blob: 1da491526fbe927a8245dfa3d9f64f930abaf07c [file] [log] [blame] [raw]
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
#include <ngx_channel.h>
static void ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t n,
ngx_int_t type);
static void ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo);
static ngx_uint_t ngx_reap_childs(ngx_cycle_t *cycle);
static void ngx_master_exit(ngx_cycle_t *cycle);
static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data);
static void ngx_channel_handler(ngx_event_t *ev);
#if (NGX_THREADS)
static void ngx_wakeup_worker_threads(ngx_cycle_t *cycle);
static void *ngx_worker_thread_cycle(void *data);
#endif
ngx_uint_t ngx_process;
ngx_pid_t ngx_pid;
ngx_uint_t ngx_threaded;
sig_atomic_t ngx_reap;
sig_atomic_t ngx_timer;
sig_atomic_t ngx_sigio;
sig_atomic_t ngx_terminate;
sig_atomic_t ngx_quit;
ngx_uint_t ngx_exiting;
sig_atomic_t ngx_reconfigure;
sig_atomic_t ngx_reopen;
sig_atomic_t ngx_change_binary;
ngx_pid_t ngx_new_binary;
ngx_uint_t ngx_inherited;
ngx_uint_t ngx_daemonized;
sig_atomic_t ngx_noaccept;
ngx_uint_t ngx_noaccepting;
ngx_uint_t ngx_restart;
#if (NGX_THREADS)
volatile ngx_thread_t ngx_threads[NGX_MAX_THREADS];
ngx_int_t ngx_threads_n;
#endif
u_char master_process[] = "master process";
void ngx_master_process_cycle(ngx_cycle_t *cycle)
{
char *title;
u_char *p;
size_t size;
ngx_int_t i;
sigset_t set;
struct timeval tv;
struct itimerval itv;
ngx_uint_t live;
ngx_msec_t delay;
ngx_core_conf_t *ccf;
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGIO);
sigaddset(&set, SIGINT);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_NOACCEPT_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_TERMINATE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
sigemptyset(&set);
size = sizeof(master_process);
for (i = 0; i < ngx_argc; i++) {
size += ngx_strlen(ngx_argv[i]) + 1;
}
title = ngx_palloc(cycle->pool, size);
p = ngx_cpymem(title, master_process, sizeof(master_process) - 1);
for (i = 0; i < ngx_argc; i++) {
*p++ = ' ';
p = ngx_cpystrn(p, (u_char *) ngx_argv[i], size);
}
ngx_setproctitle(title);
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_new_binary = 0;
delay = 0;
live = 1;
for ( ;; ) {
if (delay) {
delay *= 2;
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"temination cycle: %d", delay);
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = delay / 1000;
itv.it_value.tv_usec = (delay % 1000 ) * 1000;
if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setitimer() failed");
}
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend");
sigsuspend(&set);
ngx_gettimeofday(&tv);
ngx_time_update(tv.tv_sec);
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "wake up");
if (ngx_reap) {
ngx_reap = 0;
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap childs");
live = ngx_reap_childs(cycle);
}
if (!live && (ngx_terminate || ngx_quit)) {
ngx_master_exit(cycle);
}
if (ngx_terminate) {
if (delay == 0) {
delay = 50;
}
if (delay > 1000) {
ngx_signal_worker_processes(cycle, SIGKILL);
} else {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_TERMINATE_SIGNAL));
}
continue;
}
if (ngx_quit) {
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
continue;
}
if (ngx_timer) {
ngx_timer = 0;
if (!ngx_noaccepting) {
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_JUST_RESPAWN);
live = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
}
if (ngx_reconfigure) {
ngx_reconfigure = 0;
if (ngx_new_binary) {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "start new workers");
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
ngx_noaccepting = 0;
