+++ /dev/null
-/* ====================================================================
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2000 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.
- */
-
-/* This module is effectivly mpmt_pthread much modified to
- * allow it work on BeOS. It's stable and works OK.
- */
-
-#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 "poll.h"
-#include "mpm_common.h"
-#include "mpm.h"
-#include <unistd.h>
-
-/*
- * Actual definitions of config globals
- */
-
-int ap_threads_per_child=0; /* Worker threads per child */
-int ap_max_requests_per_child=0;
-static char *ap_pid_fname=NULL;
-static char *ap_scoreboard_fname=NULL;
-static int ap_daemons_to_start=0;
-static int min_spare_threads=0;
-static int max_spare_threads=0;
-static int ap_daemons_limit=0;
-AP_DECLARE_DATA int ap_extended_status = 0;
-static int workers_may_exit = 0;
-static int requests_this_child;
-static int num_listenfds = 0;
-static struct pollfd *listenfds;
-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 my_pid; /* Linux getpid() doesn't work except in main thread. Use
- this instead */
-
-/* Keep track of the number of worker threads currently active */
-static int worker_thread_count;
-apr_lock_t *worker_thread_count_mutex;
-
-/* The structure used to pass unique initialization info to each thread */
-typedef struct {
- int pid;
- thread_id tid;
- int sd;
- apr_pool_t *tpool; /* "pthread" would be confusing */
-} proc_info;
-
-struct ap_ctable ap_child_table[HARD_SERVER_LIMIT];
-
-/*
- * 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_daemons_limit = -1;
-char ap_coredump_dir[MAX_STRING_LEN];
-port_id port_of_death;
-
-/* shared http_main globals... */
-
-server_rec *ap_server_conf;
-
-/* one_process */
-/* TODO - get this working again... */
-static int one_process = 0;
-
-#ifdef DEBUG_SIGSTOP
-int raise_sigstop_flags;
-#endif
-
-AP_DECLARE(int) ap_get_max_daemons(void)
-{
- return ap_max_daemons_limit;
-}
-
-/* a clean exit from a child with proper cleanup
- static void clean_child_exit(int code) __attribute__ ((noreturn)); */
-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(my_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.
- */
-}
-
-static void just_die(int sig)
-{
- clean_child_exit(0);
-}
-
-/*****************************************************************
- * Connection structures and accounting...
- */
-
-/* volatile just in case */
-static int volatile shutdown_pending;
-static int volatile restart_pending;
-static int volatile is_graceful;
-
-/*
- * 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 */
-void ap_start_restart(int graceful)
-{
-
- if (restart_pending == 1) {
- /* Probably not an error - don't bother reporting it */
- return;
- }
- restart_pending = 1;
- is_graceful = graceful;
-}
-
-static void sig_term(int sig)
-{
- ap_start_shutdown();
-}
-
-static void restart(int sig)
-{
- ap_start_restart(sig == SIGWINCH);
-}
-
-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...
- */
-
-#define sock_disable_nagle(s) /* NOOP */
-
-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, int my_thread_num)
-{
- conn_rec *current_conn;
- long conn_id = my_child_num * HARD_THREAD_LIMIT + my_thread_num;
- int csd;
-
- 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 process_slot = ti->pid;
- int thread_slot = ti->tid;
- 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;
- int srv;
- int curr_pollfd, last_pollfd = 0;
- sigset_t sig_mask;
-
- free(ti);
-
- /* block the signals for this thread */
- sigfillset(&sig_mask);
- sigprocmask(SIG_BLOCK, &sig_mask, NULL);
-
- apr_pool_create(&ptrans, tpool);
-
- apr_lock_aquire(worker_thread_count_mutex);
- worker_thread_count++;
- apr_lock_release(worker_thread_count_mutex);
-
- /* TODO: Switch to a system where threads reuse the results from earlier
- poll calls - manoj */
- while (!workers_may_exit) {
