			        /* merge per-server config structures */
+    netware_mpm_cmds,       /* command apr_table_t */
+    netware_mpm_hooks,      /* register hooks */
+};
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/prefork/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/prefork/Makefile.in
new file mode 100644
index 00000000..034bf5ce
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/prefork/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libprefork.la
+LTLIBRARY_SOURCES = prefork.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/prefork/config.m4 b/rubbos/app/httpd-2.0.64/server/mpm/prefork/config.m4
new file mode 100644
index 00000000..9c189a86
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/prefork/config.m4
@@ -0,0 +1,3 @@
+if test "$MPM_NAME" = "prefork" ; then
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_NAME/Makefile)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/prefork/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/prefork/mpm.h
new file mode 100644
index 00000000..51f810b3
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/prefork/mpm.h
@@ -0,0 +1,51 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "httpd.h"
+#include "mpm_default.h"
+#include "scoreboard.h"
+#include "unixd.h"
+
+#ifndef APACHE_MPM_PREFORK_H
+#define APACHE_MPM_PREFORK_H
+
+#define PREFORK_MPM
+
+#define MPM_NAME "Prefork"
+
+#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+#define AP_MPM_WANT_WAIT_OR_TIMEOUT
+#define AP_MPM_WANT_PROCESS_CHILD_STATUS
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_LOCKFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+#define AP_MPM_WANT_SIGNAL_SERVER
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+#define AP_MPM_WANT_FATAL_SIGNAL_HANDLER
+#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
+
+#define AP_MPM_USES_POD 1
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+#define MPM_ACCEPT_FUNC unixd_accept
+
+extern int ap_threads_per_child;
+extern int ap_max_daemons_limit;
+extern server_rec *ap_server_conf;
+#endif /* APACHE_MPM_PREFORK_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/prefork/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/prefork/mpm_default.h
new file mode 100644
index 00000000..8ddf38f0
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/prefork/mpm_default.h
@@ -0,0 +1,65 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of servers to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_DAEMON
+#define DEFAULT_START_DAEMON 5
+#endif
+
+/* Maximum number of *free* server processes --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_FREE_DAEMON
+#define DEFAULT_MAX_FREE_DAEMON 10
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_FREE_DAEMON
+#define DEFAULT_MIN_FREE_DAEMON 5
+#endif
+
+/* File used for accept locking, when we use a file */
+#ifndef DEFAULT_LOCKFILE
+#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/prefork/prefork.c b/rubbos/app/httpd-2.0.64/server/mpm/prefork/prefork.c
new file mode 100644
index 00000000..8667b4ab
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/prefork/prefork.c
@@ -0,0 +1,1355 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr.h"
+#include "apr_portable.h"
+#include "apr_strings.h"
+#include "apr_thread_proc.h"
+#include "apr_signal.h"
+
+#define APR_WANT_STDIO
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#define CORE_PRIVATE
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "mpm_default.h"
+#include "http_main.h"
+#include "http_log.h"
+#include "http_config.h"
+#include "http_core.h"		/* for get_remote_host */
+#include "http_connection.h"
+#include "scoreboard.h"
+#include "ap_mpm.h"
+#include "unixd.h"
+#include "mpm_common.h"
+#include "ap_listen.h"
+#include "ap_mmn.h"
+#include "apr_poll.h"
+
+#ifdef HAVE_BSTRING_H
+#include <bstring.h>		/* for IRIX, FD_SET calls bzero() */
+#endif
+#ifdef HAVE_TIME_H
+#include <time.h>
+#endif
+#ifdef HAVE_SYS_PROCESSOR_H
+#include <sys/processor.h> /* for bindprocessor() */
+#endif
+
+#include <signal.h>
+#include <sys/times.h>
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons --- first off,
+ * in case something goes seriously wrong, we want to stop the fork bomb
+ * short of actually crashing the machine we're running on by filling some
+ * kernel table.  Secondly, it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_SERVER_LIMIT
+#define DEFAULT_SERVER_LIMIT 256
+#endif
+
+/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_SERVER_LIMIT
+#define MAX_SERVER_LIMIT 20000
+#endif
+
+#ifndef HARD_THREAD_LIMIT
+#define HARD_THREAD_LIMIT 1
+#endif
+
+/* config globals */
+
+int ap_threads_per_child=0;         /* Worker threads per child */
+static apr_proc_mutex_t *accept_mutex;
+static int ap_daemons_to_start=0;
+static int ap_daemons_min_free=0;
+static int ap_daemons_max_free=0;
+static int ap_daemons_limit=0;      /* MaxClients */
+static int server_limit = DEFAULT_SERVER_LIMIT;
+static int first_server_limit;
+static int changed_limit_at_restart;
+static int mpm_state = AP_MPMQ_STARTING;
+static ap_pod_t *pod;
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts.  We 
+ * use this value to optimize routines that have to scan the entire scoreboard.
+ */
+int ap_max_daemons_limit = -1;
+server_rec *ap_server_conf;
+
+/* one_process --- debugging mode variable; can be set from the command line
+ * with the -X flag.  If set, this gets you the child_main loop running
+ * in the process which originally started up (no detach, no make_child),
+ * which is a pretty nice debugging environment.  (You'll get a SIGHUP
+ * early in standalone_main; just continue through.  This is the server
+ * trying to kill off any child processes which it might have lying
+ * around --- Apache doesn't keep track of their pids, it just sends
+ * SIGHUP to the process group, ignoring it in the root process.
+ * Continue through and you'll be fine.).
+ */
+
+static int one_process = 0;
+
+static apr_pool_t *pconf;		/* Pool for config stuff */
+static apr_pool_t *pchild;		/* Pool for httpd child stuff */
+
+static pid_t ap_my_pid;	/* it seems silly to call getpid all the time */
+static pid_t parent_pid;
+#ifndef MULTITHREAD
+static int my_child_num;
+#endif
+ap_generation_t volatile ap_my_generation=0;
+
+#ifdef TPF
+int tpf_child = 0;
+char tpf_server_name[INETD_SERVNAME_LENGTH+1];
+#endif /* TPF */
+
+static int die_now = 0;
+
+#ifdef GPROF
+/* 
+ * change directory for gprof to plop the gmon.out file
+ * configure in httpd.conf:
+ * GprofDir $RuntimeDir/   -> $ServerRoot/$RuntimeDir/gmon.out
+ * GprofDir $RuntimeDir/%  -> $ServerRoot/$RuntimeDir/gprof.$pid/gmon.out
+ */
+static void chdir_for_gprof(void)
+{
+    core_server_config *sconf = 
+	ap_get_module_config(ap_server_conf->module_config, &core_module);    
+    char *dir = sconf->gprof_dir;
+    const char *use_dir;
+
+    if(dir) {
+        apr_status_t res;
+	char buf[512];
+	int len = strlen(sconf->gprof_dir) - 1;
+	if(*(dir + len) == '%') {
+	    dir[len] = '\0';
+	    apr_snprintf(buf, sizeof(buf), "%sgprof.%d", dir, (int)getpid());
+	} 
+	use_dir = ap_server_root_relative(pconf, buf[0] ? buf : dir);
+	res = apr_dir_make(use_dir, 0755, pconf);
+	if(res != APR_SUCCESS && !APR_STATUS_IS_EEXIST(res)) {
+	    ap_log_error(APLOG_MARK, APLOG_ERR, errno, ap_server_conf,
+			 "gprof: error creating directory %s", dir);
+	}
+    }
+    else {
+	use_dir = ap_server_root_relative(pconf, DEFAULT_REL_RUNTIMEDIR);
+    }
+
+    chdir(use_dir);
+}
+#else
+#define chdir_for_gprof()
+#endif
+
+/* XXX - I don't know if TPF will ever use this module or not, so leave
+ * the ap_check_signals calls in but disable them - manoj */
+#define ap_check_signals() 
+
+/* a clean exit from a child with proper cleanup */
+static void clean_child_exit(int code) __attribute__ ((noreturn));
+static void clean_child_exit(int code)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+
+    if (pchild) {
+	apr_pool_destroy(pchild);
+    }
+    ap_mpm_pod_close(pod);
+    chdir_for_gprof();
+    exit(code);
+}
+
+static void accept_mutex_on(void)
+{
+    apr_status_t rv = apr_proc_mutex_lock(accept_mutex);
+    if (rv != APR_SUCCESS) {
+        const char *msg = "couldn't grab the accept mutex";
+
+        if (ap_my_generation != 
+            ap_scoreboard_image->global->running_generation) {
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL, msg);
+            clean_child_exit(0);
+        }
+        else {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, msg);
+            exit(APEXIT_CHILDFATAL);
+        }
+    }
+}
+
+static void accept_mutex_off(void)
+{
+    apr_status_t rv = apr_proc_mutex_unlock(accept_mutex);
+    if (rv != APR_SUCCESS) {
+        const char *msg = "couldn't release the accept mutex";
+
+        if (ap_my_generation != 
+            ap_scoreboard_image->global->running_generation) {
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, rv, NULL, msg);
+            /* don't exit here... we have a connection to
+             * process, after which point we'll see that the
+             * generation changed and we'll exit cleanly
+             */
+        }
+        else {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, NULL, msg);
+            exit(APEXIT_CHILDFATAL);
+        }
+    }
+}
+
+/* On some architectures it's safe to do unserialized accept()s in the single
+ * Listen case.  But it's never safe to do it in the case where there's
+ * multiple Listen statements.  Define SINGLE_LISTEN_UNSERIALIZED_ACCEPT
+ * when it's safe in the single Listen case.
+ */
+#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
+#define SAFE_ACCEPT(stmt) do {if (ap_listeners->next) {stmt;}} while(0)
+#else
+#define SAFE_ACCEPT(stmt) do {stmt;} while(0)
+#endif
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = server_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = HARD_THREAD_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = ap_daemons_min_free;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = ap_daemons_max_free;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = server_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+#if defined(NEED_WAITPID)
+/*
+   Systems without a real waitpid sometimes lose a child's exit while waiting
+   for another.  Search through the scoreboard for missing children.
+ */
+int reap_children(int *exitcode, apr_exit_why_e *status)
+{
+    int n, pid;
+
+    for (n = 0; n < ap_max_daemons_limit; ++n) {
+	if (ap_scoreboard_image->servers[n][0].status != SERVER_DEAD &&
+		kill((pid = ap_scoreboard_image->parent[n].pid), 0) == -1) {
+	    ap_update_child_status_from_indexes(n, 0, SERVER_DEAD, NULL);
+	    /* just mark it as having a successful exit status */
+            *status = APR_PROC_EXIT;
+            *exitcode = 0;
+	    return(pid);
+	}
+    }
+    return 0;
+}
+#endif
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+static void just_die(int sig)
+{
+    clean_child_exit(0);
+}
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+
+static void sig_term(int sig)
+{
+    if (shutdown_pending == 1) {
+	/* Um, is this _probably_ not an error, if the user has
+	 * tried to do a shutdown twice quickly, so we won't
+	 * worry about reporting it.
+	 */
+	return;
+    }
+    shutdown_pending = 1;
+}
+
+/* restart() is the signal handler for SIGHUP and AP_SIG_GRACEFUL
+ * in the parent process, unless running in ONE_PROCESS mode
+ */
+static void restart(int sig)
+{
+    if (restart_pending == 1) {
+	/* Probably not an error - don't bother reporting it */
+	return;
+    }
+    restart_pending = 1;
+    is_graceful = (sig == AP_SIG_GRACEFUL);
+}
+
+static void set_signals(void)
+{
+#ifndef NO_USE_SIGACTION
+    struct sigaction sa;
+#endif
+
+    if (!one_process) {
+        ap_fatal_signal_setup(ap_server_conf, pconf);
+    }
+
+#ifndef NO_USE_SIGACTION
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+
+    sa.sa_handler = sig_term;
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");
+#ifdef SIGINT
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)");
+#endif
+#ifdef SIGXCPU
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXCPU, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXCPU)");
+#endif
+#ifdef SIGXFSZ
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXFSZ, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGXFSZ)");
+#endif
+#ifdef SIGPIPE
+    sa.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGPIPE)");
+#endif
+
+    /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy 
+     * processing one */
+    sigaddset(&sa.sa_mask, SIGHUP);
+    sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
+    sa.sa_handler = restart;
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+	ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");
+    if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(" AP_SIG_GRACEFUL_STRING ")");
+#else
+    if (!one_process) {
+#ifdef SIGXCPU
+	apr_signal(SIGXCPU, SIG_DFL);
+#endif /* SIGXCPU */
+#ifdef SIGXFSZ
+	apr_signal(SIGXFSZ, SIG_DFL);
+#endif /* SIGXFSZ */
+    }
+
+    apr_signal(SIGTERM, sig_term);
+#ifdef SIGHUP
+    apr_signal(SIGHUP, restart);
+#endif /* SIGHUP */
+#ifdef AP_SIG_GRACEFUL
+    apr_signal(AP_SIG_GRACEFUL, restart);
+#endif /* AP_SIG_GRACEFUL */
+#ifdef SIGPIPE
+    apr_signal(SIGPIPE, SIG_IGN);
+#endif /* SIGPIPE */
+
+#endif
+}
+
+/*****************************************************************
+ * Child process main loop.
+ * The following vars are static to avoid getting clobbered by longjmp();
+ * they are really private to child_main.
+ */
+
+static int requests_this_child;
+static int num_listensocks = 0;
+static ap_listen_rec *listensocks;
+
+int ap_graceful_stop_signalled(void)
+{
+    /* not ever called anymore... */
+    return 0;
+}
+
+
+static void child_main(int child_num_arg)
+{
+    apr_pool_t *ptrans;
+    apr_allocator_t *allocator;
+    conn_rec *current_conn;
+    apr_status_t status = APR_EINIT;
+    int i;
+    ap_listen_rec *lr;
+    int curr_pollfd, last_pollfd = 0;
+    apr_pollfd_t *pollset;
+    int offset;
+    void *csd;
+    ap_sb_handle_t *sbh;
+    apr_status_t rv;
+    apr_bucket_alloc_t *bucket_alloc;
+
+    mpm_state = AP_MPMQ_STARTING; /* for benefit of any hooks that run as this
+                                  * child initializes
+                                  */
+    
+    my_child_num = child_num_arg;
+    ap_my_pid = getpid();
+    csd = NULL;
+    requests_this_child = 0;
+
+    ap_fatal_signal_child_setup(ap_server_conf);
+
+    /* Get a sub context for global allocations in this child, so that
+     * we can have cleanups occur when the child exits.
+     */
+    apr_allocator_create(&allocator);
+    apr_allocator_max_free_set(allocator, ap_max_mem_free);
+    apr_pool_create_ex(&pchild, pconf, NULL, allocator);
+    apr_allocator_owner_set(allocator, pchild);
+
+    apr_pool_create(&ptrans, pchild);
+    apr_pool_tag(ptrans, "transaction");
+
+    /* needs to be done before we switch UIDs so we have permissions */
+    ap_reopen_scoreboard(pchild, NULL, 0);
+    rv = apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize cross-process lock in child");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (unixd_setup_child()) {
+	clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_run_child_init(pchild, ap_server_conf);
+
+    ap_create_sb_handle(&sbh, pchild, my_child_num, 0);
+
+    (void) ap_update_child_status(sbh, SERVER_READY, (request_rec *) NULL);
+
+    /* Set up the pollfd array */
+    listensocks = apr_pcalloc(pchild,
+                            sizeof(*listensocks) * (num_listensocks));
+    for (lr = ap_listeners, i = 0; i < num_listensocks; lr = lr->next, i++) {
+        listensocks[i].accept_func = lr->accept_func;
+        listensocks[i].sd = lr->sd;
+    }
+
+    pollset = apr_palloc(pchild, sizeof(*pollset) * num_listensocks);
+    pollset[0].p = pchild;
+    for (i = 0; i < num_listensocks; i++) {
+        pollset[i].desc.s = listensocks[i].sd;
+        pollset[i].desc_type = APR_POLL_SOCKET;
+        pollset[i].reqevents = APR_POLLIN;
+    }
+
+    mpm_state = AP_MPMQ_RUNNING;
+    
+    bucket_alloc = apr_bucket_alloc_create(pchild);
+
+    while (!die_now) {
+	/*
+	 * (Re)initialize this child to a pre-connection state.
+	 */
+
+	current_conn = NULL;
+
+	apr_pool_clear(ptrans);
+
+	if ((ap_max_requests_per_child > 0
+	     && requests_this_child++ >= ap_max_requests_per_child)) {
+	    clean_child_exit(0);
+	}
+
+	(void) ap_update_child_status(sbh, SERVER_READY, (request_rec *) NULL);
+
+	/*
+	 * Wait for an acceptable connection to arrive.
+	 */
+
+	/* Lock around "accept", if necessary */
+	SAFE_ACCEPT(accept_mutex_on());
+
+        if (num_listensocks == 1) {
+            offset = 0;
+        }
+        else {
+            /* multiple listening sockets - need to poll */
+	    for (;;) {
+                apr_status_t ret;
+                apr_int32_t n;
+
+                ret = apr_poll(pollset, num_listensocks, &n, -1);
+                if (ret != APR_SUCCESS) {
+                    if (APR_STATUS_IS_EINTR(ret)) {
+                        continue;
+                    }
+    	            /* Single Unix documents select as returning errnos
+    	             * EBADF, EINTR, and EINVAL... and in none of those
+    	             * cases does it make sense to continue.  In fact
+    	             * on Linux 2.0.x we seem to end up with EFAULT
+    	             * occasionally, and we'd loop forever due to it.
+    	             */
+    	            ap_log_error(APLOG_MARK, APLOG_ERR, ret, ap_server_conf,
+                             "apr_poll: (listen)");
+    	            clean_child_exit(1);
+                }
+                /* find a listener */
+                curr_pollfd = last_pollfd;
+                do {
+                    curr_pollfd++;
+                    if (curr_pollfd >= num_listensocks) {
+                        curr_pollfd = 0;
+                    }
+                    /* XXX: Should we check for POLLERR? */
+                    if (pollset[curr_pollfd].rtnevents & APR_POLLIN) {
+                        last_pollfd = curr_pollfd;
+                        offset = curr_pollfd;
+                        goto got_fd;
+                    }
+                } while (curr_pollfd != last_pollfd);
+
+                continue;
+            }
+        }
+    got_fd:
+	/* if we accept() something we don't want to die, so we have to
+	 * defer the exit
+	 */
+        status = listensocks[offset].accept_func(&csd, 
+                                                 &listensocks[offset], ptrans);
+        SAFE_ACCEPT(accept_mutex_off());	/* unlock after "accept" */
+
+        if (status == APR_EGENERAL) {
+            /* resource shortage or should-not-occur occured */
+            clean_child_exit(1);
+        }
+        else if (status != APR_SUCCESS) {
+            continue;
+        }
+
+	/*
+	 * We now have a connection, so set it up with the appropriate
+	 * socket options, file descriptors, and read/write buffers.
+	 */
+
+	current_conn = ap_run_create_connection(ptrans, ap_server_conf, csd, my_child_num, sbh, bucket_alloc);
+        if (current_conn) {
+            ap_process_connection(current_conn, csd);
+            ap_lingering_close(current_conn);
+        }
+        
+        /* Check the pod and the generation number after processing a
+         * connection so that we'll go away if a graceful restart occurred
+         * while we were processing the connection or we are the lucky
+         * idle server process that gets to die.
+         */
+        if (ap_mpm_pod_check(pod) == APR_SUCCESS) { /* selected as idle? */
+            die_now = 1;
+        }
+        else if (ap_my_generation !=
+                 ap_scoreboard_image->global->running_generation) { /* restart? */
+            /* yeah, this could be non-graceful restart, in which case the
+             * parent will kill us soon enough, but why bother checking?
+             */
+            die_now = 1;
+        }
+    }
+    clean_child_exit(0);
+}
+
+
+static int make_child(server_rec *s, int slot)
+{
+    int pid;
+
+    if (slot + 1 > ap_max_daemons_limit) {
+	ap_max_daemons_limit = slot + 1;
+    }
+
+    if (one_process) {
+	apr_signal(SIGHUP, just_die);
+        /* Don't catch AP_SIG_GRACEFUL in ONE_PROCESS mode :) */
+	apr_signal(SIGINT, just_die);
+#ifdef SIGQUIT
+	apr_signal(SIGQUIT, SIG_DFL);
+#endif
+	apr_signal(SIGTERM, just_die);
+	child_main(slot);
+    }
+
+    (void) ap_update_child_status_from_indexes(slot, 0, SERVER_STARTING,
+                                               (request_rec *) NULL);
+
+
+#ifdef _OSD_POSIX
+    /* BS2000 requires a "special" version of fork() before a setuid() call */
+    if ((pid = os_fork(unixd_config.user_name)) == -1) {
+#elif defined(TPF)
+    if ((pid = os_fork(s, slot)) == -1) {
+#else
+    if ((pid = fork()) == -1) {
+#endif
+	ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, "fork: Unable to fork new process");
+
+	/* fork didn't succeed. Fix the scoreboard or else
+	 * it will say SERVER_STARTING forever and ever
+	 */
+	(void) ap_update_child_status_from_indexes(slot, 0, SERVER_DEAD,
+                                                   (request_rec *) NULL);
+
+	/* In case system resources are maxxed out, we don't want
+	   Apache running away with the CPU trying to fork over and
+	   over and over again. */
+	sleep(10);
+
+	return -1;
+    }
+
+    if (!pid) {
+#ifdef HAVE_BINDPROCESSOR
+        /* by default AIX binds to a single processor
+         * this bit unbinds children which will then bind to another cpu
+         */
+	int status = bindprocessor(BINDPROCESS, (int)getpid(), 
+				   PROCESSOR_CLASS_ANY);
+	if (status != OK) {
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, 
+                         ap_server_conf, "processor unbind failed %d", status);
+	}
+#endif
+	RAISE_SIGSTOP(MAKE_CHILD);
+        AP_MONCONTROL(1);
+        /* Disable the parent's signal handlers and set up proper handling in
+         * the child.
+	 */
+	apr_signal(SIGHUP, just_die);
+	apr_signal(SIGTERM, just_die);
+        /* The child process doesn't do anything for AP_SIG_GRACEFUL.  
+         * Instead, the pod is used for signalling graceful restart.
+         */
+        apr_signal(AP_SIG_GRACEFUL, SIG_IGN);
+	child_main(slot);
+    }
+
+    ap_scoreboard_image->parent[slot].pid = pid;
+
+    return 0;
+}
+
+
+/* start up a bunch of children */
+static void startup_children(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < ap_daemons_limit; ++i) {
+	if (ap_scoreboard_image->servers[i][0].status != SERVER_DEAD) {
+	    continue;
+	}
+	if (make_child(ap_server_conf, i) < 0) {
+	    break;
+	}
+	--number_to_start;
+    }
+}
+
+
+/*
+ * idle_spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough idle servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int idle_spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE	(32)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_idle_server_maintenance(apr_pool_t *p)
+{
+    int i;
+    int to_kill;
+    int idle_count;
+    worker_score *ws;
+    int free_length;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead;
+    int total_non_dead;
+
+    /* initialize the free_list */
+    free_length = 0;
+
+    to_kill = -1;
+    idle_count = 0;
+    last_non_dead = -1;
+    total_non_dead = 0;
+
+    for (i = 0; i < ap_daemons_limit; ++i) {
+	int status;
+
+	if (i >= ap_max_daemons_limit && free_length == idle_spawn_rate)
+	    break;
+	ws = &ap_scoreboard_image->servers[i][0];
+	status = ws->status;
+	if (status == SERVER_DEAD) {
+	    /* try to keep children numbers as low as possible */
+	    if (free_length < idle_spawn_rate) {
+		free_slots[free_length] = i;
+		++free_length;
+	    }
+	}
+	else {
+	    /* We consider a starting server as idle because we started it
+	     * at least a cycle ago, and if it still hasn't finished starting
+	     * then we're just going to swamp things worse by forking more.
+	     * So we hopefully won't need to fork more if we count it.
+	     * This depends on the ordering of SERVER_READY and SERVER_STARTING.
+	     */
+	    if (status <= SERVER_READY) {
+		++ idle_count;
+		/* always kill the highest numbered child if we have to...
+		 * no really well thought out reason ... other than observing
+		 * the server behaviour under linux where lower numbered children
+		 * tend to service more hits (and hence are more likely to have
+		 * their data in cpu caches).
+		 */
+		to_kill = i;
+	    }
+
+	    ++total_non_dead;
+	    last_non_dead = i;
+	}
+    }
+    ap_max_daemons_limit = last_non_dead + 1;
+    if (idle_count > ap_daemons_max_free) {
+	/* kill off one child... we use the pod because that'll cause it to
+	 * shut down gracefully, in case it happened to pick up a request
+	 * while we were counting
+	 */
+	ap_mpm_pod_signal(pod);
+	idle_spawn_rate = 1;
+    }
+    else if (idle_count < ap_daemons_min_free) {
+	/* terminate the free list */
+	if (free_length == 0) {
+	    /* only report this condition once */
+	    static int reported = 0;
+
+	    if (!reported) {
+		ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf,
+			    "server reached MaxClients setting, consider"
+			    " raising the MaxClients setting");
+		reported = 1;
+	    }
+	    idle_spawn_rate = 1;
+	}
+	else {
+	    if (idle_spawn_rate >= 8) {
+		ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+		    "server seems busy, (you may need "
+		    "to increase StartServers, or Min/MaxSpareServers), "
+		    "spawning %d children, there are %d idle, and "
+		    "%d total children", idle_spawn_rate,
+		    idle_count, total_non_dead);
+	    }
+	    for (i = 0; i < free_length; ++i) {
+#ifdef TPF
+        if (make_child(ap_server_conf, free_slots[i]) == -1) {
+            if(free_length == 1) {
+                shutdown_pending = 1;
+                ap_log_error(APLOG_MARK, APLOG_EMERG, 0, ap_server_conf,
+                "No active child processes: shutting down");
+            }
+        }
+#else
+		make_child(ap_server_conf, free_slots[i]);
+#endif /* TPF */
+	    }
+	    /* the next time around we want to spawn twice as many if this
+	     * wasn't good enough, but not if we've just done a graceful
+	     */
+	    if (hold_off_on_exponential_spawning) {
+		--hold_off_on_exponential_spawning;
+	    }
+	    else if (idle_spawn_rate < MAX_SPAWN_RATE) {
+		idle_spawn_rate *= 2;
+	    }
+	}
+    }
+    else {
+	idle_spawn_rate = 1;
+    }
+}
+
+/*****************************************************************
+ * Executive routines.
+ */
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    int index;
+    int remaining_children_to_start;
+    apr_status_t rv;
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    first_server_limit = server_limit;
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "WARNING: Attempt to change ServerLimit "
+                     "ignored during restart");
+        changed_limit_at_restart = 0;
+    }
+
+    /* Initialize cross-process accept lock */
+    ap_lock_fname = apr_psprintf(_pconf, "%s.%" APR_PID_T_FMT,
+                                 ap_server_root_relative(_pconf, ap_lock_fname),
+                                 ap_my_pid);
+
+    rv = apr_proc_mutex_create(&accept_mutex, ap_lock_fname, 
+                               ap_accept_lock_mech, _pconf);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create accept lock");
+        mpm_state = AP_MPMQ_STOPPING;
+        return 1;
+    }
+
+#if APR_USE_SYSVSEM_SERIALIZE
+    if (ap_accept_lock_mech == APR_LOCK_DEFAULT || 
+        ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#else
+    if (ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#endif
+        rv = unixd_set_proc_mutex_perms(accept_mutex);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                         "Couldn't set permissions on cross-process lock; "
+                         "check User and Group directives");
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+    }
+
+    if (!is_graceful) {
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+        /* fix the generation number in the global score; we just got a new,
+         * cleared scoreboard
+         */
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+    }
+
+    set_signals();
+
+    if (one_process) {
+        AP_MONCONTROL(1);
+    }
+
+    if (ap_daemons_max_free < ap_daemons_min_free + 1)	/* Don't thrash... */
+	ap_daemons_max_free = ap_daemons_min_free + 1;
+
+    /* If we're doing a graceful_restart then we're going to see a lot
+	* of children exiting immediately when we get into the main loop
+	* below (because we just sent them AP_SIG_GRACEFUL).  This happens pretty
+	* rapidly... and for each one that exits we'll start a new one until
+	* we reach at least daemons_min_free.  But we may be permitted to
+	* start more than that, so we'll just keep track of how many we're
+	* supposed to start up without the 1 second penalty between each fork.
+	*/
+    remaining_children_to_start = ap_daemons_to_start;
+    if (remaining_children_to_start > ap_daemons_limit) {
+	remaining_children_to_start = ap_daemons_limit;
+    }
+    if (!is_graceful) {
+	startup_children(remaining_children_to_start);
+	remaining_children_to_start = 0;
+    }
+    else {
+	/* give the system some time to recover before kicking into
+	    * exponential mode */
+	hold_off_on_exponential_spawning = 10;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		"%s configured -- resuming normal operations",
+		ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+		"Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+		"AcceptMutex: %s (default: %s)",
+		apr_proc_mutex_name(accept_mutex),
+		apr_proc_mutex_defname());
+#endif
+    restart_pending = shutdown_pending = 0;
+
+    mpm_state = AP_MPMQ_RUNNING;
+    
+    while (!restart_pending && !shutdown_pending) {
+	int child_slot;
+        apr_exit_why_e exitwhy;
+	int status, processed_status;
+        /* this is a memory leak, but I'll fix it later. */
+	apr_proc_t pid;
+
+        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
+
+	/* XXX: if it takes longer than 1 second for all our children
+	 * to start up and get into IDLE state then we may spawn an
+	 * extra child
+	 */
+	if (pid.pid != -1) {
+            processed_status = ap_process_child_status(&pid, exitwhy, status);
+            if (processed_status == APEXIT_CHILDFATAL) {
+                mpm_state = AP_MPMQ_STOPPING;
+                return 1;
+            }
+
+	    /* non-fatal death... note that it's gone in the scoreboard. */
+	    child_slot = find_child_by_pid(&pid);
+	    if (child_slot >= 0) {
+		(void) ap_update_child_status_from_indexes(child_slot, 0, SERVER_DEAD,
+                                                           (request_rec *) NULL);
+                if (processed_status == APEXIT_CHILDSICK) {
+                    /* child detected a resource shortage (E[NM]FILE, ENOBUFS, etc)
+                     * cut the fork rate to the minimum 
+                     */
+                    idle_spawn_rate = 1; 
+                }
+                else if (remaining_children_to_start
+		    && child_slot < ap_daemons_limit) {
+		    /* we're still doing a 1-for-1 replacement of dead
+			* children with new children
+			*/
+		    make_child(ap_server_conf, child_slot);
+		    --remaining_children_to_start;
+		}
+#if APR_HAS_OTHER_CHILD
+	    }
+	    else if (apr_proc_other_child_read(&pid, status) == 0) {
+		/* handled */
+#endif
+	    }
+	    else if (is_graceful) {
+		/* Great, we've probably just lost a slot in the
+		    * scoreboard.  Somehow we don't know about this
+		    * child.
+		    */
+		ap_log_error(APLOG_MARK, APLOG_WARNING, 
+                            0, ap_server_conf,
+			    "long lost child came home! (pid %ld)", (long)pid.pid);
+	    }
+	    /* Don't perform idle maintenance when a child dies,
+		* only do it when there's a timeout.  Remember only a
+		* finite number of children can die, and it's pretty
+		* pathological for a lot to die suddenly.
+		*/
+	    continue;
+	}
+	else if (remaining_children_to_start) {
+	    /* we hit a 1 second timeout in which none of the previous
+		* generation of children needed to be reaped... so assume
+		* they're all done, and pick up the slack if any is left.
+		*/
+	    startup_children(remaining_children_to_start);
+	    remaining_children_to_start = 0;
+	    /* In any event we really shouldn't do the code below because
+		* few of the servers we just started are in the IDLE state
+		* yet, so we'd mistakenly create an extra server.
+		*/
+	    continue;
+	}
+
+	perform_idle_server_maintenance(pconf);
+#ifdef TPF
+    shutdown_pending = os_check_server(tpf_server_name);
+    ap_check_signals();
+    sleep(1);
+#endif /*TPF */
+    }
+
+    mpm_state = AP_MPMQ_STOPPING;
+
+    if (shutdown_pending) {
+	/* Time to gracefully shut down:
+	 * Kill child processes, tell them to call child_exit, etc...
+	 */
+	if (unixd_killpg(getpgrp(), SIGTERM) < 0) {
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGTERM");
+	}
+	ap_reclaim_child_processes(1);		/* Start with SIGTERM */
+
+	/* cleanup pid file on normal shutdown */
+	{
+	    const char *pidfile = NULL;
+	    pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+	    if ( pidfile != NULL && unlink(pidfile) == 0)
+		ap_log_error(APLOG_MARK, APLOG_INFO,
+				0, ap_server_conf,
+				"removed PID file %s (pid=%ld)",
+				pidfile, (long)getpid());
+	}
+
+	ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		    "caught SIGTERM, shutting down");
+	return 1;
+    }
+
+    /* we've been told to restart */
+    apr_signal(SIGHUP, SIG_IGN);
+    if (one_process) {
+	/* not worth thinking about */
+	return 1;
+    }
+
+    /* advance to the next generation */
+    /* XXX: we really need to make sure this new generation number isn't in
+     * use by any of the children.
+     */
+    ++ap_my_generation;
+    ap_scoreboard_image->global->running_generation = ap_my_generation;
+    
+    if (is_graceful) {
+	ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		    "Graceful restart requested, doing restart");
+
+	/* kill off the idle ones */
+        ap_mpm_pod_killpg(pod, ap_max_daemons_limit);
+
+	/* This is mostly for debugging... so that we know what is still
+	    * gracefully dealing with existing request.  This will break
+	    * in a very nasty way if we ever have the scoreboard totally
+	    * file-based (no shared memory)
+	    */
+	for (index = 0; index < ap_daemons_limit; ++index) {
+	    if (ap_scoreboard_image->servers[index][0].status != SERVER_DEAD) {
+		ap_scoreboard_image->servers[index][0].status = SERVER_GRACEFUL;
+	    }
+	}
+    }
+    else {
+	/* Kill 'em off */
+	if (unixd_killpg(getpgrp(), SIGHUP) < 0) {
+	    ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "killpg SIGHUP");
+	}
+	ap_reclaim_child_processes(0);		/* Not when just starting up */
+	ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+		    "SIGHUP received.  Attempting to restart");
+    }
+
+    return 0;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int prefork_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    apr_status_t rv;
+
+    pconf = p;
+    ap_server_conf = s;
+
+    if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, 
+                     NULL, "no listening sockets available, shutting down");
+	return DONE;
+    }
+
+    if ((rv = ap_mpm_pod_open(pconf, &pod))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
+		"Could not open pipe-of-death.");
+        return DONE;
+    }
+    return OK;
+}
+
+static int prefork_pre_config(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp)
+{
+    static int restart_num = 0;
+    int no_detach, debug, foreground;
+    apr_status_t rv;
+
+    mpm_state = AP_MPMQ_STARTING;
+
+    debug = ap_exists_config_define("DEBUG");
+
+    if (debug) {
+        foreground = one_process = 1;
+        no_detach = 0;
+    }
+    else
+    {
+        no_detach = ap_exists_config_define("NO_DETACH");
+        one_process = ap_exists_config_define("ONE_PROCESS");
+        foreground = ap_exists_config_define("FOREGROUND");
+    }
+
+    /* sigh, want this only the second time around */
+    if (restart_num++ == 1) {
+	is_graceful = 0;
+
+        if (!one_process && !foreground) {
+            rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
+                                           : APR_PROC_DETACH_DAEMONIZE);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                             "apr_proc_detach failed");
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+        }
+
+	parent_pid = ap_my_pid = getpid();
+    }
+
+    unixd_pre_config(ptemp);
+    ap_listen_pre_config();
+    ap_daemons_to_start = DEFAULT_START_DAEMON;
+    ap_daemons_min_free = DEFAULT_MIN_FREE_DAEMON;
+    ap_daemons_max_free = DEFAULT_MAX_FREE_DAEMON;
+    ap_daemons_limit = server_limit;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_lock_fname = DEFAULT_LOCKFILE;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    ap_extended_status = 0;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    return OK;
+}
+
+static void prefork_hooks(apr_pool_t *p)
+{
+    /* The prefork open_logs phase must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+
+#ifdef AUX3
+    (void) set42sig();
+#endif
+
+    ap_hook_open_logs(prefork_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+    /* we need to set the MPM state before other pre-config hooks use MPM query
+     * to retrieve it, so register as REALLY_FIRST
+     */
+    ap_hook_pre_config(prefork_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
+}
+
+static const char *set_daemons_to_start(cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_to_start = atoi(arg);
+    return NULL;
+}
+
+static const char *set_min_free_servers(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_min_free = atoi(arg);
+    if (ap_daemons_min_free <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareServers set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       ap_daemons_min_free = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_free_servers(cmd_parms *cmd, void *dummy, const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_max_free = atoi(arg);
+    return NULL;
+}
+
+static const char *set_max_clients (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_limit = atoi(arg);
+    if (ap_daemons_limit > server_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients of %d exceeds ServerLimit value "
+                    "of %d servers,", ap_daemons_limit, server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering MaxClients to %d.  To increase, please "
+                    "see the ServerLimit", server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                    " directive.");
+       ap_daemons_limit = server_limit;
+    } 
+    else if (ap_daemons_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require MaxClients > 0, setting to 1");
+	ap_daemons_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_server_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_server_limit = atoi(arg);
+    /* you cannot change ServerLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_server_limit &&
+        tmp_server_limit != server_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    server_limit = tmp_server_limit;
+    
+    if (server_limit > MAX_SERVER_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ServerLimit of %d exceeds compile time limit "
+                    "of %d servers,", server_limit, MAX_SERVER_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
+       server_limit = MAX_SERVER_LIMIT;
+    } 
+    else if (server_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ServerLimit > 0, setting to 1");
+	server_limit = 1;
+    }
+    return NULL;
+}
+
+static const command_rec prefork_cmds[] = {
+UNIX_DAEMON_COMMANDS,
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("StartServers", set_daemons_to_start, NULL, RSRC_CONF,
+              "Number of child processes launched at server startup"),
+AP_INIT_TAKE1("MinSpareServers", set_min_free_servers, NULL, RSRC_CONF,
+              "Minimum number of idle children, to handle request spikes"),
+AP_INIT_TAKE1("MaxSpareServers", set_max_free_servers, NULL, RSRC_CONF,
+              "Maximum number of idle children"),
+AP_INIT_TAKE1("MaxClients", set_max_clients, NULL, RSRC_CONF,
+              "Maximum number of children alive at the same time"),
+AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF,
+              "Maximum value of MaxClients for this run of Apache"),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_prefork_module = {
+    MPM20_MODULE_STUFF,
+    ap_mpm_rewrite_args,        /* hook to run before apache parses args */
+    NULL,			/* create per-directory config structure */
+    NULL,			/* merge per-directory config structures */
+    NULL,			/* create per-server config structure */
+    NULL,			/* merge per-server config structures */
+    prefork_cmds,		/* command apr_table_t */
+    prefork_hooks,		/* register hooks */
+};
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.c b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.c
new file mode 100644
index 00000000..a352dd1b
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.c
@@ -0,0 +1,697 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifdef WIN32
+
+/*
+ * Win9xConHook.dll - a hook proc to clean up Win95/98 console behavior.
+ *
+ * It is well(?) documented by Microsoft that the Win9x HandlerRoutine
+ * hooked by the SetConsoleCtrlHandler never receives the CTRL_CLOSE_EVENT,
+ * CTRL_LOGOFF_EVENT or CTRL_SHUTDOWN_EVENT signals.  
