| #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, ngx_master_ctx_t *ctx); | |
| 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, ngx_master_ctx_t *ctx) | |
| { | |
| 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 < ctx->argc; i++) { | |
| size += ngx_strlen(ctx->argv[i]) + 1; | |
| } | |
| title = ngx_palloc(cycle->pool, size); | |
| p = ngx_cpymem(title, master_process, sizeof(master_process) - 1); | |
| for (i = 0; i < ctx->argc; i++) { | |
| *p++ = ' '; | |
| p = ngx_cpystrn(p, (u_char *) ctx->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, ctx); | |
| } | |
| 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; | |
| 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_JUST_RESPAWN); | |
| 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, ctx->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_master_ctx_t *ctx) | |
| { | |
| ngx_uint_t i; | |
| #if 0 | |
| ngx_setproctitle("single worker process"); | |
| #endif | |
| 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, ctx); | |
| } | |
| 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) { | |
| continue; | |
| } | |
| ngx_log_debug5(NGX_LOG_DEBUG_CORE, cycle->log, 0, | |
| "pass channel s:%d pid:" PID_T_FMT | |
| " fd:%d to s:%d pid:" PID_T_FMT, | |
| ch.slot, ch.pid, ch.fd, | |
| i, ngx_processes[i].pid); | |
| /* 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++) { | |
| 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_master_ctx_t *ctx) | |
| { | |
| 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; | |
| ngx_listening_t *ls; | |
| ngx_core_conf_t *ccf; | |
| ngx_connection_t *c; | |
| ngx_process = NGX_PROCESS_WORKER; | |
| ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); | |
| if (ccf->group != (gid_t) NGX_CONF_UNSET) { | |
| if (setgid(ccf->group) == -1) { | |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, | |
| "setgid(%d) failed", ccf->group); | |
| /* fatal */ | |
| exit(2); | |
| } | |
| } | |
| if (ccf->user != (uid_t) NGX_CONF_UNSET) { | |
| if (setuid(ccf->user) == -1) { | |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, | |
| "setuid(%d) failed", ccf->user); | |
| /* fatal */ | |
| exit(2); | |
| } | |
| } | |
| #if (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 (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 |