- workers_may_exit |= (ap_max_requests_per_child != 0) && (requests_this_child <= 0);
- if (workers_may_exit) break;
-
- apr_lock_aquire(accept_mutex);
- while (!workers_may_exit) {
- srv = poll(listenfds, num_listenfds + 1, -1);
- if (srv < 0) {
- if (errno == EINTR) {
- continue;
- }
-
- /* poll() will only return errors in catastrophic
- * circumstances. Let's try exiting gracefully, for now. */
- ap_log_error(APLOG_MARK, APLOG_ERR,errno, (const server_rec *)
- ap_server_conf, "poll: (listen)");
- workers_may_exit = 1;
- }
-
- if (workers_may_exit) break;
-
- if (num_listenfds == 1) {
- sd = ap_listeners->sd;
- goto got_fd;
- }
- else {
- /* find a listener */
- curr_pollfd = last_pollfd;
- do {
- curr_pollfd++;
- if (curr_pollfd > num_listenfds) {
- curr_pollfd = 1;
- }
- /* XXX: Should we check for POLLERR? */
- if (listenfds[curr_pollfd].revents & POLLIN) {
- last_pollfd = curr_pollfd;
- apr_os_sock_put(&sd, &listenfds[curr_pollfd].fd, tpool);
- goto got_fd;
- }
- } while (curr_pollfd != last_pollfd);
- }
- }
- got_fd:
- if (!workers_may_exit) {
- apr_accept(&csd, sd, ptrans);
- apr_lock_release(accept_mutex);
- process_socket(ptrans, csd, process_slot,
- thread_slot);
- requests_this_child--;
- }
- else {
- apr_lock_release(accept_mutex);
- break;
- }
- apr_clear_pool(ptrans);
- }
-
- apr_pool_destroy(tpool);
- apr_lock_aquire(worker_thread_count_mutex);
- worker_thread_count--;
- if (worker_thread_count == 0) {
- /* All the threads have exited, now finish the shutdown process
- * by signalling the sigwait thread */
- kill(my_pid, SIGTERM);
- }
- apr_lock_release(worker_thread_count_mutex);
-
- return (0);
-}
-
-
-static int32 child_main(void * data)
-{
- int child_num_arg = (int) data;
- sigset_t sig_mask;
- thread_id thread;
- int i;
- int my_child_num = child_num_arg;
- ap_listen_rec *lr;
- struct sigaction sa;
- int32 msg;
- char buf;
- apr_status_t rv;
-
- my_pid = getpid();
- apr_pool_create(&pchild, pconf);
-
- if (beosd_setup_child()) {
- clean_child_exit(APEXIT_CHILDFATAL);
- }
-
- ap_child_init_hook(pchild, ap_server_conf);
-
- /*done with init critical section */
-
- /* All threads should mask signals out, accoring to sigwait(2) man page */
- sigfillset(&sig_mask);
- sigprocmask(SIG_BLOCK, &sig_mask, NULL);
-
- requests_this_child = ap_max_requests_per_child;
-
- /* Set up the pollfd array */
- listenfds = apr_palloc(pchild, sizeof(struct pollfd) * (num_listenfds));
- for (lr = ap_listeners, i = 0; i < num_listenfds; lr = lr->next, ++i) {
- apr_os_sock_get(&listenfds[i].fd , lr->sd);
- listenfds[i].events = POLLIN; /* should we add POLLPRI ?*/
- listenfds[i].revents = 0;
- }
-
- /* Setup worker threads */
-
- worker_thread_count = 0;
- if ((rv = apr_lock_create(&worker_thread_count_mutex, APR_MUTEX,
- APR_CROSS_PROCESS, NULL, pchild)) != APR_SUCCESS) {
- /* Oh dear, didn't manage to create a worker thread mutex,
- so there's no point on going on with this child... */
- return (0);
- }
-
- for (i=0; i < ap_threads_per_child; i++) {
- proc_info *my_info = (proc_info *)malloc(sizeof(proc_info));
- if (my_info == NULL) {
- ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
- "malloc: out of memory");
- clean_child_exit(APEXIT_CHILDFATAL);
- }
- my_info->pid = my_child_num;
- my_info->tid = i;
- my_info->sd = 0;
- apr_pool_create(&my_info->tpool, pchild);
-
- /* We are creating threads right now */
- if ((thread = spawn_thread(worker_thread, "httpd_worker_thread",
- B_NORMAL_PRIORITY, my_info)) < B_NO_ERROR) {
- ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,
- "spawn_thread: unable to create worker thread");
- /* In case system resources are maxxed out, we don't want
- Apache running away with the CPU trying to fork over and
- over and over again if we exit. */
- sleep(10);
- clean_child_exit(APEXIT_CHILDFATAL);
- }
- resume_thread(thread);
- /* We let each thread update it's own scoreboard entry. This is done
- * because it let's us deal with tid better.
