diff options
Diffstat (limited to 'server/mpm/beos/beos.c')
| -rw-r--r-- | server/mpm/beos/beos.c | 1122 |
1 files changed, 0 insertions, 1122 deletions
diff --git a/server/mpm/beos/beos.c b/server/mpm/beos/beos.c deleted file mode 100644 index c0128df9b5..0000000000 --- a/server/mpm/beos/beos.c +++ /dev/null @@ -1,1122 +0,0 @@ -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2000-2001 The Apache Software Foundation. All rights - * reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes software developed by the - * Apache Software Foundation (http://www.apache.org/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Apache" and "Apache Software Foundation" must - * not be used to endorse or promote products derived from this - * software without prior written permission. For written - * permission, please contact apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache", - * nor may "Apache" appear in their name, without prior written - * permission of the Apache Software Foundation. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Software Foundation. For more - * information on the Apache Software Foundation, please see - * <http://www.apache.org/>. - * - * Portions of this software are based upon public domain software - * originally written at the National Center for Supercomputing Applications, - * University of Illinois, Urbana-Champaign. - */ - -/* 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 "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 <kernel/OS.h> -#include "mpm_common.h" -#include "mpm.h" -#include <unistd.h> -#include <sys/socket.h> -#include <signal.h> - -/* - * Actual definitions of config globals - */ - -int ap_threads_per_child=HARD_THREAD_LIMIT; /* Worker threads per child */ -int ap_max_requests_per_child=0; -static const char *ap_pid_fname=NULL; -static int ap_threads_to_start=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; /* set by open_listeners in ap_mpm_run */ -static apr_socket_t ** listening_sockets; -apr_lock_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; - -/* Keep track of the number of worker threads currently active */ -static int worker_thread_count; -apr_lock_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; - -/* - * 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_child_assigned = -1; -int ap_max_threads_limit = -1; -char ap_coredump_dir[MAX_STRING_LEN]; - -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; -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; - if (is_graceful){ - apr_pool_cleanup_kill(pconf, NULL, ap_cleanup_scoreboard); - } -} - -static void sig_term(int sig) -{ - ap_start_shutdown(); -} - -static void restart(int sig) -{ - ap_start_restart(sig == SIGWINCH); -} - -static void tell_workers_to_exit(void) -{ - apr_size_t len; - int i = 0; - 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 WINCH while we're busy processing one */ - sigaddset(&sa.sa_mask, SIGHUP); - sigaddset(&sa.sa_mask, SIGWINCH); - 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(SIGWINCH, &sa, NULL) < 0) - ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGWINCH)"); -} - -/***************************************************************** - * 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) -{ - conn_rec *current_conn; - long conn_id = my_child_num; - int csd; - - (void)apr_os_sock_get(&csd, sock); - - if (csd >= FD_SETSIZE) { - ap_log_error(APLOG_MARK, APLOG_NOERRNO|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; - } - - current_conn = ap_new_connection(p, ap_server_conf, sock, conn_id); - - if (current_conn) { - ap_process_connection(current_conn); - 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_socket_t *csd = NULL; - apr_pool_t *ptrans; /* Pool for per-transaction stuff */ - 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_child; - apr_pollfd_t *pollset; - /* each worker thread is in control of it's own destiny...*/ - int this_worker_should_exit = 0; - free(ti); - - /* block the signals for this thread */ - sigfillset(&sig_mask); - sigprocmask(SIG_BLOCK, &sig_mask, NULL); - - apr_pool_create(&ptrans, tpool); - - apr_lock_acquire(worker_thread_count_mutex); - worker_thread_count++; - apr_lock_release(worker_thread_count_mutex); - - (void) ap_update_child_status(0, child_slot, SERVER_STARTING, - (request_rec*)NULL); - - apr_poll_setup(&pollset, num_listening_sockets, tpool); - for(n=0 ; n <= num_listening_sockets ; n++) - apr_poll_socket_add(pollset, listening_sockets[n], APR_POLLIN); - - while (1) { - /* If we're here, then chances are (unless we're the first thread created) we're going - to be held up on