+ *
+ * It is possible to have a second window to monitor the WM_ENDSESSION 
+ * message, but the close button still fails..
+ * 
+ * There is a 16bit polling method for the close window option, but this
+ * is CPU intensive and requires thunking.
+ *
+ * Attempts to subclass the 'tty' console fail, since that message thread
+ * is actually owned by the 16 bit winoldap.mod process, although the 
+ * window reports it is owned by the process/thread of the console app.
+ *
+ * Win9xConHook is thunks the WM_CLOSE and WM_ENDSESSION messages,
+ * first through a window hook procedure in the winoldap context, into
+ * a subclass WndProc, and on to a second hidden monitor window in the
+ * console application's context that dispatches them to the console app's
+ * registered HandlerRoutine.
+ */
+
+/* This debugging define turns on output to COM1, although you better init
+ * the port first (even using hyperterm).  It's the only way to catch the
+ * goings on within system logoff/shutdown.
+ * #define DBG 1
+ */
+
+#include <windows.h>
+
+/* Variables used within any process context:
+ *  hookwndmsg is a shared message to send Win9xConHook signals
+ *  origwndprop is a wndprop atom to store the orig wndproc of the tty
+ *  hookwndprop is a wndprop atom to store the hwnd of the hidden child
+ *  is_service reminds us to unmark this process on the way out
+ */
+static UINT hookwndmsg = 0;
+static LPCTSTR origwndprop;
+static LPCTSTR hookwndprop;
+static BOOL is_service = 0;
+//static HMODULE hmodThis = NULL;
+
+/* Variables used within the tty processes' context:
+ *  is_tty flags this process;  -1 == unknown, 1 == if tty, 0 == if not
+ *  hw_tty is the handle of the top level tty in this process context
+ *  is_subclassed is toggled to assure DllMain removes the subclass on unload
+ *  hmodLock is there to try and prevent this dll from being unloaded if the
+ *           hook is removed while we are subclassed
+ */
+static int is_tty = -1;
+static HWND hwtty = NULL;
+static BOOL is_subclassed = 0;
+
+// This simply causes a gpfault the moment it tries to FreeLibrary within
+// the subclass procedure ... not good.
+//static HMODULE hmodLock = NULL;
+
+/* Variables used within the service or console app's context:
+ *  hmodHook is the instance handle of this module for registering the hooks
+ *  hhkGetMessage is the hook handle for catching Posted messages
+ *  hhkGetMessage is the hook handle for catching Sent messages
+ *  monitor_hwnd is the invisible window that handles our tty messages
+ *  the tty_info strucure is used to pass args into the hidden window's thread
+ */
+static HMODULE hmodHook = NULL;
+static HHOOK hhkGetMessage;
+//static HHOOK hhkCallWndProc;
+static HWND monitor_hwnd = NULL;
+
+typedef struct {
+    PHANDLER_ROUTINE phandler;
+    HINSTANCE instance;
+    HWND parent;
+    INT type;
+    LPCSTR name;
+} tty_info;
+
+/* These are the GetWindowLong offsets for the hidden window's internal info
+ *  gwltty_phandler is the address of the app's HandlerRoutine
+ *  gwltty_ttywnd is the tty this hidden window will handle messages from
+ */
+#define gwltty_phandler 0
+#define gwltty_ttywnd 4
+
+/* Forward declaration prototypes for internal functions 
+ */
+static BOOL CALLBACK EnumttyWindow(HWND wnd, LPARAM retwnd);
+static LRESULT WINAPI RegisterWindows9xService(BOOL set_service);
+static LRESULT CALLBACK ttyConsoleCtrlWndProc(HWND hwnd, UINT msg, 
+                                              WPARAM wParam, LPARAM lParam);
+static DWORD WINAPI ttyConsoleCtrlThread(LPVOID tty);
+static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, 
+                                WPARAM wParam, LPARAM lParam);
+static int HookProc(int hc, HWND *hwnd, UINT *msg, 
+                    WPARAM *wParam, LPARAM *lParam);
+#ifdef DBG
+static VOID DbgPrintf(LPTSTR fmt, ...);
+#endif
+
+
+/* DllMain is invoked by every process in the entire system that is hooked
+ * by our window hooks, notably the tty processes' context, and by the user
+ * who wants tty messages (the app).  Keep it light and simple.
+ */
+BOOL __declspec(dllexport) APIENTRY DllMain(HINSTANCE hModule, ULONG ulReason, 
+                                            LPVOID pctx)
+{
+    if (ulReason == DLL_PROCESS_ATTACH) 
+    {
+        //hmodThis = hModule;
+        if (!hookwndmsg) {
+            origwndprop = MAKEINTATOM(GlobalAddAtom("Win9xConHookOrigProc"));
+            hookwndprop = MAKEINTATOM(GlobalAddAtom("Win9xConHookThunkWnd"));
+            hookwndmsg = RegisterWindowMessage("Win9xConHookMsg");
+        }
+#ifdef DBG
+//        DbgPrintf("H ProcessAttach:%8.8x\r\n", 
+//                  GetCurrentProcessId());
+#endif
+    }
+    else if ( ulReason == DLL_PROCESS_DETACH ) 
+    {
+#ifdef DBG
+//        DbgPrintf("H ProcessDetach:%8.8x\r\n", GetCurrentProcessId());                
+#endif
+        if (monitor_hwnd)
+            SendMessage(monitor_hwnd, WM_DESTROY, 0, 0);
+        if (is_subclassed) 
+            SendMessage(hwtty, hookwndmsg, 0, (LPARAM)hwtty);
+        if (hmodHook)
+        {
+            if (hhkGetMessage) {
+                UnhookWindowsHookEx(hhkGetMessage);
+                hhkGetMessage = NULL;
+            }
+            //if (hhkCallWndProc) {
+            //    UnhookWindowsHookEx(hhkCallWndProc);
+            //    hhkCallWndProc = NULL;
+            //}
+            FreeLibrary(hmodHook);
+            hmodHook = NULL;
+        }
+        if (is_service)
+            RegisterWindows9xService(FALSE);
+        if (hookwndmsg) {
+            GlobalDeleteAtom((ATOM)origwndprop);
+            GlobalDeleteAtom((ATOM)hookwndprop);
+            hookwndmsg = 0;
+        }
+    }
+    return TRUE;
+}
+
+
+/*  This group of functions are provided for the service/console app
+ *  to register itself a HandlerRoutine to accept tty or service messages
+ */
+
+
+/*  Exported function that creates a Win9x 'service' via a hidden window,
+ *  that notifies the process via the HandlerRoutine messages.
+ */
+BOOL __declspec(dllexport) WINAPI Windows9xServiceCtrlHandler(
+        PHANDLER_ROUTINE phandler,
+        LPCSTR name)
+{
+    /* If we have not yet done so */
+    FreeConsole();
+
+    if (name)
+    {
+        DWORD tid;
+        HANDLE hThread;
+        /* NOTE: this is static so the module can continue to
+         * access these args while we go on to other things
+         */
+        static tty_info tty;
+        tty.instance = GetModuleHandle(NULL);
+        tty.phandler = phandler;
+        tty.parent = NULL;
+        tty.name = name;
+        tty.type = 2;
+        RegisterWindows9xService(TRUE);
+        hThread = CreateThread(NULL, 0, ttyConsoleCtrlThread,
+                               (LPVOID)&tty, 0, &tid);
+        if (hThread)
+        {
+            CloseHandle(hThread);
+            return TRUE;
+        }
+    }
+    else /* remove */
+    {
+        if (monitor_hwnd)
+            SendMessage(monitor_hwnd, WM_DESTROY, 0, 0);
+        RegisterWindows9xService(FALSE);
+        return TRUE;
+    }
+    return FALSE;
+}
+
+
+/*  Exported function that registers a HandlerRoutine to accept missing
+ *  Win9x CTRL_EVENTs from the tty window, as NT does without a hassle.
+ *  If add is 1 or 2, register the handler, if 2 also mark it as a service.
+ *  If add is 0 deregister the handler, and unmark if a service
+ */
+BOOL __declspec(dllexport) WINAPI FixConsoleCtrlHandler(
+        PHANDLER_ROUTINE phandler,
+        INT add)
+{
+    HWND parent;
+
+    if (add)
+    {
+        HANDLE hThread;
+        DWORD tid;
+        /* NOTE: this is static so the module can continue to
+         * access these args while we go on to other things
+         */
+        static tty_info tty;
+        EnumWindows(EnumttyWindow, (LPARAM)&parent);
+        if (!parent) {
+#ifdef DBG
+            DbgPrintf("A EnumttyWindow failed (%d)\r\n", GetLastError());
+#endif
+            return FALSE;
+        }
+        tty.instance = GetModuleHandle(NULL);
+        tty.phandler = phandler;
+        tty.parent = parent;
+        tty.type = add;
+        if (add == 2) {
+            tty.name = "ttyService";
+            RegisterWindows9xService(TRUE);
+        }
+        else 
+            tty.name = "ttyMonitor";
+        hThread = CreateThread(NULL, 0, ttyConsoleCtrlThread,
+                               (LPVOID)&tty, 0, &tid);
+        if (!hThread)
+            return FALSE;        
+        CloseHandle(hThread);
+        hmodHook = LoadLibrary("Win9xConHook.dll");
+        if (hmodHook)
+        {
+            hhkGetMessage = SetWindowsHookEx(WH_GETMESSAGE,
+              (HOOKPROC)GetProcAddress(hmodHook, "GetMsgProc"), hmodHook, 0);
+            //hhkCallWndProc = SetWindowsHookEx(WH_CALLWNDPROC,
+            //  (HOOKPROC)GetProcAddress(hmodHook, "CallWndProc"), hmodHook, 0);
+        }        
+        return TRUE;
+    }
+    else /* remove */
+    {
+        if (monitor_hwnd) {
+            SendMessage(monitor_hwnd, WM_DESTROY, 0, 0);
+        }
+        if (hmodHook)
+        {
+            if (hhkGetMessage) {
+                UnhookWindowsHookEx(hhkGetMessage);
+                hhkGetMessage = NULL;
+            }
+            //if (hhkCallWndProc) {
+            //    UnhookWindowsHookEx(hhkCallWndProc);
+            //    hhkCallWndProc = NULL;
+            //}
+            FreeLibrary(hmodHook);
+            hmodHook = NULL;
+        }
+        if (is_service)
+            RegisterWindows9xService(FALSE);
+        return TRUE;
+    }
+    return FALSE;
+}
+
+
+/*  The following internal helpers are only used within the app's context
+ */
+
+/* ttyConsoleCreateThread is the process that runs within the user app's
+ * context.  It creates and pumps the messages of a hidden monitor window,
+ * watching for messages from the system, or the associated subclassed tty 
+ * window.  Things can happen in our context that can't be done from the
+ * tty's context, and visa versa, so the subclass procedure and this hidden
+ * window work together to make it all happen.
+ */
+static DWORD WINAPI ttyConsoleCtrlThread(LPVOID tty)
+{
+    WNDCLASS wc;
+    MSG msg;
+    wc.style         = CS_GLOBALCLASS;
+    wc.lpfnWndProc   = ttyConsoleCtrlWndProc; 
+    wc.cbClsExtra    = 0;
+    wc.cbWndExtra    = 8; 
+    wc.hInstance     = NULL;
+    wc.hIcon         = NULL;
+    wc.hCursor       = NULL;
+    wc.hbrBackground = NULL;
+    wc.lpszMenuName  = NULL;
+    if (((tty_info*)tty)->parent)
+        wc.lpszClassName = "ttyConHookChild";
+    else
+        wc.lpszClassName = "ApacheWin95ServiceMonitor";
+        
+    if (!RegisterClass(&wc)) { 
+#ifdef DBG
+        DbgPrintf("A proc %8.8x Error creating class %s (%d)\r\n", 
+                  GetCurrentProcessId(), wc.lpszClassName, GetLastError());
+#endif
+        return 0;
+    }
+
+    /* Create an invisible window */
+    monitor_hwnd = CreateWindow(wc.lpszClassName, ((tty_info*)tty)->name, 
+                                WS_OVERLAPPED & ~WS_VISIBLE,
+                                CW_USEDEFAULT, CW_USEDEFAULT, 
+                                CW_USEDEFAULT, CW_USEDEFAULT, 
+                                NULL, NULL, 
+                                ((tty_info*)tty)->instance, tty);
+
+    if (!monitor_hwnd) {
+#ifdef DBG
+        DbgPrintf("A proc %8.8x Error creating window %s %s (%d)\r\n", 
+                  GetCurrentProcessId(), wc.lpszClassName, 
+                  ((tty_info*)tty)->name, GetLastError());
+#endif
+        return 0;
+    }
+
+    while (GetMessage(&msg, NULL, 0, 0)) 
+    {
+        TranslateMessage(&msg);
+        DispatchMessage(&msg);
+    }
+
+    /* Tag again as deleted, just in case we missed WM_DESTROY */
+    monitor_hwnd = NULL;
+    return 0;
+}
+
+
+/* This is the WndProc procedure for our invisible window.
+ * When our subclasssed tty window receives the WM_CLOSE, WM_ENDSESSION,
+ * or WM_QUERYENDSESSION messages, the message is dispatched to our hidden
+ * window (this message process), and we call the installed HandlerRoutine 
+ * that was registered by the app.
+ */
+static LRESULT CALLBACK ttyConsoleCtrlWndProc(HWND hwnd, UINT msg, 
+                                              WPARAM wParam, LPARAM lParam)
+{
+    if (msg == WM_CREATE)
+    {
+        tty_info *tty = (tty_info*)(((LPCREATESTRUCT)lParam)->lpCreateParams);
+        SetWindowLong(hwnd, gwltty_phandler, (LONG)tty->phandler);
+        SetWindowLong(hwnd, gwltty_ttywnd, (LONG)tty->parent);
+#ifdef DBG
+        DbgPrintf("A proc %8.8x created %8.8x %s for tty wnd %8.8x\r\n", 
+                  GetCurrentProcessId(), hwnd, 
+                  tty->name, tty->parent);
+#endif
+        if (tty->parent) {
+            SetProp(tty->parent, hookwndprop, hwnd);
+            PostMessage(tty->parent, hookwndmsg, 
+                        tty->type, (LPARAM)tty->parent); 
+        }
+        return 0;
+    }
+    else if (msg == WM_DESTROY)
+    {
+        HWND parent = (HWND)GetWindowLong(hwnd, gwltty_ttywnd);
+#ifdef DBG
+        DbgPrintf("A proc %8.8x destroyed %8.8x ttyConHookChild\r\n",
+                  GetCurrentProcessId(), hwnd);
+#endif
+        if (parent) {
+            RemoveProp(parent, hookwndprop);
+            SendMessage(parent, hookwndmsg, 0, (LPARAM)parent); 
+        }
+        monitor_hwnd = NULL;
+    }
+    else if (msg == WM_CLOSE)
+    {
+        PHANDLER_ROUTINE phandler = 
+            (PHANDLER_ROUTINE)GetWindowLong(hwnd, gwltty_phandler);
+        LRESULT rv = phandler(CTRL_CLOSE_EVENT);
+#ifdef DBG
+        DbgPrintf("A proc %8.8x invoked CTRL_CLOSE_EVENT "
+                  "returning %d\r\n",
+                  GetCurrentProcessId(), rv);
+#endif
+        if (rv)
+            return !rv;
+    }
+    else if ((msg == WM_QUERYENDSESSION) || (msg == WM_ENDSESSION))
+    {
+        if (lParam & ENDSESSION_LOGOFF) 
+        {
+            PHANDLER_ROUTINE phandler = 
+                (PHANDLER_ROUTINE)GetWindowLong(hwnd, gwltty_phandler);
+            LRESULT rv = phandler(CTRL_LOGOFF_EVENT);
+#ifdef DBG
+            DbgPrintf("A proc %8.8x invoked CTRL_LOGOFF_EVENT "
+                      "returning %d\r\n",
+                      GetCurrentProcessId(), rv);
+#endif
+            if (rv)
+                return ((msg == WM_QUERYENDSESSION) ? rv : !rv);
+        }
+        else
+        {
+            PHANDLER_ROUTINE phandler = 
+                (PHANDLER_ROUTINE)GetWindowLong(hwnd, gwltty_phandler);
+            LRESULT rv = phandler(CTRL_SHUTDOWN_EVENT);
+#ifdef DBG
+            DbgPrintf("A proc %8.8x invoked CTRL_SHUTDOWN_EVENT "
+                      "returning %d\r\n", GetCurrentProcessId(), rv);
+#endif
+            if (rv)
+                return ((msg == WM_QUERYENDSESSION) ? rv : !rv);
+        }
+    }
+    return (DefWindowProc(hwnd, msg, wParam, lParam));
+}
+
+
+/*  The following internal helpers are invoked by the hooked tty and our app
+ */
+
+ 
+/*  Register or deregister the current process as a Windows9x style service.
+ *  Experience shows this call is ignored across processes, so the second
+ *  arg to RegisterServiceProcess (process group id) is effectively useless.
+ */
+static LRESULT WINAPI RegisterWindows9xService(BOOL set_service)
+{
+    static HINSTANCE hkernel;
+    static DWORD (WINAPI *register_service_process)(DWORD, DWORD) = NULL;
+    BOOL rv;
+
+    if (set_service == is_service)
+        return 1;
+
+#ifdef DBG
+    DbgPrintf("R %s proc %8.8x as a service\r\n",
+              set_service ? "installing" : "removing",
+              GetCurrentProcessId());
+#endif
+
+    if (!register_service_process)
+    {
+        /* Obtain a handle to the kernel library */
+        hkernel = LoadLibrary("KERNEL32.DLL");
+        if (!hkernel)
+            return 0;
+    
+        /* Find the RegisterServiceProcess function */
+        register_service_process = (DWORD (WINAPI *)(DWORD, DWORD))
+                         GetProcAddress(hkernel, "RegisterServiceProcess");
+        if (register_service_process == NULL) {
+            FreeLibrary(hkernel);
+            return 0;
+        }
+    }
+    
+    /* Register this process as a service */
+    rv = register_service_process(0, set_service != FALSE);
+    if (rv)
+        is_service = set_service;
+    
+    if (!is_service)
+    {
+        /* Unload the kernel library */
+        FreeLibrary(hkernel);
+        register_service_process = NULL;
+    }
+    return rv;
+}
+
+
+/* 
+ * This function only works when this process is the active process 
+ * (e.g. once it is running a child process, it can no longer determine 
+ * which console window is its own.)
+ */
+static BOOL CALLBACK EnumttyWindow(HWND wnd, LPARAM retwnd)
+{
+    char tmp[8];
+    if (GetClassName(wnd, tmp, sizeof(tmp)) && !strcmp(tmp, "tty")) 
+    {
+        DWORD wndproc, thisproc = GetCurrentProcessId();
+        GetWindowThreadProcessId(wnd, &wndproc);
+        if (wndproc == thisproc) {
+            *((HWND*)retwnd) = wnd;
+            return FALSE;
+        }
+    }
+    return TRUE;
+}
+
+
+/* The remaining code all executes --in the tty's own process context--
+ *
+ * That means special attention must be paid to what it's doing...
+ */
+
+/* Subclass message process for the tty window
+ *
+ * This code -handles- WM_CLOSE, WM_ENDSESSION and WM_QUERYENDSESSION
+ * by dispatching them to the window identified by the hookwndprop
+ * property atom set against our window.  Messages are then dispatched
+ * to origwndprop property atom we set against the window when we
+ * injected this subclass.  This trick did not work with simply a hook.
+ */
+static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, 
+                                WPARAM wParam, LPARAM lParam)
+{
+    WNDPROC origproc = (WNDPROC) GetProp(hwnd, origwndprop);
+    if (!origproc)
+        return 0;
+
+    if (msg == WM_NCDESTROY 
+        || (msg == hookwndmsg && !LOWORD(wParam) && (HWND)lParam == hwnd))
+    {
+        if (is_subclassed) {
+#ifdef DBG
+            DbgPrintf("W proc %08x hwnd:%08x Subclass removed\r\n", 
+                      GetCurrentProcessId(), hwnd);
+#endif
+            if (is_service)
+                RegisterWindows9xService(FALSE);
+            SetWindowLong(hwnd, GWL_WNDPROC, (LONG)origproc);
+            RemoveProp(hwnd, origwndprop);
+            RemoveProp(hwnd, hookwndprop);
+            is_subclassed = FALSE;
+            //if (hmodLock)
+            //    FreeLibrary(hmodLock);
+            //hmodLock = NULL;
+        }
+    }
+    else if (msg == WM_CLOSE || msg == WM_ENDSESSION 
+                             || msg == WM_QUERYENDSESSION)
+    {
+        HWND child = (HWND)GetProp(hwnd, hookwndprop);
+        if (child) {
+#ifdef DBG
+            DbgPrintf("W proc %08x hwnd:%08x forwarded msg:%d\r\n", 
+                      GetCurrentProcessId(), hwnd, msg);
+#endif
+            return SendMessage(child, msg, wParam, lParam);
+        }
+    }
+    return CallWindowProc(origproc, hwnd, msg, wParam, lParam);
+}
+
+
+/* HookProc, once installed, is responsible for subclassing the system
+ * tty windows.  It generally does nothing special itself, since
+ * research indicates that it cannot deal well with the messages we are
+ * interested in, that is, WM_CLOSE, WM_QUERYSHUTDOWN and WM_SHUTDOWN
+ * of the tty process.
+ *
+ * Respond and subclass only when a WM_NULL is received by the window.
+ */
+int HookProc(int hc, HWND *hwnd, UINT *msg, WPARAM *wParam, LPARAM *lParam)
+{
+    if (is_tty == -1 && *hwnd) 
+    {
+        char ttybuf[8];
+        HWND htty;
+        hwtty = *hwnd;
+        while (htty = GetParent(hwtty))
+            hwtty = htty;
+        is_tty = (GetClassName(hwtty, ttybuf, sizeof(ttybuf)) 
+                  && !strcmp(ttybuf, "tty"));
+#ifdef DBG
+        if (is_tty)
+            DbgPrintf("H proc %08x tracking hwnd %08x\r\n", 
+                      GetCurrentProcessId(), hwtty);
+#endif
+    }
+
+    if (*msg == hookwndmsg && *wParam && *lParam == (LPARAM)hwtty && is_tty)
+    {
+        WNDPROC origproc = (WNDPROC)GetWindowLong(hwtty, GWL_WNDPROC);
+        //char myname[MAX_PATH];
+        //if (GetModuleFileName(hmodThis, myname, sizeof(myname)))
+        //    hmodLock = LoadLibrary(myname);        
+        SetProp(hwtty, origwndprop, origproc);
+        SetWindowLong(hwtty, GWL_WNDPROC, (LONG)WndProc);
+        is_subclassed = TRUE;
+#ifdef DBG
+        DbgPrintf("H proc %08x hwnd:%08x Subclassed\r\n", 
+                  GetCurrentProcessId(), hwtty);
+#endif
+        if (LOWORD(*wParam) == 2)
+            RegisterWindows9xService(TRUE);
+    }
+
+    return -1;
+}
+
+
+/*
+ * PostMessage Hook:
+ */
+LRESULT __declspec(dllexport) CALLBACK GetMsgProc(INT hc, WPARAM wParam, 
+                                                  LPARAM lParam)
+{
+    PMSG pmsg;
+
+    pmsg = (PMSG)lParam;
+
+    if (pmsg) {
+        int rv = HookProc(hc, &pmsg->hwnd, &pmsg->message, 
+                          &pmsg->wParam, &pmsg->lParam);
+        if (rv != -1)
+            return rv;
+    }
+    /* 
+     * CallNextHookEx apparently ignores the hhook argument, so pass NULL
+     */
+    return CallNextHookEx(NULL, hc, wParam, lParam);
+}
+
+
+/*
+ * SendMessage Hook:
+ */
+LRESULT __declspec(dllexport) CALLBACK CallWndProc(INT hc, WPARAM wParam, 
+                                                   LPARAM lParam)
+{
+    PCWPSTRUCT pcwps = (PCWPSTRUCT)lParam;
+    
+    if (pcwps) {
+        int rv = HookProc(hc, &pcwps->hwnd, &pcwps->message, 
+                          &pcwps->wParam, &pcwps->lParam);
+        if (rv != -1)
+            return rv;
+    }
+    /* 
+     * CallNextHookEx apparently ignores the hhook argument, so pass NULL
+     */
+    return CallNextHookEx(NULL, hc, wParam, lParam);
+}
+
+
+#ifdef DBG
+VOID DbgPrintf(
+    LPTSTR fmt,
+    ...
+    )
+{
+    static HANDLE mutex;
+    va_list marker;
+    TCHAR szBuf[256];
+    DWORD t;
+    HANDLE gDbgOut;
+
+    va_start(marker, fmt);
+    wvsprintf(szBuf, fmt, marker);
+    va_end(marker);
+
+    if (!mutex)
+        mutex = CreateMutex(NULL, FALSE, "Win9xConHookDbgOut");
+    WaitForSingleObject(mutex, INFINITE);
+    gDbgOut = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0,
+                         NULL, OPEN_EXISTING, FILE_FLAG_WRITE_THROUGH, NULL);
+    WriteFile(gDbgOut, szBuf, strlen(szBuf), &t, NULL);
+    CloseHandle(gDbgOut);
+    ReleaseMutex(mutex);
+}
+#endif
+
+#endif /* WIN32 */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.def b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.def
new file mode 100644
index 00000000..85ec1664
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.def
@@ -0,0 +1,10 @@
+LIBRARY Win9xConHook
+
+EXETYPE WINDOWS
+
+EXPORTS
+    DllMain
+    GetMsgProc
+    CallWndProc
+    FixConsoleCtrlHandler
+    Windows9xServiceCtrlHandler
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.dsp b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.dsp
new file mode 100644
index 00000000..77cbacfc
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.dsp
@@ -0,0 +1,103 @@
+# Microsoft Developer Studio Project File - Name="Win9xConHook" - Package Owner=<4>
+# Microsoft Developer Studio Generated Build File, Format Version 6.00
+# ** DO NOT EDIT **
+
+# TARGTYPE "Win32 (x86) Dynamic-Link Library" 0x0102
+
+CFG=Win9xConHook - Win32 Release
+!MESSAGE This is not a valid makefile. To build this project using NMAKE,
+!MESSAGE use the Export Makefile command and run
+!MESSAGE 
+!MESSAGE NMAKE /f "Win9xConHook.mak".
+!MESSAGE 
+!MESSAGE You can specify a configuration when running NMAKE
+!MESSAGE by defining the macro CFG on the command line. For example:
+!MESSAGE 
+!MESSAGE NMAKE /f "Win9xConHook.mak" CFG="Win9xConHook - Win32 Release"
+!MESSAGE 
+!MESSAGE Possible choices for configuration are:
+!MESSAGE 
+!MESSAGE "Win9xConHook - Win32 Release" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE "Win9xConHook - Win32 Debug" (based on "Win32 (x86) Dynamic-Link Library")
+!MESSAGE 
+
+# Begin Project
+# PROP AllowPerConfigDependencies 0
+# PROP Scc_ProjName ""
+# PROP Scc_LocalPath ""
+CPP=cl.exe
+MTL=midl.exe
+RSC=rc.exe
+
+!IF  "$(CFG)" == "Win9xConHook - Win32 Release"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 0
+# PROP BASE Output_Dir ".\Release"
+# PROP BASE Intermediate_Dir ".\Release"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 0
+# PROP Output_Dir "Release"
+# PROP Intermediate_Dir "Release"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "SHARED_MODULE" /Fd"Release\Win9xConHook" /FD /c
+# ADD BASE MTL /nologo /D "NDEBUG" /win32
+# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x809 /d "NDEBUG"
+# ADD RSC /l 0x809 /d "NDEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib /nologo /subsystem:windows /dll /incremental:no /base:"0x1c0f0000"
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib /nologo /subsystem:windows /dll /incremental:no /base:"0x1c0f0000" /opt:ref
+
+!ELSEIF  "$(CFG)" == "Win9xConHook - Win32 Debug"
+
+# PROP BASE Use_MFC 0
+# PROP BASE Use_Debug_Libraries 1
+# PROP BASE Output_Dir "Debug"
+# PROP BASE Intermediate_Dir "Debug"
+# PROP BASE Target_Dir ""
+# PROP Use_MFC 0
+# PROP Use_Debug_Libraries 1
+# PROP Output_Dir "Debug"
+# PROP Intermediate_Dir "Debug"
+# PROP Ignore_Export_Lib 0
+# PROP Target_Dir ""
+# ADD BASE CPP /nologo /MDd /W3 /EHsc /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /FD /c
+# ADD CPP /nologo /MDd /W3 /EHsc /Zi /Od /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /D "SHARED_MODULE" /Fd"Debug\Win9xConHook" /FD /c
+# ADD BASE MTL /nologo /D "_DEBUG" /win32
+# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
+# ADD BASE RSC /l 0x809 /d "_DEBUG"
+# ADD RSC /l 0x809 /d "_DEBUG"
+BSC32=bscmake.exe
+# ADD BASE BSC32 /nologo
+# ADD BSC32 /nologo
+LINK32=link.exe
+# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib /nologo /subsystem:windows /dll /incremental:no /debug /base:"0x1c0f0000"
+# ADD LINK32 kernel32.lib user32.lib gdi32.lib /nologo /subsystem:windows /dll /incremental:no /debug /base:"0x1c0f0000"
+
+!ENDIF 
+
+# Begin Target
+
+# Name "Win9xConHook - Win32 Release"
+# Name "Win9xConHook - Win32 Debug"
+# Begin Source File
+
+SOURCE=.\Win9xConHook.c
+# End Source File
+# Begin Source File
+
+SOURCE=.\Win9xConHook.def
+# End Source File
+# Begin Source File
+
+SOURCE=.\Win9xConHook.h
+# End Source File
+# End Target
+# End Project
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.h b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.h
new file mode 100644
index 00000000..e3471034
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/Win9xConHook.h
@@ -0,0 +1,57 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef AP_WIN9XCONHOOK_H
+#define AP_WIN9XCONHOOK_H
+
+#ifdef WIN32
+
+/* Windows9xServiceCtrlHandler registers a handler routine, frees the
+ * console window, and registers this process as a service in Win9x.
+ * It creats a hidden window of class "ApacheWin95ServiceMonitor"
+ * and titled by the name passed, which passes the WM_SHUTDOWN message 
+ * through the given HandlerRoutine's CTRL_SHUTDOWN event.
+ * Call with name of NULL to remove the Service handler.
+ */
+BOOL WINAPI Windows9xServiceCtrlHandler(PHANDLER_ROUTINE phandler, LPCSTR name);
+
+
+/* FixConsoleControlHandler registers a handler routine with the
+ * Win9xConHook.dll, creating a hidden window and forwarding the
+ * WM_ENDSESSION and WM_CLOSE messages to the given HandlerRoutine
+ * as CTRL_SHUTDOWN_EVENT, CTRL_LOGOFF_EVENT and CTRL_CLOSE_EVENT. 
+ * The application should still use SetConsoleCtrlHandler to grab
+ * the CTRL_BREAK_EVENT and CTRL_C_EVENT, if desired.
+ */
+BOOL WINAPI FixConsoleCtrlHandler(PHANDLER_ROUTINE phandler, BOOL add);
+
+
+/*
+ * Exported PostMessage Hook, never use this directly:
+ *
+ * LRESULT CALLBACK GetMsgProc(INT hc, WPARAM wParam, LPARAM lParam);
+ */
+
+
+/*
+ * Exported SendMessage Hook, never use this directly:
+ *
+ * LRESULT CALLBACK CallWndProc(INT hc, WPARAM wParam, LPARAM lParam);
+ */
+
+#endif /* WIN32 */
+
+#endif AP_WIN9XCONHOOK_H
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/child.c b/rubbos/app/httpd-2.0.64/server/mpm/winnt/child.c
new file mode 100644
index 00000000..266d0b3c
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/child.c
@@ -0,0 +1,1167 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifdef WIN32
+
+#define CORE_PRIVATE 
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"	/* for read_config */ 
+#include "http_core.h"		/* for get_remote_host */ 
+#include "http_connection.h"
+#include "apr_portable.h"
+#include "apr_thread_proc.h"
+#include "apr_getopt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_shm.h"
+#include "apr_thread_mutex.h"
+#include "ap_mpm.h"
+#include "ap_config.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+#include "mpm_winnt.h"
+#include "mpm_common.h"
+#include <malloc.h>
+#include "apr_atomic.h"
+
+/* shared with mpm_winnt.c */
+extern DWORD my_pid;
+
+/* used by parent to signal the child to start and exit */
+/* shared with mpm_winnt.c, but should be private to child.c */
+apr_proc_mutex_t *start_mutex;
+HANDLE exit_event;
+
+/* child_main() should never need to modify is_graceful!?! */
+extern int volatile is_graceful;
+
+/* Queue for managing the passing of COMP_CONTEXTs between
+ * the accept and worker threads.
+ */
+static apr_pool_t *pchild;
+static int shutdown_in_progress = 0;
+static int workers_may_exit = 0;
+static unsigned int g_blocked_threads = 0;
+static HANDLE max_requests_per_child_event;
+
+static apr_thread_mutex_t  *child_lock;
+static apr_thread_mutex_t  *qlock;
+static PCOMP_CONTEXT qhead = NULL;
+static PCOMP_CONTEXT qtail = NULL;
+static int num_completion_contexts = 0;
+static int max_num_completion_contexts = 0;
+static HANDLE ThreadDispatchIOCP = NULL;
+static HANDLE qwait_event = NULL;
+
+
+AP_DECLARE(void) mpm_recycle_completion_context(PCOMP_CONTEXT context)
+{
+    /* Recycle the completion context.
+     * - clear the ptrans pool
+     * - put the context on the queue to be consumed by the accept thread
+     * Note: 
+     * context->accept_socket may be in a disconnected but reusable 
+     * state so -don't- close it.
+     */
+    if (context) {
+        apr_pool_clear(context->ptrans);
+        context->ba = apr_bucket_alloc_create(context->ptrans);
+        context->next = NULL;
+        ResetEvent(context->Overlapped.hEvent);
+        apr_thread_mutex_lock(qlock);
+        if (qtail) {
+            qtail->next = context;
+        } else {
+            qhead = context;
+            SetEvent(qwait_event);
+        }
+        qtail = context;
+        apr_thread_mutex_unlock(qlock);
+    }
+}
+
+AP_DECLARE(PCOMP_CONTEXT) mpm_get_completion_context(void)
+{
+    apr_status_t rv;
+    PCOMP_CONTEXT context = NULL;
+
+    while (1) {
+        /* Grab a context off the queue */
+        apr_thread_mutex_lock(qlock);
+        if (qhead) {
+            context = qhead;
+            qhead = qhead->next;
+            if (!qhead)
+                qtail = NULL;
+        } else {
+            ResetEvent(qwait_event);
+        }
+        apr_thread_mutex_unlock(qlock);
+  
+        if (!context) {
+            /* We failed to grab a context off the queue, consider allocating
+             * a new one out of the child pool. There may be up to 
+             * (ap_threads_per_child + num_listeners) contexts in the system 
+             * at once.
+             */
+            if (num_completion_contexts >= max_num_completion_contexts) {
+                /* All workers are busy, need to wait for one */
+                static int reported = 0;
+                if (!reported) {
+                    ap_log_error(APLOG_MARK, APLOG_WARNING, 0, ap_server_conf,
+                                 "Server ran out of threads to serve requests. Consider "
+                                 "raising the ThreadsPerChild setting");
+                    reported = 1;
+                }
+
+                /* Wait for a worker to free a context. Once per second, give
+                 * the caller a chance to check for shutdown. If the wait
+                 * succeeds, get the context off the queue. It must be available,
+                 * since there's only one consumer.
+                 */
+                rv = WaitForSingleObject(qwait_event, 1000);
+                if (rv == WAIT_OBJECT_0)
+                    continue;
+                else /* Hopefully, WAIT_TIMEOUT */
+                    return NULL;
+            } else {
+                /* Allocate another context.
+                 * Note:
+                 * Multiple failures in the next two steps will cause the pchild pool
+                 * to 'leak' storage. I don't think this is worth fixing...
+                 */
+                apr_allocator_t *allocator;
+
+                apr_thread_mutex_lock(child_lock);
+                context = (PCOMP_CONTEXT) apr_pcalloc(pchild, sizeof(COMP_CONTEXT));
+  
+                context->Overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+                if (context->Overlapped.hEvent == NULL) {
+                    /* Hopefully this is a temporary condition ... */
+                    ap_log_error(APLOG_MARK,APLOG_WARNING, apr_get_os_error(), ap_server_conf,
+                                 "mpm_get_completion_context: CreateEvent failed.");
+
+                    apr_thread_mutex_unlock(child_lock);
+                    return NULL;
+                }
+ 
+                /* Create the tranaction pool */
+                apr_allocator_create(&allocator);
+                apr_allocator_max_free_set(allocator, ap_max_mem_free);
+                rv = apr_pool_create_ex(&context->ptrans, pchild, NULL, allocator);
+                if (rv != APR_SUCCESS) {
+                    ap_log_error(APLOG_MARK,APLOG_WARNING, rv, ap_server_conf,
+                                 "mpm_get_completion_context: Failed to create the transaction pool.");
+                    CloseHandle(context->Overlapped.hEvent);
+
+                    apr_thread_mutex_unlock(child_lock);
+                    return NULL;
+                }
+                apr_allocator_owner_set(allocator, context->ptrans);
+                apr_pool_tag(context->ptrans, "transaction");
+                context->accept_socket = INVALID_SOCKET;
+                context->ba = apr_bucket_alloc_create(context->ptrans);
+                apr_atomic_inc(&num_completion_contexts); 
+
+                apr_thread_mutex_unlock(child_lock);
+                break;
+            }
+        } else {
+            /* Got a context from the queue */
+            break;
+        }
+    }
+
+    return context;
+}
+
+AP_DECLARE(apr_status_t) mpm_post_completion_context(PCOMP_CONTEXT context, 
+                                                     io_state_e state)
+{
+    LPOVERLAPPED pOverlapped;
+    if (context)
+        pOverlapped = &context->Overlapped;
+    else
+        pOverlapped = NULL;
+
+    PostQueuedCompletionStatus(ThreadDispatchIOCP, 0, state, pOverlapped);
+    return APR_SUCCESS;
+}
+
+
+/*
+ * find_ready_listener()
+ * Only used by Win9* and should go away when the win9*_accept() function is 
+ * reimplemented using apr_poll().
+ */
+static ap_listen_rec *head_listener;
+
+static APR_INLINE ap_listen_rec *find_ready_listener(fd_set * main_fds)
+{
+    ap_listen_rec *lr;
+    SOCKET nsd;
+
+    lr = head_listener;
+    do {
+        apr_os_sock_get(&nsd, lr->sd);
+        if (FD_ISSET(nsd, main_fds)) {
+            head_listener = lr->next;
+            if (!head_listener) {
+                head_listener = ap_listeners;
+            }
+            return lr;
+        }
+        lr = lr->next;
+        if (!lr) {
+            lr = ap_listeners;
+        }
+    } while (lr != head_listener);
+    return NULL;
+}
+
+
+/* Windows 9x specific code...
+ * Accept processing for on Windows 95/98 uses a producer/consumer queue 
+ * model. A single thread accepts connections and queues the accepted socket 
+ * to the accept queue for consumption by a pool of worker threads.
+ *
+ * win9x_accept()
+ *    The accept threads runs this function, which accepts connections off 
+ *    the network and calls add_job() to queue jobs to the accept_queue.
