diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/server/mpm/beos')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/beos/Makefile.in | 5 | ||||
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/beos/beos.c | 1159 | ||||
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/beos/beos.h | 26 | ||||
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/beos/config5.m4 | 7 | ||||
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/beos/mpm.h | 40 | ||||
| -rw-r--r-- | rubbos/app/httpd-2.0.64/server/mpm/beos/mpm_default.h | 76 |
6 files changed, 1313 insertions, 0 deletions
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 */ |