continue;
}
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reconfiguring");
cycle = ngx_init_cycle(cycle);
if (cycle == NULL) {
cycle = (ngx_cycle_t *) ngx_cycle;
continue;
}
ngx_cycle = cycle;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx,
ngx_core_module);
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_JUST_RESPAWN);
live = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
if (ngx_restart) {
ngx_restart = 0;
ngx_start_worker_processes(cycle, ccf->worker_processes,
NGX_PROCESS_RESPAWN);
live = 1;
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, ccf->user);
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_REOPEN_SIGNAL));
}
if (ngx_change_binary) {
ngx_change_binary = 0;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "changing binary");
ngx_new_binary = ngx_exec_new_binary(cycle, ngx_argv);
}
if (ngx_noaccept) {
ngx_noaccept = 0;
ngx_noaccepting = 1;
ngx_signal_worker_processes(cycle,
ngx_signal_value(NGX_SHUTDOWN_SIGNAL));
}
}
}
void ngx_single_process_cycle(ngx_cycle_t *cycle)
{
ngx_uint_t i;
ngx_init_temp_number();
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_process) {
if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
/* fatal */
exit(2);
}
}
}
for ( ;; ) {
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
ngx_process_events(cycle);
if (ngx_terminate || ngx_quit) {
ngx_master_exit(cycle);
}
if (ngx_reconfigure) {
ngx_reconfigure = 0;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reconfiguring");
cycle = ngx_init_cycle(cycle);
if (cycle == NULL) {
cycle = (ngx_cycle_t *) ngx_cycle;
continue;
}
ngx_cycle = cycle;
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reopening logs");
ngx_reopen_files(cycle, (ngx_uid_t) -1);
}
}
}
static void ngx_start_worker_processes(ngx_cycle_t *cycle, ngx_int_t n,
ngx_int_t type)
{
ngx_int_t i;
ngx_channel_t ch;
struct itimerval itv;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "start worker processes");
ch.command = NGX_CMD_OPEN_CHANNEL;
while (n--) {
ngx_spawn_process(cycle, ngx_worker_process_cycle, NULL,
"worker process", type);
ch.pid = ngx_processes[ngx_process_slot].pid;
ch.slot = ngx_process_slot;
ch.fd = ngx_processes[ngx_process_slot].channel[0];
for (i = 0; i < ngx_last_process; i++) {
if (i == ngx_process_slot
|| ngx_processes[i].pid == -1
|| ngx_processes[i].channel[0] == -1)
{
continue;
}
ngx_log_debug6(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"pass channel s:%d pid:" PID_T_FMT
" fd:%d to s:%d pid:" PID_T_FMT " fd:%d",
ch.slot, ch.pid, ch.fd,
i, ngx_processes[i].pid,
ngx_processes[i].channel[0]);
/* TODO: NGX_AGAIN */
ngx_write_channel(ngx_processes[i].channel[0],
&ch, sizeof(ngx_channel_t), cycle->log);
}
}
/*
* we have to limit the maximum life time of the worker processes
* by 10 days because our millisecond event timer is limited
* by 24 days on 32-bit platforms
*/
itv.it_interval.tv_sec = 0;
itv.it_interval.tv_usec = 0;
itv.it_value.tv_sec = 10 * 24 * 60 * 60;
itv.it_value.tv_usec = 0;
if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"setitimer() failed");
}
}
static void ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo)
{
ngx_int_t i;
ngx_err_t err;
ngx_channel_t ch;
switch (signo) {
case ngx_signal_value(NGX_SHUTDOWN_SIGNAL):
ch.command = NGX_CMD_QUIT;
break;
case ngx_signal_value(NGX_TERMINATE_SIGNAL):
ch.command = NGX_CMD_TERMINATE;
break;
case ngx_signal_value(NGX_REOPEN_SIGNAL):
ch.command = NGX_CMD_REOPEN;
break;
default:
ch.command = 0;
}
ch.fd = -1;
for (i = 0; i < ngx_last_process; i++) {
ngx_log_debug7(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"child: %d " PID_T_FMT " e:%d t:%d d:%d r:%d j:%d",
