diff options
Diffstat (limited to 'app/nginx/src/os/unix/ngx_process_cycle.c')
-rw-r--r-- | app/nginx/src/os/unix/ngx_process_cycle.c | 1196 |
1 files changed, 0 insertions, 1196 deletions
diff --git a/app/nginx/src/os/unix/ngx_process_cycle.c b/app/nginx/src/os/unix/ngx_process_cycle.c deleted file mode 100644 index 1710ea8..0000000 --- a/app/nginx/src/os/unix/ngx_process_cycle.c +++ /dev/null @@ -1,1196 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#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_start_cache_manager_processes(ngx_cycle_t *cycle, - ngx_uint_t respawn); -static void ngx_pass_open_channel(ngx_cycle_t *cycle, ngx_channel_t *ch); -static void ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo); -static ngx_uint_t ngx_reap_children(ngx_cycle_t *cycle); -static void ngx_master_process_exit(ngx_cycle_t *cycle); -static void ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data); -static void ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker); -static void ngx_worker_process_exit(ngx_cycle_t *cycle); -static void ngx_channel_handler(ngx_event_t *ev); -static void ngx_cache_manager_process_cycle(ngx_cycle_t *cycle, void *data); -static void ngx_cache_manager_process_handler(ngx_event_t *ev); -static void ngx_cache_loader_process_handler(ngx_event_t *ev); - - -ngx_uint_t ngx_process; -ngx_uint_t ngx_worker; -ngx_pid_t ngx_pid; - -sig_atomic_t ngx_reap; -sig_atomic_t ngx_sigio; -sig_atomic_t ngx_sigalrm; -sig_atomic_t ngx_terminate; -sig_atomic_t ngx_quit; -sig_atomic_t ngx_debug_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; - - -static u_char master_process[] = "master process"; - - -static ngx_cache_manager_ctx_t ngx_cache_manager_ctx = { - ngx_cache_manager_process_handler, "cache manager process", 0 -}; - -static ngx_cache_manager_ctx_t ngx_cache_loader_ctx = { - ngx_cache_loader_process_handler, "cache loader process", 60000 -}; - - -static ngx_cycle_t ngx_exit_cycle; -static ngx_log_t ngx_exit_log; -static ngx_open_file_t ngx_exit_log_file; - - -void -ngx_master_process_cycle(ngx_cycle_t *cycle) -{ - char *title; - u_char *p; - size_t size; - ngx_int_t i; - ngx_uint_t n, sigio; - sigset_t set; - struct itimerval itv; - ngx_uint_t live; - ngx_msec_t delay; - ngx_listening_t *ls; - 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_pnalloc(cycle->pool, size); - if (title == NULL) { - /* fatal */ - exit(2); - } - - 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_start_cache_manager_processes(cycle, 0); - - ngx_new_binary = 0; - delay = 0; - sigio = 0; - live = 1; - - for ( ;; ) { - if (delay) { - if (ngx_sigalrm) { - sigio = 0; - delay *= 2; - ngx_sigalrm = 0; - } - - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "termination cycle: %M", 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_time_update(); - - ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "wake up, sigio %i", sigio); - - if (ngx_reap) { - ngx_reap = 0; - ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap children"); - - live = ngx_reap_children(cycle); - } - - if (!live && (ngx_terminate || ngx_quit)) { - ngx_master_process_exit(cycle); - } - - if (ngx_terminate) { - if (delay == 0) { - delay = 50; - } - - if (sigio) { - sigio--; - continue; - } - - sigio = ccf->worker_processes + 2 /* cache processes */; - - 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)); - - ls = cycle->listening.elts; - for (n = 0; n < cycle->listening.nelts; n++) { - if (ngx_close_socket(ls[n].fd) == -1) { - ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno, - ngx_close_socket_n " %V failed", - &ls[n].addr_text); - } - } - cycle->listening.nelts = 0; - - continue; - } - - if (ngx_reconfigure) { - ngx_reconfigure = 0; - - if (ngx_new_binary) { - ngx_start_worker_processes(cycle, ccf->worker_processes, - NGX_PROCESS_RESPAWN); - ngx_start_cache_manager_processes(cycle, 0); - ngx_noaccepting = 0; - - continue; - } - - ngx_log_error(NGX_LOG_NOTICE, 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); - ngx_start_cache_manager_processes(cycle, 1); - - /* allow new processes to start */ - ngx_msleep(100); - - 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); - ngx_start_cache_manager_processes(cycle, 