5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder

79e28be65fd0bc65adf266d5ae4f6deb92546bf7Christian Maeder

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder#define CORE_PRIVATE

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "apr_strings.h"

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder#include "apr_portable.h"

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder#include "httpd.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "http_main.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "http_log.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "http_config.h" /* for read_config */

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "http_core.h" /* for get_remote_host */

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "http_connection.h"

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder#include "ap_mpm.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "beosd.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "ap_listen.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "scoreboard.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "poll.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "mpm_common.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include "mpm.h"

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder#include <unistd.h>

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederint ap_threads_per_child=0; /* Worker threads per child */

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederint ap_max_requests_per_child=0;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederstatic char *ap_pid_fname=NULL;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederstatic char *ap_scoreboard_fname=NULL;

79e28be65fd0bc65adf266d5ae4f6deb92546bf7Christian Maederstatic int ap_daemons_to_start=0;

79e28be65fd0bc65adf266d5ae4f6deb92546bf7Christian Maederstatic int min_spare_threads=0;

79e28be65fd0bc65adf266d5ae4f6deb92546bf7Christian Maederstatic int max_spare_threads=0;

79e28be65fd0bc65adf266d5ae4f6deb92546bf7Christian Maederstatic int ap_daemons_limit=0;

79e28be65fd0bc65adf266d5ae4f6deb92546bf7Christian Maederstatic time_t ap_restart_time=0;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian MaederAP_DECLARE_DATA int ap_extended_status = 0;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederstatic int workers_may_exit = 0;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederstatic int requests_this_child;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederstatic int num_listenfds = 0;

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maederstatic struct pollfd *listenfds;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederapr_lock_t *accept_mutex = NULL;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederstatic apr_pool_t *pconf; /* Pool for config stuff */

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederstatic apr_pool_t *pchild; /* Pool for httpd child stuff */

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederstatic int my_pid; /* Linux getpid() doesn't work except in main thread. Use

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederstatic int worker_thread_count;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederapr_lock_t *worker_thread_count_mutex;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maedertypedef struct {

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder int pid;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder thread_id tid;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder int sd;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder apr_pool_t *tpool; /* "pthread" would be confusing */

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder} proc_info;

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maederstruct ap_ctable ap_child_table[HARD_SERVER_LIMIT];

5b55761e0df088c5b41183fb83106bfd02a61fa2Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederint ap_max_daemons_limit = -1;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederchar ap_coredump_dir[MAX_STRING_LEN];

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederport_id port_of_death;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederserver_rec *ap_server_conf;

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maeder

89026e63176e6e40c7be1bbc542326f0d29d8108Christian Maederstatic int one_process = 0;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder#ifdef DEBUG_SIGSTOP

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederint raise_sigstop_flags;

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder#endif

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian MaederAP_DECLARE(int) ap_get_max_daemons(void)

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder{

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder return ap_max_daemons_limit;

8ab0f7627987d45eb3fe36845a91694977ca5cdbChristian Maeder}

8ab0f7627987d45eb3fe36845a91694977ca5cdbChristian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maedervoid clean_child_exit(int code)

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder{

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder if (pchild) {

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder apr_destroy_pool(pchild);

4620e43bc9fa96506bd78ed6b3e5318b08de5996Christian Maeder }

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder exit(code);

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder}

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maederstatic void sig_coredump(int sig)

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder{

57dc8a87418e235e3d0621fb90728054044a9ef9Christian Maeder 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

}

static void just_die(int sig)

{

clean_child_exit(0);

}

static int volatile shutdown_pending;

static int volatile restart_pending;

static int volatile is_graceful;

static void ap_start_shutdown(void)

{

if (shutdown_pending == 1) {

/* Um, is this _probably_ not an error, if the user has

return;

}

shutdown_pending = 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)");

}

#define sock_disable_nagle(s) /* NOOP */

int ap_graceful_stop_signalled(void)

{

/* XXX - Does this really work? - Manoj */

return is_graceful;

}

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);

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_create_pool(&ptrans, tpool);

apr_lock(worker_thread_count_mutex);

worker_thread_count++;

apr_unlock(worker_thread_count_mutex);

/* TODO: Switch to a system where threads reuse the results from earlier

while (!workers_may_exit) {

workers_may_exit |= (ap_max_requests_per_child != 0) && (requests_this_child <= 0);

if (workers_may_exit) break;

apr_lock(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

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_put_os_sock(&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_unlock(accept_mutex);

process_socket(ptrans, csd, process_slot,

thread_slot);

requests_this_child--;

}

else {

apr_unlock(accept_mutex);

break;

}

apr_clear_pool(ptrans);

}

apr_destroy_pool(tpool);

apr_lock(worker_thread_count_mutex);

worker_thread_count--;

if (worker_thread_count == 0) {

/* All the threads have exited, now finish the shutdown process

kill(my_pid, SIGTERM);

}

apr_unlock(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_create_pool(&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_get_os_sock(&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_create_lock(&worker_thread_count_mutex, APR_MUTEX,

APR_CROSS_PROCESS, NULL, pchild)) != APR_SUCCESS) {

/* Oh dear, didn't manage to create a worker thread mutex,

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_create_pool(&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

sleep(10);

clean_child_exit(APEXIT_CHILDFATAL);

}

resume_thread(thread);

/* We let each thread update it's own scoreboard entry. This is done

}

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, time_t now)

{

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

sleep(10);

return -1;

}

resume_thread(tid);

ap_child_table[slot].pid = getpid();

ap_child_table[slot].status = SERVER_ALIVE;

return 0;

}

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) < 0) {

break;

}

--number_to_start;

}

}

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;

time_t now = 0;

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], now);

}

/* the next time around we want to spawn twice as many if this

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

make_child(ap_server_conf, child_slot, time(NULL));

--remaining_children_to_start;

}

#if APR_HAS_OTHER_CHILD

}

else if (apr_reap_other_child(&pid, status) == 0) {

/* handled */

#endif

}

else if (is_graceful) {

/* Great, we've probably just lost a slot in the

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,

continue;

}

else if (remaining_children_to_start) {

/* we hit a 1 second timeout in which none of the previous

startup_children(remaining_children_to_start);

remaining_children_to_start = 0;

/* In any event we really shouldn't do the code below because

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_create_lock(&accept_mutex, APR_MUTEX, APR_CROSS_PROCESS,

NULL, pconf)) != APR_SUCCESS) {

/* tsch tsch, can't have more than one thread in the accept loop

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,

"Couldn't create accept lock");

return 1;

}

if (!is_graceful) {

reinit_scoreboard(pconf);

}

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

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

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:

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

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");

}

if (!is_graceful) {

ap_restart_time = time(NULL);

}

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)

{

INIT_SIGLIST()

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_NORM, 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[] = {

{ "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 */

};