e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun#define CORE_PRIVATE

91f378b5a10f2d83820902ed10ba7967a3920c18nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "apr_strings.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "apr_portable.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "httpd.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "http_main.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "http_log.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "http_config.h" /* for read_config */

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "http_core.h" /* for get_remote_host */

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "http_connection.h"

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun#include "ap_mpm.h"

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun#include "beosd.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "ap_listen.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "scoreboard.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include <kernel/OS.h>

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "mpm_common.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "mpm.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include "mpm_default.h"

e609c337f729875bc20e01096c7e610f45356f54nilgun#include <unistd.h>

e609c337f729875bc20e01096c7e610f45356f54nilgun#include <sys/socket.h>

e609c337f729875bc20e01096c7e610f45356f54nilgun#include <signal.h>

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunextern int _kset_fd_limit_(int num);

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun#define HARD_SERVER_LIMIT 1

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun#ifdef NO_THREADS

e609c337f729875bc20e01096c7e610f45356f54nilgun#define HARD_THREAD_LIMIT 1

e609c337f729875bc20e01096c7e610f45356f54nilgun#endif

e609c337f729875bc20e01096c7e610f45356f54nilgun#ifndef HARD_THREAD_LIMIT

e609c337f729875bc20e01096c7e610f45356f54nilgun#define HARD_THREAD_LIMIT 50

e609c337f729875bc20e01096c7e610f45356f54nilgun#endif

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int ap_threads_to_start=0;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int ap_max_requests_per_thread = 0;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int min_spare_threads=0;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int max_spare_threads=0;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int ap_thread_limit=0;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int num_listening_sockets = 0;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic apr_socket_t ** listening_sockets;

e609c337f729875bc20e01096c7e610f45356f54nilgunapr_lock_t *accept_mutex = NULL;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic apr_pool_t *pconf; /* Pool for config stuff */

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic apr_pool_t *pchild; /* Pool for httpd child stuff */

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int server_pid;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int worker_thread_count;

e609c337f729875bc20e01096c7e610f45356f54nilgunapr_lock_t *worker_thread_count_mutex;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilguntypedef struct {

e609c337f729875bc20e01096c7e610f45356f54nilgun int slot;

e609c337f729875bc20e01096c7e610f45356f54nilgun apr_pool_t *tpool;

e609c337f729875bc20e01096c7e610f45356f54nilgun} proc_info;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic void check_restart(void *data);

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunint ap_max_child_assigned = -1;

e609c337f729875bc20e01096c7e610f45356f54nilgunint ap_max_threads_limit = -1;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic apr_socket_t *udp_sock;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic apr_sockaddr_t *udp_sa;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunserver_rec *ap_server_conf;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int one_process = 0;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun#ifdef DEBUG_SIGSTOP

e609c337f729875bc20e01096c7e610f45356f54nilgunint raise_sigstop_flags;

e609c337f729875bc20e01096c7e610f45356f54nilgun#endif

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic void clean_child_exit(int code)

e609c337f729875bc20e01096c7e610f45356f54nilgun{

e609c337f729875bc20e01096c7e610f45356f54nilgun if (pchild)

e609c337f729875bc20e01096c7e610f45356f54nilgun apr_pool_destroy(pchild);

e609c337f729875bc20e01096c7e610f45356f54nilgun exit(code);

e609c337f729875bc20e01096c7e610f45356f54nilgun}

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic void sig_coredump(int sig)

e609c337f729875bc20e01096c7e610f45356f54nilgun{

e609c337f729875bc20e01096c7e610f45356f54nilgun chdir(ap_coredump_dir);

e609c337f729875bc20e01096c7e610f45356f54nilgun signal(sig, SIG_DFL);

e609c337f729875bc20e01096c7e610f45356f54nilgun kill(server_pid, sig);

e609c337f729875bc20e01096c7e610f45356f54nilgun /* At this point we've got sig blocked, because we're still inside

e609c337f729875bc20e01096c7e610f45356f54nilgun}

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

91f378b5a10f2d83820902ed10ba7967a3920c18nilgunstatic int volatile shutdown_pending;