+ * add_job()/remove_job()
+ *    Add or remove an accepted socket from the list of sockets 
+ *    connected to clients. allowed_globals.jobmutex protects
+ *    against multiple concurrent access to the linked list of jobs.
+ * win9x_get_connection()
+ *    Calls remove_job() to pull a job from the accept queue. All the worker 
+ *    threads block on remove_job.
+ */
+
+typedef struct joblist_s {
+    struct joblist_s *next;
+    int sock;
+} joblist;
+
+typedef struct globals_s {
+    HANDLE jobsemaphore;
+    joblist *jobhead;
+    joblist *jobtail;
+    apr_thread_mutex_t *jobmutex;
+    int jobcount;
+} globals;
+
+globals allowed_globals = {NULL, NULL, NULL, NULL, 0};
+
+#define MAX_SELECT_ERRORS 100
+
+
+static void add_job(int sock)
+{
+    joblist *new_job;
+
+    new_job = (joblist *) malloc(sizeof(joblist));
+    if (new_job == NULL) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "Ouch!  Out of memory in add_job()!");
+        return;
+    }
+    new_job->next = NULL;
+    new_job->sock = sock;
+
+    apr_thread_mutex_lock(allowed_globals.jobmutex);
+
+    if (allowed_globals.jobtail != NULL)
+	allowed_globals.jobtail->next = new_job;
+    allowed_globals.jobtail = new_job;
+    if (!allowed_globals.jobhead)
+	allowed_globals.jobhead = new_job;
+    allowed_globals.jobcount++;
+    ReleaseSemaphore(allowed_globals.jobsemaphore, 1, NULL);
+
+    apr_thread_mutex_unlock(allowed_globals.jobmutex);
+}
+
+
+static int remove_job(void)
+{
+    joblist *job;
+    int sock;
+
+    WaitForSingleObject(allowed_globals.jobsemaphore, INFINITE);
+    apr_thread_mutex_lock(allowed_globals.jobmutex);
+
+    if (shutdown_in_progress && !allowed_globals.jobhead) {
+        apr_thread_mutex_unlock(allowed_globals.jobmutex);
+	return (INVALID_SOCKET);
+    }
+    job = allowed_globals.jobhead;
+    ap_assert(job);
+    allowed_globals.jobhead = job->next;
+    if (allowed_globals.jobhead == NULL)
+	allowed_globals.jobtail = NULL;
+    apr_thread_mutex_unlock(allowed_globals.jobmutex);
+    sock = job->sock;
+    free(job);
+
+    return (sock);
+}
+
+
+static unsigned int __stdcall win9x_accept(void * dummy)
+{
+    struct timeval tv;
+    fd_set main_fds;
+    int wait_time = 1;
+    int csd;
+    SOCKET nsd = INVALID_SOCKET;
+    struct sockaddr_in sa_client;
+    int count_select_errors = 0;
+    int rc;
+    int clen;
+    ap_listen_rec *lr;
+    struct fd_set listenfds;
+    SOCKET listenmaxfd = INVALID_SOCKET;
+
+    /* Setup the listeners 
+     * ToDo: Use apr_poll()
+     */
+    FD_ZERO(&listenfds);
+    for (lr = ap_listeners; lr; lr = lr->next) {
+        if (lr->sd != NULL) {
+            apr_os_sock_get(&nsd, lr->sd);
+            FD_SET(nsd, &listenfds);
+            if (listenmaxfd == INVALID_SOCKET || nsd > listenmaxfd) {
+                listenmaxfd = nsd;
+            }
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                         "Child %d: Listening on port %d.", my_pid, lr->bind_addr->port);
+        }
+    }
+
+    head_listener = ap_listeners;
+
+    while (!shutdown_in_progress) {
+	tv.tv_sec = wait_time;
+	tv.tv_usec = 0;
+	memcpy(&main_fds, &listenfds, sizeof(fd_set));
+
+	rc = select(listenmaxfd + 1, &main_fds, NULL, NULL, &tv);
+
+        if (rc == 0 || (rc == SOCKET_ERROR && APR_STATUS_IS_EINTR(apr_get_netos_error()))) {
+            count_select_errors = 0;    /* reset count of errors */            
+            continue;
+        }
+        else if (rc == SOCKET_ERROR) {
+            /* A "real" error occurred, log it and increment the count of
+             * select errors. This count is used to ensure we don't go into
+             * a busy loop of continuous errors.
+             */
+            ap_log_error(APLOG_MARK, APLOG_INFO, apr_get_netos_error(), ap_server_conf, 
+                         "select failed with error %d", apr_get_netos_error());
+            count_select_errors++;
+            if (count_select_errors > MAX_SELECT_ERRORS) {
+                shutdown_in_progress = 1;
+                ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_netos_error(), ap_server_conf,
+                             "Too many errors in select loop. Child process exiting.");
+                break;
+            }
+	} else {
+	    ap_listen_rec *lr;
+
+	    lr = find_ready_listener(&main_fds);
+	    if (lr != NULL) {
+                /* fetch the native socket descriptor */
+                apr_os_sock_get(&nsd, lr->sd);
+	    }
+	}
+
+	do {
+            clen = sizeof(sa_client);
+            csd = accept(nsd, (struct sockaddr *) &sa_client, &clen);
+        } while (csd < 0 && APR_STATUS_IS_EINTR(apr_get_netos_error()));
+
+	if (csd < 0) {
+            if (APR_STATUS_IS_ECONNABORTED(apr_get_netos_error())) {
+		ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_netos_error(), ap_server_conf,
+			    "accept: (client socket)");
+            }
+	}
+	else {
+	    add_job(csd);
+	}
+    }
+    SetEvent(exit_event);
+    return 0;
+}
+
+
+static PCOMP_CONTEXT win9x_get_connection(PCOMP_CONTEXT context)
+{
+    apr_os_sock_info_t sockinfo;
+    int len;
+
+    if (context == NULL) {
+        /* allocate the completion context and the transaction pool */
+        apr_allocator_t *allocator;
+        apr_thread_mutex_lock(child_lock);
+        context = apr_pcalloc(pchild, sizeof(COMP_CONTEXT));
+        apr_allocator_create(&allocator);
+        apr_allocator_max_free_set(allocator, ap_max_mem_free);
+        apr_pool_create_ex(&context->ptrans, pchild, NULL, allocator);
+        apr_allocator_owner_set(allocator, context->ptrans);
+        apr_pool_tag(context->ptrans, "transaction");
+        apr_thread_mutex_unlock(child_lock);
+    }
+    
+    while (1) {
+        apr_pool_clear(context->ptrans);        
+        context->ba = apr_bucket_alloc_create(context->ptrans);
+        context->accept_socket = remove_job();
+        if (context->accept_socket == INVALID_SOCKET) {
+            return NULL;
+        }
+	len = sizeof(struct sockaddr);
+        context->sa_server = apr_palloc(context->ptrans, len);
+        if (getsockname(context->accept_socket, 
+                        context->sa_server, &len)== SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(), ap_server_conf, 
+                         "getsockname failed");
+            continue;
+        }
+        len = sizeof(struct sockaddr);
+        context->sa_client = apr_palloc(context->ptrans, len);
+        if ((getpeername(context->accept_socket,
+                         context->sa_client, &len)) == SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(), ap_server_conf, 
+                         "getpeername failed");
+            memset(&context->sa_client, '\0', sizeof(context->sa_client));
+        }
+        sockinfo.os_sock = &context->accept_socket;
+        sockinfo.local   = context->sa_server;
+        sockinfo.remote  = context->sa_client;
+        sockinfo.family  = APR_INET;
+        sockinfo.type    = SOCK_STREAM;
+        apr_os_sock_make(&context->sock, &sockinfo, context->ptrans);
+
+        return context;
+    }
+}
+
+
+/* Windows NT/2000 specific code...
+ * Accept processing for on Windows NT uses a producer/consumer queue 
+ * model. An accept thread accepts connections off the network then issues
+ * PostQueuedCompletionStatus() to awake a thread blocked on the ThreadDispatch 
+ * IOCompletionPort.
+ *
+ * winnt_accept()
+ *    One or more accept threads run in this function, each of which accepts 
+ *    connections off the network and calls PostQueuedCompletionStatus() to
+ *    queue an io completion packet to the ThreadDispatch IOCompletionPort.
+ * winnt_get_connection()
+ *    Worker threads block on the ThreadDispatch IOCompletionPort awaiting 
+ *    connections to service.
+ */
+#define MAX_ACCEPTEX_ERR_COUNT 250
+static unsigned int __stdcall winnt_accept(void *lr_) 
+{
+    ap_listen_rec *lr = (ap_listen_rec *)lr_;
+    apr_os_sock_info_t sockinfo;
+    PCOMP_CONTEXT context = NULL;
+    DWORD BytesRead;
+    SOCKET nlsd;
+    int rv, err_count = 0;
+
+    apr_os_sock_get(&nlsd, lr->sd);
+
+    while (!shutdown_in_progress) {
+        if (!context) {
+            context = mpm_get_completion_context();
+            if (!context) {
+                /* Temporary resource constraint? */
+                Sleep(0);
+                continue;
+            }
+        }
+
+        /* Create and initialize the accept socket */
+        if (context->accept_socket == INVALID_SOCKET) {
+            context->accept_socket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+            if (context->accept_socket == INVALID_SOCKET) {
+                /* Another temporary condition? */
+                ap_log_error(APLOG_MARK,APLOG_WARNING, apr_get_netos_error(), ap_server_conf,
+                             "winnt_accept: Failed to allocate an accept socket. "
+                             "Temporary resource constraint? Try again.");
+                Sleep(100);
+                continue;
+            }
+        }
+
+        /* AcceptEx on the completion context. The completion context will be 
+         * signaled when a connection is accepted. 
+         */
+        if (!AcceptEx(nlsd, context->accept_socket,
+                      context->buff,
+                      0,
+                      PADDED_ADDR_SIZE, 
+                      PADDED_ADDR_SIZE,
+                      &BytesRead,
+                      &context->Overlapped)) {
+            rv = apr_get_netos_error();
+            if ((rv == APR_FROM_OS_ERROR(WSAEINVAL)) ||
+                (rv == APR_FROM_OS_ERROR(WSAENOTSOCK))) {
+                /* We can get here when:
+                 * 1) the client disconnects early
+                 * 2) TransmitFile does not properly recycle the accept socket (typically
+                 *    because the client disconnected)
+                 * 3) there is VPN or Firewall software installed with buggy AcceptEx implementation
+                 * 4) the webserver is using a dynamic address that has changed
+                 */
+                ++err_count;
+                closesocket(context->accept_socket);
+                context->accept_socket = INVALID_SOCKET;
+                if (err_count > MAX_ACCEPTEX_ERR_COUNT) {
+                    ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                                 "Child %d: Encountered too many errors accepting client connections. "
+                                 "Possible causes: dynamic address renewal, or incompatible VPN or firewall software. "
+                                 "Try using the Win32DisableAcceptEx directive.", my_pid);
+                    err_count = 0;
+                }
+                continue;
+            }
+            else if ((rv != APR_FROM_OS_ERROR(ERROR_IO_PENDING)) &&
+                     (rv != APR_FROM_OS_ERROR(WSA_IO_PENDING))) {
+                ++err_count;
+                closesocket(context->accept_socket);
+                context->accept_socket = INVALID_SOCKET;
+                if (err_count > MAX_ACCEPTEX_ERR_COUNT) { 
+                    ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                                 "Child %d: Encountered too many errors accepting client connections. "
+                                 "Possible causes: Unknown. "
+                                 "Try using the Win32DisableAcceptEx directive.", my_pid);
+                    err_count = 0;
+                }
+                continue;
+            }
+
+            /* Wait for pending i/o. 
+             * Wake up once per second to check for shutdown .
+             * XXX: We should be waiting on exit_event instead of polling
+             */
+            while (1) {
+                rv = WaitForSingleObject(context->Overlapped.hEvent, 1000);
+                if (rv == WAIT_OBJECT_0) {
+                    if (context->accept_socket == INVALID_SOCKET) {
+                        /* socket already closed */
+                        break;
+                    }
+                    if (!GetOverlappedResult((HANDLE)context->accept_socket, 
+                                             &context->Overlapped, 
+                                             &BytesRead, FALSE)) {
+                        ap_log_error(APLOG_MARK, APLOG_WARNING, 
+                                     apr_get_os_error(), ap_server_conf,
+                             "winnt_accept: Asynchronous AcceptEx failed.");
+                        closesocket(context->accept_socket);
+                        context->accept_socket = INVALID_SOCKET;
+                    }
+                    break;
+                }
+                /* WAIT_TIMEOUT */
+                if (shutdown_in_progress) {
+                    closesocket(context->accept_socket);
+                    context->accept_socket = INVALID_SOCKET;
+                    break;
+                }
+            }
+            if (context->accept_socket == INVALID_SOCKET) {
+                continue;
+            }
+        }
+
+        err_count = 0;
+        /* Inherit the listen socket settings. Required for 
+         * shutdown() to work 
+         */
+        if (setsockopt(context->accept_socket, SOL_SOCKET,
+                       SO_UPDATE_ACCEPT_CONTEXT, (char *)&nlsd,
+                       sizeof(nlsd))) {
+            ap_log_error(APLOG_MARK, APLOG_WARNING, apr_get_netos_error(), ap_server_conf,
+                         "setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed.");
+            /* Not a failure condition. Keep running. */
+        }
+
+        /* Get the local & remote address */
+        GetAcceptExSockaddrs(context->buff,
+                             0,
+                             PADDED_ADDR_SIZE,
+                             PADDED_ADDR_SIZE,
+                             &context->sa_server,
+                             &context->sa_server_len,
+                             &context->sa_client,
+                             &context->sa_client_len);
+
+        sockinfo.os_sock = &context->accept_socket;
+        sockinfo.local   = context->sa_server;
+        sockinfo.remote  = context->sa_client;
+        sockinfo.family  = APR_INET;
+        sockinfo.type    = SOCK_STREAM;
+        apr_os_sock_make(&context->sock, &sockinfo, context->ptrans);
+
+        /* When a connection is received, send an io completion notification to
+         * the ThreadDispatchIOCP. This function could be replaced by
+         * mpm_post_completion_context(), but why do an extra function call...
+         */
+        PostQueuedCompletionStatus(ThreadDispatchIOCP, 0, IOCP_CONNECTION_ACCEPTED,
+                                   &context->Overlapped);
+        context = NULL;
+    }
+    if (!shutdown_in_progress) {
+        /* Yow, hit an irrecoverable error! Tell the child to die. */
+        SetEvent(exit_event);
+    }
+    ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS, ap_server_conf,
+                 "Child %d: Accept thread exiting.", my_pid);
+    return 0;
+}
+
+
+static PCOMP_CONTEXT winnt_get_connection(PCOMP_CONTEXT context)
+{
+    int rc;
+    DWORD BytesRead;
+    DWORD CompKey;
+    LPOVERLAPPED pol;
+
+    mpm_recycle_completion_context(context);
+
+    apr_atomic_inc(&g_blocked_threads);
+    while (1) {
+        if (workers_may_exit) {
+            apr_atomic_dec(&g_blocked_threads);
+            return NULL;
+        }
+        rc = GetQueuedCompletionStatus(ThreadDispatchIOCP, &BytesRead, &CompKey,
+                                       &pol, INFINITE);
+        if (!rc) {
+            rc = apr_get_os_error();
+            ap_log_error(APLOG_MARK,APLOG_DEBUG, rc, ap_server_conf,
+                             "Child %d: GetQueuedComplationStatus returned %d", my_pid, rc);
+            continue;
+        }
+
+        switch (CompKey) {
+        case IOCP_CONNECTION_ACCEPTED:
+            context = CONTAINING_RECORD(pol, COMP_CONTEXT, Overlapped);
+            break;
+        case IOCP_SHUTDOWN:
+            apr_atomic_dec(&g_blocked_threads);
+            return NULL;
+        default:
+            apr_atomic_dec(&g_blocked_threads);
+            return NULL;
+        }
+        break;
+    }
+    apr_atomic_dec(&g_blocked_threads);
+
+    return context;
+}
+
+
+/*
+ * worker_main()
+ * Main entry point for the worker threads. Worker threads block in 
+ * win*_get_connection() awaiting a connection to service.
+ */
+static unsigned int __stdcall worker_main(void *thread_num_val)
+{
+    static int requests_this_child = 0;
+    PCOMP_CONTEXT context = NULL;
+    int thread_num = (int)thread_num_val;
+    ap_sb_handle_t *sbh;
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf,
+                 "Child %d: Worker thread %ld starting.", my_pid, thread_num);
+    while (1) {
+        conn_rec *c;
+        apr_int32_t disconnected;
+
+        ap_update_child_status_from_indexes(0, thread_num, SERVER_READY, NULL);
+
+        /* Grab a connection off the network */
+        if (use_acceptex) {
+            context = winnt_get_connection(context);
+        }
+        else {
+            context = win9x_get_connection(context);
+        }
+        if (!context) {
+            /* Time for the thread to exit */
+            break;
+        }
+
+        /* Have we hit MaxRequestPerChild connections? */
+        if (ap_max_requests_per_child) {
+            requests_this_child++;
+            if (requests_this_child > ap_max_requests_per_child) {
+                SetEvent(max_requests_per_child_event);
+            }
+        }
+
+        ap_create_sb_handle(&sbh, context->ptrans, 0, thread_num);
+        c = ap_run_create_connection(context->ptrans, ap_server_conf,
+                                     context->sock, thread_num, sbh,
+                                     context->ba);
+
+        if (c) {
+            ap_process_connection(c, context->sock);
+            apr_socket_opt_get(context->sock, APR_SO_DISCONNECTED, 
+                               &disconnected);
+            if (!disconnected) {
+                context->accept_socket = INVALID_SOCKET;
+                ap_lingering_close(c);
+            }
+            else if (!use_acceptex) {
+                /* If the socket is disconnected but we are not using acceptex, 
+                 * we cannot reuse the socket. Disconnected sockets are removed
+                 * from the apr_socket_t struct by apr_sendfile() to prevent the
+                 * socket descriptor from being inadvertently closed by a call 
+                 * to apr_socket_close(), so close it directly.
+                 */
+                closesocket(context->accept_socket);
+                context->accept_socket = INVALID_SOCKET;
+            }
+        }
+        else {
+            /* ap_run_create_connection closes the socket on failure */
+            context->accept_socket = INVALID_SOCKET;
+        }
+    }
+
+    ap_update_child_status_from_indexes(0, thread_num, SERVER_DEAD, 
+                                        (request_rec *) NULL);
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, APR_SUCCESS, ap_server_conf,
+                 "Child %d: Worker thread %ld exiting.", my_pid, thread_num);
+    return 0;
+}
+
+
+static void cleanup_thread(HANDLE *handles, int *thread_cnt, int thread_to_clean)
+{
+    int i;
+
+    CloseHandle(handles[thread_to_clean]);
+    for (i = thread_to_clean; i < ((*thread_cnt) - 1); i++)
+	handles[i] = handles[i + 1];
+    (*thread_cnt)--;
+}
+
+
+/*
+ * child_main() 
+ * Entry point for the main control thread for the child process. 
+ * This thread creates the accept thread, worker threads and
+ * monitors the child process for maintenance and shutdown
+ * events.
+ */
+static void create_listener_thread()
+{
+    int tid;
+    int num_listeners = 0;
+    if (!use_acceptex) {
+        _beginthreadex(NULL, 0, win9x_accept,
+                       NULL, 0, &tid);
+    } else {
+        /* Start an accept thread per listener 
+         * XXX: Why would we have a NULL sd in our listeners?
+         */
+        ap_listen_rec *lr;
+
+        /* Number of completion_contexts allowed in the system is
+         * (ap_threads_per_child + num_listeners). We need the additional
+         * completion contexts to prevent server hangs when ThreadsPerChild
+         * is configured to something less than or equal to the number
+         * of listeners. This is not a usual case, but people have 
+         * encountered it.
+         * */
+        for (lr = ap_listeners; lr ; lr = lr->next) {
+            num_listeners++;
+        }
+        max_num_completion_contexts = ap_threads_per_child + num_listeners;
+
+        /* Now start a thread per listener */
+        for (lr = ap_listeners; lr; lr = lr->next) {
+            if (lr->sd != NULL) {
+                _beginthreadex(NULL, 1000, winnt_accept,
+                               (void *) lr, 0, &tid);
+            }
+        }
+    }
+}
+
+
+void child_main(apr_pool_t *pconf)
+{
+    apr_status_t status;
+    apr_hash_t *ht;
+    ap_listen_rec *lr;
+    HANDLE child_events[2];
+    HANDLE *child_handles;
+    int listener_started = 0;
+    int threads_created = 0;
+    int watch_thread;
+    int time_remains;
+    int cld;
+    int tid;
+    int rv;
+    int i;
+
+    apr_pool_create(&pchild, pconf);
+    apr_pool_tag(pchild, "pchild");
+
+    ap_run_child_init(pchild, ap_server_conf);
+    ht = apr_hash_make(pchild);
+
+    /* Initialize the child_events */
+    max_requests_per_child_event = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!max_requests_per_child_event) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Failed to create a max_requests event.", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    child_events[0] = exit_event;
+    child_events[1] = max_requests_per_child_event;
+
+    allowed_globals.jobsemaphore = CreateSemaphore(NULL, 0, 1000000, NULL);
+    apr_thread_mutex_create(&allowed_globals.jobmutex, 
+                            APR_THREAD_MUTEX_DEFAULT, pchild);
+
+    /*
+     * Wait until we have permission to start accepting connections.
+     * start_mutex is used to ensure that only one child ever
+     * goes into the listen/accept loop at once.
+     */
+    status = apr_proc_mutex_lock(start_mutex);
+    if (status != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK,APLOG_ERR, status, ap_server_conf,
+                     "Child %d: Failed to acquire the start_mutex. Process will exit.", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, 
+                 "Child %d: Acquired the start mutex.", my_pid);
+
+    /*
+     * Create the worker thread dispatch IOCompletionPort
+     * on Windows NT/2000
+     */
+    if (use_acceptex) {
+        /* Create the worker thread dispatch IOCP */
+        ThreadDispatchIOCP = CreateIoCompletionPort(INVALID_HANDLE_VALUE,
+                                                    NULL,
+                                                    0,
+                                                    0); /* CONCURRENT ACTIVE THREADS */
+        apr_thread_mutex_create(&qlock, APR_THREAD_MUTEX_DEFAULT, pchild);
+        qwait_event = CreateEvent(NULL, TRUE, FALSE, NULL);
+        if (!qwait_event) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                         "Child %d: Failed to create a qwait event.", my_pid);
+            exit(APEXIT_CHILDINIT);
+        }
+    }
+
+    /* 
+     * Create the pool of worker threads
+     */
+    ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, 
+                 "Child %d: Starting %d worker threads.", my_pid, ap_threads_per_child);
+    child_handles = (HANDLE) apr_pcalloc(pchild, ap_threads_per_child * sizeof(int));
+    apr_thread_mutex_create(&child_lock, APR_THREAD_MUTEX_DEFAULT, pchild);
+
+    while (1) {
+        for (i = 0; i < ap_threads_per_child; i++) {
+            int *score_idx;
+            int status = ap_scoreboard_image->servers[0][i].status;
+            if (status != SERVER_GRACEFUL && status != SERVER_DEAD) {
+                continue;
+            }
+            ap_update_child_status_from_indexes(0, i, SERVER_STARTING, NULL);
+            child_handles[i] = (HANDLE) _beginthreadex(NULL, 0, worker_main,
+                                                       (void *) i, 0, &tid);
+            if (child_handles[i] == 0) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                             "Child %d: _beginthreadex failed. Unable to create all worker threads. "
+                             "Created %d of the %d threads requested with the ThreadsPerChild configuration directive.", 
+                             my_pid, threads_created, ap_threads_per_child);
+                ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+                goto shutdown;
+            }
+            threads_created++;
+            /* Save the score board index in ht keyed to the thread handle. We need this 
+             * when cleaning up threads down below...
+             */
+            apr_thread_mutex_lock(child_lock);
+            score_idx = apr_pcalloc(pchild, sizeof(int));
+            *score_idx = i;
+            apr_hash_set(ht, &child_handles[i], sizeof(HANDLE), score_idx);
+            apr_thread_mutex_unlock(child_lock);
+        }
+        /* Start the listener only when workers are available */
+        if (!listener_started && threads_created) {
+            create_listener_thread();
+            listener_started = 1;
+            winnt_mpm_state = AP_MPMQ_RUNNING;
+        }
+        if (threads_created == ap_threads_per_child) {
+            break;
+        }
+        /* Check to see if the child has been told to exit */
+        if (WaitForSingleObject(exit_event, 0) != WAIT_TIMEOUT) {
+            break;
+        }
+        /* wait for previous generation to clean up an entry in the scoreboard */
+        apr_sleep(1 * APR_USEC_PER_SEC);
+    }
+
+    /* Wait for one of three events:
+     * exit_event: 
+     *    The exit_event is signaled by the parent process to notify 
+     *    the child that it is time to exit.
+     *
+     * max_requests_per_child_event: 
+     *    This event is signaled by the worker threads to indicate that
+     *    the process has handled MaxRequestsPerChild connections.
+     *
+     * TIMEOUT:
+     *    To do periodic maintenance on the server (check for thread exits,
+     *    number of completion contexts, etc.)
+     *
+     * XXX: thread exits *aren't* being checked.
+     *
+     * XXX: other_child - we need the process handles to the other children
+     *      in order to map them to apr_proc_other_child_read (which is not
+     *      named well, it's more like a_p_o_c_died.)
+     *
+     * XXX: however - if we get a_p_o_c handle inheritance working, and
+     *      the parent process creates other children and passes the pipes 
+     *      to our worker processes, then we have no business doing such 
+     *      things in the child_main loop, but should happen in master_main.
+     */
+    while (1) {
+#if !APR_HAS_OTHER_CHILD
+        rv = WaitForMultipleObjects(2, (HANDLE *) child_events, FALSE, INFINITE);
+        cld = rv - WAIT_OBJECT_0;
+#else
+        rv = WaitForMultipleObjects(2, (HANDLE *) child_events, FALSE, 1000);
+        cld = rv - WAIT_OBJECT_0;
+        if (rv == WAIT_TIMEOUT) {
+            apr_proc_other_child_check();
+        }
+        else 
+#endif
+            if (rv == WAIT_FAILED) {
+            /* Something serious is wrong */
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                         "Child %d: WAIT_FAILED -- shutting down server", my_pid);
+            break;
+        }
+        else if (cld == 0) {
+            /* Exit event was signaled */
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                         "Child %d: Exit event signaled. Child process is ending.", my_pid);
+            break;
+        }
+        else {
+            /* MaxRequestsPerChild event set by the worker threads.
+             * Signal the parent to restart
+             */
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                         "Child %d: Process exiting because it reached "
+                         "MaxRequestsPerChild. Signaling the parent to "
+                         "restart a new child process.", my_pid);
+            ap_signal_parent(SIGNAL_PARENT_RESTART);
+            break;
+        }
+    }
+
+    /* 
+     * Time to shutdown the child process 
+     */
+
+ shutdown:
+
+    winnt_mpm_state = AP_MPMQ_STOPPING;
+    /* Setting is_graceful will cause threads handling keep-alive connections 
+     * to close the connection after handling the current request.
+     */
+    is_graceful = 1;
+
+    /* Close the listening sockets. Note, we must close the listeners
+     * before closing any accept sockets pending in AcceptEx to prevent
+     * memory leaks in the kernel.
+     */
+    for (lr = ap_listeners; lr ; lr = lr->next) {
+        apr_socket_close(lr->sd);
+    }
+
+    /* Shutdown listener threads and pending AcceptEx socksts 
+     * but allow the worker threads to continue consuming from
+     * the queue of accepted connections.
+     */
+    shutdown_in_progress = 1;
+
+    Sleep(1000);
+
+    /* Tell the worker threads to exit */
+    workers_may_exit = 1;
+
+    /* Release the start_mutex to let the new process (in the restart
+     * scenario) a chance to begin accepting and servicing requests 
+     */
+    rv = apr_proc_mutex_unlock(start_mutex);
+    if (rv == APR_SUCCESS) {
+        ap_log_error(APLOG_MARK,APLOG_NOTICE, rv, ap_server_conf, 
+                     "Child %d: Released the start mutex", my_pid);
+    }
+    else {
+        ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf, 
+                     "Child %d: Failure releasing the start mutex", my_pid);
+    }
+
+    /* Shutdown the worker threads */
+    if (!use_acceptex) {
+        for (i = 0; i < threads_created; i++) {
+            add_job(INVALID_SOCKET);
+        }
+    }
+    else { /* Windows NT/2000 */
+        /* Post worker threads blocked on the ThreadDispatch IOCompletion port */
+        while (g_blocked_threads > 0) {
+            ap_log_error(APLOG_MARK,APLOG_INFO, APR_SUCCESS, ap_server_conf, 
+                         "Child %d: %d threads blocked on the completion port", my_pid, g_blocked_threads);
+            for (i=g_blocked_threads; i > 0; i--) {
+                PostQueuedCompletionStatus(ThreadDispatchIOCP, 0, IOCP_SHUTDOWN, NULL);
+            }
+            Sleep(1000);
+        }
+        /* Empty the accept queue of completion contexts */
+        apr_thread_mutex_lock(qlock);
+        while (qhead) {
+            CloseHandle(qhead->Overlapped.hEvent);
+            closesocket(qhead->accept_socket);
+            qhead = qhead->next;
+        }
+        apr_thread_mutex_unlock(qlock);
+    }
+
+    /* Give busy threads a chance to service their connections,
+     * (no more than the global server timeout period which 
+     * we track in msec remaining).
+     */
+    watch_thread = 0;
+    time_remains = (int)(ap_server_conf->timeout / APR_TIME_C(1000));
+
+    while (threads_created)
+    {
+        int nFailsafe = MAXIMUM_WAIT_OBJECTS;
+        DWORD dwRet;
+
+        /* Every time we roll over to wait on the first group
+         * of MAXIMUM_WAIT_OBJECTS threads, take a breather,
+         * and infrequently update the error log.
+         */
+        if (watch_thread >= threads_created) {
+            if ((time_remains -= 100) < 0)
+                break;
+
+            /* Every 30 seconds give an update */
+            if ((time_remains % 30000) == 0) {
+                ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, 
+                             ap_server_conf,
+                             "Child %d: Waiting %d more seconds "
+                             "for %d worker threads to finish.", 
+                             my_pid, time_remains / 1000, threads_created);
+            }
+            /* We'll poll from the top, 10 times per second */
+            Sleep(100);
+            watch_thread = 0;
+        }
+
+        /* Fairness, on each iteration we will pick up with the thread
+         * after the one we just removed, even if it's a single thread.
+         * We don't block here.
+         */
+        dwRet = WaitForMultipleObjects(min(threads_created - watch_thread,
+                                           MAXIMUM_WAIT_OBJECTS),
+                                       child_handles + watch_thread, 0, 0);
+
+        if (dwRet == WAIT_FAILED) {
+            break;
+        }
+        if (dwRet == WAIT_TIMEOUT) {
+            /* none ready */
+            watch_thread += MAXIMUM_WAIT_OBJECTS;
+            continue;
+        }
+        else if (dwRet >= WAIT_ABANDONED_0) {
+            /* We just got the ownership of the object, which
+             * should happen at most MAXIMUM_WAIT_OBJECTS times.
+             * It does NOT mean that the object is signaled.
+             */
+            if ((nFailsafe--) < 1)
+                break;
+        }
+        else {
+            watch_thread += (dwRet - WAIT_OBJECT_0);
+            if (watch_thread >= threads_created)
+                break;
+            cleanup_thread(child_handles, &threads_created, watch_thread);
+        }
+    }
+
+    /* Kill remaining threads off the hard way */
+    if (threads_created) {
+        ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, 
+                     "Child %d: Terminating %d threads that failed to exit.", 
+                     my_pid, threads_created);
+    }
+    for (i = 0; i < threads_created; i++) {
+        int *score_idx;
+        TerminateThread(child_handles[i], 1);
+        CloseHandle(child_handles[i]);
+        /* Reset the scoreboard entry for the thread we just whacked */
+        score_idx = apr_hash_get(ht, &child_handles[i], sizeof(HANDLE));
+        ap_update_child_status_from_indexes(0, *score_idx, SERVER_DEAD, NULL);        
+    }
+    ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf, 
+                 "Child %d: All worker threads have exited.", my_pid);
+
+    CloseHandle(allowed_globals.jobsemaphore);
+    apr_thread_mutex_destroy(allowed_globals.jobmutex);
+    apr_thread_mutex_destroy(child_lock);
+
+    if (use_acceptex) {
+        apr_thread_mutex_destroy(qlock);
+        CloseHandle(qwait_event);
+    }
+
+    apr_pool_destroy(pchild);
+    CloseHandle(exit_event);
+}
+
+#endif /* def WIN32 */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm.h
new file mode 100644
index 00000000..2cae7a8e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm.h
@@ -0,0 +1,39 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_H
+#define APACHE_MPM_H
+
+/* mpm.h is the place to make declarations that are MPM specific but that must be 
+ * shared with non-mpm specific code in the server.  Hummm, perhaps we can
+ * move most of this stuff to mpm_common.h?
+ */
+
+#include "scoreboard.h"
+
+#define MPM_NAME "WinNT"
+
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+
+extern int ap_threads_per_child;
+extern int ap_thread_limit;
+extern server_rec *ap_server_conf;
+
+#endif /* APACHE_MPM_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_default.h
new file mode 100644
index 00000000..847bd732
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_default.h
@@ -0,0 +1,80 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Default limit on the maximum setting of the ThreadsPerChild configuration
+ * directive.  This limit can be overridden with the ThreadLimit directive.
+ * This limit directly influences the amount of shared storage that is allocated
+ * for the scoreboard. DEFAULT_THREAD_LIMIT represents a good compromise
+ * between scoreboard size and the ability of the server to handle the most
+ * common installation requirements.
+ */
+#ifndef DEFAULT_THREAD_LIMIT
+#define DEFAULT_THREAD_LIMIT 1920
+#endif
+
+/* The ThreadLimit directive can be used to override the DEFAULT_THREAD_LIMIT.
+ * ThreadLimit cannot be tuned larger than MAX_THREAD_LIMIT.
+ * This is a sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_THREAD_LIMIT
+#define MAX_THREAD_LIMIT 15000
+#endif
+
+/* Number of threads started in the child process in the absence
+ * of a ThreadsPerChild configuration directive
+ */
+#ifndef DEFAULT_THREADS_PER_CHILD
+#define DEFAULT_THREADS_PER_CHILD 64
+#endif
+
+/* Max number of child processes allowed.
+ */
+#define HARD_SERVER_LIMIT 1
+
+/* Number of servers to spawn off by default
+ */
+#ifndef DEFAULT_NUM_DAEMON
+#define DEFAULT_NUM_DAEMON 1
+#endif
+
+/* Check for definition of DEFAULT_REL_RUNTIMEDIR */
+#ifndef DEFAULT_REL_RUNTIMEDIR
+#define DEFAULT_REL_RUNTIMEDIR "logs"
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 0
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.c b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.c
new file mode 100644
index 00000000..6fc0ae60
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.c
@@ -0,0 +1,1728 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifdef WIN32
+
+#define CORE_PRIVATE 
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"	/* for read_config */ 
+#include "http_core.h"		/* for get_remote_host */ 
+#include "http_connection.h"
+#include "apr_portable.h"
+#include "apr_thread_proc.h"
+#include "apr_getopt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_shm.h"
+#include "apr_thread_mutex.h"
+#include "ap_mpm.h"
+#include "ap_config.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+#include "mpm_winnt.h"
+#include "mpm_common.h"
+#include <malloc.h>
+#include "apr_atomic.h"
+
+
+/* scoreboard.c does the heavy lifting; all we do is create the child
+ * score by moving a handle down the pipe into the child's stdin.
+ */
+extern apr_shm_t *ap_scoreboard_shm;
+server_rec *ap_server_conf;
+
+/* Definitions of WINNT MPM specific config globals */
+static HANDLE shutdown_event;	/* used to signal the parent to shutdown */
+static HANDLE restart_event;	/* used to signal the parent to restart */
+
+static char ap_coredump_dir[MAX_STRING_LEN];
+
+static int one_process = 0;
+static char const* signal_arg = NULL;
+
+OSVERSIONINFO osver; /* VER_PLATFORM_WIN32_NT */
+
+static DWORD parent_pid;
+DWORD my_pid;
+
+int ap_threads_per_child = 0;
+int use_acceptex = 1;
+static int thread_limit = DEFAULT_THREAD_LIMIT;
+static int first_thread_limit = 0;
+static int changed_limit_at_restart;
+int winnt_mpm_state = AP_MPMQ_STARTING;
+/* ap_my_generation are used by the scoreboard code */
+ap_generation_t volatile ap_my_generation=0;
+
+
+/* shared by service.c as global, although 
+ * perhaps it should be private.
+ */
+apr_pool_t *pconf;
+
+
+/* definitions from child.c */
+void child_main(apr_pool_t *pconf);
+
+/* used by parent to signal the child to start and exit
+ * NOTE: these are not sophisticated enough for multiple children
+ * so they ultimately should not be shared with child.c
+ */
+extern apr_proc_mutex_t *start_mutex;
+extern HANDLE exit_event;  
+
+/* Only one of these, the pipe from our parent, ment only for
+ * one child worker's consumption (not to be inherited!)
+ * XXX: decorate this name for the trunk branch, was left simplified
+ *      only to make the 2.2 patch trivial to read.
+ */
+static HANDLE pipe;
+
+/* Stub functions until this MPM supports the connection status API */
+
+AP_DECLARE(void) ap_update_connection_status(long conn_id, const char *key, \
+                                             const char *value)
+{
+    /* NOP */
+}
+
+AP_DECLARE(void) ap_reset_connection_status(long conn_id)
+{
+    /* NOP */
+}
+
+AP_DECLARE(apr_array_header_t *) ap_get_status_table(apr_pool_t *p)
+{
+    /* NOP */
+    return NULL;
+}
+
+/* 
+ * Command processors 
+ */
+
+static const char *set_threads_per_child (cmd_parms *cmd, void *dummy, char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_per_child = atoi(arg);
+    if (ap_threads_per_child > thread_limit) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
+                     "value of %d threads,", ap_threads_per_child, 
+                     thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL,
+                     " lowering ThreadsPerChild to %d. To increase, please"
+                     " see the", thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " ThreadLimit directive.");
+        ap_threads_per_child = thread_limit;
+    }
+    else if (ap_threads_per_child < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadsPerChild > 0, setting to 1");
+	ap_threads_per_child = 1;
+    }
+    return NULL;
+}
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_thread_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_thread_limit = atoi(arg);
+    /* you cannot change ThreadLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_thread_limit &&
+        tmp_thread_limit != thread_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    thread_limit = tmp_thread_limit;
+    
+    if (thread_limit > MAX_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ThreadLimit of %d exceeds compile time limit "
+                    "of %d threads,", thread_limit, MAX_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
+       thread_limit = MAX_THREAD_LIMIT;
+    } 
+    else if (thread_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadLimit > 0, setting to 1");
+	thread_limit = 1;
+    }
+    return NULL;
+}
+static const char *set_disable_acceptex(cmd_parms *cmd, void *dummy, char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+    if (use_acceptex) {
+        use_acceptex = 0;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, NULL, 
+                     "Disabled use of AcceptEx() WinSock2 API");
+    }
+    return NULL;
+}
+
+static const command_rec winnt_cmds[] = {
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
+  "Number of threads each child creates" ),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+  "Maximum worker threads in a server for this run of Apache"),
+AP_INIT_NO_ARGS("Win32DisableAcceptEx", set_disable_acceptex, NULL, RSRC_CONF,
+  "Disable use of the high performance AcceptEx WinSock2 API to work around buggy VPN or Firewall software"),
+{ NULL }
+};
+
+
+/*
+ * Signalling Apache on NT.