i,
ngx_processes[i].pid,
ngx_processes[i].exiting,
ngx_processes[i].exited,
ngx_processes[i].detached,
ngx_processes[i].respawn,
ngx_processes[i].just_respawn);
if (ngx_processes[i].detached || ngx_processes[i].pid == -1) {
continue;
}
if (ngx_processes[i].just_respawn) {
ngx_processes[i].just_respawn = 0;
continue;
}
if (ngx_processes[i].exiting
&& signo == ngx_signal_value(NGX_SHUTDOWN_SIGNAL))
{
continue;
}
if (ch.command) {
if (ngx_write_channel(ngx_processes[i].channel[0],
&ch, sizeof(ngx_channel_t), cycle->log) == NGX_OK)
{
if (signo != ngx_signal_value(NGX_REOPEN_SIGNAL)) {
ngx_processes[i].exiting = 1;
}
continue;
}
}
ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"kill (" PID_T_FMT ", %d)" ,
ngx_processes[i].pid, signo);
if (kill(ngx_processes[i].pid, signo) == -1) {
err = ngx_errno;
ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
"kill(%d, %d) failed",
ngx_processes[i].pid, signo);
if (err == NGX_ESRCH) {
ngx_processes[i].exited = 1;
ngx_processes[i].exiting = 0;
ngx_reap = 1;
}
continue;
}
if (signo != ngx_signal_value(NGX_REOPEN_SIGNAL)) {
ngx_processes[i].exiting = 1;
}
}
}
static ngx_uint_t ngx_reap_childs(ngx_cycle_t *cycle)
{
ngx_int_t i, n;
ngx_uint_t live;
ngx_channel_t ch;
ch.command = NGX_CMD_CLOSE_CHANNEL;
ch.fd = -1;
live = 0;
for (i = 0; i < ngx_last_process; i++) {
ngx_log_debug7(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
"child: %d " PID_T_FMT " e:%d t:%d d:%d r:%d j:%d",
i,
ngx_processes[i].pid,
ngx_processes[i].exiting,
ngx_processes[i].exited,
ngx_processes[i].detached,
ngx_processes[i].respawn,
ngx_processes[i].just_respawn);
if (ngx_processes[i].pid == -1) {
continue;
}
if (ngx_processes[i].exited) {
if (!ngx_processes[i].detached) {
ngx_close_channel(ngx_processes[i].channel, cycle->log);
ngx_processes[i].channel[0] = -1;
ngx_processes[i].channel[1] = -1;
ch.pid = ngx_processes[i].pid;
ch.slot = i;
for (n = 0; n < ngx_last_process; n++) {
if (ngx_processes[n].exited
|| ngx_processes[n].pid == -1
|| ngx_processes[n].channel[0] == -1)
{
continue;
}
ngx_log_debug3(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"pass close channel s:%d pid:" PID_T_FMT
" to:" PID_T_FMT, ch.slot, ch.pid, ngx_processes[n].pid);
/* TODO: NGX_AGAIN */
ngx_write_channel(ngx_processes[n].channel[0],
&ch, sizeof(ngx_channel_t), cycle->log);
}
}
if (ngx_processes[i].respawn
&& !ngx_processes[i].exiting
&& !ngx_terminate
&& !ngx_quit)
{
if (ngx_spawn_process(cycle, ngx_processes[i].proc,
ngx_processes[i].data,
ngx_processes[i].name, i)
== NGX_ERROR)
{
ngx_log_error(NGX_LOG_ALERT, cycle->log, 0,
"can not respawn %s", ngx_processes[i].name);
continue;
}
live = 1;
continue;
}
if (ngx_processes[i].pid == ngx_new_binary) {
ngx_new_binary = 0;
if (ngx_noaccepting) {
ngx_restart = 1;
ngx_noaccepting = 0;
}
}
if (i == ngx_last_process - 1) {
ngx_last_process--;
} else {
ngx_processes[i].pid = -1;
}
} else if (ngx_processes[i].exiting || !ngx_processes[i].detached) {
live = 1;
}
}
return live;
}
static void ngx_master_exit(ngx_cycle_t *cycle)
{
ngx_delete_pidfile(cycle);
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exit");
ngx_destroy_pool(cycle->pool);
exit(0);
}
static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data)
{
sigset_t set;
ngx_err_t err;
ngx_int_t n;
ngx_uint_t i;
struct timeval tv;
ngx_listening_t *ls;
ngx_core_conf_t *ccf;
ngx_connection_t *c;
ngx_gettimeofday(&tv);
ngx_start_msec = (ngx_epoch_msec_t) tv.tv_sec * 1000 + tv.tv_usec / 1000;
ngx_old_elapsed_msec = 0;
ngx_elapsed_msec = 0;
ngx_process = NGX_PROCESS_WORKER;
ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
if (geteuid() == 0) {
if (setgid(ccf->group) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setgid(%d) failed", ccf->group);
/* fatal */
exit(2);
}
if (setuid(ccf->user) == -1) {
ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
"setuid(%d) failed", ccf->user);
/* fatal */
exit(2);
}
}
#if (NGX_HAVE_PR_SET_DUMPABLE)
/* allow coredump after setuid() in Linux 2.4.x */
if (prctl(PR_SET_DUMPABLE, 1, 0, 0, 0) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"prctl(PR_SET_DUMPABLE) failed");
}
#endif
sigemptyset(&set);
if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"sigprocmask() failed");
}
ngx_init_temp_number();
/*
* disable deleting previous events for the listening sockets because
* in the worker processes there are no events at all at this point
*/
ls = cycle->listening.elts;
for (i = 0; i < cycle->listening.nelts; i++) {
ls[i].remain = 0;
}
for (i = 0; ngx_modules[i]; i++) {
if (ngx_modules[i]->init_process) {
if (ngx_modules[i]->init_process(cycle) == NGX_ERROR) {
/* fatal */
exit(2);
}
}
}
for (n = 0; n < ngx_last_process; n++) {
if (ngx_processes[n].pid == -1) {
continue;
}
if (n == ngx_process_slot) {
continue;
}
if (ngx_processes[n].channel[1] == -1) {
continue;
}
if (close(ngx_processes[n].channel[1]) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"close() failed");
}
}
if (close(ngx_processes[ngx_process_slot].channel[0]) == -1) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
"close() failed");
}
#if 0
ngx_last_process = 0;
#endif
if (ngx_add_channel_event(cycle, ngx_channel, NGX_READ_EVENT,
ngx_channel_handler) == NGX_ERROR)
{
/* fatal */
exit(2);
}
ngx_setproctitle("worker process");
#if (NGX_THREADS)
if (ngx_time_mutex_init(cycle->log) == NGX_ERROR) {
/* fatal */
exit(2);
}
if (ngx_threads_n) {
if (ngx_init_threads(ngx_threads_n,
ccf->thread_stack_size, cycle) == NGX_ERROR)
{
/* fatal */
exit(2);
}
err = ngx_thread_key_create(&ngx_core_tls_key);
if (err != 0) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
ngx_thread_key_create_n " failed");
/* fatal */
exit(2);
}
for (n = 0; n < ngx_threads_n; n++) {
if (!(ngx_threads[n].cv = ngx_cond_init(cycle->log))) {
/* fatal */
exit(2);
}
if (ngx_create_thread((ngx_tid_t *) &ngx_threads[n].tid,
ngx_worker_thread_cycle,
(void *) &ngx_threads[n], cycle->log) != 0)
{
/* fatal */
exit(2);
}
}
}
#endif
for ( ;; ) {
if (ngx_exiting
&& ngx_event_timer_rbtree == &ngx_event_timer_sentinel)
{
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exiting");
#if (NGX_THREADS)
ngx_terminate = 1;
ngx_wakeup_worker_threads(cycle);
#endif
/*
* we do not destroy cycle->pool here because a signal handler
* that uses cycle->log can be called at this point
*/
exit(0);
}
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle");
ngx_process_events(cycle);
if (ngx_terminate) {
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exiting");
#if (NGX_THREADS)
ngx_wakeup_worker_threads(cycle);
#endif
/*
* we do not destroy cycle->pool here because a signal handler
* that uses cycle->log can be called at this point
*/
exit(0);
}
if (ngx_quit) {
ngx_quit = 0;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0,
"gracefully shutting down");
ngx_setproctitle("worker process is shutting down");
if (!ngx_exiting) {
ngx_close_listening_sockets(cycle);
ngx_exiting = 1;
}
}
if (ngx_reopen) {
ngx_reopen = 0;
ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reopen logs");
ngx_reopen_files(cycle, -1);
}
}
}
static void ngx_channel_handler(ngx_event_t *ev)
{
ngx_int_t n;
ngx_channel_t ch;
ngx_connection_t *c;