91f378b5a10f2d83820902ed10ba7967a3920c18nilgunstatic int volatile restart_pending;

91f378b5a10f2d83820902ed10ba7967a3920c18nilgunstatic int volatile is_graceful;

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic int volatile child_fatal;

e609c337f729875bc20e01096c7e610f45356f54nilgunap_generation_t volatile ap_my_generation = 0;

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic void ap_start_shutdown(void)

e609c337f729875bc20e01096c7e610f45356f54nilgun{

e609c337f729875bc20e01096c7e610f45356f54nilgun if (shutdown_pending == 1) {

e609c337f729875bc20e01096c7e610f45356f54nilgun /* Um, is this _probably_ not an error, if the user has

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun return;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun }

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun shutdown_pending = 1;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun}

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgunstatic void ap_start_restart(int graceful)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun{

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (restart_pending == 1) {

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun /* Probably not an error - don't bother reporting it */

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun return;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun }

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun restart_pending = 1;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun is_graceful = graceful;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (is_graceful){

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun apr_pool_cleanup_kill(pconf, NULL, ap_cleanup_scoreboard);

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun }

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun}

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgunstatic void sig_term(int sig)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun{

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_start_shutdown();

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun}

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgunstatic void restart(int sig)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun{

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_start_restart(sig == AP_SIG_GRACEFUL);

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun}

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgunstatic void tell_workers_to_exit(void)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun{

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun apr_size_t len;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun int i = 0;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun for (i = 0 ; i < ap_max_child_assigned; i++){

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun len = 4;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (apr_sendto(udp_sock, udp_sa, 0, "die!", &len) != APR_SUCCESS)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun break;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun }

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun}

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgunstatic void set_signals(void)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun{

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun struct sigaction sa;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sigemptyset(&sa.sa_mask);

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sa.sa_flags = 0;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (!one_process) {

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sa.sa_handler = sig_coredump;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGSEGV, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGSEGV)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGBUS, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGBUS)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGABRT, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGABRT)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGILL, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGILL)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sa.sa_flags = 0;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun }

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sa.sa_handler = sig_term;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGTERM, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGTERM)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGINT, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGINT)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sa.sa_handler = SIG_IGN;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGPIPE, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGPIPE)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun /* we want to ignore HUPs and AP_SIG_GRACEFUL while we're busy

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sigaddset(&sa.sa_mask, SIGHUP);

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sigaddset(&sa.sa_mask, AP_SIG_GRACEFUL);

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun sa.sa_handler = restart;

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(SIGHUP, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(SIGHUP)");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun if (sigaction(AP_SIG_GRACEFUL, &sa, NULL) < 0)

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun ap_log_error(APLOG_MARK, APLOG_WARNING, errno, ap_server_conf, "sigaction(" AP_SIG_GRACEFUL_STRING ")");

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun}

b9bf3918f6eaf7747bcbfbd02792bcbe4a052784nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunint ap_graceful_stop_signalled(void)

e609c337f729875bc20e01096c7e610f45356f54nilgun{

e609c337f729875bc20e01096c7e610f45356f54nilgun /* XXX - Does this really work? - Manoj */

e609c337f729875bc20e01096c7e610f45356f54nilgun return is_graceful;

e609c337f729875bc20e01096c7e610f45356f54nilgun}

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgun

e609c337f729875bc20e01096c7e610f45356f54nilgunstatic void process_socket(apr_pool_t *p, apr_socket_t *sock, int my_child_num)

e609c337f729875bc20e01096c7e610f45356f54nilgun{

e609c337f729875bc20e01096c7e610f45356f54nilgun conn_rec *current_conn;

e609c337f729875bc20e01096c7e610f45356f54nilgun long conn_id = my_child_num;

e609c337f729875bc20e01096c7e610f45356f54nilgun int csd;

e609c337f729875bc20e01096c7e610f45356f54nilgun ap_sb_handle_t *sbh;

e609c337f729875bc20e01096c7e610f45356f54nilgun

f086b4b402fa9a2fefc7dda85de2a3cc1cd0a654rjung (void)apr_os_sock_get(&csd, sock);