+ *
+ * Under Unix, Apache can be told to shutdown or restart by sending various
+ * signals (HUP, USR, TERM). On NT we don't have easy access to signals, so
+ * we use "events" instead. The parent apache process goes into a loop
+ * where it waits forever for a set of events. Two of those events are
+ * called
+ *
+ *    apPID_shutdown
+ *    apPID_restart
+ *
+ * (where PID is the PID of the apache parent process). When one of these
+ * is signalled, the Apache parent performs the appropriate action. The events
+ * can become signalled through internal Apache methods (e.g. if the child
+ * finds a fatal error and needs to kill its parent), via the service
+ * control manager (the control thread will signal the shutdown event when
+ * requested to stop the Apache service), from the -k Apache command line,
+ * or from any external program which finds the Apache PID from the
+ * httpd.pid file.
+ *
+ * The signal_parent() function, below, is used to signal one of these events.
+ * It can be called by any child or parent process, since it does not
+ * rely on global variables.
+ *
+ * On entry, type gives the event to signal. 0 means shutdown, 1 means 
+ * graceful restart.
+ */
+/*
+ * Initialise the signal names, in the global variables signal_name_prefix, 
+ * signal_restart_name and signal_shutdown_name.
+ */
+#define MAX_SIGNAL_NAME 30  /* Long enough for apPID_shutdown, where PID is an int */
+char signal_name_prefix[MAX_SIGNAL_NAME];
+char signal_restart_name[MAX_SIGNAL_NAME]; 
+char signal_shutdown_name[MAX_SIGNAL_NAME];
+void setup_signal_names(char *prefix)
+{
+    apr_snprintf(signal_name_prefix, sizeof(signal_name_prefix), prefix);    
+    apr_snprintf(signal_shutdown_name, sizeof(signal_shutdown_name), 
+	"%s_shutdown", signal_name_prefix);    
+    apr_snprintf(signal_restart_name, sizeof(signal_restart_name), 
+	"%s_restart", signal_name_prefix);    
+}
+
+int volatile is_graceful = 0;
+
+AP_DECLARE(int) ap_graceful_stop_signalled(void)
+{
+    return is_graceful;
+}
+
+AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type)
+{
+    HANDLE e;
+    char *signal_name;
+    
+    if (parent_pid == my_pid) {
+        switch(type) {
+           case SIGNAL_PARENT_SHUTDOWN: 
+           {
+               SetEvent(shutdown_event); 
+               break;
+           }
+           /* This MPM supports only graceful restarts right now */
+           case SIGNAL_PARENT_RESTART: 
+           case SIGNAL_PARENT_RESTART_GRACEFUL:
+           {
+               is_graceful = 1;
+               SetEvent(restart_event); 
+               break;
+           }
+        }
+	return;
+    }
+
+    switch(type) {
+       case SIGNAL_PARENT_SHUTDOWN: 
+       {
+           signal_name = signal_shutdown_name; 
+           break;
+       }
+       /* This MPM supports only graceful restarts right now */
+       case SIGNAL_PARENT_RESTART: 
+       case SIGNAL_PARENT_RESTART_GRACEFUL:
+       {
+           signal_name = signal_restart_name;     
+           is_graceful = 1;
+           break;
+       }
+       default: 
+           return;
+    }
+
+    e = OpenEvent(EVENT_MODIFY_STATE, FALSE, signal_name);
+    if (!e) {
+	/* Um, problem, can't signal the parent, which means we can't
+	 * signal ourselves to die. Ignore for now...
+	 */
+	ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf,
+                     "OpenEvent on %s event", signal_name);
+	return;
+    }
+    if (SetEvent(e) == 0) {
+	/* Same problem as above */
+	ap_log_error(APLOG_MARK, APLOG_EMERG, apr_get_os_error(), ap_server_conf,
+                     "SetEvent on %s event", signal_name);
+	CloseHandle(e);
+	return;
+    }
+    CloseHandle(e);
+}
+
+
+/*
+ * Passed the following handles [in sync with send_handles_to_child()]
+ *
+ *   ready event [signal the parent immediately, then close]
+ *   exit event  [save to poll later]
+ *   start mutex [signal from the parent to begin accept()]
+ *   scoreboard shm handle [to recreate the ap_scoreboard]
+ */
+void get_handles_from_parent(server_rec *s, HANDLE *child_exit_event,
+                             apr_proc_mutex_t **child_start_mutex,
+                             apr_shm_t **scoreboard_shm)
+{
+    HANDLE hScore;
+    HANDLE ready_event;
+    HANDLE os_start;
+    DWORD BytesRead;
+    void *sb_shared;
+    apr_status_t rv;
+    
+    /* *** We now do this was back in winnt_rewrite_args
+     * pipe = GetStdHandle(STD_INPUT_HANDLE);
+     */
+    if (!ReadFile(pipe, &ready_event, sizeof(HANDLE),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(HANDLE))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the ready event from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    SetEvent(ready_event);
+    CloseHandle(ready_event);
+
+    if (!ReadFile(pipe, child_exit_event, sizeof(HANDLE),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(HANDLE))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the exit event from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    if (!ReadFile(pipe, &os_start, sizeof(os_start),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(os_start))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the start_mutex from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    *child_start_mutex = NULL;
+    if ((rv = apr_os_proc_mutex_put(child_start_mutex, &os_start, s->process->pool))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Child %d: Unable to access the start_mutex from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    if (!ReadFile(pipe, &hScore, sizeof(hScore),
+                  &BytesRead, (LPOVERLAPPED) NULL)
+        || (BytesRead != sizeof(hScore))) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Child %d: Unable to retrieve the scoreboard from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    *scoreboard_shm = NULL;
+    if ((rv = apr_os_shm_put(scoreboard_shm, &hScore, s->process->pool)) 
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Child %d: Unable to access the scoreboard from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+
+    rv = ap_reopen_scoreboard(s->process->pool, scoreboard_shm, 1);
+    if (rv || !(sb_shared = apr_shm_baseaddr_get(*scoreboard_shm))) {
+	ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, 
+                     "Child %d: Unable to reopen the scoreboard from the parent", my_pid);
+        exit(APEXIT_CHILDINIT);
+    }
+    /* We must 'initialize' the scoreboard to relink all the
+     * process-local pointer arrays into the shared memory block.
+     */
+    ap_init_scoreboard(sb_shared);
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Child %d: Retrieved our scoreboard from the parent.", my_pid);
+}
+
+
+static int send_handles_to_child(apr_pool_t *p, 
+                                 HANDLE child_ready_event,
+                                 HANDLE child_exit_event, 
+                                 apr_proc_mutex_t *child_start_mutex,
+                                 apr_shm_t *scoreboard_shm,
+                                 HANDLE hProcess, 
+                                 apr_file_t *child_in)
+{
+    apr_status_t rv;
+    HANDLE hCurrentProcess = GetCurrentProcess();
+    HANDLE hDup;
+    HANDLE os_start;
+    HANDLE hScore;
+    DWORD BytesWritten;
+
+    if (!DuplicateHandle(hCurrentProcess, child_ready_event, hProcess, &hDup,
+        EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the ready event handle for the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the exit event handle to the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, child_exit_event, hProcess, &hDup,
+                         EVENT_MODIFY_STATE | SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the exit event handle for the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the exit event handle to the child");
+        return -1;
+    }
+    if ((rv = apr_os_proc_mutex_get(&os_start, child_start_mutex)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to retrieve the start mutex for the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, os_start, hProcess, &hDup,
+                         SYNCHRONIZE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the start mutex to the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the start mutex to the child");
+        return -1;
+    }
+    if ((rv = apr_os_shm_get(&hScore, scoreboard_shm)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to retrieve the scoreboard handle for the child");
+        return -1;
+    }
+    if (!DuplicateHandle(hCurrentProcess, hScore, hProcess, &hDup,
+                         FILE_MAP_READ | FILE_MAP_WRITE, FALSE, 0)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Unable to duplicate the scoreboard handle to the child");
+        return -1;
+    }
+    if ((rv = apr_file_write_full(child_in, &hDup, sizeof(hDup), &BytesWritten))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Unable to send the scoreboard handle to the child");
+        return -1;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Parent: Sent the scoreboard to the child");
+    return 0;
+}
+
+
+/* 
+ * get_listeners_from_parent()
+ * The listen sockets are opened in the parent. This function, which runs
+ * exclusively in the child process, receives them from the parent and
+ * makes them availeble in the child.
+ */
+void get_listeners_from_parent(server_rec *s)
+{
+    WSAPROTOCOL_INFO WSAProtocolInfo;
+    ap_listen_rec *lr;
+    DWORD BytesRead;
+    int lcnt = 0;
+    SOCKET nsd;
+
+    /* Set up a default listener if necessary */
+    if (ap_listeners == NULL) {
+        ap_listen_rec *lr;
+        lr = apr_palloc(s->process->pool, sizeof(ap_listen_rec));
+        lr->sd = NULL;
+        lr->next = ap_listeners;
+        ap_listeners = lr;
+    }
+
+    /* Open the pipe to the parent process to receive the inherited socket
+     * data. The sockets have been set to listening in the parent process.
+     *
+     * *** We now do this was back in winnt_rewrite_args
+     * pipe = GetStdHandle(STD_INPUT_HANDLE);
+     */
+    for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        if (!ReadFile(pipe, &WSAProtocolInfo, sizeof(WSAPROTOCOL_INFO), 
+                      &BytesRead, (LPOVERLAPPED) NULL)) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                         "setup_inherited_listeners: Unable to read socket data from parent");
+            exit(APEXIT_CHILDINIT);
+        }
+        nsd = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO,
+                        &WSAProtocolInfo, 0, 0);
+        if (nsd == INVALID_SOCKET) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf,
+                         "Child %d: setup_inherited_listeners(), WSASocket failed to open the inherited socket.", my_pid);
+            exit(APEXIT_CHILDINIT);
+        }
+
+        if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
+            HANDLE hProcess = GetCurrentProcess();
+            HANDLE dup;
+            if (DuplicateHandle(hProcess, (HANDLE) nsd, hProcess, &dup, 
+                                0, FALSE, DUPLICATE_SAME_ACCESS)) {
+                closesocket(nsd);
+                nsd = (SOCKET) dup;
+            }
+        }
+        else {
+            /* A different approach.  Many users report errors such as 
+             * (32538)An operation was attempted on something that is not 
+             * a socket.  : Parent: WSADuplicateSocket failed...
+             *
+             * This appears that the duplicated handle is no longer recognized
+             * as a socket handle.  SetHandleInformation should overcome that
+             * problem by not altering the handle identifier.  But this won't
+             * work on 9x - it's unsupported.
+             */
+            if (!SetHandleInformation((HANDLE)nsd, HANDLE_FLAG_INHERIT, 0)) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), ap_server_conf,
+                             "set_listeners_noninheritable: SetHandleInformation failed.");
+            }
+        }
+        apr_os_sock_put(&lr->sd, &nsd, s->process->pool);
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Child %d: retrieved %d listeners from parent", my_pid, lcnt);
+}
+
+
+static int send_listeners_to_child(apr_pool_t *p, DWORD dwProcessId, 
+                                   apr_file_t *child_in)
+{
+    apr_status_t rv;
+    int lcnt = 0;
+    ap_listen_rec *lr;
+    LPWSAPROTOCOL_INFO  lpWSAProtocolInfo;
+    DWORD BytesWritten;
+
+    /* Run the chain of open sockets. For each socket, duplicate it 
+     * for the target process then send the WSAPROTOCOL_INFO 
+     * (returned by dup socket) to the child.
+     */
+    for (lr = ap_listeners; lr; lr = lr->next, ++lcnt) {
+        int nsd;
+        lpWSAProtocolInfo = apr_pcalloc(p, sizeof(WSAPROTOCOL_INFO));
+        apr_os_sock_get(&nsd,lr->sd);
+        ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS, ap_server_conf,
+                     "Parent: Duplicating socket %d and sending it to child process %d", 
+                     nsd, dwProcessId);
+        if (WSADuplicateSocket(nsd, dwProcessId,
+                               lpWSAProtocolInfo) == SOCKET_ERROR) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_netos_error(), ap_server_conf,
+                         "Parent: WSADuplicateSocket failed for socket %d. Check the FAQ.", lr->sd );
+            return -1;
+        }
+
+        if ((rv = apr_file_write_full(child_in, lpWSAProtocolInfo, 
+                                      sizeof(WSAPROTOCOL_INFO), &BytesWritten))
+                != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                         "Parent: Unable to write duplicated socket %d to the child.", lr->sd );
+            return -1;
+        }
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                 "Parent: Sent %d listeners to child %d", lcnt, dwProcessId);
+    return 0;
+}
+
+enum waitlist_e {
+    waitlist_ready = 0,
+    waitlist_term = 1
+};
+
+static int create_process(apr_pool_t *p, HANDLE *child_proc, HANDLE *child_exit_event, 
+                          DWORD *child_pid)
+{
+    /* These NEVER change for the lifetime of this parent 
+     */
+    static char **args = NULL;
+    static char pidbuf[28];
+
+    apr_status_t rv;
+    apr_pool_t *ptemp;
+    apr_procattr_t *attr;
+    apr_proc_t new_child;
+    apr_file_t *child_out, *child_err;
+    HANDLE hExitEvent;
+    HANDLE waitlist[2];  /* see waitlist_e */
+    char *cmd;
+    char *cwd;
+    char **env;
+    int envc;
+
+    apr_pool_sub_make(&ptemp, p, NULL);
+
+    /* Build the command line. Should look something like this:
+     * C:/apache/bin/apache.exe -f ap_server_confname 
+     * First, get the path to the executable...
+     */
+    apr_procattr_create(&attr, ptemp);
+    apr_procattr_cmdtype_set(attr, APR_PROGRAM);
+    apr_procattr_detach_set(attr, 1);
+    if (((rv = apr_filepath_get(&cwd, 0, ptemp)) != APR_SUCCESS)
+           || ((rv = apr_procattr_dir_set(attr, cwd)) != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Failed to get the current path");
+    }
+
+    if (!args) {
+        /* Build the args array, only once since it won't change 
+         * for the lifetime of this parent process.
+         */
+        if ((rv = ap_os_proc_filepath(&cmd, ptemp))
+                != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT, ERROR_BAD_PATHNAME, ap_server_conf,
+                         "Parent: Failed to get full path of %s", 
+                         ap_server_conf->process->argv[0]);
+            apr_pool_destroy(ptemp);
+            return -1;
+        }
+        
+        args = malloc((ap_server_conf->process->argc + 1) * sizeof (char*));
+        memcpy(args + 1, ap_server_conf->process->argv + 1, 
+               (ap_server_conf->process->argc - 1) * sizeof (char*));
+        args[0] = malloc(strlen(cmd) + 1);
+        strcpy(args[0], cmd);
+        args[ap_server_conf->process->argc] = NULL;
+    }
+    else {
+        cmd = args[0];
+    }
+
+    /* Create a pipe to send handles to the child */
+    if ((rv = apr_procattr_io_set(attr, APR_FULL_BLOCK, 
+                                  APR_NO_PIPE, APR_NO_PIPE)) != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                        "Parent: Unable to create child stdin pipe.");
+        apr_pool_destroy(ptemp);
+        return -1;
+    }
+
+    /* httpd-2.0/2.2 specific to work around apr_proc_create bugs */
+    /* set "NUL" as sysout for the child */
+    if (((rv = apr_file_open(&child_out, "NUL", APR_WRITE | APR_READ, APR_OS_DEFAULT,p)) 
+            != APR_SUCCESS) ||
+        ((rv = apr_procattr_child_out_set(attr, child_out, NULL))
+            != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                     "Parent: Could not set child process stdout");
+    }
+    if (((rv = apr_file_open_stderr(&child_err, p))
+            != APR_SUCCESS) ||
+        ((rv = apr_procattr_child_err_set(attr, child_err, NULL))
+            != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, rv, ap_server_conf,
+                     "Parent: Could not set child process stderr");
+    }
+
+    /* Create the child_ready_event */
+    waitlist[waitlist_ready] = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!waitlist[waitlist_ready]) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Could not create ready event for child process");
+        apr_pool_destroy (ptemp);
+        return -1;
+    }
+
+    /* Create the child_exit_event */
+    hExitEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!hExitEvent) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "Parent: Could not create exit event for child process");
+        apr_pool_destroy(ptemp);
+        CloseHandle(waitlist[waitlist_ready]);
+        return -1;
+    }
+
+    /* Build the env array */
+    for (envc = 0; _environ[envc]; ++envc) {
+        ;
+    }
+    env = apr_palloc(ptemp, (envc + 2) * sizeof (char*));  
+    memcpy(env, _environ, envc * sizeof (char*));
+    apr_snprintf(pidbuf, sizeof(pidbuf), "AP_PARENT_PID=%i", parent_pid);
+    env[envc] = pidbuf;
+    env[envc + 1] = NULL;
+
+    rv = apr_proc_create(&new_child, cmd, args, env, attr, ptemp);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "Parent: Failed to create the child process.");
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(waitlist[waitlist_ready]);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+    apr_file_close(child_out);
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                 "Parent: Created child process %d", new_child.pid);
+
+    if (send_handles_to_child(ptemp, waitlist[waitlist_ready], hExitEvent,
+                              start_mutex, ap_scoreboard_shm,
+                              new_child.hproc, new_child.in)) {
+        /*
+         * This error is fatal, mop up the child and move on
+         * We toggle the child's exit event to cause this child 
+         * to quit even as it is attempting to start.
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(waitlist[waitlist_ready]);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    /* Important:
+     * Give the child process a chance to run before dup'ing the sockets.
+     * We have already set the listening sockets noninheritable, but if 
+     * WSADuplicateSocket runs before the child process initializes
+     * the listeners will be inherited anyway.
+     */
+    waitlist[waitlist_term] = new_child.hproc;
+    rv = WaitForMultipleObjects(2, waitlist, FALSE, INFINITE);
+    CloseHandle(waitlist[waitlist_ready]);
+    if (rv != WAIT_OBJECT_0) {
+        /* 
+         * Outch... that isn't a ready signal. It's dead, Jim!
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    if (send_listeners_to_child(ptemp, new_child.pid, new_child.in)) {
+        /*
+         * This error is fatal, mop up the child and move on
+         * We toggle the child's exit event to cause this child 
+         * to quit even as it is attempting to start.
+         */
+        SetEvent(hExitEvent);
+        apr_pool_destroy(ptemp);
+        CloseHandle(hExitEvent);
+        CloseHandle(new_child.hproc);
+        return -1;
+    }
+
+    apr_file_close(new_child.in);
+
+    *child_exit_event = hExitEvent;
+    *child_proc = new_child.hproc;
+    *child_pid = new_child.pid;
+
+    return 0;
+}
+
+/***********************************************************************
+ * master_main()
+ * master_main() runs in the parent process.  It creates the child 
+ * process which handles HTTP requests then waits on one of three 
+ * events:
+ *
+ * restart_event
+ * -------------
+ * The restart event causes master_main to start a new child process and
+ * tells the old child process to exit (by setting the child_exit_event).
+ * The restart event is set as a result of one of the following:
+ * 1. An apache -k restart command on the command line
+ * 2. A command received from Windows service manager which gets 
+ *    translated into an ap_signal_parent(SIGNAL_PARENT_RESTART)
+ *    call by code in service.c.
+ * 3. The child process calling ap_signal_parent(SIGNAL_PARENT_RESTART)
+ *    as a result of hitting MaxRequestsPerChild.
+ *
+ * shutdown_event 
+ * --------------
+ * The shutdown event causes master_main to tell the child process to 
+ * exit and that the server is shutting down. The shutdown event is
+ * set as a result of one of the following:
+ * 1. An apache -k shutdown command on the command line
+ * 2. A command received from Windows service manager which gets
+ *    translated into an ap_signal_parent(SIGNAL_PARENT_SHUTDOWN)
+ *    call by code in service.c.
+ *
+ * child process handle
+ * --------------------
+ * The child process handle will be signaled if the child process 
+ * exits for any reason. In a normal running server, the signaling
+ * of this event means that the child process has exited prematurely
+ * due to a seg fault or other irrecoverable error. For server
+ * robustness, master_main will restart the child process under this 
+ * condtion.
+ *
+ * master_main uses the child_exit_event to signal the child process
+ * to exit.
+ **********************************************************************/
+#define NUM_WAIT_HANDLES 3
+#define CHILD_HANDLE     0
+#define SHUTDOWN_HANDLE  1
+#define RESTART_HANDLE   2
+static int master_main(server_rec *s, HANDLE shutdown_event, HANDLE restart_event)
+{
+    int rv, cld;
+    int restart_pending;
+    int shutdown_pending;
+    HANDLE child_exit_event;
+    HANDLE event_handles[NUM_WAIT_HANDLES];
+    DWORD child_pid;
+
+    restart_pending = shutdown_pending = 0;
+
+    event_handles[SHUTDOWN_HANDLE] = shutdown_event;
+    event_handles[RESTART_HANDLE] = restart_event;
+
+    /* Create a single child process */
+    rv = create_process(pconf, &event_handles[CHILD_HANDLE], 
+                        &child_exit_event, &child_pid);
+    if (rv < 0) 
+    {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "master_main: create child process failed. Exiting.");
+        shutdown_pending = 1;
+        goto die_now;
+    }
+    if (!strcasecmp(signal_arg, "runservice")) {
+        mpm_service_started();
+    }
+
+    /* Update the scoreboard. Note that there is only a single active
+     * child at once.
+     */
+    ap_scoreboard_image->parent[0].quiescing = 0;
+    ap_scoreboard_image->parent[0].pid = child_pid;
+
+    /* Wait for shutdown or restart events or for child death */
+    winnt_mpm_state = AP_MPMQ_RUNNING;
+    rv = WaitForMultipleObjects(NUM_WAIT_HANDLES, (HANDLE *) event_handles, FALSE, INFINITE);
+    cld = rv - WAIT_OBJECT_0;
+    if (rv == WAIT_FAILED) {
+        /* Something serious is wrong */
+        ap_log_error(APLOG_MARK,APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                     "master_main: WaitForMultipeObjects WAIT_FAILED -- doing server shutdown");
+        shutdown_pending = 1;
+    }
+    else if (rv == WAIT_TIMEOUT) {
+        /* Hey, this cannot happen */
+        ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                     "master_main: WaitForMultipeObjects with INFINITE wait exited with WAIT_TIMEOUT");
+        shutdown_pending = 1;
+    }
+    else if (cld == SHUTDOWN_HANDLE) {
+        /* shutdown_event signalled */
+        shutdown_pending = 1;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, s, 
+                     "Parent: Received shutdown signal -- Shutting down the server.");
+        if (ResetEvent(shutdown_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                         "ResetEvent(shutdown_event)");
+        }
+    }
+    else if (cld == RESTART_HANDLE) {
+        /* Received a restart event. Prepare the restart_event to be reused 
+         * then signal the child process to exit. 
+         */
+        restart_pending = 1;
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s, 
+                     "Parent: Received restart signal -- Restarting the server.");
+        if (ResetEvent(restart_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                         "Parent: ResetEvent(restart_event) failed.");
+        }
+        if (SetEvent(child_exit_event) == 0) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, apr_get_os_error(), s,
+                         "Parent: SetEvent for child process %d failed.", 
+                         event_handles[CHILD_HANDLE]);
+        }
+        /* Don't wait to verify that the child process really exits, 
+         * just move on with the restart.
+         */
+        CloseHandle(event_handles[CHILD_HANDLE]);
+        event_handles[CHILD_HANDLE] = NULL;
+    }
+    else {
+        /* The child process exited prematurely due to a fatal error. */
+        DWORD exitcode;
+        if (!GetExitCodeProcess(event_handles[CHILD_HANDLE], &exitcode)) {
+            /* HUH? We did exit, didn't we? */
+            exitcode = APEXIT_CHILDFATAL;
+        }
+        if (   exitcode == APEXIT_CHILDFATAL 
+            || exitcode == APEXIT_CHILDINIT
+            || exitcode == APEXIT_INIT) {
+            ap_log_error(APLOG_MARK, APLOG_ERR, 0, ap_server_conf, 
+                         "Parent: child process exited with status %u -- Aborting.", exitcode);
+        }
+        else {
+            int i;
+            restart_pending = 1;
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf, 
+                         "Parent: child process exited with status %u -- Restarting.", exitcode);
+            for (i = 0; i < ap_threads_per_child; i++) {
+                ap_update_child_status_from_indexes(0, i, SERVER_DEAD, NULL);
+            }
+        }
+        CloseHandle(event_handles[CHILD_HANDLE]);
+        event_handles[CHILD_HANDLE] = NULL;
+    }
+    if (restart_pending) {
+        ++ap_my_generation;
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+    }
+die_now:
+    if (shutdown_pending) 
+    {
+        int timeout = 30000;  /* Timeout is milliseconds */
+        winnt_mpm_state = AP_MPMQ_STOPPING;
+
+        /* This shutdown is only marginally graceful. We will give the 
+         * child a bit of time to exit gracefully. If the time expires,
+         * the child will be wacked.
+         */
+        if (!strcasecmp(signal_arg, "runservice")) {
+            mpm_service_stopping();
+        }
+        /* Signal the child processes to exit */
+        if (SetEvent(child_exit_event) == 0) {
+                ap_log_error(APLOG_MARK,APLOG_ERR, apr_get_os_error(), ap_server_conf,
+                             "Parent: SetEvent for child process %d failed", event_handles[CHILD_HANDLE]);
+        }
+        if (event_handles[CHILD_HANDLE]) {
+            rv = WaitForSingleObject(event_handles[CHILD_HANDLE], timeout);
+            if (rv == WAIT_OBJECT_0) {
+                ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                             "Parent: Child process exited successfully.");
+                CloseHandle(event_handles[CHILD_HANDLE]);
+                event_handles[CHILD_HANDLE] = NULL;
+            }
+            else {
+                ap_log_error(APLOG_MARK,APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                             "Parent: Forcing termination of child process %d ", event_handles[CHILD_HANDLE]);
+                TerminateProcess(event_handles[CHILD_HANDLE], 1);
+                CloseHandle(event_handles[CHILD_HANDLE]);
+                event_handles[CHILD_HANDLE] = NULL;
+            }
+        }
+        CloseHandle(child_exit_event);
+        return 0;  /* Tell the caller we do not want to restart */
+    }
+    winnt_mpm_state = AP_MPMQ_STARTING;
+    CloseHandle(child_exit_event);
+    return 1;      /* Tell the caller we want a restart */
+}
+
+/* service_nt_main_fn needs to append the StartService() args 
+ * outside of our call stack and thread as the service starts...
+ */
+apr_array_header_t *mpm_new_argv;
+
+/* Remember service_to_start failures to log and fail in pre_config.
+ * Remember inst_argc and inst_argv for installing or starting the
+ * service after we preflight the config.
+ */
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = MAXIMUM_WAIT_OBJECTS;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_STATIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_NOT_SUPPORTED;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = HARD_SERVER_LIMIT;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = winnt_mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+} 
+
+#define SERVICE_UNSET (-1)
+static apr_status_t service_set = SERVICE_UNSET;
+static apr_status_t service_to_start_success;
+static int inst_argc;
+static const char * const *inst_argv;
+static char *service_name = NULL;
+    
+void winnt_rewrite_args(process_rec *process) 
+{
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k runservice [transition for WinNT, nothing for Win9x]
+     *   -k (!)install [error out if name is not installed]
+     *   -k uninstall
+     *   -k stop
+     *   -k shutdown (same as -k stop). Maintained for backward compatability.
+     *
+     * We can't leave this phase until we know our identity
+     * and modify the command arguments appropriately.
+     *
+     * We do not care if the .conf file exists or is parsable when
+     * attempting to stop or uninstall a service.
+     */
+    apr_status_t rv;
+    char *def_server_root;
+    char *binpath;
+    char optbuf[3];
+    const char *optarg;
+    int fixed_args;
+    char *pid;
+    apr_getopt_t *opt;
+    int running_as_service = 1;
+    int errout = 0;
+
+    pconf = process->pconf;
+
+    osver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
+    GetVersionEx(&osver);
+
+    /* AP_PARENT_PID is only valid in the child */
+    pid = getenv("AP_PARENT_PID");
+    if (pid) 
+    {
+        HANDLE filehand;
+        HANDLE hproc = GetCurrentProcess();
+
+        /* This is the child */
+        my_pid = GetCurrentProcessId();
+        parent_pid = (DWORD) atol(pid);
+
+        /* Prevent holding open the (nonexistant) console */
+        real_exit_code = 0;
+
+        /* The parent gave us stdin, we need to remember this
+         * handle, and no longer inherit it at our children
+         * (we can't slurp it up now, we just aren't ready yet).
+         * The original handle is closed below, at apr_file_dup2()
+         */
+        pipe = GetStdHandle(STD_INPUT_HANDLE);
+        if (DuplicateHandle(hproc, pipe,
+                            hproc, &filehand, 0, FALSE,
+                            DUPLICATE_SAME_ACCESS)) {
+            pipe = filehand;
+        }
+
+        /* The parent gave us stdout of the NUL device,
+         * and expects us to suck up stdin of all of our
+         * shared handles and data from the parent.
+         * Don't infect child processes with our stdin
+         * handle, use another handle to NUL!
+         */
+        {
+            apr_file_t *infile, *outfile;
+            if ((apr_file_open_stdout(&outfile, process->pool) == APR_SUCCESS)
+             && (apr_file_open_stdin(&infile, process->pool) == APR_SUCCESS))
+                apr_file_dup2(infile, outfile, process->pool);
+        }
+
+        /* This child needs the existing stderr opened for logging,
+         * already 
+         */
+
+        /* The parent is responsible for providing the
+         * COMPLETE ARGUMENTS REQUIRED to the child.
+         *
+         * No further argument parsing is needed, but
+         * for good measure we will provide a simple
+         * signal string for later testing.
+         */
+        signal_arg = "runchild";
+        return;
+    }
+    
+    /* This is the parent, we have a long way to go :-) */
+    parent_pid = my_pid = GetCurrentProcessId();
+
+    /* This behavior is voided by setting real_exit_code to 0 */
+    atexit(hold_console_open_on_error);
+
+    /* Rewrite process->argv[]; 
+     *
+     * strip out -k signal into signal_arg
+     * strip out -n servicename and set the names
+     * add default -d serverroot from the path of this executable
+     * 
+     * The end result will look like:
+     *
+     * The invocation command (%0)
+     *     The -d serverroot default from the running executable
+     *         The requested service's (-n) registry ConfigArgs
+     *             The WinNT SCM's StartService() args
+     */
+    if ((rv = ap_os_proc_filepath(&binpath, process->pconf))
+            != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK,APLOG_CRIT, rv, NULL, 
+                     "Failed to get the full path of %s", process->argv[0]);
+        exit(APEXIT_INIT);
+    }
+    /* WARNING: There is an implict assumption here that the
+     * executable resides in ServerRoot or ServerRoot\bin
+     */
+    def_server_root = (char *) apr_filename_of_pathname(binpath);
+    if (def_server_root > binpath) {
+        *(def_server_root - 1) = '\0';
+        def_server_root = (char *) apr_filename_of_pathname(binpath);
+        if (!strcasecmp(def_server_root, "bin"))
+            *(def_server_root - 1) = '\0';
+    }
+    apr_filepath_merge(&def_server_root, NULL, binpath, 
+                       APR_FILEPATH_TRUENAME, process->pool);
+
+    /* Use process->pool so that the rewritten argv
+     * lasts for the lifetime of the server process,
+     * because pconf will be destroyed after the 
+     * initial pre-flight of the config parser.
+     */
+    mpm_new_argv = apr_array_make(process->pool, process->argc + 2,
+                                  sizeof(const char *));
+    *(const char **)apr_array_push(mpm_new_argv) = process->argv[0];
+    *(const char **)apr_array_push(mpm_new_argv) = "-d";
+    *(const char **)apr_array_push(mpm_new_argv) = def_server_root;
+
+    fixed_args = mpm_new_argv->nelts;
+
+    optbuf[0] = '-';
+    optbuf[2] = '\0';
+    apr_getopt_init(&opt, process->pool, process->argc, (char**) process->argv);
+    opt->errfn = NULL;
+    while ((rv = apr_getopt(opt, "wn:k:" AP_SERVER_BASEARGS, 
+                            optbuf + 1, &optarg)) == APR_SUCCESS) {
+        switch (optbuf[1]) {
+
+        /* Shortcuts; include the -w option to hold the window open on error.
+         * This must not be toggled once we reset real_exit_code to 0!
+         */
+        case 'w':
+            if (real_exit_code)
+                real_exit_code = 2;
+            break;
+
+        case 'n':
+            service_set = mpm_service_set_name(process->pool, &service_name, 
+                                               optarg);
+            break;
+
+        case 'k':
+            signal_arg = optarg;
+            break;
+
+        case 'E':
+            errout = 1;
+            /* Fall through so the Apache main() handles the 'E' arg */
+        default:
+            *(const char **)apr_array_push(mpm_new_argv) =
+                apr_pstrdup(process->pool, optbuf);
+
+            if (optarg) {
+                *(const char **)apr_array_push(mpm_new_argv) = optarg;
+            }
+            break;
+        }
+    }
+    
+    /* back up to capture the bad argument */
+    if (rv == APR_BADCH || rv == APR_BADARG) {
+        opt->ind--;
+    }
+
+    while (opt->ind < opt->argc) {
+        *(const char **)apr_array_push(mpm_new_argv) =
+            apr_pstrdup(process->pool, opt->argv[opt->ind++]);
+    }
+
+    /* Track the number of args actually entered by the user */
+    inst_argc = mpm_new_argv->nelts - fixed_args;
+
+    /* Provide a default 'run' -k arg to simplify signal_arg tests */
+    if (!signal_arg)
+    {
+        signal_arg = "run";
+        running_as_service = 0;
+    }
+
+    if (!strcasecmp(signal_arg, "runservice")) 
+    {
+        /* Start the NT Service _NOW_ because the WinNT SCM is 
+         * expecting us to rapidly assume control of our own 
+         * process, the SCM will tell us our service name, and
+         * may have extra StartService() command arguments to
+         * add for us.
+         *
+         * The SCM will generally invoke the executable with
+         * the c:\win\system32 default directory.  This is very
+         * lethal if folks use ServerRoot /foopath on windows
+         * without a drive letter.  Change to the default root
+         * (path to apache root, above /bin) for safety.
+         */
+        apr_filepath_set(def_server_root, process->pool);
+        
+        /* Any other process has a console, so we don't to begin
+         * a Win9x service until the configuration is parsed and
+         * any command line errors are reported.
+         *
+         * We hold the return value so that we can die in pre_config
+         * after logging begins, and the failure can land in the log.
+         */
+        if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT) 
+        {
+            apr_file_t *nullfile;
+
+            if (!errout) {
+                mpm_nt_eventlog_stderr_open(service_name, process->pool);
+            }
+            service_to_start_success = mpm_service_to_start(&service_name,
+                                                            process->pool);
+            if (service_to_start_success == APR_SUCCESS) {
+                service_set = APR_SUCCESS;
+            }
+
+            /* Open a null handle to soak stdout in this process.
+             * Windows service processes are missing any file handle
+             * usable for stdin/out/err.  This was the cause of later 
+             * trouble with invocations of apr_file_open_stdout()
+             */
+            if ((rv = apr_file_open(&nullfile, "NUL",
+                                    APR_READ | APR_WRITE, APR_OS_DEFAULT,
+                                    process->pool)) == APR_SUCCESS) {
+                apr_file_t *nullstdout;
+                if (apr_file_open_stdout(&nullstdout, process->pool)
+                        == APR_SUCCESS)
+                    apr_file_dup2(nullstdout, nullfile, process->pool);
+                apr_file_close(nullfile);
+            }
+        }
+    }
+
+    /* Get the default for any -k option, except run */
+    if (service_set == SERVICE_UNSET && strcasecmp(signal_arg, "run")) {
+        service_set = mpm_service_set_name(process->pool, &service_name,
+                                           AP_DEFAULT_SERVICE_NAME);
+    }
+
+    if (!strcasecmp(signal_arg, "install")) /* -k install */
+    {
+        if (service_set == APR_SUCCESS) 
+        {
+            ap_log_error(APLOG_MARK,APLOG_ERR, 0, NULL,
+                 "%s: Service is already installed.", service_name);
+            exit(APEXIT_INIT);
+        }
+    }
+    else if (running_as_service)
+    {
+        if (service_set == APR_SUCCESS) 
+        {
+            /* Attempt to Uninstall, or stop, before 
+             * we can read the arguments or .conf files
+             */
+            if (!strcasecmp(signal_arg, "uninstall")) {
+                rv = mpm_service_uninstall();
+                exit(rv);
+            }
+
+            if ((!strcasecmp(signal_arg, "stop")) || 
+                (!strcasecmp(signal_arg, "shutdown"))) {
+                mpm_signal_service(process->pool, 0);
+                exit(0);
+            }
+
+            rv = mpm_merge_service_args(process->pool, mpm_new_argv, 
+                                        fixed_args);
+            if (rv == APR_SUCCESS) {
+                ap_log_error(APLOG_MARK,APLOG_INFO, 0, NULL,
+                             "Using ConfigArgs of the installed service "
+                             "\"%s\".", service_name);
+            }
+            else  {
+                ap_log_error(APLOG_MARK,APLOG_WARNING, rv, NULL,
+                             "No installed ConfigArgs for the service "
+                             "\"%s\", using Apache defaults.", service_name);
+            }
+        }
+        else
+        {
+            ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL,
+                 "No installed service named \"%s\".", service_name);
+            exit(APEXIT_INIT);
+        }
+    }
+    if (strcasecmp(signal_arg, "install") && service_set && service_set != SERVICE_UNSET) 
+    {
+        ap_log_error(APLOG_MARK,APLOG_ERR, service_set, NULL,
+             "No installed service named \"%s\".", service_name);
+        exit(APEXIT_INIT);
+    }
+    
+    /* Track the args actually entered by the user.
+     * These will be used for the -k install parameters, as well as
+     * for the -k start service override arguments.
+     */
+    inst_argv = (const char * const *)mpm_new_argv->elts
+        + mpm_new_argv->nelts - inst_argc;
+
+    process->argc = mpm_new_argv->nelts; 
+    process->argv = (const char * const *) mpm_new_argv->elts;
+}
+
+
+static int winnt_pre_config(apr_pool_t *pconf_, apr_pool_t *plog, apr_pool_t *ptemp) 
+{
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k runservice [WinNT errors logged from rewrite_args]
+     */
+
+    /* Initialize shared static objects. 
+     */
+    pconf = pconf_;
+
+    if (ap_exists_config_define("ONE_PROCESS") ||
+        ap_exists_config_define("DEBUG"))
+        one_process = -1;
+
+    if (!strcasecmp(signal_arg, "runservice")
+            && (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+            && (service_to_start_success != APR_SUCCESS)) {
+        ap_log_error(APLOG_MARK,APLOG_CRIT, service_to_start_success, NULL, 
+                     "%s: Unable to start the service manager.",
+                     service_name);
+        exit(APEXIT_INIT);
+    }
+
+    /* Win9x: disable AcceptEx */
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
+        use_acceptex = 0;
+    }
+
+    ap_listen_pre_config();
+    ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    return OK;
+}
+
+static int winnt_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec* s)
+{
+    static int restart_num = 0;
+    apr_status_t rv = 0;
+
+    /* Handle the following SCM aspects in this phase:
+     *
+     *   -k install
+     *   -k config
+     *   -k start
+     *   -k restart
+     *   -k runservice [Win95, only once - after we parsed the config]
+     *
+     * because all of these signals are useful _only_ if there
+     * is a valid conf\httpd.conf environment to start.