- */
- }
-
- sigemptyset(&sa.sa_mask);
- sa.sa_flags = 0;
- sa.sa_handler = just_die;
- sigaction(SIGTERM, &sa, NULL);
- sigaction(SIGINT, &sa, NULL);
- /* this blocks until it gets a message... */
- read_port(port_of_death, &msg, &buf, 1);
-
- return (0);
-}
-
-static int make_child(server_rec *s, int slot)
-{
- thread_id tid;
-
- if (slot + 1 > ap_max_daemons_limit) {
- ap_max_daemons_limit = slot + 1;
- }
-
- if (one_process) {
- set_signals();
- ap_child_table[slot].pid = getpid();
- ap_child_table[slot].status = SERVER_ALIVE;
- }
-
- tid = spawn_thread(child_main, "httpd_child", B_NORMAL_PRIORITY,
- (void*)slot);
- if (tid < B_NO_ERROR) {
- ap_log_error(APLOG_MARK, APLOG_ERR, errno, s,
- "spawn_thread: Unable to fork new process");
- /* In case system resources are maxxed out, we don't want
- Apache running away with the CPU trying to fork over and
- over and over again. */
- sleep(10);
-
- return -1;
- }
- resume_thread(tid);
-
- ap_child_table[slot].pid = getpid();
- ap_child_table[slot].status = SERVER_ALIVE;
- return 0;
-}
-
-/* start up a bunch of children */
-static void startup_children(int number_to_start)
-{
- int i;
-
- for (i = 0; number_to_start && i < ap_daemons_limit; ++i) {
- if (ap_child_table[i].pid) {
- continue;
- }
- if (make_child(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_daemons_limit; ++i) {
- if (ap_child_table[i].pid == 0) {
- if (free_length < spawn_rate) {
- free_slots[free_length] = i;
- ++free_length;
- }
- }
- else {
- last_non_dead = i;
- }
-
- if (i >= ap_max_daemons_limit && free_length >= spawn_rate) {
- break;
- }
- }
- ap_max_daemons_limit = last_non_dead + 1;
-
- if (free_length > 0) {
- for (i = 0; i < free_length; ++i) {
- make_child(ap_server_conf, free_slots[i]);
- }
- /* the next time around we want to spawn twice as many if this
- * wasn't good enough, but not if we've just done a graceful
- */
- if (hold_off_on_exponential_spawning) {
- --hold_off_on_exponential_spawning;
- } else if (spawn_rate < MAX_SPAWN_RATE) {
- spawn_rate *= 2;
- }
- } else {
- spawn_rate = 1;
- }
-}
-
-static void server_main_loop(int remaining_children_to_start)
-{
- int child_slot;
- apr_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_daemons_limit; ++i) {
- if (ap_child_table[i].pid == pid.pid) {
- int j;
-
- child_slot = i;
- for (j = 0; j < HARD_THREAD_LIMIT; j++) {
- ap_mpmt_beos_force_reset_connection_status(i * HARD_THREAD_LIMIT + j);
- }
- break;
- }
- }
- if (child_slot >= 0) {
- ap_child_table[child_slot].pid = 0;
-
- if (remaining_children_to_start
- && child_slot < ap_daemons_limit) {
- /* we're still doing a 1-for-1 replacement of dead
- * children with new children
- */
- make_child(ap_server_conf, child_slot);
- --remaining_children_to_start;
- }
-#if APR_HAS_OTHER_CHILD
- }
- else if (apr_proc_other_child_read(&pid, status) == 0) {
- /* handled */
-#endif
- }
- else if (is_graceful) {
- /* Great, we've probably just lost a slot in the
- * scoreboard. Somehow we don't know about this
- * child.
- */
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, errno, 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_children_to_start) {
- /* we hit a 1 second timeout in which none of the previous
- * generation of children needed to be reaped... so assume
- * they're all done, and pick up the slack if any is left.
- */
- startup_children(remaining_children_to_start);
- remaining_children_to_start = 0;
- /* In any event we really shouldn't do the code below because
- * few of the servers we just started are in the IDLE state
- * yet, so we'd mistakenly create an extra server.