727872d18412fc021f03969b8641810d8896820bhumbedooh

0d0ba3a410038e179b695446bb149cce6264e0abnd if (csd >= FD_SETSIZE) {

727872d18412fc021f03969b8641810d8896820bhumbedooh ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_WARNING, 0, NULL,

cc7e1025de9ac63bd4db6fe7f71c158b2cf09fe4humbedooh "filedescriptor (%u) larger than FD_SETSIZE (%u) "

0d0ba3a410038e179b695446bb149cce6264e0abnd "found, you probably need to rebuild Apache with a "

cc7e1025de9ac63bd4db6fe7f71c158b2cf09fe4humbedooh "larger FD_SETSIZE", csd, FD_SETSIZE);

727872d18412fc021f03969b8641810d8896820bhumbedooh apr_socket_close(sock);

0d0ba3a410038e179b695446bb149cce6264e0abnd return;

0d0ba3a410038e179b695446bb149cce6264e0abnd }

0d0ba3a410038e179b695446bb149cce6264e0abnd

ac082aefa89416cbdc9a1836eaf3bed9698201c8humbedooh ap_create_sb_handle(&sbh, p, 0, my_child_num);

0d0ba3a410038e179b695446bb149cce6264e0abnd current_conn = ap_run_create_connection(p, ap_server_conf, sock, conn_id, sbh);

0d0ba3a410038e179b695446bb149cce6264e0abnd

0d0ba3a410038e179b695446bb149cce6264e0abnd if (current_conn) {

727872d18412fc021f03969b8641810d8896820bhumbedooh ap_process_connection(current_conn);

0d0ba3a410038e179b695446bb149cce6264e0abnd ap_lingering_close(current_conn);

0d0ba3a410038e179b695446bb149cce6264e0abnd }

30471a4650391f57975f60bbb6e4a90be7b284bfhumbedooh}

5effc8b39fae5cd169d17f342bfc265705840014rbowen

d229f940abfb2490dee17979e9a5ff31b7012eb5rbowenstatic int32 worker_thread(void * dummy)

0d0ba3a410038e179b695446bb149cce6264e0abnd{

7fec19672a491661b2fe4b29f685bc7f4efa64d4nd proc_info * ti = dummy;

7fec19672a491661b2fe4b29f685bc7f4efa64d4nd int child_slot = ti->slot;

7fec19672a491661b2fe4b29f685bc7f4efa64d4nd apr_pool_t *tpool = ti->tpool;

e609c337f729875bc20e01096c7e610f45356f54nilgun 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_thread;

apr_pollfd_t *pollset;

/* each worker thread is in control of its own destiny...*/

int this_worker_should_exit = 0;

free(ti);

on_exit_thread(check_restart, (void*)child_slot);

/* block the signals for this thread */

sigfillset(&sig_mask);

sigprocmask(SIG_BLOCK, &sig_mask, NULL);

apr_pool_create_ex(&ptrans, tpool, NULL, APR_POOL_FNEW_ALLOCATOR);

apr_pool_tag(ptrans, "transaction");

apr_lock_acquire(worker_thread_count_mutex);

worker_thread_count++;

apr_lock_release(worker_thread_count_mutex);

(void) ap_update_child_status_from_indexes(0, child_slot, SERVER_STARTING,

(request_rec*)NULL);

apr_poll_setup(&pollset, num_listening_sockets, 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)

this_worker_should_exit |= (ap_max_requests_per_thread != 0) && (requests_this_child <= 0);

if (this_worker_should_exit) break;