+     *
+     * We reached this phase by avoiding errors that would cause
+     * these options to fail unexpectedly in another process.
+     */
+
+    if (!strcasecmp(signal_arg, "install")) {
+        rv = mpm_service_install(ptemp, inst_argc, inst_argv, 0);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+    if (!strcasecmp(signal_arg, "config")) {
+        rv = mpm_service_install(ptemp, inst_argc, inst_argv, 1);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+
+    if (!strcasecmp(signal_arg, "start")) {
+        ap_listen_rec *lr;
+
+        /* Close the listening sockets. */
+        for (lr = ap_listeners; lr; lr = lr->next) {
+            apr_socket_close(lr->sd);
+            lr->active = 0;
+        }
+        rv = mpm_service_start(ptemp, inst_argc, inst_argv);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+
+    if (!strcasecmp(signal_arg, "restart")) {
+        mpm_signal_service(ptemp, 1);
+        apr_pool_destroy(s->process->pool);
+        apr_terminate();
+        exit(rv);
+    }
+
+    if (parent_pid == my_pid) 
+    {
+        if (restart_num++ == 1) 
+        {
+            /* This code should be run once in the parent and not run
+             * across a restart
+             */
+            PSECURITY_ATTRIBUTES sa = GetNullACL();  /* returns NULL if invalid (Win95?) */
+            setup_signal_names(apr_psprintf(pconf,"ap%d", parent_pid));
+
+            ap_log_pid(pconf, ap_pid_fname);
+            
+            /* Create shutdown event, apPID_shutdown, where PID is the parent 
+             * Apache process ID. Shutdown is signaled by 'apache -k shutdown'.
+             */
+            shutdown_event = CreateEvent(sa, FALSE, FALSE, signal_shutdown_name);
+            if (!shutdown_event) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                             "Parent: Cannot create shutdown event %s", signal_shutdown_name);
+                CleanNullACL((void *)sa);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+
+            /* Create restart event, apPID_restart, where PID is the parent 
+             * Apache process ID. Restart is signaled by 'apache -k restart'.
+             */
+            restart_event = CreateEvent(sa, FALSE, FALSE, signal_restart_name);
+            if (!restart_event) {
+                CloseHandle(shutdown_event);
+                ap_log_error(APLOG_MARK, APLOG_CRIT, apr_get_os_error(), ap_server_conf,
+                             "Parent: Cannot create restart event %s", signal_restart_name);
+                CleanNullACL((void *)sa);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+            CleanNullACL((void *)sa);
+
+            /* Now that we are flying at 15000 feet... 
+             * wipe out the Win95 service console,
+             * signal the SCM the WinNT service started, or
+             * if not a service, setup console handlers instead.
+             */
+            if (!strcasecmp(signal_arg, "runservice"))
+            {
+                if (osver.dwPlatformId != VER_PLATFORM_WIN32_NT) 
+                {
+                    rv = mpm_service_to_start(&service_name,
+                                              s->process->pool);
+                    if (rv != APR_SUCCESS) {
+                        ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                                     "%s: Unable to start the service manager.",
+                                     service_name);
+                        return HTTP_INTERNAL_SERVER_ERROR;
+                    }
+                }
+            }
+
+            /* Create the start mutex, as an unnamed object for security.
+             * Ths start mutex is used during a restart to prevent more than 
+             * one child process from entering the accept loop at once.
+             */
+            rv =  apr_proc_mutex_create(&start_mutex, NULL,
+                                        APR_LOCK_DEFAULT,
+                                        ap_server_conf->process->pool);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                             "%s: Unable to create the start_mutex.",
+                             service_name);
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }            
+        }
+        /* Always reset our console handler to be the first, even on a restart
+        *  because some modules (e.g. mod_perl) might have set a console 
+        *  handler to terminate the process.
+        */
+        if (strcasecmp(signal_arg, "runservice"))
+            mpm_start_console_handler();
+    }
+    else /* parent_pid != my_pid */
+    {
+        mpm_start_child_console_handler();
+    }
+    return OK;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int winnt_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    /* Initialize shared static objects. 
+     */
+    ap_server_conf = s;
+
+    if (parent_pid != my_pid) {
+        return OK;
+    }
+
+    /* We cannot initialize our listeners if we are restarting
+     * (the parent process already has glomed on to them)
+     * nor should we do so for service reconfiguration 
+     * (since the service may already be running.)
+     */
+    if (!strcasecmp(signal_arg, "restart") 
+            || !strcasecmp(signal_arg, "config")) {
+        return OK;
+    }
+
+    if (ap_setup_listeners(s) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0, 
+                     NULL, "no listening sockets available, shutting down");
+        return DONE;
+    }
+
+    return OK;
+}
+
+static void winnt_child_init(apr_pool_t *pchild, struct server_rec *s)
+{
+    apr_status_t rv;
+
+    setup_signal_names(apr_psprintf(pchild,"ap%d", parent_pid));
+
+    /* This is a child process, not in single process mode */
+    if (!one_process) {
+        /* Set up events and the scoreboard */
+        get_handles_from_parent(s, &exit_event, &start_mutex, 
+                                &ap_scoreboard_shm);
+
+        /* Set up the listeners */
+        get_listeners_from_parent(s);
+
+        /* Done reading from the parent, close that channel */
+        CloseHandle(pipe);
+
+        ap_my_generation = ap_scoreboard_image->global->running_generation;
+    }
+    else {
+        /* Single process mode - this lock doesn't even need to exist */
+        rv = apr_proc_mutex_create(&start_mutex, signal_name_prefix, 
+                                   APR_LOCK_DEFAULT, s->process->pool);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK,APLOG_ERR, rv, ap_server_conf,
+                         "%s child %d: Unable to init the start_mutex.",
+                         service_name, my_pid);
+            exit(APEXIT_CHILDINIT);
+        }
+        
+        /* Borrow the shutdown_even as our _child_ loop exit event */
+        exit_event = shutdown_event;
+    }
+}
+
+
+AP_DECLARE(int) ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s )
+{
+    static int restart = 0;            /* Default is "not a restart" */
+
+    if (!restart) {
+        first_thread_limit = thread_limit;
+    }
+
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, APR_SUCCESS, ap_server_conf,
+                     "WARNING: Attempt to change ThreadLimit ignored "
+                     "during restart");
+        changed_limit_at_restart = 0;
+    }
+    
+    /* ### If non-graceful restarts are ever introduced - we need to rerun 
+     * the pre_mpm hook on subsequent non-graceful restarts.  But Win32 
+     * has only graceful style restarts - and we need this hook to act 
+     * the same on Win32 as on Unix.
+     */
+    if (!restart && ((parent_pid == my_pid) || one_process)) {
+        /* Set up the scoreboard. */
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            return 1;
+        }
+    }
+    
+    if ((parent_pid != my_pid) || one_process) 
+    {
+        /* The child process or in one_process (debug) mode 
+         */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                     "Child %d: Child process is running", my_pid);
+
+        child_main(pconf);
+
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, APR_SUCCESS, ap_server_conf,
+                     "Child %d: Child process is exiting", my_pid);        
+        return 1;
+    }
+    else 
+    {
+        /* A real-honest to goodness parent */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                     "%s configured -- resuming normal operations",
+                     ap_get_server_version());
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                     "Server built: %s", ap_get_server_built());
+
+        restart = master_main(ap_server_conf, shutdown_event, restart_event);
+
+        if (!restart) 
+        {
+            /* Shutting down. Clean up... */
+            const char *pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+
+            if (pidfile != NULL && unlink(pidfile) == 0) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, APR_SUCCESS,
+                             ap_server_conf, "removed PID file %s (pid=%ld)",
+                             pidfile, GetCurrentProcessId());
+            }
+            apr_proc_mutex_destroy(start_mutex);
+
+            CloseHandle(restart_event);
+            CloseHandle(shutdown_event);
+
+            return 1;
+        }
+    }
+
+    return 0; /* Restart */
+}
+
+static void winnt_hooks(apr_pool_t *p)
+{
+    /* The prefork open_logs phase must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+
+    ap_hook_pre_config(winnt_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_post_config(winnt_post_config, NULL, NULL, 0);
+    ap_hook_child_init(winnt_child_init, NULL, NULL, APR_HOOK_MIDDLE);
+    ap_hook_open_logs(winnt_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+}
+
+AP_MODULE_DECLARE_DATA module mpm_winnt_module = {
+    MPM20_MODULE_STUFF,
+    winnt_rewrite_args,         /* hook to run before apache parses args */
+    NULL,			/* create per-directory config structure */
+    NULL,			/* merge per-directory config structures */
+    NULL,			/* create per-server config structure */
+    NULL,			/* merge per-server config structures */
+    winnt_cmds,		        /* command apr_table_t */
+    winnt_hooks 		/* register_hooks */
+};
+
+#endif /* def WIN32 */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.h b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.h
new file mode 100644
index 00000000..8eb04303
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/mpm_winnt.h
@@ -0,0 +1,114 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_WINNT_H
+#define APACHE_MPM_WINNT_H
+
+#include "ap_listen.h"
+
+/* From service.c: */
+
+#define SERVICE_APACHE_RESTART 128
+
+#ifndef AP_DEFAULT_SERVICE_NAME
+#define AP_DEFAULT_SERVICE_NAME "Apache2"
+#endif
+
+#define SERVICECONFIG9X "Software\\Microsoft\\Windows\\CurrentVersion\\RunServices"
+#define SERVICECONFIG "System\\CurrentControlSet\\Services\\%s"
+#define SERVICEPARAMS "System\\CurrentControlSet\\Services\\%s\\Parameters"
+
+apr_status_t mpm_service_set_name(apr_pool_t *p, const char **display_name, 
+                                                 const char *set_name);
+apr_status_t mpm_merge_service_args(apr_pool_t *p, apr_array_header_t *args, 
+                                   int fixed_args);
+
+apr_status_t mpm_service_to_start(const char **display_name, apr_pool_t *p);
+apr_status_t mpm_service_started(void);
+apr_status_t mpm_service_install(apr_pool_t *ptemp, int argc, 
+                                char const* const* argv, int reconfig);
+apr_status_t mpm_service_uninstall(void);
+
+apr_status_t mpm_service_start(apr_pool_t *ptemp, int argc, 
+                              char const* const* argv);
+
+void mpm_signal_service(apr_pool_t *ptemp, int signal);
+
+void mpm_service_stopping(void);
+
+void mpm_start_console_handler(void);
+void mpm_start_child_console_handler(void);
+
+/* From nt_eventlog.c: */
+
+void mpm_nt_eventlog_stderr_open(char *display_name, apr_pool_t *p);
+void mpm_nt_eventlog_stderr_flush(void);
+
+/* From winnt.c: */
+extern int use_acceptex;
+extern int winnt_mpm_state;
+extern OSVERSIONINFO osver;
+extern void clean_child_exit(int);
+
+void setup_signal_names(char *prefix);
+
+typedef enum {
+    SIGNAL_PARENT_SHUTDOWN,
+    SIGNAL_PARENT_RESTART,
+    SIGNAL_PARENT_RESTART_GRACEFUL
+} ap_signal_parent_e;
+AP_DECLARE(void) ap_signal_parent(ap_signal_parent_e type);
+
+/*
+ * The Windoes MPM uses a queue of completion contexts that it passes
+ * between the accept threads and the worker threads. Declare the
+ * functions to access the queue and the structures passed on the
+ * queue in the header file to enable modules to access them
+ * if necessary. The queue resides in the MPM.
+ */
+#ifdef CONTAINING_RECORD
+#undef CONTAINING_RECORD
+#endif
+#define CONTAINING_RECORD(address, type, field) ((type *)( \
+                                                  (PCHAR)(address) - \
+                                                  (PCHAR)(&((type *)0)->field)))
+#define PADDED_ADDR_SIZE sizeof(SOCKADDR_IN)+16
+typedef struct CompContext {
+    struct CompContext *next;
+    OVERLAPPED Overlapped;
+    apr_socket_t *sock;
+    SOCKET accept_socket;
+    char buff[2*PADDED_ADDR_SIZE];
+    struct sockaddr *sa_server;
+    int sa_server_len;
+    struct sockaddr *sa_client;
+    int sa_client_len;
+    apr_pool_t *ptrans;
+    apr_bucket_alloc_t *ba;
+} COMP_CONTEXT, *PCOMP_CONTEXT;
+
+typedef enum {
+    IOCP_CONNECTION_ACCEPTED = 1,
+    IOCP_WAIT_FOR_RECEIVE = 2,
+    IOCP_WAIT_FOR_TRANSMITFILE = 3,
+    IOCP_SHUTDOWN = 4
+} io_state_e;
+
+AP_DECLARE(PCOMP_CONTEXT) mpm_get_completion_context(void);
+AP_DECLARE(void)          mpm_recycle_completion_context(PCOMP_CONTEXT pCompContext);
+AP_DECLARE(apr_status_t)  mpm_post_completion_context(PCOMP_CONTEXT pCompContext, io_state_e state);
+void hold_console_open_on_error(void);
+#endif /* APACHE_MPM_WINNT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/nt_eventlog.c b/rubbos/app/httpd-2.0.64/server/mpm/winnt/nt_eventlog.c
new file mode 100644
index 00000000..37a349e8
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/nt_eventlog.c
@@ -0,0 +1,175 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define CORE_PRIVATE 
+
+#include "httpd.h"
+#include "http_log.h"
+#include "mpm_winnt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "apr_portable.h"
+#include "ap_regkey.h"
+
+static char  *display_name  = NULL;
+static HANDLE stderr_thread = NULL;
+static HANDLE stderr_ready;
+
+static DWORD WINAPI service_stderr_thread(LPVOID hPipe)
+{
+    HANDLE hPipeRead = (HANDLE) hPipe;
+    HANDLE hEventSource;
+    char errbuf[256];
+    char *errmsg = errbuf;
+    const char *errarg[9];
+    DWORD errres;
+    ap_regkey_t *regkey;
+    apr_status_t rv;
+    apr_pool_t *p;
+    
+    apr_pool_sub_make(&p, NULL, NULL);
+
+    errarg[0] = "The Apache service named";
+    errarg[1] = display_name;
+    errarg[2] = "reported the following error:\r\n>>>";
+    errarg[3] = errbuf;
+    errarg[4] = NULL;
+    errarg[5] = NULL;
+    errarg[6] = NULL;
+    errarg[7] = NULL;
+    errarg[8] = NULL;
+
+    /* What are we going to do in here, bail on the user?  not. */
+    if ((rv = ap_regkey_open(&regkey, AP_REGKEY_LOCAL_MACHINE, 
+                             "SYSTEM\\CurrentControlSet\\Services\\"
+                             "EventLog\\Application\\Apache Service",
+                             APR_READ | APR_WRITE | APR_CREATE, p)) 
+            == APR_SUCCESS)
+    {
+        DWORD dwData = EVENTLOG_ERROR_TYPE | EVENTLOG_WARNING_TYPE | 
+                       EVENTLOG_INFORMATION_TYPE; 
+ 
+        /* The stock message file */
+        ap_regkey_value_set(regkey, "EventMessageFile", 
+                            "%SystemRoot%\\System32\\netmsg.dll", 
+                            AP_REGKEY_EXPAND, p);
+        
+        ap_regkey_value_raw_set(regkey, "TypesSupported", &dwData, 
+                                sizeof(dwData), REG_DWORD, p);
+        ap_regkey_close(regkey);
+    }
+
+    hEventSource = RegisterEventSourceW(NULL, L"Apache Service");
+
+    SetEvent(stderr_ready);
+
+    while (ReadFile(hPipeRead, errmsg, 1, &errres, NULL) && (errres == 1))
+    {
+        if ((errmsg > errbuf) || !apr_isspace(*errmsg))
+        {
+            ++errmsg;
+            if ((*(errmsg - 1) == '\n') 
+                    || (errmsg >= errbuf + sizeof(errbuf) - 1))
+            {
+                while ((errmsg > errbuf) && apr_isspace(*(errmsg - 1))) {
+                    --errmsg;
+                }
+                *errmsg = '\0';
+
+                /* Generic message: '%1 %2 %3 %4 %5 %6 %7 %8 %9'
+                 * The event code in netmsg.dll is 3299
+                 */
+                ReportEvent(hEventSource, EVENTLOG_ERROR_TYPE, 0, 
+                            3299, NULL, 9, 0, errarg, NULL);
+                errmsg = errbuf;
+            }
+        }
+    }
+
+    if ((errres = GetLastError()) != ERROR_BROKEN_PIPE) {
+        apr_snprintf(errbuf, sizeof(errbuf),
+                     "Win32 error %d reading stderr pipe stream\r\n", 
+                     GetLastError());
+
+        ReportEvent(hEventSource, EVENTLOG_ERROR_TYPE, 0, 
+                    3299, NULL, 9, 0, errarg, NULL);
+    }
+
+    CloseHandle(hPipeRead);
+    DeregisterEventSource(hEventSource);
+    CloseHandle(stderr_thread);
+    stderr_thread = NULL;
+    apr_pool_destroy(p);
+    return 0;
+}
+
+
+void mpm_nt_eventlog_stderr_flush(void)
+{
+    HANDLE cleanup_thread = stderr_thread;
+
+    if (cleanup_thread) {
+        HANDLE hErr = GetStdHandle(STD_ERROR_HANDLE);
+        fclose(stderr);
+        CloseHandle(hErr);
+        WaitForSingleObject(cleanup_thread, 30000);
+        CloseHandle(cleanup_thread);
+    }
+}
+
+
+void mpm_nt_eventlog_stderr_open(char *argv0, apr_pool_t *p)
+{
+    SECURITY_ATTRIBUTES sa;
+    HANDLE hProc = GetCurrentProcess();
+    HANDLE hPipeRead = NULL;
+    HANDLE hPipeWrite = NULL;
+    HANDLE hDup = NULL;
+    DWORD  threadid;
+    apr_file_t *eventlog_file;
+    apr_file_t *stderr_file;
+
+    display_name = argv0;
+
+    /* Create a pipe to send stderr messages to the system error log.
+     *
+     * _dup2() duplicates the write handle inheritable for us.
+     */
+    sa.nLength = sizeof(sa);
+    sa.lpSecurityDescriptor = NULL;
+    sa.bInheritHandle = FALSE;
+    CreatePipe(&hPipeRead, &hPipeWrite, NULL, 0); 
+    ap_assert(hPipeRead && hPipeWrite);
+
+    stderr_ready = CreateEvent(NULL, FALSE, FALSE, NULL);
+    stderr_thread = CreateThread(NULL, 0, service_stderr_thread,
+                                 (LPVOID) hPipeRead, 0, &threadid);
+    ap_assert(stderr_ready && stderr_thread);
+
+    WaitForSingleObject(stderr_ready, INFINITE);
+
+    if ((apr_file_open_stderr(&stderr_file, p) 
+             == APR_SUCCESS)
+     && (apr_os_file_put(&eventlog_file, &hPipeWrite, APR_WRITE, p)
+             == APR_SUCCESS))
+        apr_file_dup2(stderr_file, eventlog_file, p);
+
+    /* The code above _will_ corrupt the StdHandle... 
+     * and we must do so anyways.  We set this up only
+     * after we initialized the posix stderr API.
+     */
+    ap_open_stderr_log(p);
+}
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/winnt/service.c b/rubbos/app/httpd-2.0.64/server/mpm/winnt/service.c
new file mode 100644
index 00000000..8739dc08
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/winnt/service.c
@@ -0,0 +1,1346 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* This module ALONE requires the window message API from user.h 
+ * and the default APR include of windows.h will omit it, so
+ * preload the API symbols now...
+ */
+
+#define CORE_PRIVATE 
+#define _WINUSER_
+
+#include "httpd.h"
+#include "http_log.h"
+#include "mpm_winnt.h"
+#include "apr_strings.h"
+#include "apr_lib.h"
+#include "ap_regkey.h"
+
+#ifdef NOUSER
+#undef NOUSER
+#endif
+#undef _WINUSER_
+#include <winuser.h>
+
+static char *mpm_service_name = NULL;
+static char *mpm_display_name = NULL;
+
+static struct
+{
+    HANDLE mpm_thread;       /* primary thread handle of the apache server */
+    HANDLE service_thread;   /* thread service/monitor handle */
+    DWORD  service_thread_id;/* thread service/monitor ID */
+    HANDLE service_init;     /* controller thread init mutex */
+    HANDLE service_term;     /* NT service thread kill signal */
+    SERVICE_STATUS ssStatus;
+    SERVICE_STATUS_HANDLE hServiceStatus;
+} globdat;
+
+static int ReportStatusToSCMgr(int currentState, int exitCode, int waitHint);
+
+
+#define PRODREGKEY "SOFTWARE\\" AP_SERVER_BASEVENDOR "\\" \
+                   AP_SERVER_BASEPRODUCT "\\" AP_SERVER_BASEREVISION
+
+/*
+ * Get the server root from the registry into 'dir' which is
+ * size bytes long. Returns 0 if the server root was found
+ * or if the serverroot key does not exist (in which case
+ * dir will contain an empty string), or -1 if there was
+ * an error getting the key.
+ */
+apr_status_t ap_registry_get_server_root(apr_pool_t *p, char **buf)
+{
+    apr_status_t rv;
+    ap_regkey_t *key;
+
+    if ((rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, PRODREGKEY, 
+                             APR_READ, p)) == APR_SUCCESS) {
+        rv = ap_regkey_value_get(buf, key, "ServerRoot", p);
+        ap_regkey_close(key);
+        if (rv == APR_SUCCESS) 
+            return rv;
+    }
+
+    if ((rv = ap_regkey_open(&key, AP_REGKEY_CURRENT_USER, PRODREGKEY, 
+                             APR_READ, p)) == APR_SUCCESS) {
+        rv = ap_regkey_value_get(buf, key, "ServerRoot", p);
+        ap_regkey_close(key);
+        if (rv == APR_SUCCESS) 
+            return rv;
+    }
+
+    *buf = NULL;
+    return rv;
+}
+
+
+/* The service configuration's is stored under the following trees:
+ *
+ * HKLM\System\CurrentControlSet\Services\[service name]
+ *
+ *     \DisplayName
+ *     \ImagePath
+ *     \Parameters\ConfigArgs
+ *
+ * For Win9x, the launch service command is stored under:
+ *
+ * HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\[service name]
+ */
+
+
+/* exit() for Win32 is macro mapped (horrible, we agree) that allows us 
+ * to catch the non-zero conditions and inform the console process that
+ * the application died, and hang on to the console a bit longer.
+ *
+ * The macro only maps for http_main.c and other sources that include
+ * the service.h header, so we best assume it's an error to exit from
+ * _any_ other module.
+ *
+ * If real_exit_code is reset to 0, it will not be set or trigger this
+ * behavior on exit.  All service and child processes are expected to
+ * reset this flag to zero to avoid undesireable side effects.
+ */
+AP_DECLARE_DATA int real_exit_code = 1;
+
+void hold_console_open_on_error(void)
+{
+    HANDLE hConIn;
+    HANDLE hConErr;
+    DWORD result;
+    time_t start;
+    time_t remains;
+    char *msg = "Note the errors or messages above, "
+                "and press the <ESC> key to exit.  ";
+    CONSOLE_SCREEN_BUFFER_INFO coninfo;
+    INPUT_RECORD in;
+    char count[16];
+    
+    if (!real_exit_code)
+        return;
+    hConIn = GetStdHandle(STD_INPUT_HANDLE);
+    hConErr = GetStdHandle(STD_ERROR_HANDLE);
+    if ((hConIn == INVALID_HANDLE_VALUE) || (hConErr == INVALID_HANDLE_VALUE))
+        return;
+    if (!WriteConsole(hConErr, msg, strlen(msg), &result, NULL) || !result)
+        return;
+    if (!GetConsoleScreenBufferInfo(hConErr, &coninfo))
+        return;
+    if (!SetConsoleMode(hConIn, ENABLE_MOUSE_INPUT | 0x80))
+        return;
+        
+    start = time(NULL);
+    do
+    {
+        while (PeekConsoleInput(hConIn, &in, 1, &result) && result)
+        {
+            if (!ReadConsoleInput(hConIn, &in, 1, &result) || !result)
+                return;
+            if ((in.EventType == KEY_EVENT) && in.Event.KeyEvent.bKeyDown 
+                    && (in.Event.KeyEvent.uChar.AsciiChar == 27))
+                return;
+            if (in.EventType == MOUSE_EVENT 
+                    && (in.Event.MouseEvent.dwEventFlags == DOUBLE_CLICK))
+                return;
+        }
+        remains = ((start + 30) - time(NULL)); 
+        sprintf (count, "%d...", remains);
+        if (!SetConsoleCursorPosition(hConErr, coninfo.dwCursorPosition))
+            return;
+        if (!WriteConsole(hConErr, count, strlen(count), &result, NULL) 
+                || !result)
+            return;
+    }
+    while ((remains > 0) && WaitForSingleObject(hConIn, 1000) != WAIT_FAILED);
+}
+
+static BOOL  die_on_logoff = FALSE;
+
+static LRESULT CALLBACK monitor_service_9x_proc(HWND hWnd, UINT msg, 
+                                                WPARAM wParam, LPARAM lParam)
+{
+/* This is the WndProc procedure for our invisible window.
+ * When the user shuts down the system, this window is sent
+ * a signal WM_ENDSESSION. We clean up by signaling Apache
+ * to shut down, and idle until Apache's primary thread quits.
+ */
+    if ((msg == WM_ENDSESSION) 
+            && (die_on_logoff || (lParam != ENDSESSION_LOGOFF)))
+    {
+        ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+	if (wParam)
+            /* Don't leave this message until we are dead! */
+	    WaitForSingleObject(globdat.mpm_thread, 30000);
+        return 0;
+    }
+    return (DefWindowProc(hWnd, msg, wParam, lParam));
+}
+
+static DWORD WINAPI monitor_service_9x_thread(void *service_name)
+{
+    /* When running as a service under Windows 9x, there is no console
+     * window present, and no ConsoleCtrlHandler to call when the system 
+     * is shutdown.  If the WatchWindow thread is created with a NULL
+     * service_name argument, then the ...SystemMonitor window class is
+     * used to create the "Apache" window to watch for logoff and shutdown.
+     * If the service_name is provided, the ...ServiceMonitor window class
+     * is used to create the window named by the service_name argument,
+     * and the logoff message is ignored.
+     */
+    WNDCLASS wc;
+    HWND hwndMain;
+    MSG msg;
+    
+    wc.style         = CS_GLOBALCLASS;
+    wc.lpfnWndProc   = monitor_service_9x_proc; 
+    wc.cbClsExtra    = 0;
+    wc.cbWndExtra    = 0; 
+    wc.hInstance     = NULL;
+    wc.hIcon         = NULL;
+    wc.hCursor       = NULL;
+    wc.hbrBackground = NULL;
+    wc.lpszMenuName  = NULL;
+    if (service_name)
+	wc.lpszClassName = "ApacheWin95ServiceMonitor";
+    else
+	wc.lpszClassName = "ApacheWin95SystemMonitor";
+ 
+    die_on_logoff = service_name ? FALSE : TRUE;
+
+    if (!RegisterClass(&wc)) 
+    {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, apr_get_os_error(), 
+                     NULL, "Could not register window class for WatchWindow");
+        globdat.service_thread_id = 0;
+        return 0;
+    }
+    
+    /* Create an invisible window */
+    hwndMain = CreateWindow(wc.lpszClassName, 
+                            service_name ? (char *) service_name : "Apache",
+ 	                    WS_OVERLAPPEDWINDOW & ~WS_VISIBLE, 
+                            CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, 
+                            CW_USEDEFAULT, NULL, NULL, NULL, NULL);
+                            
+    if (!hwndMain)
+    {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, apr_get_os_error(), 
+                     NULL, "Could not create WatchWindow");
+        globdat.service_thread_id = 0;
+        return 0;
+    }
+
+    /* If we succeed, eliminate the console window.
+     * Signal the parent we are all set up, and
+     * watch the message queue while the window lives.
+     */
+    FreeConsole();
+    SetEvent(globdat.service_init);
+
+    while (GetMessage(&msg, NULL, 0, 0)) 
+    {
+        if (msg.message == WM_CLOSE)
+            DestroyWindow(hwndMain); 
+        else {
+	    TranslateMessage(&msg);
+	    DispatchMessage(&msg);
+        }
+    }
+    globdat.service_thread_id = 0;
+    return 0;
+}
+
+
+static BOOL CALLBACK console_control_handler(DWORD ctrl_type)
+{
+    switch (ctrl_type)
+    {
+        case CTRL_BREAK_EVENT:
+            fprintf(stderr, "Apache server restarting...\n");
+            ap_signal_parent(SIGNAL_PARENT_RESTART);
+            return TRUE;
+        case CTRL_C_EVENT:
+            fprintf(stderr, "Apache server interrupted...\n");
+            /* for Interrupt signals, shut down the server.
+             * Tell the system we have dealt with the signal
+             * without waiting for Apache to terminate.
+             */
+            ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+            return TRUE;
+
+        case CTRL_CLOSE_EVENT:
+        case CTRL_LOGOFF_EVENT:
+        case CTRL_SHUTDOWN_EVENT:
+            /* for Terminate signals, shut down the server.
+             * Wait for Apache to terminate, but respond
+             * after a reasonable time to tell the system
+             * that we did attempt to shut ourself down.
+             * THESE EVENTS WILL NOT OCCUR UNDER WIN9x!
+             */
+            fprintf(stderr, "Apache server shutdown initiated...\n");
+            ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+            Sleep(30000);
+            return TRUE;
+    }
+ 
+    /* We should never get here, but this is (mostly) harmless */
+    return FALSE;
+}
+
+
+static void stop_console_handler(void)
+{
+    SetConsoleCtrlHandler(console_control_handler, FALSE);
+}
+
+
+void mpm_start_console_handler(void)
+{
+    SetConsoleCtrlHandler(console_control_handler, TRUE);
+    atexit(stop_console_handler);
+}
+
+
+/* Special situation - children of services need to mind their
+ * P's & Q's and wait quietly, ignoring the mean OS signaling
+ * shutdown and other horrors, to kill them gracefully...
+ */
+
+static BOOL CALLBACK child_control_handler(DWORD ctrl_type)
+{
+    switch (ctrl_type)
+    {
+        case CTRL_C_EVENT:
+        case CTRL_BREAK_EVENT:
+            /* for Interrupt signals, ignore them.
+             * The system will also signal the parent process,
+             * which will terminate Apache.
+             */
+            return TRUE;
+
+        case CTRL_CLOSE_EVENT:
+        case CTRL_LOGOFF_EVENT:
+        case CTRL_SHUTDOWN_EVENT:
+            /* for Shutdown signals, ignore them, but...             .
+             * The system will also signal the parent process,
+             * which will terminate Apache, so we need to wait.
+             */
+            Sleep(30000);
+            return TRUE;
+    }
+ 
+    /* We should never get here, but this is (mostly) harmless */
+    return FALSE;
+}
+
+
+static void stop_child_console_handler(void)
+{
+    SetConsoleCtrlHandler(child_control_handler, FALSE);
+}
+
+
+void mpm_start_child_console_handler(void)
+{
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT) {
+        FreeConsole();
+    }
+    else
+    {
+        SetConsoleCtrlHandler(child_control_handler, TRUE);
+        atexit(stop_child_console_handler);
+    }
+}
+
+
+/**********************************
+  WinNT service control management
+ **********************************/
+
+static int ReportStatusToSCMgr(int currentState, int exitCode, int waitHint)
+{
+    static int checkPoint = 1;
+    int rv = APR_SUCCESS;
+    
+    if (globdat.hServiceStatus)
+    {
+        if (currentState == SERVICE_RUNNING) {
+            globdat.ssStatus.dwWaitHint = 0;
+            globdat.ssStatus.dwCheckPoint = 0;
+            globdat.ssStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP;
+        }
+        else if (currentState == SERVICE_STOPPED) {
+            globdat.ssStatus.dwWaitHint = 0;
+            globdat.ssStatus.dwCheckPoint = 0;
+            if (!exitCode && globdat.ssStatus.dwCurrentState 
+                                           != SERVICE_STOP_PENDING) {
+                /* An unexpected exit?  Better to error! */
+                exitCode = 1;
+            }
+            if (exitCode) {
+                globdat.ssStatus.dwWin32ExitCode =ERROR_SERVICE_SPECIFIC_ERROR;
+                globdat.ssStatus.dwServiceSpecificExitCode = exitCode;
+            }
+        }
+        else {
+            globdat.ssStatus.dwCheckPoint = ++checkPoint;
+	    globdat.ssStatus.dwControlsAccepted = 0;
+            if(waitHint)
+                globdat.ssStatus.dwWaitHint = waitHint;
+        }
+
+        globdat.ssStatus.dwCurrentState = currentState;
+        
+        rv = SetServiceStatus(globdat.hServiceStatus, &globdat.ssStatus);
+    }
+    return(rv);
+}
+
+/* Set the service description regardless of platform.
+ * We revert to set_service_description on NT/9x, the
+ * very long way so any Apache management program can grab the
+ * description.  This would be bad on Win2000, since it wouldn't
+ * notify the service control manager of the name change.
+ */
+
+/* borrowed from mpm_winnt.c */
+extern apr_pool_t *pconf;
+
+/* Windows 2000 alone supports ChangeServiceConfig2 in order to
+ * register our server_version string... so we need some fixups
+ * to avoid binding to that function if we are on WinNT/9x.
+ */
+static void set_service_description(void)
+{
+    const char *full_description;
+    SC_HANDLE schSCManager;
+    BOOL ret = 0;
+
+    /* Nothing to do if we are a console
+     */
+    if (!mpm_service_name)
+        return;
+
+    /* Time to fix up the description, upon each successful restart
+     */
+    full_description = ap_get_server_version();
+
+    if ((osver.dwPlatformId == VER_PLATFORM_WIN32_NT) 
+          && (osver.dwMajorVersion > 4) 
+          && (ChangeServiceConfig2)
+          && (schSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT)))
+    {    
+        SC_HANDLE schService = OpenService(schSCManager, mpm_service_name,
+                                           SERVICE_CHANGE_CONFIG);
+        if (schService) {
+            /* Cast is necessary, ChangeServiceConfig2 handles multiple
+             * object types, some volatile, some not.
+             */
+            /* ###: utf-ize */
+            if (ChangeServiceConfig2(schService,
+                                     1 /* SERVICE_CONFIG_DESCRIPTION */,
+                                     (LPVOID) &full_description)) {
+                full_description = NULL;
+            }
+            CloseServiceHandle(schService);
+        }
+        CloseServiceHandle(schSCManager);
+    }
+
+    if (full_description) 
+    {
+        char szPath[MAX_PATH];
+        ap_regkey_t *svckey;
+        apr_status_t rv;
+
+        /* Find the Service key that Monitor Applications iterate */
+        apr_snprintf(szPath, sizeof(szPath), 
+                     "SYSTEM\\CurrentControlSet\\Services\\%s", 
+                     mpm_service_name);
+        rv = ap_regkey_open(&svckey, AP_REGKEY_LOCAL_MACHINE, szPath,
+                            APR_READ | APR_WRITE, pconf);
+        if (rv != APR_SUCCESS) {
+            return;
+        }
+        /* Attempt to set the Description value for our service */
+        ap_regkey_value_set(svckey, "Description", full_description, 0, pconf);
+        ap_regkey_close(svckey);
+    }
+}
+
+/* handle the SCM's ControlService() callbacks to our service */
+
+static VOID WINAPI service_nt_ctrl(DWORD dwCtrlCode)
+{
+    if (dwCtrlCode == SERVICE_CONTROL_STOP)
+    {
+        ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+        ReportStatusToSCMgr(SERVICE_STOP_PENDING, NO_ERROR, 30000);
+        return;
+    }
+    if (dwCtrlCode == SERVICE_APACHE_RESTART)
+    {
+        ap_signal_parent(SIGNAL_PARENT_RESTART);
+        ReportStatusToSCMgr(SERVICE_START_PENDING, NO_ERROR, 30000);
+        return;
+    }
+    
+    ReportStatusToSCMgr(globdat.ssStatus.dwCurrentState, NO_ERROR, 0);            
+}
+
+
+/* service_nt_main_fn is outside of the call stack and outside of the
+ * primary server thread... so now we _really_ need a placeholder!
+ * The winnt_rewrite_args has created and shared mpm_new_argv with us.
+ */
+extern apr_array_header_t *mpm_new_argv;
+
+/* ###: utf-ize */
+static void __stdcall service_nt_main_fn(DWORD argc, LPTSTR *argv)
+{
+    const char *ignored;
+
+    /* args and service names live in the same pool */
+    mpm_service_set_name(mpm_new_argv->pool, &ignored, argv[0]);
+
+    memset(&globdat.ssStatus, 0, sizeof(globdat.ssStatus));
+    globdat.ssStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
+    globdat.ssStatus.dwCurrentState = SERVICE_START_PENDING;
+    globdat.ssStatus.dwCheckPoint = 1;
+
+    /* ###: utf-ize */
+    if (!(globdat.hServiceStatus = RegisterServiceCtrlHandler(argv[0], service_nt_ctrl)))
+    {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, apr_get_os_error(), 
+                     NULL, "Failure registering service handler");
+        return;
+    }
+
+    /* Report status, no errors, and buy 3 more seconds */
+    ReportStatusToSCMgr(SERVICE_START_PENDING, NO_ERROR, 30000);
+
+    /* We need to append all the command arguments passed via StartService() 
+     * to our running service... which just got here via the SCM...
+     * but we hvae no interest in argv[0] for the mpm_new_argv list.
+     */
+    if (argc > 1) 
+    {
+        char **cmb_data;
+
+        mpm_new_argv->nalloc = mpm_new_argv->nelts + argc - 1;
+        cmb_data = malloc(mpm_new_argv->nalloc * sizeof(const char *));
+
+        /* mpm_new_argv remains first (of lower significance) */
+        memcpy (cmb_data, mpm_new_argv->elts, 
+                mpm_new_argv->elt_size * mpm_new_argv->nelts);
+        
+        /* Service args follow from StartService() invocation */
+        memcpy (cmb_data + mpm_new_argv->nelts, argv + 1, 
+                mpm_new_argv->elt_size * (argc - 1));
+        
+        /* The replacement arg list is complete */
+        mpm_new_argv->elts = (char *)cmb_data;
+        mpm_new_argv->nelts = mpm_new_argv->nalloc;
+    }
+
+    /* Let the main thread continue now... but hang on to the
+     * signal_monitor event so we can take further action
+     */
+    SetEvent(globdat.service_init);
+
+    WaitForSingleObject(globdat.service_term, INFINITE);
+}
+
+
+DWORD WINAPI service_nt_dispatch_thread(LPVOID nada)
+{
+    apr_status_t rv = APR_SUCCESS;
+
+    SERVICE_TABLE_ENTRY dispatchTable[] =
+    {
+        { "", service_nt_main_fn },
+        { NULL, NULL }
+    };
+
+    /* ###: utf-ize */
+    if (!StartServiceCtrlDispatcher(dispatchTable))
+    {
+        /* This is a genuine failure of the SCM. */
+        rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     "Error starting service control dispatcher");
+    }
+
+    return (rv);
+}
+
+
+apr_status_t mpm_service_set_name(apr_pool_t *p, const char **display_name, 
+                                  const char *set_name)
+{
+    char key_name[MAX_PATH];
+    ap_regkey_t *key;
+    apr_status_t rv;
+
+    /* ### Needs improvement, on Win2K the user can _easily_ 
+     * change the display name to a string that doesn't reflect 
+     * the internal service name + whitespace!