c = ev->data;
ngx_log_debug0(NGX_LOG_DEBUG_CORE, ev->log, 0, "channel handler");
n = ngx_read_channel(c->fd, &ch, sizeof(ngx_channel_t), ev->log);
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, "channel: %d", n);
if (n <= 0) {
return;
}
ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0,
"channel command: %d", ch.command);
switch (ch.command) {
case NGX_CMD_QUIT:
ngx_quit = 1;
break;
case NGX_CMD_TERMINATE:
ngx_terminate = 1;
break;
case NGX_CMD_REOPEN:
ngx_reopen = 1;
break;
case NGX_CMD_OPEN_CHANNEL:
ngx_log_debug3(NGX_LOG_DEBUG_CORE, ev->log, 0,
"get channel s:%d pid:" PID_T_FMT " fd:%d",
ch.slot, ch.pid, ch.fd);
ngx_processes[ch.slot].pid = ch.pid;
ngx_processes[ch.slot].channel[0] = ch.fd;
break;
case NGX_CMD_CLOSE_CHANNEL:
ngx_log_debug4(NGX_LOG_DEBUG_CORE, ev->log, 0,
"close channel s:%d pid:" PID_T_FMT " our:" PID_T_FMT
" fd:%d",
ch.slot, ch.pid, ngx_processes[ch.slot].pid,
ngx_processes[ch.slot].channel[0]);
if (close(ngx_processes[ch.slot].channel[0]) == -1) {
ngx_log_error(NGX_LOG_ALERT, ev->log, ngx_errno, "close() failed");
}
ngx_processes[ch.slot].channel[0] = -1;
break;
}
}
#if (NGX_THREADS)
static void ngx_wakeup_worker_threads(ngx_cycle_t *cycle)
{
ngx_int_t i;
ngx_uint_t live;
for ( ;; ) {
live = 0;
for (i = 0; i < ngx_threads_n; i++) {
if (ngx_threads[i].state < NGX_THREAD_EXIT) {
ngx_cond_signal(ngx_threads[i].cv);
if (ngx_threads[i].cv->tid == (ngx_tid_t) -1) {
ngx_threads[i].state = NGX_THREAD_DONE;
} else {
live = 1;
}
}
if (ngx_threads[i].state == NGX_THREAD_EXIT) {
ngx_thread_join(ngx_threads[i].tid, NULL);
ngx_threads[i].state = NGX_THREAD_DONE;
}
}
if (live == 0) {
ngx_log_debug0(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"all worker threads are joined");
/* STUB */
ngx_done_events(cycle);
ngx_mutex_destroy(ngx_event_timer_mutex);
ngx_mutex_destroy(ngx_posted_events_mutex);
return;
}
ngx_sched_yield();
}
}
static void* ngx_worker_thread_cycle(void *data)
{
ngx_thread_t *thr = data;
sigset_t set;
ngx_err_t err;
ngx_core_tls_t *tls;
ngx_cycle_t *cycle;
struct timeval tv;
thr->cv->tid = ngx_thread_self();
cycle = (ngx_cycle_t *) ngx_cycle;
sigemptyset(&set);
sigaddset(&set, ngx_signal_value(NGX_RECONFIGURE_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_REOPEN_SIGNAL));
sigaddset(&set, ngx_signal_value(NGX_CHANGEBIN_SIGNAL));
err = ngx_thread_sigmask(SIG_BLOCK, &set, NULL);
if (err) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
ngx_thread_sigmask_n " failed");
return (void *) 1;
}
ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"thread " TID_T_FMT " started", ngx_thread_self());
ngx_setthrtitle("worker thread");
if (!(tls = ngx_calloc(sizeof(ngx_core_tls_t), cycle->log))) {
return (void *) 1;
}
err = ngx_thread_set_tls(ngx_core_tls_key, tls);
if (err != 0) {
ngx_log_error(NGX_LOG_ALERT, cycle->log, err,
ngx_thread_set_tls_n " failed");
return (void *) 1;
}
if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
return (void *) 1;
}
for ( ;; ) {
thr->state = NGX_THREAD_FREE;
if (ngx_cond_wait(thr->cv, ngx_posted_events_mutex) == NGX_ERROR) {
return (void *) 1;
}
if (ngx_terminate) {
thr->state = NGX_THREAD_EXIT;
ngx_mutex_unlock(ngx_posted_events_mutex);
ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0,
"thread %d is done", ngx_thread_self());
return (void *) 0;
}
thr->state = NGX_THREAD_BUSY;
if (ngx_event_thread_process_posted(cycle) == NGX_ERROR) {
return (void *) 1;
}
if (ngx_event_thread_process_posted(cycle) == NGX_ERROR) {
return (void *) 1;
}
if (ngx_process_changes) {
if (ngx_process_changes(cycle, 1) == NGX_ERROR) {
return (void *) 1;
}
}
}
}
#endif