(void) ap_update_child_status_from_indexes(0, child_slot, SERVER_READY,

(request_rec*)NULL);

apr_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

ap_log_error(APLOG_MARK, APLOG_ERR, ret, (const server_rec *)

ap_server_conf, "apr_poll: (listen)");

this_worker_should_exit = 1;

} else {

/* if we've bailed in apr_poll what's the point of trying to use the data? */

apr_poll_revents_get(&event, listening_sockets[0], pollset);

if (event & APR_POLLIN){

apr_sockaddr_t *rec_sa;

apr_size_t len = 5;

char *tmpbuf = apr_palloc(ptrans, sizeof(char) * 5);

apr_sockaddr_info_get(&rec_sa, "127.0.0.1", APR_UNSPEC, 7772, 0, ptrans);

if ((ret = apr_recvfrom(rec_sa, listening_sockets[0], 0, tmpbuf, &len))

!= APR_SUCCESS){

ap_log_error(APLOG_MARK, APLOG_ERR, ret, NULL,

"error getting data from UDP!!");

}else {

/* add checking??? */

}

this_worker_should_exit = 1;

}

}

if (this_worker_should_exit) break;

if (num_listening_sockets == 1) {

sd = ap_listeners->sd;

goto got_fd;

}

else {

/* find a listener */

curr_pollfd = last_pollfd;

do {

curr_pollfd++;

if (curr_pollfd > num_listening_sockets)

curr_pollfd = 1;

/* Get the revent... */

apr_poll_revents_get(&event, listening_sockets[curr_pollfd], pollset);

if (event & APR_POLLIN) {

last_pollfd = curr_pollfd;

sd = listening_sockets[curr_pollfd];

goto got_fd;

}

} while (curr_pollfd != last_pollfd);

}

}

got_fd:

if (!this_worker_should_exit) {

rv = apr_accept(&csd, sd, ptrans);

apr_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_from_indexes(0, child_slot, SERVER_DEAD, (request_rec*)NULL);

ap_log_error(APLOG_MARK, APLOG_NOTICE | APLOG_NOERRNO, 0, NULL,

"worker_thread %ld exiting", find_thread(NULL));

apr_lock_acquire(worker_thread_count_mutex);

worker_thread_count--;

apr_lock_release(worker_thread_count_mutex);

return (0);

}

static int make_worker(int slot)

{

thread_id tid;

proc_info *my_info = (proc_info *)malloc(sizeof(proc_info)); /* freed by thread... */

if (my_info == NULL) {

ap_log_error(APLOG_MARK, APLOG_ALERT, errno, ap_server_conf,

"malloc: out of memory");

clean_child_exit(APEXIT_CHILDFATAL);

}

my_info->slot = slot;

apr_pool_create(&my_info->tpool, pchild);

if (slot + 1 > ap_max_child_assigned)

ap_max_child_assigned = slot + 1;

if (one_process) {

set_signals();

ap_scoreboard_image->parent[0].pid = getpid();

return 0;

}

(void) ap_update_child_status_from_indexes(0, slot, SERVER_STARTING, (request_rec*)NULL);

tid = spawn_thread(worker_thread, "apache_worker", B_NORMAL_PRIORITY,

my_info);

if (tid < B_NO_ERROR) {

ap_log_error(APLOG_MARK, APLOG_ERR, errno, NULL,

"spawn_thread: Unable to start a new thread");

/* In case system resources are maxxed out, we don't want

(void) ap_update_child_status_from_indexes(0, slot, SERVER_DEAD,

(request_rec*)NULL);

sleep(10);

free(my_info);

return -1;

}

resume_thread(tid);

ap_scoreboard_image->servers[0][slot].tid = tid;

return 0;

}

static void check_restart(void *data)

{

if (!restart_pending && !shutdown_pending) {

int slot = (int)data;

make_worker(slot);