the accept_muetx, so doing this here shouldn't be a peformance hit. - If it is, you probably need more threads... - */ - - this_worker_should_exit |= (ap_max_requests_per_child != 0) && (requests_this_child <= 0); - - if (this_worker_should_exit) break; - - (void) ap_update_child_status(0, child_slot, SERVER_READY, - (request_rec*)NULL); - - apr_lock_acquire(accept_mutex); - - while (!this_worker_should_exit) { - apr_int16_t event; - apr_status_t ret; - - ret = apr_poll(pollset, &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; - char *tmpbuf = apr_pcalloc(ptrans, sizeof(char) * 5); - apr_size_t len = 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_lock_release(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); - requests_this_child--; - } - } - else { - apr_lock_release(accept_mutex); - break; - } - apr_pool_clear(ptrans); - - } - - ap_update_child_status(0, child_slot, SERVER_DEAD, (request_rec*)NULL); - - apr_lock_acquire(worker_thread_count_mutex); - worker_thread_count--; - apr_lock_release(worker_thread_count_mutex); - - return (0); -} - -static int make_worker(server_rec *s, 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(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, s, - "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(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; -} - -/* 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(ap_server_conf, 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; - - /* 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(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_threads_to_start) -{ - int child_slot; - apr_wait_t status; - apr_proc_t pid; - int i; - - while (!restart_pending && !shutdown_pending) { - ap_wait_or_timeout(&status, &pid, pconf); - - if (pid.pid >= 0) { - ap_process_child_status(&pid, status); - /* 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(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(ap_server_conf, 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_NOERRNO|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_DAEMONS: - *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 = ap_threads_per_child; - 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; - - ap_scoreboard_fname = DEFAULT_SCOREBOARD; - - /* 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->sa.sin.sin_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_NOERRNO|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 - */ - if ((rv = apr_lock_create(&accept_mutex, APR_MUTEX, APR_CROSS_PROCESS, - NULL, pconf)) != 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... - */ - if ((rv = apr_lock_create(&worker_thread_count_mutex, APR_MUTEX, APR_CROSS_PROCESS, - NULL, pconf)) != 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) - ap_create_scoreboard(pconf, SB_SHARED); - - if (!is_graceful) { - 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 SIGWINCH). 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 it's own to use. - */ - apr_pool_create(&pchild, pconf); - ap_run_child_init(pchild, ap_server_conf); - - /* 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 (!is_graceful) { - 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_NOERRNO|APLOG_NOTICE, 0, ap_server_conf, - "%s configured -- resuming normal operations", - ap_get_server_version()); - - ap_log_error(APLOG_MARK, APLOG_NOERRNO|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 - */ - 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 */ - - /* close the UDP socket we've been using... */ - apr_socket_close(listening_sockets[0]); - - /* - * 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"); - - /* 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_NOERRNO|APLOG_INFO, - 0, ap_server_conf, - "removed PID file %s (pid=%ld)", - pidfile, (long)getpid()); - } - - /* use ap_reclaim_child_processes starting with SIGTERM */ - ap_reclaim_child_processes(1); - - /* record the shutdown in the log */ - ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf, - "caught SIGTERM, shutting down"); - - return 1; - } - - /* we've been told to restart */ - signal(SIGHUP, SIG_IGN); - - if (one_process) { - return 1; - } - - if (is_graceful) { - ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf, - "SIGWINCH 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_NOERRNO|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_lock_destroy(worker_thread_count_mutex); - apr_lock_destroy(accept_mutex); - - return 0; -} - -static void beos_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp) -{ - static int restart_num = 0; - int no_detach = 0; - - one_process = !!ap_exists_config_define("ONE_PROCESS"); - no_detach = !!ap_exists_config_define("NO_DETACH"); - - /* sigh, want this only the second time around */ - if (restart_num++ == 1) { - is_graceful = 0; - - if (!one_process && !no_detach) - apr_proc_detach(); - - 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_threads_per_child = DEFAULT_THREADS_PER_CHILD; - ap_pid_fname = DEFAULT_PIDLOG; - ap_scoreboard_fname = DEFAULT_SCOREBOARD; - ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD; - - apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir)); -} - -static void beos_hooks(apr_pool_t *p) -{ - one_process = 0; - - ap_hook_pre_config(beos_pre_config, NULL, NULL, APR_HOOK_MIDDLE); -} - - -static const char *set_pidfile(cmd_parms *cmd, void *dummy, const char *arg) -{ - const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); - if (err != NULL) { - return err; - } - - if (cmd->server->is_virtual) { - return "PidFile directive not allowed in <VirtualHost>"; - } - ap_pid_fname = arg; - return NULL; -} - -static const char *set_scoreboard(cmd_parms *cmd, void *dummy, const char *arg) -{ - const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); - if (err != NULL) { - return err; - } - - ap_scoreboard_fname = arg; - return NULL; -} - -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_threads_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 | APLOG_NOERRNO, 0, NULL, - "WARNING: detected MinSpareThreads set to non-positive."); - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - "Resetting to 1 to avoid almost certain Apache failure."); - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 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_server_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_SERVER_LIMIT) { - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - "WARNING: MaxClients of %d exceeds compile time limit " - "of %d servers,", ap_thread_limit, HARD_SERVER_LIMIT); - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - " lowering MaxClients to %d. To increase, please " - "see the", HARD_SERVER_LIMIT); - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - " HARD_SERVER_LIMIT define in src/include/httpd.h."); - ap_thread_limit = HARD_SERVER_LIMIT; - } - else if (ap_thread_limit < 1) { - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - "WARNING: Require MaxClients > 0, setting to 1"); - ap_thread_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 > HARD_THREAD_LIMIT) { - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - "WARNING: ThreadsPerChild of %d exceeds compile time" - "limit of %d threads,", ap_threads_per_child, - HARD_THREAD_LIMIT); - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - " lowering ThreadsPerChild to %d. To increase, please" - "see the", HARD_THREAD_LIMIT); - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - " HARD_THREAD_LIMIT define in %s", AP_MPM_HARD_LIMITS_FILE); - } - else if (ap_threads_per_child < 1) { - ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL, - "WARNING: Require ThreadsPerChild > 0, setting to 1"); - ap_threads_per_child = 1; - } - return NULL; -} - -static const char *set_max_requests(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_child = atoi(arg); - - return NULL; -} - -static const char *set_coredumpdir (cmd_parms *cmd, void *dummy, const char *arg) -{ - apr_finfo_t finfo; - const char *fname; - const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY); - if (err != NULL) { - return err; - } - - fname = ap_server_root_relative(cmd->pool, arg); - if ((apr_stat(&finfo, fname, APR_FINFO_TYPE, cmd->pool) != APR_SUCCESS) - || (finfo.filetype != APR_DIR)) { - return apr_pstrcat(cmd->pool, "CoreDumpDirectory ", fname, - " does not exist or is not a directory", NULL); - } - apr_cpystrn(ap_coredump_dir, fname, sizeof(ap_coredump_dir)); - return NULL; -} - -static const command_rec beos_cmds[] = { -LISTEN_COMMANDS -AP_INIT_TAKE1( "PidFile", set_pidfile, NULL, RSRC_CONF, - "A file for logging the server process ID"), -AP_INIT_TAKE1( "ScoreBoardFile", set_scoreboard, NULL, RSRC_CONF, - "A file for Apache to maintain runtime process management information"), -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_server_limit, 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( "MaxRequestsPerChild", set_max_requests, NULL, RSRC_CONF, - "Maximum number of requests a particular child serves before dying." ), -AP_INIT_TAKE1( "CoreDumpDirectory", set_coredumpdir, NULL, RSRC_CONF, - "The location of the directory Apache changes to before dumping core" ), -{ 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 */ -}; - |