+     */
+    mpm_service_name = apr_palloc(p, strlen(set_name) + 1);
+    apr_collapse_spaces((char*) mpm_service_name, set_name);
+    apr_snprintf(key_name, sizeof(key_name), SERVICECONFIG, mpm_service_name);
+    rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, key_name, APR_READ, pconf);
+    if (rv == APR_SUCCESS) {
+        rv = ap_regkey_value_get(&mpm_display_name, key, "DisplayName", pconf);
+        ap_regkey_close(key);
+    }
+    if (rv != APR_SUCCESS) {
+        /* Take the given literal name if there is no service entry */
+        mpm_display_name = apr_pstrdup(p, set_name);
+    } 
+    *display_name = mpm_display_name;
+    return rv;
+}
+
+
+apr_status_t mpm_merge_service_args(apr_pool_t *p, 
+                                   apr_array_header_t *args, 
+                                   int fixed_args)
+{
+    apr_array_header_t *svc_args = NULL;
+    char conf_key[MAX_PATH];
+    char **cmb_data;
+    apr_status_t rv;
+    ap_regkey_t *key;
+
+    apr_snprintf(conf_key, sizeof(conf_key), SERVICEPARAMS, mpm_service_name);
+    rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, conf_key, APR_READ, p);
+    if (rv == APR_SUCCESS) {
+        rv = ap_regkey_value_array_get(&svc_args, key, "ConfigArgs", p);
+        ap_regkey_close(key);
+    }
+    if (rv != APR_SUCCESS) {
+        if (rv == ERROR_FILE_NOT_FOUND) {
+            ap_log_error(APLOG_MARK, APLOG_INFO, 0, NULL,
+                         "No ConfigArgs registered for %s, perhaps "
+                         "this service is not installed?", 
+                         mpm_service_name);
+            return APR_SUCCESS;
+        }
+        else
+            return (rv);        
+    }
+
+    if (!svc_args || svc_args->nelts == 0) {
+        return (APR_SUCCESS);
+    }
+
+    /* Now we have the mpm_service_name arg, and the mpm_runservice_nt()
+     * call appended the arguments passed by StartService(), so it's  
+     * time to _prepend_ the default arguments for the server from 
+     * the service's default arguments (all others override them)...
+     */
+    args->nalloc = args->nelts + svc_args->nelts;
+    cmb_data = malloc(args->nalloc * sizeof(const char *));
+
+    /* First three args (argv[0], -f, path) remain first */
+    memcpy(cmb_data, args->elts, args->elt_size * fixed_args);
+    
+    /* Service args follow from service registry array */
+    memcpy(cmb_data + fixed_args, svc_args->elts, 
+           svc_args->elt_size * svc_args->nelts);
+    
+    /* Remaining new args follow  */
+    memcpy(cmb_data + fixed_args + svc_args->nelts,
+           (const char **)args->elts + fixed_args, 
+           args->elt_size * (args->nelts - fixed_args));
+    
+    args->elts = (char *)cmb_data;
+    args->nelts = args->nalloc;
+
+    return APR_SUCCESS;
+}
+
+
+void service_stopped(void)
+{
+    /* Still have a thread & window to clean up, so signal now */
+    if (globdat.service_thread)
+    {
+        if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+        {
+            /* Stop logging to the event log */
+            mpm_nt_eventlog_stderr_flush();
+
+            /* Cause the service_nt_main_fn to complete */
+            ReleaseMutex(globdat.service_term);
+
+            ReportStatusToSCMgr(SERVICE_STOPPED, // service state
+                                NO_ERROR,        // exit code
+                                0);              // wait hint
+        }
+        else /* osver.dwPlatformId != VER_PLATFORM_WIN32_NT */
+        {
+            RegisterServiceProcess(0, 0);
+            PostThreadMessage(globdat.service_thread_id, WM_CLOSE, 0, 0);
+        }
+
+        WaitForSingleObject(globdat.service_thread, 5000);
+        CloseHandle(globdat.service_thread);
+    }
+}
+
+
+apr_status_t mpm_service_to_start(const char **display_name, apr_pool_t *p)
+{
+    HANDLE hProc = GetCurrentProcess();
+    HANDLE hThread = GetCurrentThread();
+    HANDLE waitfor[2];
+
+    /* Prevent holding open the (hidden) console */
+    real_exit_code = 0;
+
+     /* GetCurrentThread returns a psuedo-handle, we need
+      * a real handle for another thread to wait upon.
+      */
+    if (!DuplicateHandle(hProc, hThread, hProc, &(globdat.mpm_thread),
+                         0, FALSE, DUPLICATE_SAME_ACCESS)) {
+        return APR_ENOTHREAD;
+    }
+    
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+    {
+        globdat.service_init = CreateEvent(NULL, FALSE, FALSE, NULL);
+        globdat.service_term = CreateMutex(NULL, TRUE, NULL);
+        if (!globdat.service_init || !globdat.service_term) {
+             return APR_EGENERAL;
+        }
+
+        globdat.service_thread = CreateThread(NULL, 0, service_nt_dispatch_thread, 
+                                              NULL, 0, &globdat.service_thread_id);
+    }
+    else /* osver.dwPlatformId != VER_PLATFORM_WIN32_NT */
+    {
+        if (!RegisterServiceProcess(0, 1)) 
+            return GetLastError();
+
+        globdat.service_init = CreateEvent(NULL, FALSE, FALSE, NULL);
+        if (!globdat.service_init) {
+            return APR_EGENERAL;
+        }
+
+        globdat.service_thread = CreateThread(NULL, 0, monitor_service_9x_thread, 
+                                              (LPVOID) mpm_service_name, 0,
+                                              &globdat.service_thread_id);
+    }
+
+    if (!globdat.service_thread) {
+        return APR_ENOTHREAD;
+    }
+
+    waitfor[0] = globdat.service_init;
+    waitfor[1] = globdat.service_thread;
+
+    /* Wait for controlling thread init or termination */
+    if (WaitForMultipleObjects(2, waitfor, FALSE, 10000) != WAIT_OBJECT_0) {
+        return APR_ENOTHREAD;
+    }
+
+    atexit(service_stopped);
+    *display_name = mpm_display_name; 
+    return APR_SUCCESS;
+}
+
+
+apr_status_t mpm_service_started(void)
+{
+    set_service_description();
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+    {
+        ReportStatusToSCMgr(SERVICE_RUNNING,    // service state
+                            NO_ERROR,           // exit code
+                            0);                 // wait hint
+    }
+    return APR_SUCCESS;
+}
+
+
+void mpm_service_stopping(void)
+{
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+        ReportStatusToSCMgr(SERVICE_STOP_PENDING, // service state
+                            NO_ERROR,             // exit code
+                            30000);               // wait hint
+}
+
+
+apr_status_t mpm_service_install(apr_pool_t *ptemp, int argc, 
+                                 const char * const * argv, int reconfig)
+{
+    char key_name[MAX_PATH];
+    char exe_path[MAX_PATH];
+    char *launch_cmd;
+    ap_regkey_t *key;
+    apr_status_t rv;
+    
+    fprintf(stderr,reconfig ? "Reconfiguring the %s service\n"
+		   : "Installing the %s service\n", mpm_display_name);
+
+    /* ###: utf-ize */
+    if (GetModuleFileName(NULL, exe_path, sizeof(exe_path)) == 0)
+    {
+        apr_status_t rv = apr_get_os_error();
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                     "GetModuleFileName failed");
+        return rv;
+    }
+
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+    {
+        SC_HANDLE   schService;
+        SC_HANDLE   schSCManager;
+
+        schSCManager = OpenSCManager(NULL, NULL, /* local, default database */
+                                     SC_MANAGER_CREATE_SERVICE);
+        if (!schSCManager) {
+            rv = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "Failed to open the WinNT service manager");
+            return (rv);
+        }
+
+        launch_cmd = apr_psprintf(ptemp, "\"%s\" -k runservice", exe_path);
+
+        if (reconfig) {
+            /* ###: utf-ize */
+            schService = OpenService(schSCManager, mpm_service_name, 
+                                     SERVICE_CHANGE_CONFIG);
+            if (!schService) {
+                ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_ERR, 
+                             apr_get_os_error(), NULL,
+                             "OpenService failed");
+            }
+            /* ###: utf-ize */
+            else if (!ChangeServiceConfig(schService, 
+                                          SERVICE_WIN32_OWN_PROCESS,
+                                          SERVICE_AUTO_START,
+                                          SERVICE_ERROR_NORMAL,
+                                          launch_cmd, NULL, NULL, 
+                                          "Tcpip\0Afd\0", NULL, NULL,
+                                          mpm_display_name)) {
+                ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_ERR, 
+                             apr_get_os_error(), NULL,
+                             "ChangeServiceConfig failed");
+	        /* !schService aborts configuration below */
+	        CloseServiceHandle(schService);
+	        schService = NULL;
+	    }
+        }
+        else {
+            /* RPCSS is the Remote Procedure Call (RPC) Locator required 
+             * for DCOM communication pipes.  I am far from convinced we 
+             * should add this to the default service dependencies, but 
+             * be warned that future apache modules or ISAPI dll's may 
+             * depend on it.
+             */
+            /* ###: utf-ize */
+            schService = CreateService(schSCManager,         // SCManager database
+                                   mpm_service_name,     // name of service
+                                   mpm_display_name,     // name to display
+                                   SERVICE_ALL_ACCESS,   // access required
+                                   SERVICE_WIN32_OWN_PROCESS,  // service type
+                                   SERVICE_AUTO_START,   // start type
+                                   SERVICE_ERROR_NORMAL, // error control type
+                                   launch_cmd,           // service's binary
+                                   NULL,                 // no load svc group
+                                   NULL,                 // no tag identifier
+                                   "Tcpip\0Afd\0",       // dependencies
+                                   NULL,                 // use SYSTEM account
+                                   NULL);                // no password
+
+            if (!schService) 
+            {
+                rv = apr_get_os_error();
+                ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                             "Failed to create WinNT Service Profile");
+                CloseServiceHandle(schSCManager);
+                return (rv);
+            }
+        }
+	
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+    }
+    else /* osver.dwPlatformId != VER_PLATFORM_WIN32_NT */
+    {
+        /* Store the launch command in the registry */
+        launch_cmd = apr_psprintf(ptemp, "\"%s\" -n %s -k runservice", 
+                                 exe_path, mpm_service_name);
+        rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, SERVICECONFIG9X, 
+                            APR_READ | APR_WRITE | APR_CREATE, pconf);
+        if (rv == APR_SUCCESS) {
+            rv = ap_regkey_value_set(key, mpm_service_name, 
+                                     launch_cmd, 0, pconf);
+            ap_regkey_close(key);
+        }
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                         "%s: Failed to add the RunServices registry entry.", 
+                         mpm_display_name);
+            return (rv);
+        }
+
+        apr_snprintf(key_name, sizeof(key_name), SERVICECONFIG, mpm_service_name);
+        rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, key_name, 
+                            APR_READ | APR_WRITE | APR_CREATE, pconf);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                         "%s: Failed to create the registry service key.", 
+                         mpm_display_name);
+            return (rv);
+        }
+        rv = ap_regkey_value_set(key, "ImagePath", launch_cmd, 0, pconf);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                         "%s: Failed to store ImagePath in the registry.", 
+                         mpm_display_name);
+            ap_regkey_close(key);
+            return (rv);
+        }
+        rv = ap_regkey_value_set(key, "DisplayName", 
+                                 mpm_display_name, 0, pconf);
+        ap_regkey_close(key);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                         "%s: Failed to store DisplayName in the registry.", 
+                         mpm_display_name);
+            return (rv);
+        }
+    }
+
+    set_service_description();
+
+    /* For both WinNT & Win9x store the service ConfigArgs in the registry...
+     */
+    apr_snprintf(key_name, sizeof(key_name), SERVICEPARAMS, mpm_service_name);
+    rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, key_name, 
+                        APR_READ | APR_WRITE | APR_CREATE, pconf);
+    if (rv == APR_SUCCESS) {
+        rv = ap_regkey_value_array_set(key, "ConfigArgs", argc, argv, pconf);
+        ap_regkey_close(key);
+    }
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL, 
+                     "%s: Failed to store the ConfigArgs in the registry.", 
+                     mpm_display_name);
+        return (rv);
+    }
+    fprintf(stderr,"The %s service is successfully installed.\n", mpm_display_name);
+    return APR_SUCCESS;
+}
+
+
+apr_status_t mpm_service_uninstall(void)
+{
+    char key_name[MAX_PATH];
+    apr_status_t rv;
+
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+    {
+        SC_HANDLE schService;
+        SC_HANDLE schSCManager;
+
+        fprintf(stderr,"Removing the %s service\n", mpm_display_name);
+
+        schSCManager = OpenSCManager(NULL, NULL, /* local, default database */
+                                     SC_MANAGER_CONNECT);
+        if (!schSCManager) {
+            rv = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "Failed to open the WinNT service manager.");
+            return (rv);
+        }
+        
+        /* ###: utf-ize */
+        schService = OpenService(schSCManager, mpm_service_name, DELETE);
+
+        if (!schService) {
+           rv = apr_get_os_error();
+           ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+			"%s: OpenService failed", mpm_display_name);
+           return (rv);
+        }
+        
+        /* assure the service is stopped before continuing
+         *
+         * This may be out of order... we might not be able to be
+         * granted all access if the service is running anyway.
+         *
+         * And do we want to make it *this easy* for them
+         * to uninstall their service unintentionally?
+         */
+        // ap_stop_service(schService);
+
+        if (DeleteService(schService) == 0) {
+            rv = apr_get_os_error();
+	    ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "%s: Failed to delete the service.", mpm_display_name);
+            return (rv);
+        }
+        
+        CloseServiceHandle(schService);        
+        CloseServiceHandle(schSCManager);
+    }
+    else /* osver.dwPlatformId != VER_PLATFORM_WIN32_NT */
+    {
+        apr_status_t rv2, rv3;
+        ap_regkey_t *key;
+        fprintf(stderr,"Removing the %s service\n", mpm_display_name);
+
+        /* TODO: assure the service is stopped before continuing */
+
+        rv = ap_regkey_open(&key, AP_REGKEY_LOCAL_MACHINE, SERVICECONFIG9X, 
+                            APR_READ | APR_WRITE | APR_CREATE, pconf);
+        if (rv == APR_SUCCESS) {
+            rv = ap_regkey_value_remove(key, mpm_service_name, pconf);
+            ap_regkey_close(key);
+        }
+        if (rv != APR_SUCCESS) {
+	    ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "%s: Failed to remove the RunServices registry "
+                         "entry.", mpm_display_name);
+        }
+        
+        /* we blast Services/us, not just the Services/us/Parameters branch */
+        apr_snprintf(key_name, sizeof(key_name), SERVICEPARAMS, mpm_service_name);
+        rv2 = ap_regkey_remove(AP_REGKEY_LOCAL_MACHINE, key_name, pconf);
+        apr_snprintf(key_name, sizeof(key_name), SERVICECONFIG, mpm_service_name);
+        rv3 = ap_regkey_remove(AP_REGKEY_LOCAL_MACHINE, key_name, pconf);
+        rv2 = (rv2 != APR_SUCCESS) ? rv2 : rv3;
+        if (rv2 != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv2, NULL,
+                         "%s: Failed to remove the service config from the "
+                         "registry.", mpm_display_name);
+        }
+        rv = (rv != APR_SUCCESS) ? rv : rv2;
+        if (rv != APR_SUCCESS)
+            return rv;
+    }
+    fprintf(stderr,"The %s service has been removed successfully.\n", mpm_display_name);
+    return APR_SUCCESS;
+}
+
+
+/* signal_service_transition is a simple thunk to signal the service
+ * and monitor its successful transition.  If the signal passed is 0,
+ * then the caller is assumed to already have performed some service 
+ * operation to be monitored (such as StartService), and no actual
+ * ControlService signal is sent.
+ */
+
+static int signal_service_transition(SC_HANDLE schService, DWORD signal, DWORD pending, DWORD complete)
+{
+    if (signal && !ControlService(schService, signal, &globdat.ssStatus)) 
+        return FALSE;
+    
+    do {
+        Sleep(1000);    
+        if (!QueryServiceStatus(schService, &globdat.ssStatus))
+            return FALSE;
+    } while (globdat.ssStatus.dwCurrentState == pending);
+        
+    return (globdat.ssStatus.dwCurrentState == complete);
+}
+
+
+apr_status_t mpm_service_start(apr_pool_t *ptemp, int argc, 
+                               const char * const * argv)
+{
+    apr_status_t rv;
+    
+    fprintf(stderr,"Starting the %s service\n", mpm_display_name);
+
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT)
+    {
+        char **start_argv;
+        SC_HANDLE   schService;
+        SC_HANDLE   schSCManager;
+
+        schSCManager = OpenSCManager(NULL, NULL, /* local, default database */
+                                     SC_MANAGER_CONNECT);
+        if (!schSCManager) {
+            rv = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "Failed to open the WinNT service manager");
+            return (rv);
+        }
+
+        /* ###: utf-ize */
+        schService = OpenService(schSCManager, mpm_service_name, 
+                                 SERVICE_START | SERVICE_QUERY_STATUS);
+        if (!schService) {
+            rv = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "%s: Failed to open the service.", mpm_display_name);
+            CloseServiceHandle(schSCManager);
+            return (rv);
+        }
+
+        if (QueryServiceStatus(schService, &globdat.ssStatus)
+            && (globdat.ssStatus.dwCurrentState == SERVICE_RUNNING)) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, 0, NULL,
+                         "Service %s is already started!", mpm_display_name);
+            CloseServiceHandle(schService);
+            CloseServiceHandle(schSCManager);
+            return 0;
+        }
+        
+        start_argv = malloc((argc + 1) * sizeof(const char **));
+        memcpy(start_argv, argv, argc * sizeof(const char **));
+        start_argv[argc] = NULL;
+
+        rv = APR_EINIT;
+        /* ###: utf-ize */
+        if (StartService(schService, argc, start_argv)
+            && signal_service_transition(schService, 0, /* test only */
+                                         SERVICE_START_PENDING, 
+                                         SERVICE_RUNNING))
+                rv = APR_SUCCESS;
+
+        if (rv != APR_SUCCESS)
+            rv = apr_get_os_error();
+        
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+    }
+    else /* osver.dwPlatformId != VER_PLATFORM_WIN32_NT */
+    {
+        STARTUPINFO si;           /* Filled in prior to call to CreateProcess */
+        PROCESS_INFORMATION pi;   /* filled in on call to CreateProcess */
+        char exe_path[MAX_PATH];
+        char exe_cmd[MAX_PATH * 4];
+        char *next_arg;
+        int i;
+
+        /* Locate the active top level window named service_name
+         * provided the class is ApacheWin95ServiceMonitor
+         */
+        if (FindWindow("ApacheWin95ServiceMonitor", mpm_service_name)) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, 0, NULL,
+                         "Service %s is already started!", mpm_display_name);
+            return 0;
+        }
+
+        /* This may not appear intuitive, but Win9x will not allow a process
+         * to detach from the console without releasing the entire console.
+         * Ergo, we must spawn a new process for the service to get back our
+         * console window.
+         * The config is pre-flighted, so there should be no danger of failure.
+         */
+        
+        if (GetModuleFileName(NULL, exe_path, sizeof(exe_path)) == 0)
+        {
+            apr_status_t rv = apr_get_os_error();
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, rv, NULL,
+                         "GetModuleFileName failed");
+            return rv;
+        }
+        
+        apr_snprintf(exe_cmd, sizeof(exe_cmd), 
+                     "\"%s\" -n %s -k runservice", 
+                     exe_path, mpm_service_name);  
+        next_arg = strchr(exe_cmd, '\0');
+        for (i = 0; i < argc; ++i) {
+            apr_snprintf(next_arg, sizeof(exe_cmd) - (next_arg - exe_cmd), 
+                         " \"%s\"", argv[i]);
+            next_arg = strchr(exe_cmd, '\0');
+        }
+        
+        memset(&si, 0, sizeof(si));
+        memset(&pi, 0, sizeof(pi));
+        si.cb = sizeof(si);
+        si.dwFlags     = STARTF_USESHOWWINDOW;
+        si.wShowWindow = SW_HIDE;   /* This might be redundant */
+        
+        rv = APR_EINIT;
+        if (CreateProcess(NULL, exe_cmd, NULL, NULL, FALSE, 
+                           DETACHED_PROCESS, /* Creation flags */
+                           NULL, NULL, &si, &pi)) 
+        {
+            DWORD code;
+            while (GetExitCodeProcess(pi.hProcess, &code) == STILL_ACTIVE) {
+                if (FindWindow("ApacheWin95ServiceMonitor", mpm_service_name)) {
+                    rv = APR_SUCCESS;
+                    break;
+                }
+                Sleep (1000);
+            }
+        }
+        
+        if (rv != APR_SUCCESS)
+            rv = apr_get_os_error();
+        
+        CloseHandle(pi.hProcess);
+        CloseHandle(pi.hThread);
+    }    
+
+    if (rv == APR_SUCCESS)
+        fprintf(stderr,"The %s service is running.\n", mpm_display_name);
+    else
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                     "%s: Failed to start the service process.",
+                     mpm_display_name);
+        
+    return rv;
+}
+
+
+/* signal is zero to stop, non-zero for restart */
+
+void mpm_signal_service(apr_pool_t *ptemp, int signal)
+{
+    int success = FALSE;
+    
+    if (osver.dwPlatformId == VER_PLATFORM_WIN32_NT) 
+    {
+        SC_HANDLE   schService;
+        SC_HANDLE   schSCManager;
+
+        schSCManager = OpenSCManager(NULL, NULL, // default machine & database
+                                     SC_MANAGER_CONNECT);
+        
+        if (!schSCManager) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, apr_get_os_error(), NULL,
+                         "Failed to open the NT Service Manager");
+            return;
+        }
+
+        /* ###: utf-ize */
+        schService = OpenService(schSCManager, mpm_service_name, 
+                                 SERVICE_INTERROGATE | SERVICE_QUERY_STATUS | 
+                                 SERVICE_USER_DEFINED_CONTROL |
+                                 SERVICE_START | SERVICE_STOP);
+
+        if (schService == NULL) {
+            /* Could not open the service */
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, apr_get_os_error(), NULL,
+                         "Failed to open the %s Service", mpm_display_name);
+            CloseServiceHandle(schSCManager);
+            return;
+        }
+        
+        if (!QueryServiceStatus(schService, &globdat.ssStatus)) {
+            ap_log_error(APLOG_MARK, APLOG_ERR | APLOG_STARTUP, apr_get_os_error(), NULL,
+                         "Query of Service %s failed", mpm_display_name);
+            CloseServiceHandle(schService);
+            CloseServiceHandle(schSCManager);
+            return;
+        }
+
+        if (!signal && (globdat.ssStatus.dwCurrentState == SERVICE_STOPPED)) {
+            fprintf(stderr,"The %s service is not started.\n", mpm_display_name);
+            CloseServiceHandle(schService);
+            CloseServiceHandle(schSCManager);
+            return;
+        }
+        
+        fprintf(stderr,"The %s service is %s.\n", mpm_display_name, 
+               signal ? "restarting" : "stopping");
+
+        if (!signal)
+            success = signal_service_transition(schService, 
+                                                SERVICE_CONTROL_STOP, 
+                                                SERVICE_STOP_PENDING, 
+                                                SERVICE_STOPPED);
+        else if (globdat.ssStatus.dwCurrentState == SERVICE_STOPPED) {
+            mpm_service_start(ptemp, 0, NULL);
+            CloseServiceHandle(schService);
+            CloseServiceHandle(schSCManager);
+            return;
+        }
+        else
+            success = signal_service_transition(schService, 
+                                                SERVICE_APACHE_RESTART, 
+                                                SERVICE_START_PENDING, 
+                                                SERVICE_RUNNING);
+
+        CloseServiceHandle(schService);
+        CloseServiceHandle(schSCManager);
+    }
+    else /* !isWindowsNT() */
+    {
+        DWORD       service_pid;
+        HANDLE      hwnd;
+        char prefix[20];
+        /* Locate the active top level window named service_name
+         * provided the class is ApacheWin95ServiceMonitor
+         */
+        hwnd = FindWindow("ApacheWin95ServiceMonitor", mpm_service_name);
+        if (hwnd && GetWindowThreadProcessId(hwnd, &service_pid))
+            globdat.ssStatus.dwCurrentState = SERVICE_RUNNING;
+        else
+        {
+            globdat.ssStatus.dwCurrentState = SERVICE_STOPPED;
+            if (!signal) {
+                fprintf(stderr,"The %s service is not started.\n", mpm_display_name);
+                return;
+            }
+        }
+
+        fprintf(stderr,"The %s service is %s.\n", mpm_display_name, 
+               signal ? "restarting" : "stopping");
+
+        apr_snprintf(prefix, sizeof(prefix), "ap%ld", (long)service_pid);
+        setup_signal_names(prefix);
+
+        if (!signal) 
+        {
+            int ticks = 60;
+            ap_signal_parent(SIGNAL_PARENT_SHUTDOWN);
+            while (--ticks)
+            {
+                if (!IsWindow(hwnd)) {
+                    success = TRUE;
+                    break;
+                }
+                Sleep(1000);
+            }
+        }
+        else /* !stop */
+        {   
+            /* TODO: Aught to add a little test to the restart logic, and
+             * store the restart counter in the window's user dword.
+             * Then we can hang on and report a successful restart.  But
+             * that's a project for another day.
+             */
+            if (globdat.ssStatus.dwCurrentState == SERVICE_STOPPED) {
+                mpm_service_start(ptemp, 0, NULL);
+                return;
+            }
+            else {
+                success = TRUE;
+                ap_signal_parent(SIGNAL_PARENT_RESTART);
+            }
+        }
+    }
+
+    if (success)
+        fprintf(stderr,"The %s service has %s.\n", mpm_display_name, 
+               signal ? "restarted" : "stopped");
+    else
+        fprintf(stderr,"Failed to %s the %s service.\n", 
+               signal ? "restart" : "stop", mpm_display_name);
+}
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/.deps b/rubbos/app/httpd-2.0.64/server/mpm/worker/.deps
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/.deps
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/fdqueue.o b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/fdqueue.o
new file mode 100644
index 00000000..fb4a5ad1
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/fdqueue.o
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/libworker.a b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/libworker.a
new file mode 100644
index 00000000..b315573e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/libworker.a
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/libworker.la b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/libworker.la
new file mode 100644
index 00000000..464032f9
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/libworker.la
@@ -0,0 +1,35 @@
+# libworker.la - a libtool library file
+# Generated by ltmain.sh - GNU libtool 1.5.26 (1.1220.2.493 2008/02/01 16:58:18)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libworker.a'
+
+# Libraries that this one depends upon.
+dependency_libs=' -L/bottlenecks/rubbos/app/httpd-2.0.64/srclib/apr-util/xml/expat/lib'
+
+# Version information for libworker.
+current=
+age=
+revision=
+
+# Is this an already installed library?
+installed=no
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir=''
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/pod.o b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/pod.o
new file mode 100644
index 00000000..42e89371
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/pod.o
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/worker.o b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/worker.o
new file mode 100644
index 00000000..dc560c2b
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/.libs/worker.o
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/Makefile b/rubbos/app/httpd-2.0.64/server/mpm/worker/Makefile
new file mode 100644
index 00000000..6c812571
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/Makefile
@@ -0,0 +1,10 @@
+top_srcdir   = /bottlenecks/rubbos/app/httpd-2.0.64
+top_builddir = /bottlenecks/rubbos/app/httpd-2.0.64
+srcdir       = /bottlenecks/rubbos/app/httpd-2.0.64/server/mpm/worker
+builddir     = /bottlenecks/rubbos/app/httpd-2.0.64/server/mpm/worker
+VPATH        = /bottlenecks/rubbos/app/httpd-2.0.64/server/mpm/worker
+
+LTLIBRARY_NAME    = libworker.la
+LTLIBRARY_SOURCES = worker.c fdqueue.c pod.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/Makefile.in b/rubbos/app/httpd-2.0.64/server/mpm/worker/Makefile.in
new file mode 100644
index 00000000..b45b8483
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/Makefile.in
@@ -0,0 +1,5 @@
+
+LTLIBRARY_NAME    = libworker.la
+LTLIBRARY_SOURCES = worker.c fdqueue.c pod.c
+
+include $(top_srcdir)/build/ltlib.mk
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/config5.m4 b/rubbos/app/httpd-2.0.64/server/mpm/worker/config5.m4
new file mode 100644
index 00000000..cc131348
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/config5.m4
@@ -0,0 +1,6 @@
+dnl ## XXX - Need a more thorough check of the proper flags to use
+
+if test "$MPM_NAME" = "worker" ; then
+    AC_CHECK_FUNCS(pthread_kill)
+    APACHE_FAST_OUTPUT(server/mpm/$MPM_NAME/Makefile)
+fi
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c
new file mode 100644
index 00000000..17a819bf
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.c
@@ -0,0 +1,317 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fdqueue.h"
+
+struct fd_queue_info_t {
+    int idlers;
+    apr_thread_mutex_t *idlers_mutex;
+    apr_thread_cond_t *wait_for_idler;
+    int terminated;
+    int max_idlers;
+    apr_pool_t        **recycled_pools;
+    int num_recycled;
+};
+
+static apr_status_t queue_info_cleanup(void *data_)
+{
+    fd_queue_info_t *qi = data_;
+    int i;
+    apr_thread_cond_destroy(qi->wait_for_idler);
+    apr_thread_mutex_destroy(qi->idlers_mutex);
+    for (i = 0; i < qi->num_recycled; i++) {
+        apr_pool_destroy(qi->recycled_pools[i]);
+    }
+    return APR_SUCCESS;
+}
+
+apr_status_t ap_queue_info_create(fd_queue_info_t **queue_info,
+                                  apr_pool_t *pool, int max_idlers)
+{
+    apr_status_t rv;
+    fd_queue_info_t *qi;
+
+    qi = apr_palloc(pool, sizeof(*qi));
+    memset(qi, 0, sizeof(*qi));
+
+    rv = apr_thread_mutex_create(&qi->idlers_mutex, APR_THREAD_MUTEX_DEFAULT,
+                                 pool);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    rv = apr_thread_cond_create(&qi->wait_for_idler, pool);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    qi->recycled_pools = (apr_pool_t **)apr_palloc(pool, max_idlers *
+                                                   sizeof(apr_pool_t *));
+    qi->num_recycled = 0;
+    qi->max_idlers = max_idlers;
+    apr_pool_cleanup_register(pool, qi, queue_info_cleanup,
+                              apr_pool_cleanup_null);
+
+    *queue_info = qi;
+
+    return APR_SUCCESS;
+}
+
+apr_status_t ap_queue_info_set_idle(fd_queue_info_t *queue_info,
+                                    apr_pool_t *pool_to_recycle)
+{
+    apr_status_t rv;
+    rv = apr_thread_mutex_lock(queue_info->idlers_mutex);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    AP_DEBUG_ASSERT(queue_info->idlers >= 0);
+    AP_DEBUG_ASSERT(queue_info->num_recycled < queue_info->max_idlers);
+    if (pool_to_recycle) {
+        queue_info->recycled_pools[queue_info->num_recycled++] =
+            pool_to_recycle;
+    }
+    if (queue_info->idlers++ == 0) {
+        /* Only signal if we had no idlers before. */
+        apr_thread_cond_signal(queue_info->wait_for_idler);
+    }
+    rv = apr_thread_mutex_unlock(queue_info->idlers_mutex);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    return APR_SUCCESS;
+}
+
+apr_status_t ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
+                                          apr_pool_t **recycled_pool)
+{
+    apr_status_t rv;
+    *recycled_pool = NULL;
+    rv = apr_thread_mutex_lock(queue_info->idlers_mutex);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    AP_DEBUG_ASSERT(queue_info->idlers >= 0);
+    while ((queue_info->idlers == 0) && (!queue_info->terminated)) {
+        rv = apr_thread_cond_wait(queue_info->wait_for_idler,
+                                  queue_info->idlers_mutex);
+        if (rv != APR_SUCCESS) {
+            apr_status_t rv2;
+            rv2 = apr_thread_mutex_unlock(queue_info->idlers_mutex);
+            if (rv2 != APR_SUCCESS) {
+                return rv2;
+            }
+            return rv;
+        }
+    }
+    queue_info->idlers--; /* Oh, and idler? Let's take 'em! */
+    if (queue_info->num_recycled) {
+        *recycled_pool =
+            queue_info->recycled_pools[--queue_info->num_recycled];
+    }
+    rv = apr_thread_mutex_unlock(queue_info->idlers_mutex);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    else if (queue_info->terminated) {
+        return APR_EOF;
+    }
+    else {
+        return APR_SUCCESS;
+    }
+}
+
+apr_status_t ap_queue_info_term(fd_queue_info_t *queue_info)
+{
+    apr_status_t rv;
+    rv = apr_thread_mutex_lock(queue_info->idlers_mutex);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    queue_info->terminated = 1;
+    apr_thread_cond_broadcast(queue_info->wait_for_idler);
+    rv = apr_thread_mutex_unlock(queue_info->idlers_mutex);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    return APR_SUCCESS;
+}
+
+/**
+ * Detects when the fd_queue_t is full. This utility function is expected
+ * to be called from within critical sections, and is not threadsafe.
+ */
+#define ap_queue_full(queue) ((queue)->nelts == (queue)->bounds)
+
+/**
+ * Detects when the fd_queue_t is empty. This utility function is expected
+ * to be called from within critical sections, and is not threadsafe.
+ */
+#define ap_queue_empty(queue) ((queue)->nelts == 0)
+
+/**
+ * Callback routine that is called to destroy this
+ * fd_queue_t when its pool is destroyed.
+ */
+static apr_status_t ap_queue_destroy(void *data) 
+{
+    fd_queue_t *queue = data;
+
+    /* Ignore errors here, we can't do anything about them anyway.
+     * XXX: We should at least try to signal an error here, it is
+     * indicative of a programmer error. -aaron */
+    apr_thread_cond_destroy(queue->not_empty);
+    apr_thread_mutex_destroy(queue->one_big_mutex);
+
+    return APR_SUCCESS;
+}
+
+/**
+ * Initialize the fd_queue_t.
+ */
+apr_status_t ap_queue_init(fd_queue_t *queue, int queue_capacity, apr_pool_t *a)
+{
+    int i;
+    apr_status_t rv;
+
+    if ((rv = apr_thread_mutex_create(&queue->one_big_mutex,
+                                      APR_THREAD_MUTEX_DEFAULT, a)) != APR_SUCCESS) {
+        return rv;
+    }
+    if ((rv = apr_thread_cond_create(&queue->not_empty, a)) != APR_SUCCESS) {
+        return rv;
+    }
+
+    queue->data = apr_palloc(a, queue_capacity * sizeof(fd_queue_elem_t));
+    queue->bounds = queue_capacity;
+    queue->nelts = 0;
+
+    /* Set all the sockets in the queue to NULL */
+    for (i = 0; i < queue_capacity; ++i)
+        queue->data[i].sd = NULL;
+
+    apr_pool_cleanup_register(a, queue, ap_queue_destroy, apr_pool_cleanup_null);
+
+    return APR_SUCCESS;
+}
+
+/**
+ * Push a new socket onto the queue. Blocks if the queue is full. Once
+ * the push operation has completed, it signals other threads waiting
+ * in ap_queue_pop() that they may continue consuming sockets.
+ */
+apr_status_t ap_queue_push(fd_queue_t *queue, apr_socket_t *sd, apr_pool_t *p)
+{
+    fd_queue_elem_t *elem;
+    apr_status_t rv;
+
+    if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+
+    AP_DEBUG_ASSERT(!queue->terminated);
+    AP_DEBUG_ASSERT(!ap_queue_full(queue));
+
+    elem = &queue->data[queue->nelts];
+    elem->sd = sd;
+    elem->p = p;
+    queue->nelts++;
+
+    apr_thread_cond_signal(queue->not_empty);
+
+    if ((rv = apr_thread_mutex_unlock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+
+    return APR_SUCCESS;
+}
+
+/**
+ * Retrieves the next available socket from the queue. If there are no
+ * sockets available, it will block until one becomes available.
+ * Once retrieved, the socket is placed into the address specified by
+ * 'sd'.
+ */
+apr_status_t ap_queue_pop(fd_queue_t *queue, apr_socket_t **sd, apr_pool_t **p)
+{
+    fd_queue_elem_t *elem;
+    apr_status_t rv;
+
+    if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+
+    /* Keep waiting until we wake up and find that the queue is not empty. */
+    if (ap_queue_empty(queue)) {
+        if (!queue->terminated) {
+            apr_thread_cond_wait(queue->not_empty, queue->one_big_mutex);
+        }
+        /* If we wake up and it's still empty, then we were interrupted */
+        if (ap_queue_empty(queue)) {
+            rv = apr_thread_mutex_unlock(queue->one_big_mutex);
+            if (rv != APR_SUCCESS) {
+                return rv;
+            }
+            if (queue->terminated) {
+                return APR_EOF; /* no more elements ever again */
+            }
+            else {
+                return APR_EINTR;
+            }
+        }
+    } 
+
+    elem = &queue->data[--queue->nelts];
+    *sd = elem->sd;
+    *p = elem->p;
+#ifdef AP_DEBUG
+    elem->sd = NULL;
+    elem->p = NULL;
+#endif /* AP_DEBUG */
+
+    rv = apr_thread_mutex_unlock(queue->one_big_mutex);
+    return rv;
+}
+
+apr_status_t ap_queue_interrupt_all(fd_queue_t *queue)
+{
+    apr_status_t rv;
+    
+    if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    apr_thread_cond_broadcast(queue->not_empty);
+    if ((rv = apr_thread_mutex_unlock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    return APR_SUCCESS;
+}
+
+apr_status_t ap_queue_term(fd_queue_t *queue)
+{
+    apr_status_t rv;
+
+    if ((rv = apr_thread_mutex_lock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    /* we must hold one_big_mutex when setting this... otherwise,
+     * we could end up setting it and waking everybody up just after a 
+     * would-be popper checks it but right before they block
+     */
+    queue->terminated = 1;
+    if ((rv = apr_thread_mutex_unlock(queue->one_big_mutex)) != APR_SUCCESS) {
+        return rv;
+    }
+    return ap_queue_interrupt_all(queue);
+}
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.h b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.h
new file mode 100644
index 00000000..6dd55e03
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.h
@@ -0,0 +1,64 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef FDQUEUE_H
+#define FDQUEUE_H
+#include "httpd.h"
+#include <stdlib.h>
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <apr_thread_mutex.h>
+#include <apr_thread_cond.h>
+#include <sys/types.h>
+#if APR_HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#include <apr_errno.h>
+
+typedef struct fd_queue_info_t fd_queue_info_t;
+
+apr_status_t ap_queue_info_create(fd_queue_info_t **queue_info,
+                                  apr_pool_t *pool, int max_idlers);
+apr_status_t ap_queue_info_set_idle(fd_queue_info_t *queue_info,
+                                    apr_pool_t *pool_to_recycle);
+apr_status_t ap_queue_info_wait_for_idler(fd_queue_info_t *queue_info,
+                                          apr_pool_t **recycled_pool);
+apr_status_t ap_queue_info_term(fd_queue_info_t *queue_info);
+
+struct fd_queue_elem_t {
+    apr_socket_t      *sd;
+    apr_pool_t        *p;
+};
+typedef struct fd_queue_elem_t fd_queue_elem_t;
+
+struct fd_queue_t {
+    fd_queue_elem_t    *data;
+    int                 nelts;
+    int                 bounds;
+    apr_thread_mutex_t *one_big_mutex;
+    apr_thread_cond_t  *not_empty;
+    int                 terminated;
+};
+typedef struct fd_queue_t fd_queue_t;
+
+apr_status_t ap_queue_init(fd_queue_t *queue, int queue_capacity, apr_pool_t *a);
+apr_status_t ap_queue_push(fd_queue_t *queue, apr_socket_t *sd, apr_pool_t *p);
+apr_status_t ap_queue_pop(fd_queue_t *queue, apr_socket_t **sd, apr_pool_t **p);
+apr_status_t ap_queue_interrupt_all(fd_queue_t *queue);
+apr_status_t ap_queue_term(fd_queue_t *queue);
+
+#endif /* FDQUEUE_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.lo b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.lo
new file mode 100644
index 00000000..88d30c88
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.lo
@@ -0,0 +1,12 @@
+# fdqueue.lo - a libtool object file
+# Generated by ltmain.sh - GNU libtool 1.5.26 (1.1220.2.493 2008/02/01 16:58:18)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object='.libs/fdqueue.o'
+
+# Name of the non-PIC object.