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, NULL,

"spawning a new worker thread in slot %d", slot);

}

}

static void startup_threads(int number_to_start)

{

int i;

for (i = 0; number_to_start && i < ap_thread_limit; ++i) {

if (ap_scoreboard_image->servers[0][i].tid) {

continue;

}

if (make_worker(i) < 0) {

break;

}

--number_to_start;

}

}

static int spawn_rate = 1;

#ifndef MAX_SPAWN_RATE

#define MAX_SPAWN_RATE (32)

#endif

static int hold_off_on_exponential_spawning;

static void perform_idle_server_maintenance(void)

{

int i;

int free_length;

int free_slots[MAX_SPAWN_RATE];

int last_non_dead = -1;

/* initialize the free_list */

free_length = 0;

for (i = 0; i < ap_thread_limit; ++i) {

if (ap_scoreboard_image->servers[0][i].tid == 0) {

if (free_length < spawn_rate) {

free_slots[free_length] = i;

++free_length;

}

}

else {

last_non_dead = i;

}

if (i >= ap_max_child_assigned && free_length >= spawn_rate) {

break;

}

}

ap_max_child_assigned = last_non_dead + 1;

if (free_length > 0) {

for (i = 0; i < free_length; ++i) {

make_worker(free_slots[i]);

}

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

if (hold_off_on_exponential_spawning) {

--hold_off_on_exponential_spawning;

} else if (spawn_rate < MAX_SPAWN_RATE) {

spawn_rate *= 2;

}

} else {

spawn_rate = 1;

}

}

static void server_main_loop(int remaining_threads_to_start)

{

int child_slot;

apr_exit_why_e exitwhy;

int status;

apr_proc_t pid;

int i;

while (!restart_pending && !shutdown_pending) {

ap_wait_or_timeout(&exitwhy, &status, &pid, pconf);

if (pid.pid >= 0) {

if (ap_process_child_status(&pid, exitwhy, status) == APEXIT_CHILDFATAL) {

shutdown_pending = 1;

child_fatal = 1;

return;

}

/* non-fatal death... note that it's gone in the scoreboard. */

child_slot = -1;

for (i = 0; i < ap_max_child_assigned; ++i) {

if (ap_scoreboard_image->servers[0][i].tid == pid.pid) {

child_slot = i;

break;

}

}

if (child_slot >= 0) {

ap_scoreboard_image->servers[0][child_slot].tid = 0;

(void) ap_update_child_status_from_indexes(0, child_slot,

SERVER_DEAD,

(request_rec*)NULL);

if (remaining_threads_to_start

&& child_slot < ap_thread_limit) {

/* we're still doing a 1-for-1 replacement of dead

make_worker(child_slot);

--remaining_threads_to_start;

}

#if APR_HAS_OTHER_CHILD

}

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

/* handled */

#endif

}

else if (is_graceful) {

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

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,

continue;

}

else if (remaining_threads_to_start) {

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

startup_threads(remaining_threads_to_start);

remaining_threads_to_start = 0;

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

continue;

}

perform_idle_server_maintenance();

}

}

AP_DECLARE(apr_status_t) ap_mpm_query(int query_code, int *result)

{

switch(query_code){

case AP_MPMQ_MAX_DAEMON_USED:

*result = ap_max_child_assigned;

return APR_SUCCESS;

case AP_MPMQ_IS_THREADED:

*result = AP_MPMQ_DYNAMIC;

return APR_SUCCESS;

case AP_MPMQ_IS_FORKED:

*result = AP_MPMQ_NOT_SUPPORTED;

return APR_SUCCESS;

case AP_MPMQ_HARD_LIMIT_DAEMONS:

*result = HARD_SERVER_LIMIT;

return APR_SUCCESS;

case AP_MPMQ_HARD_LIMIT_THREADS:

*result = HARD_THREAD_LIMIT;

return APR_SUCCESS;

case AP_MPMQ_MAX_THREADS:

*result = HARD_THREAD_LIMIT;

return APR_SUCCESS;

case AP_MPMQ_MIN_SPARE_DAEMONS:

*result = 0;

return APR_SUCCESS;

case AP_MPMQ_MIN_SPARE_THREADS:

*result = max_spare_threads;

return APR_SUCCESS;

case AP_MPMQ_MAX_SPARE_DAEMONS:

*result = 0;

return APR_SUCCESS;

case AP_MPMQ_MAX_SPARE_THREADS:

*result = min_spare_threads;

return APR_SUCCESS;

case AP_MPMQ_MAX_REQUESTS_DAEMON:

*result = ap_max_requests_per_thread;

return APR_SUCCESS;

case AP_MPMQ_MAX_DAEMONS:

*result = HARD_SERVER_LIMIT;

return APR_SUCCESS;

}

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;

/* Increase the available pool of fd's. This code from

if( FD_SETSIZE > 128 && (i = _kset_fd_limit_( 128 )) < 0 ){

ap_log_error(APLOG_MARK, APLOG_ERR, i, s,

"could not set FD_SETSIZE (_kset_fd_limit_ failed)");

}

/* BeOS R5 doesn't support pipes on select() calls, so we use a

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);

/*

/* accept_mutex

if ((rv = apr_lock_create(&accept_mutex, APR_MUTEX, APR_CROSS_PROCESS,

APR_LOCK_DEFAULT, 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;

}

/* worker_thread_count_mutex

if ((rv = apr_lock_create(&worker_thread_count_mutex, APR_MUTEX, APR_CROSS_PROCESS,

APR_LOCK_DEFAULT, NULL, pconf)) != APR_SUCCESS) {

ap_log_error(APLOG_MARK, APLOG_EMERG, rv, s,

"Couldn't create worker thread count lock");

return 1;

}

/*

if (!is_graceful) {

/* setup the scoreboard shared memory */

ap_run_pre_mpm(pconf, SB_SHARED);

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

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

apr_pool_create(&pchild, pconf);

/* Now that we have the child pool (pchild) we can allocate

listening_sockets = apr_palloc(pchild,

sizeof(*listening_sockets) * (num_listening_sockets + 1));

listening_sockets[0] = udp_sock;

for (lr = ap_listeners, i = 1; i <= num_listening_sockets; lr = lr->next, ++i)

listening_sockets[i]=lr->sd;

/* we assume all goes OK...hmm might want to check that! */

/* if we're in one_process mode we don't want to start threads

if (!is_graceful && !one_process) {

startup_threads(remaining_threads_to_start);

remaining_threads_to_start = 0;

}

else {

/* give the system some time to recover before kicking into

hold_off_on_exponential_spawning = 10;

}

/*

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;

/*

if (!one_process) {

server_main_loop(remaining_threads_to_start);

tell_workers_to_exit(); /* if we get here we're exiting... */

sleep(1); /* give them a brief chance to exit */

} else {

proc_info *my_info = (proc_info *)malloc(sizeof(proc_info));

my_info->slot = 0;

apr_pool_create(&my_info->tpool, pchild);

worker_thread(my_info);

}

/* close the UDP socket we've been using... */

apr_socket_close(listening_sockets[0]);

if ((one_process || shutdown_pending) && !child_fatal) {

const char *pidfile = NULL;

pidfile = ap_server_root_relative (pconf, ap_pid_fname);

if ( pidfile != NULL && unlink(pidfile) == 0)

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, ap_server_conf,

"removed PID file %s (pid=%ld)", pidfile,

(long)getpid());

}

if (one_process) {

return 1;

}

/*

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");

/* use ap_reclaim_child_processes starting with SIGTERM */

ap_reclaim_child_processes(1);

if (!child_fatal) { /* already recorded */

/* record the shutdown in the log */

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,

"caught SIGTERM, shutting down");

}

return 1;