- */
- continue;
- }
-
- perform_idle_server_maintenance();
- }
-}
-
-int ap_mpm_run(apr_pool_t *_pconf, apr_pool_t *plog, server_rec *s)
-{
- int remaining_children_to_start;
- apr_status_t rv;
-
- pconf = _pconf;
- ap_server_conf = s;
- port_of_death = create_port(1, "httpd_port_of_death");
-
- if ((num_listenfds = ap_setup_listeners(ap_server_conf)) < 1) {
- /* XXX: hey, what's the right way for the mpm to indicate a fatal error? */
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_ALERT, errno, s,
- "no listening sockets available, shutting down");
- return 1;
- }
- ap_log_pid(pconf, ap_pid_fname);
-
- /* create the accept_mutex */
- 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;
- }
-
- if (!is_graceful) {
- ap_create_scoreboard(pconf, SB_SHARED);
- }
-
- set_signals();
- /* Don't thrash... */
- if (max_spare_threads < min_spare_threads + ap_threads_per_child)
- max_spare_threads = min_spare_threads + ap_threads_per_child;
-
- /* If we're doing a graceful_restart then we're going to see a lot
- * of children exiting immediately when we get into the main loop
- * below (because we just sent them SIGWINCH). This happens pretty
- * rapidly... and for each one that exits we'll start a new one until
- * we reach at least daemons_min_free. But we may be permitted to
- * start more than that, so we'll just keep track of how many we're
- * supposed to start up without the 1 second penalty between each fork.
- */
- remaining_children_to_start = ap_daemons_to_start;
- if (remaining_children_to_start > ap_daemons_limit) {
- remaining_children_to_start = ap_daemons_limit;
- }
- if (!is_graceful) {
- startup_children(remaining_children_to_start);
- remaining_children_to_start = 0;
- }
- else {
- /* give the system some time to recover before kicking into
- * exponential mode */
- hold_off_on_exponential_spawning = 10;
- }
-
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, errno, ap_server_conf,
- "%s configured -- resuming normal operations",
- ap_get_server_version());
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, errno, ap_server_conf,
- "Server built: %s", ap_get_server_built());
- restart_pending = shutdown_pending = 0;
-
- server_main_loop(remaining_children_to_start);
-
- if (shutdown_pending) {
- /* Time to gracefully shut down:
- * Kill child processes, tell them to call child_exit, etc...
- */
- if (beosd_killpg(getpgrp(), SIGTERM) < 0) {
- ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
- "killpg SIGTERM");
- }
- ap_reclaim_child_processes(1); /* Start with SIGTERM */
-
- /* cleanup pid file on normal shutdown */
- {
- const char *pidfile = NULL;
- pidfile = ap_server_root_relative (pconf, ap_pid_fname);
- if ( pidfile != NULL && unlink(pidfile) == 0)
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO,
- errno, ap_server_conf,
- "removed PID file %s (pid=%ld)",
- pidfile, (long)getpid());
- }
-
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, errno, ap_server_conf,
- "caught SIGTERM, shutting down");
-
- return 1;
- }
-
- /* we've been told to restart */
- signal(SIGHUP, SIG_IGN);
-
- if (one_process) {
- /* not worth thinking about */
- return 1;
- }
-
- if (is_graceful) {
- int i;
- char char_of_death = '!';
-
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, errno, ap_server_conf,
- "SIGWINCH received. Doing graceful restart");
-
- /* give the children the signal to die */
- for (i = 0; i < ap_daemons_limit;) {
- if(ap_child_table[i].pid) {
- if (write_port(port_of_death, 99, &char_of_death, 1) != B_OK) {
- if (errno == EINTR) continue;
- ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
- "write port_of_death");
- }
- }
- i++;
- }
-
- }
- else {
- /* Kill 'em all. Since the child acts the same on the parents SIGTERM
- * and a SIGHUP, we may as well use the same signal, because some user
- * pthreads are stealing signals from us left and right.