+non_pic_object='fdqueue.o'
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.o b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.o
new file mode 100644
index 00000000..fb4a5ad1
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/fdqueue.o
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/libworker.la b/rubbos/app/httpd-2.0.64/server/mpm/worker/libworker.la
new file mode 100644
index 00000000..464032f9
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/libworker.la
@@ -0,0 +1,35 @@
+# libworker.la - a libtool library file
+# Generated by ltmain.sh - GNU libtool 1.5.26 (1.1220.2.493 2008/02/01 16:58:18)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# The name that we can dlopen(3).
+dlname=''
+
+# Names of this library.
+library_names=''
+
+# The name of the static archive.
+old_library='libworker.a'
+
+# Libraries that this one depends upon.
+dependency_libs=' -L/bottlenecks/rubbos/app/httpd-2.0.64/srclib/apr-util/xml/expat/lib'
+
+# Version information for libworker.
+current=
+age=
+revision=
+
+# Is this an already installed library?
+installed=no
+
+# Should we warn about portability when linking against -modules?
+shouldnotlink=no
+
+# Files to dlopen/dlpreopen
+dlopen=''
+dlpreopen=''
+
+# Directory that this library needs to be installed in:
+libdir=''
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/mpm.h b/rubbos/app/httpd-2.0.64/server/mpm/worker/mpm.h
new file mode 100644
index 00000000..31830c6c
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/mpm.h
@@ -0,0 +1,50 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "scoreboard.h"
+#include "unixd.h"
+
+#ifndef APACHE_MPM_WORKER_H
+#define APACHE_MPM_WORKER_H
+
+#define WORKER_MPM
+
+#define MPM_NAME "Worker"
+
+#define AP_MPM_WANT_RECLAIM_CHILD_PROCESSES
+#define AP_MPM_WANT_WAIT_OR_TIMEOUT
+#define AP_MPM_WANT_PROCESS_CHILD_STATUS
+#define AP_MPM_WANT_SET_PIDFILE
+#define AP_MPM_WANT_SET_SCOREBOARD
+#define AP_MPM_WANT_SET_LOCKFILE
+#define AP_MPM_WANT_SET_MAX_REQUESTS
+#define AP_MPM_WANT_SET_COREDUMPDIR
+#define AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+#define AP_MPM_WANT_SIGNAL_SERVER
+#define AP_MPM_WANT_SET_MAX_MEM_FREE
+#define AP_MPM_WANT_FATAL_SIGNAL_HANDLER
+#define AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
+
+#define MPM_CHILD_PID(i) (ap_scoreboard_image->parent[i].pid)
+#define MPM_NOTE_CHILD_KILLED(i) (MPM_CHILD_PID(i) = 0)
+#define MPM_ACCEPT_FUNC unixd_accept
+
+extern int ap_threads_per_child;
+extern int ap_max_daemons_limit;
+extern server_rec *ap_server_conf;
+extern char ap_coredump_dir[MAX_STRING_LEN];
+
+#endif /* APACHE_MPM_WORKER_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/mpm_default.h b/rubbos/app/httpd-2.0.64/server/mpm/worker/mpm_default.h
new file mode 100644
index 00000000..d5a33989
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/mpm_default.h
@@ -0,0 +1,69 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef APACHE_MPM_DEFAULT_H
+#define APACHE_MPM_DEFAULT_H
+
+/* Number of servers to spawn off by default --- also, if fewer than
+ * this free when the caretaker checks, it will spawn more.
+ */
+#ifndef DEFAULT_START_DAEMON
+#define DEFAULT_START_DAEMON 3
+#endif
+
+/* Maximum number of *free* server processes --- more than this, and
+ * they will die off.
+ */
+
+#ifndef DEFAULT_MAX_FREE_DAEMON
+#define DEFAULT_MAX_FREE_DAEMON 10
+#endif
+
+/* Minimum --- fewer than this, and more will be created */
+
+#ifndef DEFAULT_MIN_FREE_DAEMON
+#define DEFAULT_MIN_FREE_DAEMON 3
+#endif
+
+#ifndef DEFAULT_THREADS_PER_CHILD
+#define DEFAULT_THREADS_PER_CHILD 25
+#endif
+
+/* File used for accept locking, when we use a file */
+#ifndef DEFAULT_LOCKFILE
+#define DEFAULT_LOCKFILE DEFAULT_REL_RUNTIMEDIR "/accept.lock"
+#endif
+
+/* Where the main/parent process's pid is logged */
+#ifndef DEFAULT_PIDLOG
+#define DEFAULT_PIDLOG DEFAULT_REL_RUNTIMEDIR "/httpd.pid"
+#endif
+
+/*
+ * Interval, in microseconds, between scoreboard maintenance.
+ */
+#ifndef SCOREBOARD_MAINTENANCE_INTERVAL
+#define SCOREBOARD_MAINTENANCE_INTERVAL 1000000
+#endif
+
+/* Number of requests to try to handle in a single process.  If <= 0,
+ * the children don't die off.
+ */
+#ifndef DEFAULT_MAX_REQUESTS_PER_CHILD
+#define DEFAULT_MAX_REQUESTS_PER_CHILD 10000
+#endif
+
+#endif /* AP_MPM_DEFAULT_H */
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.c b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.c
new file mode 100644
index 00000000..3a9a266e
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.c
@@ -0,0 +1,112 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "pod.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_open(apr_pool_t *p, ap_pod_t **pod)
+{
+    apr_status_t rv;
+
+    *pod = apr_palloc(p, sizeof(**pod));
+    rv = apr_file_pipe_create(&((*pod)->pod_in), &((*pod)->pod_out), p);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+/*
+    apr_file_pipe_timeout_set((*pod)->pod_in, 0);
+*/
+    (*pod)->p = p;
+    
+    /* close these before exec. */
+    apr_file_unset_inherit((*pod)->pod_in);
+    apr_file_unset_inherit((*pod)->pod_out);
+
+    return APR_SUCCESS;
+}
+
+AP_DECLARE(int) ap_mpm_pod_check(ap_pod_t *pod)
+{
+    char c;
+    apr_os_file_t fd;
+    int rc;
+
+    /* we need to surface EINTR so we'll have to grab the
+     * native file descriptor and do the OS read() ourselves
+     */
+    apr_os_file_get(&fd, pod->pod_in);
+    rc = read(fd, &c, 1);
+    if (rc == 1) {
+        switch(c) {
+        case RESTART_CHAR:
+            return AP_RESTART;
+        case GRACEFUL_CHAR:
+            return AP_GRACEFUL;
+        }
+    }
+    return AP_NORESTART;
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_close(ap_pod_t *pod)
+{
+    apr_status_t rv;
+
+    rv = apr_file_close(pod->pod_out);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+
+    rv = apr_file_close(pod->pod_in);
+    if (rv != APR_SUCCESS) {
+        return rv;
+    }
+    return rv;
+}
+
+static apr_status_t pod_signal_internal(ap_pod_t *pod, int graceful)
+{
+    apr_status_t rv;
+    char char_of_death = graceful ? GRACEFUL_CHAR : RESTART_CHAR;
+    apr_size_t one = 1;
+
+    do {
+        rv = apr_file_write(pod->pod_out, &char_of_death, &one);
+    } while (APR_STATUS_IS_EINTR(rv));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, rv, ap_server_conf,
+                     "write pipe_of_death");
+    }
+    return rv;
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_signal(ap_pod_t *pod, int graceful)
+{
+    return pod_signal_internal(pod, graceful);
+}
+
+AP_DECLARE(void) ap_mpm_pod_killpg(ap_pod_t *pod, int num, int graceful)
+{
+    int i;
+    apr_status_t rv = APR_SUCCESS;
+
+    for (i = 0; i < num && rv == APR_SUCCESS; i++) {
+        rv = pod_signal_internal(pod, graceful);
+    }
+}
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.h b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.h
new file mode 100644
index 00000000..21651e6f
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.h
@@ -0,0 +1,50 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#include "httpd.h"
+#include "http_config.h"
+#include "http_log.h"
+#include "http_main.h"
+#include "mpm.h"
+#include "mpm_common.h"
+#include "ap_mpm.h"
+#include "ap_listen.h"
+#include "mpm_default.h"
+
+#define RESTART_CHAR '$'
+#define GRACEFUL_CHAR '!'
+
+#define AP_RESTART  0
+#define AP_GRACEFUL 1
+
+typedef struct ap_pod_t ap_pod_t;
+
+struct ap_pod_t {
+    apr_file_t *pod_in;
+    apr_file_t *pod_out;
+    apr_pool_t *p;
+};
+
+AP_DECLARE(apr_status_t) ap_mpm_pod_open(apr_pool_t *p, ap_pod_t **pod);
+AP_DECLARE(int) ap_mpm_pod_check(ap_pod_t *pod);
+AP_DECLARE(apr_status_t) ap_mpm_pod_close(ap_pod_t *pod);
+AP_DECLARE(apr_status_t) ap_mpm_pod_signal(ap_pod_t *pod, int graceful);
+AP_DECLARE(void) ap_mpm_pod_killpg(ap_pod_t *pod, int num, int graceful);
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.lo b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.lo
new file mode 100644
index 00000000..b284c939
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.lo
@@ -0,0 +1,12 @@
+# pod.lo - a libtool object file
+# Generated by ltmain.sh - GNU libtool 1.5.26 (1.1220.2.493 2008/02/01 16:58:18)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object='.libs/pod.o'
+
+# Name of the non-PIC object.
+non_pic_object='pod.o'
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.o b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.o
new file mode 100644
index 00000000..42e89371
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/pod.o
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.c b/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.c
new file mode 100644
index 00000000..6e0da647
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.c
@@ -0,0 +1,2136 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/* The purpose of this MPM is to fix the design flaws in the threaded
+ * model.  Because of the way that pthreads and mutex locks interact,
+ * it is basically impossible to cleanly gracefully shutdown a child
+ * process if multiple threads are all blocked in accept.  This model
+ * fixes those problems.
+ */
+
+#include "apr.h"
+#include "apr_portable.h"
+#include "apr_strings.h"
+#include "apr_file_io.h"
+#include "apr_thread_proc.h"
+#include "apr_signal.h"
+#include "apr_thread_mutex.h"
+#include "apr_proc_mutex.h"
+#include "apr_poll.h"
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if APR_HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#if APR_HAVE_SYS_WAIT_H
+#include <sys/wait.h> 
+#endif
+#ifdef HAVE_SYS_PROCESSOR_H
+#include <sys/processor.h> /* for bindprocessor() */
+#endif
+
+#if !APR_HAS_THREADS
+#error The Worker MPM requires APR threads, but they are unavailable.
+#endif
+
+#define CORE_PRIVATE 
+ 
+#include "ap_config.h"
+#include "httpd.h" 
+#include "http_main.h" 
+#include "http_log.h" 
+#include "http_config.h"        /* for read_config */ 
+#include "http_core.h"          /* for get_remote_host */ 
+#include "http_connection.h"
+#include "ap_mpm.h"
+#include "pod.h"
+#include "mpm_common.h"
+#include "ap_listen.h"
+#include "scoreboard.h" 
+#include "fdqueue.h"
+#include "mpm_default.h"
+
+#include <signal.h>
+#include <limits.h>             /* for INT_MAX */
+
+/* Limit on the total --- clients will be locked out if more servers than
+ * this are needed.  It is intended solely to keep the server from crashing
+ * when things get out of hand.
+ *
+ * We keep a hard maximum number of servers, for two reasons --- first off,
+ * in case something goes seriously wrong, we want to stop the fork bomb
+ * short of actually crashing the machine we're running on by filling some
+ * kernel table.  Secondly, it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_SERVER_LIMIT
+#define DEFAULT_SERVER_LIMIT 16
+#endif
+
+/* Admin can't tune ServerLimit beyond MAX_SERVER_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_SERVER_LIMIT
+#define MAX_SERVER_LIMIT 20000
+#endif
+
+/* Limit on the threads per process.  Clients will be locked out if more than
+ * this  * server_limit are needed.
+ *
+ * We keep this for one reason it keeps the size of the scoreboard file small
+ * enough that we can read the whole thing without worrying too much about
+ * the overhead.
+ */
+#ifndef DEFAULT_THREAD_LIMIT
+#define DEFAULT_THREAD_LIMIT 64 
+#endif
+
+/* Admin can't tune ThreadLimit beyond MAX_THREAD_LIMIT.  We want
+ * some sort of compile-time limit to help catch typos.
+ */
+#ifndef MAX_THREAD_LIMIT
+#define MAX_THREAD_LIMIT 20000
+#endif
+
+/*
+ * Actual definitions of config globals
+ */
+
+int ap_threads_per_child = 0;         /* Worker threads per child */
+static int ap_daemons_to_start = 0;
+static int min_spare_threads = 0;
+static int max_spare_threads = 0;
+static int ap_daemons_limit = 0;
+static int server_limit = DEFAULT_SERVER_LIMIT;
+static int first_server_limit;
+static int thread_limit = DEFAULT_THREAD_LIMIT;
+static int first_thread_limit;
+static int changed_limit_at_restart;
+static int dying = 0;
+static int workers_may_exit = 0;
+static int start_thread_may_exit = 0;
+static int listener_may_exit = 0;
+static int requests_this_child;
+static int num_listensocks = 0;
+static int resource_shortage = 0;
+static fd_queue_t *worker_queue;
+static fd_queue_info_t *worker_queue_info;
+static int mpm_state = AP_MPMQ_STARTING;
+static int sick_child_detected;
+
+/* The structure used to pass unique initialization info to each thread */
+typedef struct {
+    int pid;
+    int tid;
+    int sd;
+} proc_info;
+
+/* Structure used to pass information to the thread responsible for 
+ * creating the rest of the threads.
+ */
+typedef struct {
+    apr_thread_t **threads;
+    apr_thread_t *listener;
+    int child_num_arg;
+    apr_threadattr_t *threadattr;
+} thread_starter;
+
+#define ID_FROM_CHILD_THREAD(c, t)    ((c * thread_limit) + t)
+
+/*
+ * The max child slot ever assigned, preserved across restarts.  Necessary
+ * to deal with MaxClients changes across AP_SIG_GRACEFUL restarts.  We 
+ * use this value to optimize routines that have to scan the entire 
+ * scoreboard.
+ */
+int ap_max_daemons_limit = -1;
+
+static ap_pod_t *pod;
+
+/* *Non*-shared http_main globals... */
+
+server_rec *ap_server_conf;
+
+/* The worker MPM respects a couple of runtime flags that can aid
+ * in debugging. Setting the -DNO_DETACH flag will prevent the root process
+ * from detaching from its controlling terminal. Additionally, setting
+ * the -DONE_PROCESS flag (which implies -DNO_DETACH) will get you the
+ * child_main loop running in the process which originally started up.
+ * This gives you a pretty nice debugging environment.  (You'll get a SIGHUP
+ * early in standalone_main; just continue through.  This is the server
+ * trying to kill off any child processes which it might have lying
+ * around --- Apache doesn't keep track of their pids, it just sends
+ * SIGHUP to the process group, ignoring it in the root process.
+ * Continue through and you'll be fine.).
+ */
+
+static int one_process = 0;
+
+#ifdef DEBUG_SIGSTOP
+int raise_sigstop_flags;
+#endif
+
+static apr_pool_t *pconf;                 /* Pool for config stuff */
+static apr_pool_t *pchild;                /* Pool for httpd child stuff */
+
+static pid_t ap_my_pid; /* Linux getpid() doesn't work except in main 
+                           thread. Use this instead */
+static pid_t parent_pid;
+static apr_os_thread_t *listener_os_thread;
+
+/* Locks for accept serialization */
+static apr_proc_mutex_t *accept_mutex;
+
+#ifdef SINGLE_LISTEN_UNSERIALIZED_ACCEPT
+#define SAFE_ACCEPT(stmt) (ap_listeners->next ? (stmt) : APR_SUCCESS)
+#else
+#define SAFE_ACCEPT(stmt) (stmt)
+#endif
+
+/* The LISTENER_SIGNAL signal will be sent from the main thread to the 
+ * listener thread to wake it up for graceful termination (what a child 
+ * process from an old generation does when the admin does "apachectl 
+ * graceful").  This signal will be blocked in all threads of a child
+ * process except for the listener thread.
+ */
+#define LISTENER_SIGNAL     SIGHUP
+
+/* An array of socket descriptors in use by each thread used to
+ * perform a non-graceful (forced) shutdown of the server. */
+static apr_socket_t **worker_sockets;
+
+static void close_worker_sockets(void)
+{
+    int i;
+    for (i = 0; i < ap_threads_per_child; i++) {
+        if (worker_sockets[i]) {
+            apr_socket_close(worker_sockets[i]);
+            worker_sockets[i] = NULL;
+        }
+    }
+}
+  
+static void wakeup_listener(void)
+{
+    listener_may_exit = 1;
+    if (!listener_os_thread) {
+        /* XXX there is an obscure path that this doesn't handle perfectly:
+         *     right after listener thread is created but before 
+         *     listener_os_thread is set, the first worker thread hits an
+         *     error and starts graceful termination
+         */
+        return;
+    }
+    /*
+     * we should just be able to "kill(ap_my_pid, LISTENER_SIGNAL)" on all
+     * platforms and wake up the listener thread since it is the only thread 
+     * with SIGHUP unblocked, but that doesn't work on Linux
+     */
+#ifdef HAVE_PTHREAD_KILL
+    pthread_kill(*listener_os_thread, LISTENER_SIGNAL);
+#else
+    kill(ap_my_pid, LISTENER_SIGNAL);
+#endif
+}
+
+#define ST_INIT              0
+#define ST_GRACEFUL          1
+#define ST_UNGRACEFUL        2
+
+static int terminate_mode = ST_INIT;
+
+static void signal_threads(int mode)
+{
+    if (terminate_mode == mode) {
+        return;
+    }
+    terminate_mode = mode;
+    mpm_state = AP_MPMQ_STOPPING;
+
+    /* in case we weren't called from the listener thread, wake up the
+     * listener thread
+     */
+    wakeup_listener();
+
+    /* for ungraceful termination, let the workers exit now;
+     * for graceful termination, the listener thread will notify the
+     * workers to exit once it has stopped accepting new connections
+     */
+    if (mode == ST_UNGRACEFUL) {
+        workers_may_exit = 1;
+        ap_queue_interrupt_all(worker_queue);
+        ap_queue_info_term(worker_queue_info);
+        close_worker_sockets(); /* forcefully kill all current connections */
+    }
+}
+
+AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)
+{
+    switch(query_code){
+        case AP_MPMQ_MAX_DAEMON_USED:
+            *result = ap_max_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_THREADED:
+            *result = AP_MPMQ_STATIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_IS_FORKED:
+            *result = AP_MPMQ_DYNAMIC;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_DAEMONS:
+            *result = server_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_HARD_LIMIT_THREADS:
+            *result = thread_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_THREADS:
+            *result = ap_threads_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MIN_SPARE_THREADS:    
+            *result = min_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_DAEMONS:
+            *result = 0;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_SPARE_THREADS:
+            *result = max_spare_threads;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_REQUESTS_DAEMON:
+            *result = ap_max_requests_per_child;
+            return APR_SUCCESS;
+        case AP_MPMQ_MAX_DAEMONS:
+            *result = ap_daemons_limit;
+            return APR_SUCCESS;
+        case AP_MPMQ_MPM_STATE:
+            *result = mpm_state;
+            return APR_SUCCESS;
+    }
+    return APR_ENOTIMPL;
+}
+
+/* a clean exit from a child with proper cleanup */ 
+static void clean_child_exit(int code) __attribute__ ((noreturn));
+static void clean_child_exit(int code)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (pchild) {
+        apr_pool_destroy(pchild);
+    }
+    exit(code);
+}
+
+static void just_die(int sig)
+{
+    clean_child_exit(0);
+}
+
+/*****************************************************************
+ * Connection structures and accounting...
+ */
+
+/* volatile just in case */
+static int volatile shutdown_pending;
+static int volatile restart_pending;
+static int volatile is_graceful;
+static volatile int child_fatal;
+ap_generation_t volatile ap_my_generation;
+
+/*
+ * ap_start_shutdown() and ap_start_restart(), below, are a first stab at
+ * functions to initiate shutdown or restart without relying on signals. 
+ * Previously this was initiated in sig_term() and restart() signal handlers, 
+ * but we want to be able to start a shutdown/restart from other sources --
+ * e.g. on Win32, from the service manager. Now the service manager can
+ * call ap_start_shutdown() or ap_start_restart() as appropiate.  Note that
+ * these functions can also be called by the child processes, since global
+ * variables are no longer used to pass on the required action to the parent.
+ *
+ * These should only be called from the parent process itself, since the
+ * parent process will use the shutdown_pending and restart_pending variables
+ * to determine whether to shutdown or restart. The child process should
+ * call signal_parent() directly to tell the parent to die -- this will
+ * cause neither of those variable to be set, which the parent will
+ * assume means something serious is wrong (which it will be, for the
+ * child to force an exit) and so do an exit anyway.
+ */
+
+static void ap_start_shutdown(void)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (shutdown_pending == 1) {
+        /* Um, is this _probably_ not an error, if the user has
+         * tried to do a shutdown twice quickly, so we won't
+         * worry about reporting it.
+         */
+        return;
+    }
+    shutdown_pending = 1;
+}
+
+/* do a graceful restart if graceful == 1 */
+static void ap_start_restart(int graceful)
+{
+    mpm_state = AP_MPMQ_STOPPING;
+    if (restart_pending == 1) {
+        /* Probably not an error - don't bother reporting it */
+        return;
+    }
+    restart_pending = 1;
+    is_graceful = graceful;
+}
+
+static void sig_term(int sig)
+{
+    ap_start_shutdown();
+}
+
+static void restart(int sig)
+{
+    ap_start_restart(sig == AP_SIG_GRACEFUL);
+}
+
+static void set_signals(void)
+{
+#ifndef NO_USE_SIGACTION
+    struct sigaction sa;
+#endif
+
+    if (!one_process) {
+        ap_fatal_signal_setup(ap_server_conf, pconf);
+    }
+
+#ifndef NO_USE_SIGACTION
+    sigemptyset(&sa.sa_mask);
+    sa.sa_flags = 0;
+
+    sa.sa_handler = sig_term;
+    if (sigaction(SIGTERM, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGTERM)");
+#ifdef SIGINT
+    if (sigaction(SIGINT, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGINT)");
+#endif
+#ifdef SIGXCPU
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXCPU, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGXCPU)");
+#endif
+#ifdef SIGXFSZ
+    sa.sa_handler = SIG_DFL;
+    if (sigaction(SIGXFSZ, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGXFSZ)");
+#endif
+#ifdef SIGPIPE
+    sa.sa_handler = SIG_IGN;
+    if (sigaction(SIGPIPE, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGPIPE)");
+#endif
+
+    /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy 
+     * processing one */
+    sigaddset(&sa.sa_mask, SIGHUP);
+    sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);
+    sa.sa_handler = restart;
+    if (sigaction(SIGHUP, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(SIGHUP)");
+    if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)
+        ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, 
+                     "sigaction(" AP_SIG_GRACEFUL_STRING ")");
+#else
+    if (!one_process) {
+#ifdef SIGXCPU
+        apr_signal(SIGXCPU, SIG_DFL);
+#endif /* SIGXCPU */
+#ifdef SIGXFSZ
+        apr_signal(SIGXFSZ, SIG_DFL);
+#endif /* SIGXFSZ */
+    }
+
+    apr_signal(SIGTERM, sig_term);
+#ifdef SIGHUP
+    apr_signal(SIGHUP, restart);
+#endif /* SIGHUP */
+#ifdef AP_SIG_GRACEFUL
+    apr_signal(AP_SIG_GRACEFUL, restart);
+#endif /* AP_SIG_GRACEFUL */
+#ifdef SIGPIPE
+    apr_signal(SIGPIPE, SIG_IGN);
+#endif /* SIGPIPE */
+
+#endif
+}
+
+/*****************************************************************
+ * Here follows a long bunch of generic server bookkeeping stuff...
+ */
+
+int ap_graceful_stop_signalled(void)
+    /* XXX this is really a bad confusing obsolete name
+     * maybe it should be ap_mpm_process_exiting?
+     */
+{
+    /* note: for a graceful termination, listener_may_exit will be set before
+     *       workers_may_exit, so check listener_may_exit
+     */
+    return listener_may_exit;
+}
+
+/*****************************************************************
+ * Child process main loop.
+ */
+
+static void process_socket(apr_pool_t *p, apr_socket_t *sock, int my_child_num,
+                           int my_thread_num, apr_bucket_alloc_t *bucket_alloc)
+{
+    conn_rec *current_conn;
+    long conn_id = ID_FROM_CHILD_THREAD(my_child_num, my_thread_num);
+    int csd;
+    ap_sb_handle_t *sbh;
+
+    ap_create_sb_handle(&sbh, p, my_child_num, my_thread_num);
+    apr_os_sock_get(&csd, sock);
+
+    current_conn = ap_run_create_connection(p, ap_server_conf, sock,
+                                            conn_id, sbh, bucket_alloc);
+    if (current_conn) {
+        ap_process_connection(current_conn, sock);
+        ap_lingering_close(current_conn);
+    }
+}
+
+/* requests_this_child has gone to zero or below.  See if the admin coded
+   "MaxRequestsPerChild 0", and keep going in that case.  Doing it this way
+   simplifies the hot path in worker_thread */
+static void check_infinite_requests(void)
+{
+    if (ap_max_requests_per_child) {
+        signal_threads(ST_GRACEFUL);
+    }
+    else {
+        /* wow! if you're executing this code, you may have set a record.
+         * either this child process has served over 2 billion requests, or
+         * you're running a threaded 2.0 on a 16 bit machine.  
+         *
+         * I'll buy pizza and beers at Apachecon for the first person to do
+         * the former without cheating (dorking with INT_MAX, or running with
+         * uncommitted performance patches, for example).    
+         *
+         * for the latter case, you probably deserve a beer too.   Greg Ames
+         */
+            
+        requests_this_child = INT_MAX;      /* keep going */ 
+    }
+}
+
+static void unblock_signal(int sig)
+{
+    sigset_t sig_mask;
+
+    sigemptyset(&sig_mask);
+    sigaddset(&sig_mask, sig);
+#if defined(SIGPROCMASK_SETS_THREAD_MASK)
+    sigprocmask(SIG_UNBLOCK, &sig_mask, NULL);
+#else
+    pthread_sigmask(SIG_UNBLOCK, &sig_mask, NULL);
+#endif
+}
+
+static void dummy_signal_handler(int sig)
+{
+    /* XXX If specifying SIG_IGN is guaranteed to unblock a syscall,
+     *     then we don't need this goofy function.
+     */
+}
+
+static void *listener_thread(apr_thread_t *thd, void * dummy)
+{
+    proc_info * ti = dummy;
+    int process_slot = ti->pid;
+    apr_pool_t *tpool = apr_thread_pool_get(thd);
+    void *csd = NULL;
+    apr_pool_t *ptrans = NULL;            /* Pool for per-transaction stuff */
+    int n;
+    apr_pollfd_t *pollset;
+    apr_status_t rv;
+    ap_listen_rec *lr, *last_lr = ap_listeners;
+    int have_idle_worker = 0;
+
+    free(ti);
+
+    apr_poll_setup(&pollset, num_listensocks, tpool);
+    for(lr = ap_listeners ; lr != NULL ; lr = lr->next)
+        apr_poll_socket_add(pollset, lr->sd, APR_POLLIN);
+
+    /* Unblock the signal used to wake this thread up, and set a handler for
+     * it.
+     */
+    unblock_signal(LISTENER_SIGNAL);
+    apr_signal(LISTENER_SIGNAL, dummy_signal_handler);
+
+    /* TODO: Switch to a system where threads reuse the results from earlier
+       poll calls - manoj */
+    while (1) {
+        /* TODO: requests_this_child should be synchronized - aaron */
+        if (requests_this_child <= 0) {
+            check_infinite_requests();
+        }
+        if (listener_may_exit) break;
+
+        if (!have_idle_worker) {
+            /* the following pops a recycled ptrans pool off a stack
+             * if there is one, in addition to reserving a worker thread
+             */
+            rv = ap_queue_info_wait_for_idler(worker_queue_info,
+                                              &ptrans);
+            if (APR_STATUS_IS_EOF(rv)) {
+                break; /* we've been signaled to die now */
+            }
+            else if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                             "apr_queue_info_wait failed. Attempting to "
+                             " shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+                break;
+            }
+            have_idle_worker = 1;
+        }
+            
+        /* We've already decremented the idle worker count inside
+         * ap_queue_info_wait_for_idler. */
+
+        if ((rv = SAFE_ACCEPT(apr_proc_mutex_lock(accept_mutex)))
+            != APR_SUCCESS) {
+            int level = APLOG_EMERG;
+
+            if (listener_may_exit) {
+                break;
+            }
+            if (ap_scoreboard_image->parent[process_slot].generation != 
+                ap_scoreboard_image->global->running_generation) {
+                level = APLOG_DEBUG; /* common to get these at restart time */
+            }
+            ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                         "apr_proc_mutex_lock failed. Attempting to shutdown "
+                         "process gracefully.");
+            signal_threads(ST_GRACEFUL);
+            break;                    /* skip the lock release */
+        }
+
+        if (!ap_listeners->next) {
+            /* Only one listener, so skip the poll */
+            lr = ap_listeners;
+        }
+        else {
+            while (!listener_may_exit) {
+                apr_status_t ret;
+                apr_int16_t event;
+
+                ret = apr_poll(pollset, num_listensocks, &n, -1);
+                if (ret != APR_SUCCESS) {
+                    if (APR_STATUS_IS_EINTR(ret)) {
+                        continue;
+                    }
+
+                    /* apr_pollset_poll() will only return errors in catastrophic
+                     * circumstances. Let's try exiting gracefully, for now. */
+                    ap_log_error(APLOG_MARK, APLOG_ERR, ret, (const server_rec *)
+                                 ap_server_conf, "apr_poll: (listen)");
+                    signal_threads(ST_GRACEFUL);
+                }
+
+                if (listener_may_exit) break;
+
+                /* find a listener */
+                lr = last_lr;
+                do {
+                    lr = lr->next;
+                    if (lr == NULL) {
+                        lr = ap_listeners;
+                    }
+                    /* XXX: Should we check for POLLERR? */
+                    apr_poll_revents_get(&event, lr->sd, pollset);
+                    if (event & APR_POLLIN) {
+                        last_lr = lr;
+                        goto got_fd;
+                    }
+                } while (lr != last_lr);
+            }
+        }
+    got_fd:
+        if (!listener_may_exit) {
+            if (ptrans == NULL) {
+                /* we can't use a recycled transaction pool this time.
+                 * create a new transaction pool */
+                apr_allocator_t *allocator;
+
+                apr_allocator_create(&allocator);
+                apr_allocator_max_free_set(allocator, ap_max_mem_free);
+                apr_pool_create_ex(&ptrans, NULL, NULL, allocator);
+                apr_allocator_owner_set(allocator, ptrans);
+            }
+            apr_pool_tag(ptrans, "transaction");
+            rv = lr->accept_func(&csd, lr, ptrans);
+            /* later we trash rv and rely on csd to indicate success/failure */
+            AP_DEBUG_ASSERT(rv == APR_SUCCESS || !csd);
+
+            if (rv == APR_EGENERAL) {
+                /* E[NM]FILE, ENOMEM, etc */
+                resource_shortage = 1;
+                signal_threads(ST_GRACEFUL);
+            }
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(accept_mutex)))
+                != APR_SUCCESS) {
+                int level = APLOG_EMERG;
+
+                if (listener_may_exit) {
+                    break;
+                }
+                if (ap_scoreboard_image->parent[process_slot].generation != 
+                    ap_scoreboard_image->global->running_generation) {
+                    level = APLOG_DEBUG; /* common to get these at restart time */
+                }
+                ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+            }
+            if (csd != NULL) {
+                rv = ap_queue_push(worker_queue, csd, ptrans);
+                if (rv) {
+                    /* trash the connection; we couldn't queue the connected
+                     * socket to a worker 
+                     */
+                    apr_socket_close(csd);
+                    ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                                 "ap_queue_push failed");
+                }
+                else {
+                    have_idle_worker = 0;
+                }
+            }
+        }
+        else {
+            if ((rv = SAFE_ACCEPT(apr_proc_mutex_unlock(accept_mutex)))
+                != APR_SUCCESS) {
+                int level = APLOG_EMERG;
+
+                if (ap_scoreboard_image->parent[process_slot].generation != 
+                    ap_scoreboard_image->global->running_generation) {
+                    level = APLOG_DEBUG; /* common to get these at restart time */
+                }
+                ap_log_error(APLOG_MARK, level, rv, ap_server_conf,
+                             "apr_proc_mutex_unlock failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+            }
+            break;
+        }
+    }
+
+    ap_queue_term(worker_queue);
+    dying = 1;
+    ap_scoreboard_image->parent[process_slot].quiescing = 1;
+
+    /* wake up the main thread */
+    kill(ap_my_pid, SIGTERM);
+
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+/* XXX For ungraceful termination/restart, we definitely don't want to
+ *     wait for active connections to finish but we may want to wait
+ *     for idle workers to get out of the queue code and release mutexes,
+ *     since those mutexes are cleaned up pretty soon and some systems
+ *     may not react favorably (i.e., segfault) if operations are attempted
+ *     on cleaned-up mutexes.
+ */
+static void * APR_THREAD_FUNC worker_thread(apr_thread_t *thd, void * dummy)
+{
+    proc_info * ti = dummy;
+    int process_slot = ti->pid;
+    int thread_slot = ti->tid;
+    apr_socket_t *csd = NULL;
+    apr_bucket_alloc_t *bucket_alloc;
+    apr_pool_t *last_ptrans = NULL;
+    apr_pool_t *ptrans;                /* Pool for per-transaction stuff */
+    apr_status_t rv;
+    int is_idle = 0;
+
+    free(ti);
+
+    ap_update_child_status_from_indexes(process_slot, thread_slot, SERVER_STARTING, NULL);
+
+    while (!workers_may_exit) {
+        if (!is_idle) {
+            rv = ap_queue_info_set_idle(worker_queue_info, last_ptrans);
+            last_ptrans = NULL;
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                             "ap_queue_info_set_idle failed. Attempting to "
+                             "shutdown process gracefully.");
+                signal_threads(ST_GRACEFUL);
+                break;
+            }
+            is_idle = 1;
+        }
+
+        ap_update_child_status_from_indexes(process_slot, thread_slot, SERVER_READY, NULL);
+worker_pop:
+        if (workers_may_exit) {
+            break;
+        }
+        rv = ap_queue_pop(worker_queue, &csd, &ptrans);
+
+        if (rv != APR_SUCCESS) {
+            /* We get APR_EOF during a graceful shutdown once all the connections
+             * accepted by this server process have been handled.
+             */
+            if (APR_STATUS_IS_EOF(rv)) {
+                break;
+            }
+            /* We get APR_EINTR whenever ap_queue_pop() has been interrupted
+             * from an explicit call to ap_queue_interrupt_all(). This allows
+             * us to unblock threads stuck in ap_queue_pop() when a shutdown
+             * is pending.
+             *
+             * If workers_may_exit is set and this is ungraceful termination/
+             * restart, we are bound to get an error on some systems (e.g.,
+             * AIX, which sanity-checks mutex operations) since the queue
+             * may have already been cleaned up.  Don't log the "error" if
+             * workers_may_exit is set.
+             */
+            else if (APR_STATUS_IS_EINTR(rv)) {
+                goto worker_pop;
+            }
+            /* We got some other error. */
+            else if (!workers_may_exit) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "ap_queue_pop failed");
+            }
+            continue;
+        }
+        is_idle = 0;
+        worker_sockets[thread_slot] = csd;
+        bucket_alloc = apr_bucket_alloc_create(ptrans);
+        process_socket(ptrans, csd, process_slot, thread_slot, bucket_alloc);
+        worker_sockets[thread_slot] = NULL;
+        requests_this_child--; /* FIXME: should be synchronized - aaron */
+        apr_pool_clear(ptrans);
+        last_ptrans = ptrans;
+    }
+
+    ap_update_child_status_from_indexes(process_slot, thread_slot,
+        (dying) ? SERVER_DEAD : SERVER_GRACEFUL, (request_rec *) NULL);
+
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+static int check_signal(int signum)
+{
+    switch (signum) {
+    case SIGTERM:
+    case SIGINT:
+        return 1;
+    }
+    return 0;
+}
+
+static void create_listener_thread(thread_starter *ts)
+{
+    int my_child_num = ts->child_num_arg;
+    apr_threadattr_t *thread_attr = ts->threadattr;
+    proc_info *my_info;
+    apr_status_t rv;
+
+    my_info = (proc_info *)malloc(sizeof(proc_info));
+    my_info->pid = my_child_num;
+    my_info->tid = -1; /* listener thread doesn't have a thread slot */
+    my_info->sd = 0;
+    rv = apr_thread_create(&ts->listener, thread_attr, listener_thread,
+                           my_info, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "apr_thread_create: unable to create listener thread");
+        /* let the parent decide how bad this really is */
+        clean_child_exit(APEXIT_CHILDSICK);
+    }
+    apr_os_thread_get(&listener_os_thread, ts->listener);
+}
+
+/* XXX under some circumstances not understood, children can get stuck
+ *     in start_threads forever trying to take over slots which will
+ *     never be cleaned up; for now there is an APLOG_DEBUG message issued
+ *     every so often when this condition occurs
+ */
+static void * APR_THREAD_FUNC start_threads(apr_thread_t *thd, void *dummy)
+{
+    thread_starter *ts = dummy;
+    apr_thread_t **threads = ts->threads;
+    apr_threadattr_t *thread_attr = ts->threadattr;
+    int child_num_arg = ts->child_num_arg;
+    int my_child_num = child_num_arg;
+    proc_info *my_info;
+    apr_status_t rv;
+    int i;
+    int threads_created = 0;
+    int listener_started = 0;
+    int loops;
+    int prev_threads_created;
+
+    /* We must create the fd queues before we start up the listener
+     * and worker threads. */
+    worker_queue = apr_pcalloc(pchild, sizeof(*worker_queue));
+    rv = ap_queue_init(worker_queue, ap_threads_per_child, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "ap_queue_init() failed");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    rv = ap_queue_info_create(&worker_queue_info, pchild,
+                              ap_threads_per_child);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "ap_queue_info_create() failed");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    worker_sockets = apr_pcalloc(pchild, ap_threads_per_child
+                                        * sizeof(apr_socket_t *));
+
+    loops = prev_threads_created = 0;
+    while (1) {
+        /* ap_threads_per_child does not include the listener thread */
+        for (i = 0; i < ap_threads_per_child; i++) {
+            int status = ap_scoreboard_image->servers[child_num_arg][i].status;
+
+            if (status != SERVER_GRACEFUL && status != SERVER_DEAD) {
+                continue;
+            }
+
+            my_info = (proc_info *)malloc(sizeof(proc_info));
+            if (my_info == NULL) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+                             "malloc: out of memory");
+                clean_child_exit(APEXIT_CHILDFATAL);
+            }
+            my_info->pid = my_child_num;
+            my_info->tid = i;
+            my_info->sd = 0;
+        
+            /* We are creating threads right now */
+            ap_update_child_status_from_indexes(my_child_num, i,
+                                                SERVER_STARTING, NULL);
+            /* We let each thread update its own scoreboard entry.  This is
+             * done because it lets us deal with tid better.
