upload http

JIRA: BOTTLENECK-10

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

1 files changed, 1295 insertions, 0 deletions

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 */
+};