}

/* we've been told to restart */

signal(SIGHUP, SIG_IGN);

if (is_graceful) {

ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_NOTICE, 0, ap_server_conf,

AP_SIG_GRACEFUL_STRING " received. Doing graceful restart");

}

else {

/* Kill 'em all. Since the child acts the same on the parents SIGTERM

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

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, debug;

debug = ap_exists_config_define("DEBUG");

if (debug)

no_detach = one_process = 1;

else

{

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_pid_fname = DEFAULT_PIDLOG;

ap_max_requests_per_thread = DEFAULT_MAX_REQUESTS_PER_THREAD;

ap_scoreboard_fname = DEFAULT_SCOREBOARD;

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_threads_to_start(cmd_parms *cmd, void *dummy, const char *arg)

{

const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);

if (err != NULL) {

return err;

}

ap_threads_to_start = atoi(arg);

if (ap_threads_to_start < 0) {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"StartThreads set to a value less than 0, reset to 1");

ap_threads_to_start = 1;

}

return NULL;

}

static const char *set_min_spare_threads(cmd_parms *cmd, void *dummy, const char *arg)

{

const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);

if (err != NULL) {

return err;

}

min_spare_threads = atoi(arg);

if (min_spare_threads <= 0) {

ap_log_error(APLOG_MARK, APLOG_STARTUP | 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_threads_limit (cmd_parms *cmd, void *dummy, const char *arg)

{

const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);

if (err != NULL) {

return err;

}

ap_thread_limit = atoi(arg);

if (ap_thread_limit > HARD_THREAD_LIMIT) {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"WARNING: MaxClients of %d exceeds compile time limit "

"of %d servers,", ap_thread_limit, HARD_THREAD_LIMIT);

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

" lowering MaxClients 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 server/mpm/beos/mpm_default.h.");

ap_thread_limit = HARD_THREAD_LIMIT;

}

else if (ap_thread_limit < 1) {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"WARNING: Require MaxClients > 0, setting to %d", HARD_THREAD_LIMIT);

ap_thread_limit = HARD_THREAD_LIMIT;

}

return NULL;

}

static const char *set_requests_per_thread (cmd_parms *cmd, void *dummy, const char *arg)

{

const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);

if (err != NULL) {

return err;

}

ap_max_requests_per_thread = atoi(arg);

if (ap_max_requests_per_thread < 0) {

ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,

"WARNING: MaxRequestsPerThread was set below 0"

"reset to 0, but this may not be what you want.");

ap_max_requests_per_thread = 0;

}

return NULL;

}

static const command_rec beos_cmds[] = {

BEOS_DAEMON_COMMANDS,

LISTEN_COMMANDS,

AP_INIT_TAKE1( "StartThreads", set_threads_to_start, NULL, RSRC_CONF,

"Number of threads to launch at server startup"),

AP_INIT_TAKE1( "MinSpareThreads", set_min_spare_threads, NULL, RSRC_CONF,

"Minimum number of idle children, to handle request spikes"),

AP_INIT_TAKE1( "MaxSpareThreads", set_max_spare_threads, NULL, RSRC_CONF,

"Maximum number of idle children" ),

AP_INIT_TAKE1( "MaxClients", set_threads_limit, NULL, RSRC_CONF,

"Maximum number of children alive at the same time (max threads)" ),

AP_INIT_TAKE1( "RequestsPerThread", set_requests_per_thread, NULL, RSRC_CONF,

"Maximum number of requests served by a thread" ),

{ NULL }

};

module AP_MODULE_DECLARE_DATA mpm_beos_module = {

MPM20_MODULE_STUFF,

NULL, /* hook to run before apache parses args */

NULL, /* create per-directory config structure */

NULL, /* merge per-directory config structures */

NULL, /* create per-server config structure */

NULL, /* merge per-server config structures */

beos_cmds, /* command apr_table_t */

beos_hooks /* register_hooks */

};