+             */
+            rv = apr_thread_create(&threads[i], thread_attr, 
+                                   worker_thread, my_info, pchild);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                    "apr_thread_create: unable to create worker thread");
+                /* let the parent decide how bad this really is */
+                clean_child_exit(APEXIT_CHILDSICK);
+            }
+            threads_created++;
+        }
+        /* Start the listener only when there are workers available */
+        if (!listener_started && threads_created) {
+            create_listener_thread(ts);
+            listener_started = 1;
+        }
+        if (start_thread_may_exit || threads_created == ap_threads_per_child) {
+            break;
+        }
+        /* wait for previous generation to clean up an entry */
+        apr_sleep(apr_time_from_sec(1));
+        ++loops;
+        if (loops % 120 == 0) { /* every couple of minutes */
+            if (prev_threads_created == threads_created) {
+                ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                             "child %" APR_PID_T_FMT " isn't taking over "
+                             "slots very quickly (%d of %d)",
+                             ap_my_pid, threads_created, ap_threads_per_child);
+            }
+            prev_threads_created = threads_created;
+        }
+    }
+    
+    /* What state should this child_main process be listed as in the 
+     * scoreboard...?
+     *  ap_update_child_status_from_indexes(my_child_num, i, SERVER_STARTING, 
+     *                                      (request_rec *) NULL);
+     * 
+     *  This state should be listed separately in the scoreboard, in some kind
+     *  of process_status, not mixed in with the worker threads' status.   
+     *  "life_status" is almost right, but it's in the worker's structure, and 
+     *  the name could be clearer.   gla
+     */
+    apr_thread_exit(thd, APR_SUCCESS);
+    return NULL;
+}
+
+static void join_workers(apr_thread_t *listener, apr_thread_t **threads)
+{
+    int i;
+    apr_status_t rv, thread_rv;
+
+    if (listener) {
+        int iter;
+        
+        /* deal with a rare timing window which affects waking up the
+         * listener thread...  if the signal sent to the listener thread
+         * is delivered between the time it verifies that the
+         * listener_may_exit flag is clear and the time it enters a
+         * blocking syscall, the signal didn't do any good...  work around
+         * that by sleeping briefly and sending it again
+         */
+
+        iter = 0;
+        while (iter < 10 && 
+#ifdef HAVE_PTHREAD_KILL
+               pthread_kill(*listener_os_thread, 0)
+#else
+               kill(ap_my_pid, 0)
+#endif
+               == 0) {
+            /* listener not dead yet */
+            apr_sleep(apr_time_make(0, 500000));
+            wakeup_listener();
+            ++iter;
+        }
+        if (iter >= 10) {
+            ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                         "the listener thread didn't exit");
+        }
+        else {
+            rv = apr_thread_join(&thread_rv, listener);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "apr_thread_join: unable to join listener thread");
+            }
+        }
+    }
+    
+    for (i = 0; i < ap_threads_per_child; i++) {
+        if (threads[i]) { /* if we ever created this thread */
+            rv = apr_thread_join(&thread_rv, threads[i]);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                             "apr_thread_join: unable to join worker "
+                             "thread %d",
+                             i);
+            }
+        }
+    }
+}
+
+static void join_start_thread(apr_thread_t *start_thread_id)
+{
+    apr_status_t rv, thread_rv;
+
+    start_thread_may_exit = 1; /* tell it to give up in case it is still 
+                                * trying to take over slots from a 
+                                * previous generation
+                                */
+    rv = apr_thread_join(&thread_rv, start_thread_id);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_CRIT, rv, ap_server_conf,
+                     "apr_thread_join: unable to join the start "
+                     "thread");
+    }
+}
+
+static void child_main(int child_num_arg)
+{
+    apr_thread_t **threads;
+    apr_status_t rv;
+    thread_starter *ts;
+    apr_threadattr_t *thread_attr;
+    apr_thread_t *start_thread_id;
+
+    mpm_state = AP_MPMQ_STARTING; /* for benefit of any hooks that run as this
+                                   * child initializes
+                                   */
+    ap_my_pid = getpid();
+    ap_fatal_signal_child_setup(ap_server_conf);
+    apr_pool_create(&pchild, pconf);
+
+    /*stuff to do before we switch id's, so we have permissions.*/
+    ap_reopen_scoreboard(pchild, NULL, 0);
+
+    rv = SAFE_ACCEPT(apr_proc_mutex_child_init(&accept_mutex, ap_lock_fname,
+                                               pchild));
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize cross-process lock in child");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (unixd_setup_child()) {
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ap_run_child_init(pchild, ap_server_conf);
+
+    /* done with init critical section */
+
+    /* Just use the standard apr_setup_signal_thread to block all signals
+     * from being received.  The child processes no longer use signals for
+     * any communication with the parent process.
+     */
+    rv = apr_setup_signal_thread();
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, ap_server_conf,
+                     "Couldn't initialize signal thread");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    if (ap_max_requests_per_child) {
+        requests_this_child = ap_max_requests_per_child;
+    }
+    else {
+        /* coding a value of zero means infinity */
+        requests_this_child = INT_MAX;
+    }
+    
+    /* Setup worker threads */
+
+    /* clear the storage; we may not create all our threads immediately, 
+     * and we want a 0 entry to indicate a thread which was not created
+     */
+    threads = (apr_thread_t **)calloc(1, 
+                                sizeof(apr_thread_t *) * ap_threads_per_child);
+    if (threads == NULL) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
+                     "malloc: out of memory");
+        clean_child_exit(APEXIT_CHILDFATAL);
+    }
+
+    ts = (thread_starter *)apr_palloc(pchild, sizeof(*ts));
+
+    apr_threadattr_create(&thread_attr, pchild);
+    /* 0 means PTHREAD_CREATE_JOINABLE */
+    apr_threadattr_detach_set(thread_attr, 0);
+
+    ts->threads = threads;
+    ts->listener = NULL;
+    ts->child_num_arg = child_num_arg;
+    ts->threadattr = thread_attr;
+
+    rv = apr_thread_create(&start_thread_id, thread_attr, start_threads,
+                           ts, pchild);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT, rv, ap_server_conf,
+                     "apr_thread_create: unable to create worker thread");
+        /* let the parent decide how bad this really is */
+        clean_child_exit(APEXIT_CHILDSICK);
+    }
+
+    mpm_state = AP_MPMQ_RUNNING;
+
+    /* If we are only running in one_process mode, we will want to
+     * still handle signals. */
+    if (one_process) {
+        /* Block until we get a terminating signal. */
+        apr_signal_thread(check_signal);
+        /* make sure the start thread has finished; signal_threads() 
+         * and join_workers() depend on that
+         */
+        /* XXX join_start_thread() won't be awakened if one of our
+         *     threads encounters a critical error and attempts to
+         *     shutdown this child
+         */
+        join_start_thread(start_thread_id);
+        signal_threads(ST_UNGRACEFUL); /* helps us terminate a little more
+                           * quickly than the dispatch of the signal thread
+                           * beats the Pipe of Death and the browsers
+                           */
+        /* A terminating signal was received. Now join each of the
+         * workers to clean them up.
+         *   If the worker already exited, then the join frees
+         *   their resources and returns.
+         *   If the worker hasn't exited, then this blocks until
+         *   they have (then cleans up).
+         */
+        join_workers(ts->listener, threads);
+    }
+    else { /* !one_process */
+        /* remove SIGTERM from the set of blocked signals...  if one of
+         * the other threads in the process needs to take us down
+         * (e.g., for MaxRequestsPerChild) it will send us SIGTERM
+         */
+        unblock_signal(SIGTERM);
+        apr_signal(SIGTERM, dummy_signal_handler);
+        /* Watch for any messages from the parent over the POD */
+        while (1) {
+            rv = ap_mpm_pod_check(pod);
+            if (rv == AP_NORESTART) {
+                /* see if termination was triggered while we slept */
+                switch(terminate_mode) {
+                case ST_GRACEFUL:
+                    rv = AP_GRACEFUL;
+                    break;
+                case ST_UNGRACEFUL:
+                    rv = AP_RESTART;
+                    break;
+                }
+            }
+            if (rv == AP_GRACEFUL || rv == AP_RESTART) {
+                /* make sure the start thread has finished; 
+                 * signal_threads() and join_workers depend on that
+                 */
+                join_start_thread(start_thread_id);
+                signal_threads(rv == AP_GRACEFUL ? ST_GRACEFUL : ST_UNGRACEFUL);
+                break;
+            }
+        }
+
+        /* A terminating signal was received. Now join each of the
+         * workers to clean them up.
+         *   If the worker already exited, then the join frees
+         *   their resources and returns.
+         *   If the worker hasn't exited, then this blocks until
+         *   they have (then cleans up).
+         */
+        join_workers(ts->listener, threads);
+    }
+
+    free(threads);
+
+    clean_child_exit(resource_shortage ? APEXIT_CHILDSICK : 0);
+}
+
+static int make_child(server_rec *s, int slot) 
+{
+    int pid;
+
+    if (slot + 1 > ap_max_daemons_limit) {
+        ap_max_daemons_limit = slot + 1;
+    }
+
+    if (one_process) {
+        set_signals();
+        ap_scoreboard_image->parent[slot].pid = getpid();
+        child_main(slot);
+    }
+
+    if ((pid = fork()) == -1) {
+        ap_log_error(APLOG_MARK, APLOG_ERR, errno, s, 
+                     "fork: Unable to fork new process");
+
+        /* fork didn't succeed. Fix the scoreboard or else
+         * it will say SERVER_STARTING forever and ever
+         */
+        ap_update_child_status_from_indexes(slot, 0, SERVER_DEAD, NULL);
+
+        /* In case system resources are maxxed out, we don't want
+           Apache running away with the CPU trying to fork over and
+           over and over again. */
+        apr_sleep(apr_time_from_sec(10));
+
+        return -1;
+    }
+
+    if (!pid) {
+#ifdef HAVE_BINDPROCESSOR
+        /* By default, AIX binds to a single processor.  This bit unbinds
+         * children which will then bind to another CPU.
+         */
+        int status = bindprocessor(BINDPROCESS, (int)getpid(),
+                               PROCESSOR_CLASS_ANY);
+        if (status != OK)
+            ap_log_error(APLOG_MARK, APLOG_WARNING, errno, 
+                         ap_server_conf,
+                         "processor unbind failed %d", status);
+#endif
+        RAISE_SIGSTOP(MAKE_CHILD);
+
+        apr_signal(SIGTERM, just_die);
+        child_main(slot);
+
+        clean_child_exit(0);
+    }
+    /* else */
+    if (ap_scoreboard_image->parent[slot].pid != 0) {
+        /* This new child process is squatting on the scoreboard
+         * entry owned by an exiting child process, which cannot
+         * exit until all active requests complete.
+         * Don't forget about this exiting child process, or we
+         * won't be able to kill it if it doesn't exit by the
+         * time the server is shut down.
+         */
+        ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+                     "taking over scoreboard slot from %" APR_PID_T_FMT "%s",
+                     ap_scoreboard_image->parent[slot].pid,
+                     ap_scoreboard_image->parent[slot].quiescing ?
+                         " (quiescing)" : "");
+        ap_register_extra_mpm_process(ap_scoreboard_image->parent[slot].pid);
+    }
+    ap_scoreboard_image->parent[slot].quiescing = 0;
+    ap_scoreboard_image->parent[slot].pid = pid;
+    return 0;
+}
+
+/* start up a bunch of children */
+static void startup_children(int number_to_start)
+{
+    int i;
+
+    for (i = 0; number_to_start && i < ap_daemons_limit; ++i) {
+        if (ap_scoreboard_image->parent[i].pid != 0) {
+            continue;
+        }
+        if (make_child(ap_server_conf, i) < 0) {
+            break;
+        }
+        --number_to_start;
+    }
+}
+
+
+/*
+ * idle_spawn_rate is the number of children that will be spawned on the
+ * next maintenance cycle if there aren't enough idle servers.  It is
+ * doubled up to MAX_SPAWN_RATE, and reset only when a cycle goes by
+ * without the need to spawn.
+ */
+static int idle_spawn_rate = 1;
+#ifndef MAX_SPAWN_RATE
+#define MAX_SPAWN_RATE        (32)
+#endif
+static int hold_off_on_exponential_spawning;
+
+static void perform_idle_server_maintenance(void)
+{
+    int i, j;
+    int idle_thread_count;
+    worker_score *ws;
+    process_score *ps;
+    int free_length;
+    int totally_free_length = 0;
+    int free_slots[MAX_SPAWN_RATE];
+    int last_non_dead;
+    int total_non_dead;
+    int active_thread_count = 0;
+
+    /* initialize the free_list */
+    free_length = 0;
+
+    idle_thread_count = 0;
+    last_non_dead = -1;
+    total_non_dead = 0;
+
+    for (i = 0; i < ap_daemons_limit; ++i) {
+        /* Initialization to satisfy the compiler. It doesn't know
+         * that ap_threads_per_child is always > 0 */
+        int status = SERVER_DEAD;
+        int any_dying_threads = 0;
+        int any_dead_threads = 0;
+        int all_dead_threads = 1;
+
+        if (i >= ap_max_daemons_limit && totally_free_length == idle_spawn_rate)
+            break;
+        ps = &ap_scoreboard_image->parent[i];
+        for (j = 0; j < ap_threads_per_child; j++) {
+            ws = &ap_scoreboard_image->servers[i][j];
+            status = ws->status;
+
+            /* XXX any_dying_threads is probably no longer needed    GLA */
+            any_dying_threads = any_dying_threads || 
+                                (status == SERVER_GRACEFUL);
+            any_dead_threads = any_dead_threads || (status == SERVER_DEAD);
+            all_dead_threads = all_dead_threads &&
+                                   (status == SERVER_DEAD ||
+                                    status == SERVER_GRACEFUL);
+
+            /* We consider a starting server as idle because we started it
+             * at least a cycle ago, and if it still hasn't finished starting
+             * then we're just going to swamp things worse by forking more.
+             * So we hopefully won't need to fork more if we count it.
+             * This depends on the ordering of SERVER_READY and SERVER_STARTING.
+             */
+            if (ps->pid != 0) { /* XXX just set all_dead_threads in outer for
+                                   loop if no pid?  not much else matters */
+                if (status <= SERVER_READY && status != SERVER_DEAD &&
+                        !ps->quiescing &&
+                        ps->generation == ap_my_generation) {
+                    ++idle_thread_count;
+                }
+                if (status >= SERVER_READY && status < SERVER_GRACEFUL) {
+                    ++active_thread_count;
+                }
+            }
+        }
+        if (any_dead_threads && totally_free_length < idle_spawn_rate
+                && free_length < MAX_SPAWN_RATE
+                && (!ps->pid               /* no process in the slot */
+                    || ps->quiescing)) {   /* or at least one is going away */
+            if (all_dead_threads) {
+                /* great! we prefer these, because the new process can
+                 * start more threads sooner.  So prioritize this slot 
+                 * by putting it ahead of any slots with active threads.
+                 *
+                 * first, make room by moving a slot that's potentially still
+                 * in use to the end of the array
+                 */
+                free_slots[free_length] = free_slots[totally_free_length];
+                free_slots[totally_free_length++] = i;
+            }
+            else {
+                /* slot is still in use - back of the bus
+                 */
+            free_slots[free_length] = i;
+            }
+            ++free_length;
+        }
+        /* XXX if (!ps->quiescing)     is probably more reliable  GLA */
+        if (!any_dying_threads) {
+            last_non_dead = i;
+            ++total_non_dead;
+        }
+    }
+
+    if (sick_child_detected) {
+        if (active_thread_count > 0) {
+            /* some child processes appear to be working.  don't kill the
+             * whole server.
+             */
+            sick_child_detected = 0;
+        }
+        else {
+            /* looks like a basket case.  give up.  
+             */
+            shutdown_pending = 1;
+            child_fatal = 1;
+            ap_log_error(APLOG_MARK, APLOG_ALERT, 0,
+                         ap_server_conf,
+                         "No active workers found..."
+                         " Apache is exiting!");
+            /* the child already logged the failure details */
+            return;
+        }
+    }
+                                                    
+    ap_max_daemons_limit = last_non_dead + 1;
+
+    if (idle_thread_count > max_spare_threads) {
+        /* Kill off one child */
+        ap_mpm_pod_signal(pod, TRUE);
+        idle_spawn_rate = 1;
+    }
+    else if (idle_thread_count < min_spare_threads) {
+        /* terminate the free list */
+        if (free_length == 0) {
+            /* only report this condition once */
+            static int reported = 0;
+            
+            if (!reported) {
+                ap_log_error(APLOG_MARK, APLOG_ERR, 0, 
+                             ap_server_conf,
+                             "server reached MaxClients setting, consider"
+                             " raising the MaxClients setting");
+                reported = 1;
+            }
+            idle_spawn_rate = 1;
+        }
+        else {
+            if (free_length > idle_spawn_rate) {
+                free_length = idle_spawn_rate;
+            }
+            if (idle_spawn_rate >= 8) {
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0, 
+                             ap_server_conf,
+                             "server seems busy, (you may need "
+                             "to increase StartServers, ThreadsPerChild "
+                             "or Min/MaxSpareThreads), "
+                             "spawning %d children, there are around %d idle "
+                             "threads, and %d total children", free_length,
+                             idle_thread_count, total_non_dead);
+            }
+            for (i = 0; i < free_length; ++i) {
+                make_child(ap_server_conf, free_slots[i]);
+            }
+            /* the next time around we want to spawn twice as many if this
+             * wasn't good enough, but not if we've just done a graceful
+             */
+            if (hold_off_on_exponential_spawning) {
+                --hold_off_on_exponential_spawning;
+            }
+            else if (idle_spawn_rate < MAX_SPAWN_RATE) {
+                idle_spawn_rate *= 2;
+            }
+        }
+    }
+    else {
+      idle_spawn_rate = 1;
+    }
+}
+
+static void server_main_loop(int remaining_children_to_start)
+{
+    int child_slot;
+    apr_exit_why_e exitwhy;
+    int status, processed_status;
+    apr_proc_t pid;
+    int i;
+
+    while (!restart_pending && !shutdown_pending) {
+        ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);
+        
+        if (pid.pid != -1) {
+            processed_status = ap_process_child_status(&pid, exitwhy, status);
+            if (processed_status == APEXIT_CHILDFATAL) {
+                shutdown_pending = 1;
+                child_fatal = 1;
+                return;
+            }
+            else if (processed_status == APEXIT_CHILDSICK) {
+                /* tell perform_idle_server_maintenance to check into this
+                 * on the next timer pop
+                 */
+                sick_child_detected = 1;
+            }
+            /* non-fatal death... note that it's gone in the scoreboard. */
+            child_slot = find_child_by_pid(&pid);
+            if (child_slot >= 0) {
+                for (i = 0; i < ap_threads_per_child; i++)
+                    ap_update_child_status_from_indexes(child_slot, i, SERVER_DEAD, 
+                                                        (request_rec *) NULL);
+                
+                ap_scoreboard_image->parent[child_slot].pid = 0;
+                ap_scoreboard_image->parent[child_slot].quiescing = 0;
+                if (processed_status == APEXIT_CHILDSICK) {
+                    /* resource shortage, minimize the fork rate */
+                    idle_spawn_rate = 1;
+                }
+                else if (remaining_children_to_start
+                    && child_slot < ap_daemons_limit) {
+                    /* we're still doing a 1-for-1 replacement of dead
+                     * children with new children
+                     */
+                    make_child(ap_server_conf, child_slot);
+                    --remaining_children_to_start;
+                }
+            }
+            else if (ap_unregister_extra_mpm_process(pid.pid) == 1) {
+                /* handled */
+#if APR_HAS_OTHER_CHILD
+            }
+            else if (apr_proc_other_child_read(&pid, status) == 0) {
+                /* handled */
+#endif
+            }
+            else if (is_graceful) {
+                /* Great, we've probably just lost a slot in the
+                 * scoreboard.  Somehow we don't know about this child.
+                 */
+                ap_log_error(APLOG_MARK, APLOG_WARNING, 0,
+                             ap_server_conf,
+                             "long lost child came home! (pid %ld)",
+                             (long)pid.pid);
+            }
+            /* Don't perform idle maintenance when a child dies,
+             * only do it when there's a timeout.  Remember only a
+             * finite number of children can die, and it's pretty
+             * pathological for a lot to die suddenly.
+             */
+            continue;
+        }
+        else if (remaining_children_to_start) {
+            /* we hit a 1 second timeout in which none of the previous
+             * generation of children needed to be reaped... so assume
+             * they're all done, and pick up the slack if any is left.
+             */
+            startup_children(remaining_children_to_start);
+            remaining_children_to_start = 0;
+            /* In any event we really shouldn't do the code below because
+             * few of the servers we just started are in the IDLE state
+             * yet, so we'd mistakenly create an extra server.
+             */
+            continue;
+        }
+
+        perform_idle_server_maintenance();
+    }
+}
+
+int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
+{
+    int remaining_children_to_start;
+    apr_status_t rv;
+
+    ap_log_pid(pconf, ap_pid_fname);
+
+    first_server_limit = server_limit;
+    first_thread_limit = thread_limit;
+    if (changed_limit_at_restart) {
+        ap_log_error(APLOG_MARK, APLOG_WARNING, 0, s,
+                     "WARNING: Attempt to change ServerLimit or ThreadLimit "
+                     "ignored during restart");
+        changed_limit_at_restart = 0;
+    }
+    
+    /* Initialize cross-process accept lock */
+    ap_lock_fname = apr_psprintf(_pconf, "%s.%" APR_PID_T_FMT,
+                                 ap_server_root_relative(_pconf, ap_lock_fname),
+                                 ap_my_pid);
+
+    rv = apr_proc_mutex_create(&accept_mutex, ap_lock_fname, 
+                               ap_accept_lock_mech, _pconf);
+    if (rv != APR_SUCCESS) {
+        ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                     "Couldn't create accept lock");
+        mpm_state = AP_MPMQ_STOPPING;
+        return 1;
+    }
+
+#if APR_USE_SYSVSEM_SERIALIZE
+    if (ap_accept_lock_mech == APR_LOCK_DEFAULT || 
+        ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#else
+    if (ap_accept_lock_mech == APR_LOCK_SYSVSEM) {
+#endif
+        rv = unixd_set_proc_mutex_perms(accept_mutex);
+        if (rv != APR_SUCCESS) {
+            ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,
+                         "Couldn't set permissions on cross-process lock; "
+                         "check User and Group directives");
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+    }
+
+    if (!is_graceful) {
+        if (ap_run_pre_mpm(s->process->pool, SB_SHARED) != OK) {
+            mpm_state = AP_MPMQ_STOPPING;
+            return 1;
+        }
+        /* fix the generation number in the global score; we just got a new,
+         * cleared scoreboard
+         */
+        ap_scoreboard_image->global->running_generation = ap_my_generation;
+    }
+
+    set_signals();
+    /* Don't thrash... */
+    if (max_spare_threads < min_spare_threads + ap_threads_per_child)
+        max_spare_threads = min_spare_threads + ap_threads_per_child;
+
+    /* If we're doing a graceful_restart then we're going to see a lot
+     * of children exiting immediately when we get into the main loop
+     * below (because we just sent them AP_SIG_GRACEFUL).  This happens pretty
+     * rapidly... and for each one that exits we'll start a new one until
+     * we reach at least daemons_min_free.  But we may be permitted to
+     * start more than that, so we'll just keep track of how many we're
+     * supposed to start up without the 1 second penalty between each fork.
+     */
+    remaining_children_to_start = ap_daemons_to_start;
+    if (remaining_children_to_start > ap_daemons_limit) {
+        remaining_children_to_start = ap_daemons_limit;
+    }
+    if (!is_graceful) {
+        startup_children(remaining_children_to_start);
+        remaining_children_to_start = 0;
+    }
+    else {
+        /* give the system some time to recover before kicking into
+            * exponential mode */
+        hold_off_on_exponential_spawning = 10;
+    }
+
+    ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                "%s configured -- resuming normal operations",
+                ap_get_server_version());
+    ap_log_error(APLOG_MARK, APLOG_INFO, 0, ap_server_conf,
+                "Server built: %s", ap_get_server_built());
+#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
+    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, ap_server_conf,
+		"AcceptMutex: %s (default: %s)",
+		apr_proc_mutex_name(accept_mutex),
+		apr_proc_mutex_defname());
+#endif
+    restart_pending = shutdown_pending = 0;
+    mpm_state = AP_MPMQ_RUNNING;
+    
+    server_main_loop(remaining_children_to_start);
+    mpm_state = AP_MPMQ_STOPPING;
+
+    if (shutdown_pending) {
+        /* Time to gracefully shut down:
+         * Kill child processes, tell them to call child_exit, etc...
+         * (By "gracefully" we don't mean graceful in the same sense as 
+         * "apachectl graceful" where we allow old connections to finish.)
+         */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit, FALSE);
+        ap_reclaim_child_processes(1);                /* Start with SIGTERM */
+
+        if (!child_fatal) {
+            /* cleanup pid file on normal shutdown */
+            const char *pidfile = NULL;
+            pidfile = ap_server_root_relative (pconf, ap_pid_fname);
+            if ( pidfile != NULL && unlink(pidfile) == 0)
+                ap_log_error(APLOG_MARK, APLOG_INFO, 0,
+                             ap_server_conf,
+                             "removed PID file %s (pid=%ld)",
+                             pidfile, (long)getpid());
+    
+            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0,
+                         ap_server_conf, "caught SIGTERM, shutting down");
+        }
+        return 1;
+    }
+
+    /* we've been told to restart */
+    apr_signal(SIGHUP, SIG_IGN);
+
+    if (one_process) {
+        /* not worth thinking about */
+        return 1;
+    }
+
+    /* advance to the next generation */
+    /* XXX: we really need to make sure this new generation number isn't in
+     * use by any of the children.
+     */
+    ++ap_my_generation;
+    ap_scoreboard_image->global->running_generation = ap_my_generation;
+    
+    if (is_graceful) {
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                     AP_SIG_GRACEFUL_STRING " received.  Doing graceful restart");
+        /* wake up the children...time to die.  But we'll have more soon */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit, TRUE);
+    
+
+        /* This is mostly for debugging... so that we know what is still
+         * gracefully dealing with existing request.
+         */
+        
+    }
+    else {
+        /* Kill 'em all.  Since the child acts the same on the parents SIGTERM 
+         * and a SIGHUP, we may as well use the same signal, because some user
+         * pthreads are stealing signals from us left and right.
+         */
+        ap_mpm_pod_killpg(pod, ap_daemons_limit, FALSE);
+
+        ap_reclaim_child_processes(1);                /* Start with SIGTERM */
+        ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, ap_server_conf,
+                    "SIGHUP received.  Attempting to restart");
+    }
+
+    return 0;
+}
+
+/* This really should be a post_config hook, but the error log is already
+ * redirected by that point, so we need to do this in the open_logs phase.
+ */
+static int worker_open_logs(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
+{
+    apr_status_t rv;
+
+    pconf = p;
+    ap_server_conf = s;
+
+    if ((num_listensocks = ap_setup_listeners(ap_server_conf)) < 1) {
+        ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_STARTUP, 0,
+                     NULL, "no listening sockets available, shutting down");
+        return DONE;
+    }
+
+    if (!one_process) {
+        if ((rv = ap_mpm_pod_open(pconf, &pod))) {
+            ap_log_error(APLOG_MARK, APLOG_CRIT|APLOG_STARTUP, rv, NULL,
+                    "Could not open pipe-of-death.");
+            return DONE;
+        }
+    }
+    return OK;
+}
+
+static int worker_pre_config(apr_pool_t *pconf, apr_pool_t *plog, 
+                             apr_pool_t *ptemp)
+{
+    static int restart_num = 0;
+    int no_detach, debug, foreground;
+    ap_directive_t *pdir;
+    ap_directive_t *max_clients = NULL;
+    apr_status_t rv;
+
+    mpm_state = AP_MPMQ_STARTING;
+
+    /* make sure that "ThreadsPerChild" gets set before "MaxClients" */
+    for (pdir = ap_conftree; pdir != NULL; pdir = pdir->next) {
+        if (strncasecmp(pdir->directive, "ThreadsPerChild", 15) == 0) {
+            if (!max_clients) {
+                break; /* we're in the clear, got ThreadsPerChild first */
+            }
+            else {
+                /* now to swap the data */
+                ap_directive_t temp;
+
+                temp.directive = pdir->directive;
+                temp.args = pdir->args;
+                /* Make sure you don't change 'next', or you may get loops! */
+                /* XXX: first_child, parent, and data can never be set
+                 * for these directives, right? -aaron */
+                temp.filename = pdir->filename;
+                temp.line_num = pdir->line_num;
+
+                pdir->directive = max_clients->directive;
+                pdir->args = max_clients->args;
+                pdir->filename = max_clients->filename;
+                pdir->line_num = max_clients->line_num;
+                
+                max_clients->directive = temp.directive;
+                max_clients->args = temp.args;
+                max_clients->filename = temp.filename;
+                max_clients->line_num = temp.line_num;
+                break;
+            }
+        }
+        else if (!max_clients
+                 && strncasecmp(pdir->directive, "MaxClients", 10) == 0) {
+            max_clients = pdir;
+        }
+    }
+
+    debug = ap_exists_config_define("DEBUG");
+
+    if (debug) {
+        foreground = one_process = 1;
+        no_detach = 0;
+    }
+    else {
+        one_process = ap_exists_config_define("ONE_PROCESS");
+        no_detach = ap_exists_config_define("NO_DETACH");
+        foreground = ap_exists_config_define("FOREGROUND");
+    }
+
+    /* sigh, want this only the second time around */
+    if (restart_num++ == 1) {
+        is_graceful = 0;
+
+        if (!one_process && !foreground) {
+            rv = apr_proc_detach(no_detach ? APR_PROC_DETACH_FOREGROUND
+                                           : APR_PROC_DETACH_DAEMONIZE);
+            if (rv != APR_SUCCESS) {
+                ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL,
+                             "apr_proc_detach failed");
+                return HTTP_INTERNAL_SERVER_ERROR;
+            }
+        }
+        parent_pid = ap_my_pid = getpid();
+    }
+
+    unixd_pre_config(ptemp);
+    ap_listen_pre_config();
+    ap_daemons_to_start = DEFAULT_START_DAEMON;
+    min_spare_threads = DEFAULT_MIN_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
+    max_spare_threads = DEFAULT_MAX_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
+    ap_daemons_limit = server_limit;
+    ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
+    ap_pid_fname = DEFAULT_PIDLOG;
+    ap_lock_fname = DEFAULT_LOCKFILE;
+    ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
+    ap_extended_status = 0;
+#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
+	ap_max_mem_free = APR_ALLOCATOR_MAX_FREE_UNLIMITED;
+#endif
+
+    apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
+
+    return OK;
+}
+
+static void worker_hooks(apr_pool_t *p)
+{
+    /* The worker open_logs phase must run before the core's, or stderr
+     * will be redirected to a file, and the messages won't print to the
+     * console.
+     */
+    static const char *const aszSucc[] = {"core.c", NULL};
+    one_process = 0;
+
+    ap_hook_open_logs(worker_open_logs, NULL, aszSucc, APR_HOOK_MIDDLE);
+    /* we need to set the MPM state before other pre-config hooks use MPM query
+     * to retrieve it, so register as REALLY_FIRST
+     */
+    ap_hook_pre_config(worker_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
+}
+
+static const char *set_daemons_to_start(cmd_parms *cmd, void *dummy,
+                                        const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_daemons_to_start = atoi(arg);
+    return NULL;
+}
+
+static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    min_spare_threads = atoi(arg);
+    if (min_spare_threads <= 0) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: detected MinSpareThreads set to non-positive.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Resetting to 1 to avoid almost certain Apache failure.");
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "Please read the documentation.");
+       min_spare_threads = 1;
+    }
+       
+    return NULL;
+}
+
+static const char *set_max_spare_threads(cmd_parms *cmd, void *dummy,
+                                         const char *arg)
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    max_spare_threads = atoi(arg);
+    return NULL;
+}
+
+static const char *set_max_clients (cmd_parms *cmd, void *dummy,
+                                     const char *arg) 
+{
+    int max_clients;
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    /* It is ok to use ap_threads_per_child here because we are
+     * sure that it gets set before MaxClients in the pre_config stage. */
+    max_clients = atoi(arg);
+    if (max_clients < ap_threads_per_child) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients (%d) must be at least as large",
+                    max_clients);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " as ThreadsPerChild (%d). Automatically",
+                    ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " increasing MaxClients to %d.",
+                    ap_threads_per_child);
+       max_clients = ap_threads_per_child;
+    }
+    ap_daemons_limit = max_clients / ap_threads_per_child;
+    if ((max_clients > 0) && (max_clients % ap_threads_per_child)) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients (%d) is not an integer multiple",
+                    max_clients);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " of ThreadsPerChild (%d), lowering MaxClients to %d",
+                    ap_threads_per_child,
+                    ap_daemons_limit * ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " for a maximum of %d child processes,",
+                    ap_daemons_limit);
+       max_clients = ap_daemons_limit * ap_threads_per_child; 
+    }
+    if (ap_daemons_limit > server_limit) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: MaxClients of %d would require %d servers,",
+                    max_clients, ap_daemons_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " and would exceed the ServerLimit value of %d.",
+                    server_limit);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " Automatically lowering MaxClients to %d.  To increase,",
+                    server_limit * ap_threads_per_child);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " please see the ServerLimit directive.");
+       ap_daemons_limit = server_limit;
+    } 
+    else if (ap_daemons_limit < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require MaxClients > 0, setting to 1");
+        ap_daemons_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_threads_per_child (cmd_parms *cmd, void *dummy,
+                                          const char *arg) 
+{
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    ap_threads_per_child = atoi(arg);
+    if (ap_threads_per_child > thread_limit) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: ThreadsPerChild of %d exceeds ThreadLimit "
+                     "value of %d", ap_threads_per_child,
+                     thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "threads, lowering ThreadsPerChild to %d. To increase, please"
+                     " see the", thread_limit);
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     " ThreadLimit directive.");
+        ap_threads_per_child = thread_limit;
+    }
+    else if (ap_threads_per_child < 1) {
+        ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadsPerChild > 0, setting to 1");
+        ap_threads_per_child = 1;
+    }
+    return NULL;
+}
+
+static const char *set_server_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_server_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_server_limit = atoi(arg);
+    /* you cannot change ServerLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_server_limit &&
+        tmp_server_limit != server_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    server_limit = tmp_server_limit;
+    
+    if (server_limit > MAX_SERVER_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ServerLimit of %d exceeds compile time limit "
+                    "of %d servers,", server_limit, MAX_SERVER_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ServerLimit to %d.", MAX_SERVER_LIMIT);
+       server_limit = MAX_SERVER_LIMIT;
+    } 
+    else if (server_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ServerLimit > 0, setting to 1");
+	server_limit = 1;
+    }
+    return NULL;
+}
+
+static const char *set_thread_limit (cmd_parms *cmd, void *dummy, const char *arg) 
+{
+    int tmp_thread_limit;
+    
+    const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+    if (err != NULL) {
+        return err;
+    }
+
+    tmp_thread_limit = atoi(arg);
+    /* you cannot change ThreadLimit across a restart; ignore
+     * any such attempts
+     */
+    if (first_thread_limit &&
+        tmp_thread_limit != thread_limit) {
+        /* how do we log a message?  the error log is a bit bucket at this
+         * point; we'll just have to set a flag so that ap_mpm_run()
+         * logs a warning later
+         */
+        changed_limit_at_restart = 1;
+        return NULL;
+    }
+    thread_limit = tmp_thread_limit;
+    
+    if (thread_limit > MAX_THREAD_LIMIT) {
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    "WARNING: ThreadLimit of %d exceeds compile time limit "
+                    "of %d servers,", thread_limit, MAX_THREAD_LIMIT);
+       ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                    " lowering ThreadLimit to %d.", MAX_THREAD_LIMIT);
+       thread_limit = MAX_THREAD_LIMIT;
+    } 
+    else if (thread_limit < 1) {
+	ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, NULL, 
+                     "WARNING: Require ThreadLimit > 0, setting to 1");
+	thread_limit = 1;
+    }
+    return NULL;
+}
+
+static const command_rec worker_cmds[] = {
+UNIX_DAEMON_COMMANDS,
+LISTEN_COMMANDS,
+AP_INIT_TAKE1("StartServers", set_daemons_to_start, NULL, RSRC_CONF,
+  "Number of child processes launched at server startup"),
+AP_INIT_TAKE1("MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,
+  "Minimum number of idle threads, to handle request spikes"),
+AP_INIT_TAKE1("MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,
+  "Maximum number of idle threads"),
+AP_INIT_TAKE1("MaxClients", set_max_clients, NULL, RSRC_CONF,
+  "Maximum number of threads alive at the same time"),
+AP_INIT_TAKE1("ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF,
+  "Number of threads each child creates"),
+AP_INIT_TAKE1("ServerLimit", set_server_limit, NULL, RSRC_CONF,
+  "Maximum number of child processes for this run of Apache"),
+AP_INIT_TAKE1("ThreadLimit", set_thread_limit, NULL, RSRC_CONF,
+  "Maximum number of worker threads per child process for this run of Apache - Upper limit for ThreadsPerChild"),
+{ NULL }
+};
+
+module AP_MODULE_DECLARE_DATA mpm_worker_module = {
+    MPM20_MODULE_STUFF,
+    ap_mpm_rewrite_args,        /* hook to run before apache parses args */
+    NULL,                       /* create per-directory config structure */
+    NULL,                       /* merge per-directory config structures */
+    NULL,                       /* create per-server config structure */
+    NULL,                       /* merge per-server config structures */
+    worker_cmds,                /* command apr_table_t */
+    worker_hooks                /* register_hooks */
+};
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.lo b/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.lo
new file mode 100644
index 00000000..83f3b7ff
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.lo
@@ -0,0 +1,12 @@
+# worker.lo - a libtool object file
+# Generated by ltmain.sh - GNU libtool 1.5.26 (1.1220.2.493 2008/02/01 16:58:18)
+#
+# Please DO NOT delete this file!
+# It is necessary for linking the library.
+
+# Name of the PIC object.
+pic_object='.libs/worker.o'
+
+# Name of the non-PIC object.
+non_pic_object='worker.o'
+
diff --git a/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.o b/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.o
new file mode 100644
index 00000000..dc560c2b
--- /dev/null
+++ b/rubbos/app/httpd-2.0.64/server/mpm/worker/worker.o