- */
- if (beosd_killpg(getpgrp(), SIGTERM) < 0) {
- ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf,
- "killpg SIGTERM");
- }
- ap_reclaim_child_processes(1); /* Start with SIGTERM */
- ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, errno, ap_server_conf,
- "SIGHUP received. Attempting to restart");
- }
- delete_port(port_of_death);
- return 0;
-}
-
-static void mpmt_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) {
- beosd_detach();
- }
-
- my_pid = getpid();
- }
-
- beosd_pre_config();
- ap_listen_pre_config();
- ap_daemons_to_start = DEFAULT_START_DAEMON;
- min_spare_threads = DEFAULT_MIN_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
- max_spare_threads = DEFAULT_MAX_FREE_DAEMON * DEFAULT_THREADS_PER_CHILD;
- ap_daemons_limit = HARD_SERVER_LIMIT;
- ap_threads_per_child = DEFAULT_THREADS_PER_CHILD;
- ap_pid_fname = DEFAULT_PIDLOG;
- ap_max_requests_per_child = DEFAULT_MAX_REQUESTS_PER_CHILD;
- ap_mpmt_beos_set_maintain_connection_status(1);
-
- apr_cpystrn(ap_coredump_dir, ap_server_root, sizeof(ap_coredump_dir));
-}
-
-static void mpmt_beos_hooks(apr_pool_t *p)
-{
- one_process = 0;
-
- ap_hook_pre_config(mpmt_beos_pre_config, NULL, NULL, APR_HOOK_MIDDLE);
-}
-
-
-static const char *set_pidfile(cmd_parms *cmd, void *dummy, 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, 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, char *arg)
-{
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
- if (err != NULL) {
- return err;
- }
-
- ap_daemons_to_start = atoi(arg);
- return NULL;
-}
-
-static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy, 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, 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, char *arg)
-{
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
- if (err != NULL) {
- return err;
- }
-
- ap_daemons_limit = atoi(arg);
- if (ap_daemons_limit > 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_daemons_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 %s.",
- AP_MPM_HARD_LIMITS_FILE);
- ap_daemons_limit = HARD_SERVER_LIMIT;
- }
- else if (ap_daemons_limit < 1) {
- ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
- "WARNING: Require MaxClients > 0, setting to 1");
- ap_daemons_limit = 1;
- }
- return NULL;
-}
-
-static const char *set_threads_per_child (cmd_parms *cmd, void *dummy, 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, 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_maintain_connection_status(cmd_parms *cmd,
- core_dir_config *d, int arg)
-{
- const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
- if (err != NULL) {
- return err;
- }
-
- ap_mpmt_beos_set_maintain_connection_status(arg != 0);
- return NULL;
-}
-
-static const char *set_coredumpdir (cmd_parms *cmd, void *dummy, 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 mpmt_beos_cmds[] = {
-UNIX_DAEMON_COMMANDS
-LISTEN_COMMANDS
-{ "PidFile", set_pidfile, NULL, RSRC_CONF, TAKE1,
- "A file for logging the server process ID"},
-{ "ScoreBoardFile", set_scoreboard, NULL, RSRC_CONF, TAKE1,
- "A file for Apache to maintain runtime process management information"},
-{ "StartServers", set_daemons_to_start, NULL, RSRC_CONF, TAKE1,
- "Number of child processes launched at server startup" },
-{ "MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF, TAKE1,
- "Minimum number of idle children, to handle request spikes" },
-{ "MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF, TAKE1,
- "Maximum number of idle children" },
-{ "MaxClients", set_server_limit, NULL, RSRC_CONF, TAKE1,
- "Maximum number of children alive at the same time" },
-{ "ThreadsPerChild", set_threads_per_child, NULL, RSRC_CONF, TAKE1,
- "Number of threads each child creates" },
-{ "MaxRequestsPerChild", set_max_requests, NULL, RSRC_CONF, TAKE1,
- "Maximum number of requests a particular child serves before dying." },
-{ "ConnectionStatus", set_maintain_connection_status, NULL, RSRC_CONF, FLAG,
- "Whether or not to maintain status information on current connections"},
-{ "CoreDumpDirectory", set_coredumpdir, NULL, RSRC_CONF, TAKE1,
- "The location of the directory Apache changes to before dumping core" },
-{ NULL }
-};
-
-module AP_MODULE_DECLARE_DATA mpm_mpmt_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 */
- mpmt_beos_cmds, /* command apr_table_t */
- NULL, /* handlers */
- mpmt_beos_hooks /* register_hooks */
-};
-
projects / apache / commitdiff