0); - live = 1; - } - - if (ngx_reopen) { - ngx_reopen = 0; - ngx_log_error(NGX_LOG_NOTICE, 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_NOTICE, 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; - - if (ngx_set_environment(cycle, NULL) == NULL) { - /* fatal */ - exit(2); - } - - for (i = 0; cycle->modules[i]; i++) { - if (cycle->modules[i]->init_process) { - if (cycle->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_and_timers(cycle); - - if (ngx_terminate || ngx_quit) { - - for (i = 0; cycle->modules[i]; i++) { - if (cycle->modules[i]->exit_process) { - cycle->modules[i]->exit_process(cycle); - } - } - - ngx_master_process_exit(cycle); - } - - if (ngx_reconfigure) { - ngx_reconfigure = 0; - ngx_log_error(NGX_LOG_NOTICE, 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_NOTICE, 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; - - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start worker processes"); - - ngx_memzero(&ch, sizeof(ngx_channel_t)); - - ch.command = NGX_CMD_OPEN_CHANNEL; - - for (i = 0; i < n; i++) { - - ngx_spawn_process(cycle, ngx_worker_process_cycle, - (void *) (intptr_t) i, "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]; - - ngx_pass_open_channel(cycle, &ch); - } -} - - -static void -ngx_start_cache_manager_processes(ngx_cycle_t *cycle, ngx_uint_t respawn) -{ - ngx_uint_t i, manager, loader; - ngx_path_t **path; - ngx_channel_t ch; - - manager = 0; - loader = 0; - - path = ngx_cycle->paths.elts; - for (i = 0; i < ngx_cycle->paths.nelts; i++) { - - if (path[i]->manager) { - manager = 1; - } - - if (path[i]->loader) { - loader = 1; - } - } - - if (manager == 0) { - return; - } - - ngx_spawn_process(cycle, ngx_cache_manager_process_cycle, - &ngx_cache_manager_ctx, "cache manager process", - respawn ? NGX_PROCESS_JUST_RESPAWN : NGX_PROCESS_RESPAWN); - - ngx_memzero(&ch, sizeof(ngx_channel_t)); - - ch.command = NGX_CMD_OPEN_CHANNEL; - ch.pid = ngx_processes[ngx_process_slot].pid; - ch.slot = ngx_process_slot; - ch.fd = ngx_processes[ngx_process_slot].channel[0]; - - ngx_pass_open_channel(cycle, &ch); - - if (loader == 0) { - return; - } - - ngx_spawn_process(cycle, ngx_cache_manager_process_cycle, - &ngx_cache_loader_ctx, "cache loader process", - respawn ? NGX_PROCESS_JUST_SPAWN : NGX_PROCESS_NORESPAWN); - - ch.command = NGX_CMD_OPEN_CHANNEL; - ch.pid = ngx_processes[ngx_process_slot].pid; - ch.slot = ngx_process_slot; - ch.fd = ngx_processes[ngx_process_slot].channel[0]; - - ngx_pass_open_channel(cycle, &ch); -} - - -static void -ngx_pass_open_channel(ngx_cycle_t *cycle, ngx_channel_t *ch) -{ - ngx_int_t i; - - 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:%i pid:%P fd:%d to s:%i pid:%P 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); - } -} - - -static void -ngx_signal_worker_processes(ngx_cycle_t *cycle, int signo) -{ - ngx_int_t i; - ngx_err_t err; - ngx_channel_t ch; - - ngx_memzero(&ch, sizeof(ngx_channel_t)); - -#if (NGX_BROKEN_SCM_RIGHTS) - - ch.command = 0; - -#else - - 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; - } - -#endif - - ch.fd = -1; - - - for (i = 0; i < ngx_last_process; i++) { - - ngx_log_debug7(NGX_LOG_DEBUG_EVENT, cycle->log, 0, - "child: %i %P 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_spawn); - - if (ngx_processes[i].detached || ngx_processes[i].pid == -1) { - continue; - } - - if (ngx_processes[i].just_spawn) { - ngx_processes[i].just_spawn = 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 (%P, %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(%P, %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_children(ngx_cycle_t *cycle) -{ - ngx_int_t i, n; - ngx_uint_t live; - ngx_channel_t ch; - ngx_core_conf_t *ccf; - - ngx_memzero(&ch, sizeof(ngx_channel_t)); - - 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: %i %P 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_spawn); - - 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:%i pid:%P to:%P", - 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_INVALID_PID) - { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "could not respawn %s", - ngx_processes[i].name); - continue; - } - - - ch.command = NGX_CMD_OPEN_CHANNEL; - ch.pid = ngx_processes[ngx_process_slot].pid; - ch.slot = ngx_process_slot; - ch.fd = ngx_processes[ngx_process_slot].channel[0]; - - ngx_pass_open_channel(cycle, &ch); - - live = 1; - - continue; - } - - if (ngx_processes[i].pid == ngx_new_binary) { - - ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, - ngx_core_module); - - if (ngx_rename_file((char *) ccf->oldpid.data, - (char *) ccf->pid.data) - == NGX_FILE_ERROR) - { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - ngx_rename_file_n " %s back to %s failed " - "after the new binary process \"%s\" exited", - ccf->oldpid.data, ccf->pid.data, ngx_argv[0]); - } - - 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_process_exit(ngx_cycle_t *cycle) -{ - ngx_uint_t i; - - ngx_delete_pidfile(cycle); - - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exit"); - - for (i = 0; cycle->modules[i]; i++) { - if (cycle->modules[i]->exit_master) { - cycle->modules[i]->exit_master(cycle); - } - } - - ngx_close_listening_sockets(cycle); - - /* - * Copy ngx_cycle->log related data to the special static exit cycle, - * log, and log file structures enough to allow a signal handler to log. - * The handler may be called when standard ngx_cycle->log allocated from - * ngx_cycle->pool is already destroyed. - */ - - - ngx_exit_log = *ngx_log_get_file_log(ngx_cycle->log); - - ngx_exit_log_file.fd = ngx_exit_log.file->fd; - ngx_exit_log.file = &ngx_exit_log_file; - ngx_exit_log.next = NULL; - ngx_exit_log.writer = NULL; - - ngx_exit_cycle.log = &ngx_exit_log; - ngx_exit_cycle.files = ngx_cycle->files; - ngx_exit_cycle.files_n = ngx_cycle->files_n; - ngx_cycle = &ngx_exit_cycle; - - ngx_destroy_pool(cycle->pool); - - exit(0); -} - - -static void -ngx_worker_process_cycle(ngx_cycle_t *cycle, void *data) -{ - ngx_int_t worker = (intptr_t) data; - - ngx_process = NGX_PROCESS_WORKER; - ngx_worker = worker; - - ngx_worker_process_init(cycle, worker); - - ngx_setproctitle("worker process"); - - for ( ;; ) { - - if (ngx_exiting) { - if (ngx_event_no_timers_left() == NGX_OK) { - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); - ngx_worker_process_exit(cycle); - } - } - - ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle"); - - ngx_process_events_and_timers(cycle); - - if (ngx_terminate) { - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); - ngx_worker_process_exit(cycle); - } - - if (ngx_quit) { - ngx_quit = 0; - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, - "gracefully shutting down"); - ngx_setproctitle("worker process is shutting down"); - - if (!ngx_exiting) { - ngx_exiting = 1; - ngx_set_shutdown_timer(cycle); - ngx_close_listening_sockets(cycle); - ngx_close_idle_connections(cycle); - } - } - - if (ngx_reopen) { - ngx_reopen = 0; - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs"); - ngx_reopen_files(cycle, -1); - } - } -} - - -static void -ngx_worker_process_init(ngx_cycle_t *cycle, ngx_int_t worker) -{ - sigset_t set; - ngx_int_t n; - ngx_time_t *tp; - ngx_uint_t i; - ngx_cpuset_t *cpu_affinity; - struct rlimit rlmt; - ngx_core_conf_t *ccf; - ngx_listening_t *ls; - - if (ngx_set_environment(cycle, NULL) == NULL) { - /* fatal */ - exit(2); - } - - ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module); - - if (worker >= 0 && ccf->priority != 0) { - if (setpriority(PRIO_PROCESS, 0, ccf->priority) == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - "setpriority(%d) failed", ccf->priority); - } - } - - if (ccf->rlimit_nofile != NGX_CONF_UNSET) { - rlmt.rlim_cur = (rlim_t) ccf->rlimit_nofile; - rlmt.rlim_max = (rlim_t) ccf->rlimit_nofile; - - if (setrlimit(RLIMIT_NOFILE, &rlmt) == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - "setrlimit(RLIMIT_NOFILE, %i) failed", - ccf->rlimit_nofile); - } - } - - if (ccf->rlimit_core != NGX_CONF_UNSET) { - rlmt.rlim_cur = (rlim_t) ccf->rlimit_core; - rlmt.rlim_max = (rlim_t) ccf->rlimit_core; - - if (setrlimit(RLIMIT_CORE, &rlmt) == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - "setrlimit(RLIMIT_CORE, %O) failed", - ccf->rlimit_core); - } - } - - 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 (initgroups(ccf->username, ccf->group) == -1) { - ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, - "initgroups(%s, %d) failed", - ccf->username, ccf->group); - } - - if (setuid(ccf->user) == -1) { - ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, - "setuid(%d) failed", ccf->user); - /* fatal */ - exit(2); - } - } - - if (worker >= 0) { - cpu_affinity = ngx_get_cpu_affinity(worker); - - if (cpu_affinity) { - ngx_setaffinity(cpu_affinity, cycle->log); - } - } - -#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 - - if (ccf->working_directory.len) { - if (chdir((char *) ccf->working_directory.data) == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - "chdir(\"%s\") failed", ccf->working_directory.data); - /* fatal */ - exit(2); - } - } - - sigemptyset(&set); - - if (sigprocmask(SIG_SETMASK, &set, NULL) == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - "sigprocmask() failed"); - } - - tp = ngx_timeofday(); - srandom(((unsigned) ngx_pid << 16) ^ tp->sec ^ tp->msec); - - /* - * 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].previous = NULL; - } - - for (i = 0; cycle->modules[i]; i++) { - if (cycle->modules[i]->init_process) { - if (cycle->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() channel failed"); - } - } - - if (close(ngx_processes[ngx_process_slot].channel[0]) == -1) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, - "close() channel 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); - } -} - - -static void -ngx_worker_process_exit(ngx_cycle_t *cycle) -{ - ngx_uint_t i; - ngx_connection_t *c; - - for (i = 0; cycle->modules[i]; i++) { - if (cycle->modules[i]->exit_process) { - cycle->modules[i]->exit_process(cycle); - } - } - - if (ngx_exiting) { - c = cycle->connections; - for (i = 0; i < cycle->connection_n; i++) { - if (c[i].fd != -1 - && c[i].read - && !c[i].read->accept - && !c[i].read->channel - && !c[i].read->resolver) - { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, - "*%uA open socket #%d left in connection %ui", - c[i].number, c[i].fd, i); - ngx_debug_quit = 1; - } - } - - if (ngx_debug_quit) { - ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "aborting"); - ngx_debug_point(); - } - } - - /* - * Copy ngx_cycle->log related data to the special static exit cycle, - * log, and log file structures enough to allow a signal handler to log. - * The handler may be called when standard ngx_cycle->log allocated from - * ngx_cycle->pool is already destroyed. - */ - - ngx_exit_log = *ngx_log_get_file_log(ngx_cycle->log); - - ngx_exit_log_file.fd = ngx_exit_log.file->fd; - ngx_exit_log.file = &ngx_exit_log_file; - ngx_exit_log.next = NULL; - ngx_exit_log.writer = NULL; - - ngx_exit_cycle.log = &ngx_exit_log; - ngx_exit_cycle.files = ngx_cycle->files; - ngx_exit_cycle.files_n = ngx_cycle->files_n; - ngx_cycle = &ngx_exit_cycle; - - ngx_destroy_pool(cycle->pool); - - ngx_log_error(NGX_LOG_NOTICE, ngx_cycle->log, 0, "exit"); - - exit(0); -} - - -static void -ngx_channel_handler(ngx_event_t *ev) -{ - ngx_int_t n; - ngx_channel_t ch; - ngx_connection_t *c; - - if (ev->timedout) { - ev->timedout = 0; - return; - } - - c = ev->data; - - ngx_log_debug0(NGX_LOG_DEBUG_CORE, ev->log, 0, "channel handler"); - - for ( ;; ) { - - n = ngx_read_channel(c->fd, &ch, sizeof(ngx_channel_t), ev->log); - - ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, "channel: %i", n); - - if (n == NGX_ERROR) { - - if (ngx_event_flags & NGX_USE_EPOLL_EVENT) { - ngx_del_conn(c, 0); - } - - ngx_close_connection(c); - return; - } - - if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) { - if (ngx_add_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) { - return; - } - } - - if (n == NGX_AGAIN) { - return; - } - - ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, - "channel command: %ui", 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:%i pid:%P 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:%i pid:%P our:%P 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() channel failed"); - } - - ngx_processes[ch.slot].channel[0] = -1; - break; - } - } -} - - -static void -ngx_cache_manager_process_cycle(ngx_cycle_t *cycle, void *data) -{ - ngx_cache_manager_ctx_t *ctx = data; - - void *ident[4]; - ngx_event_t ev; - - /* - * Set correct process type since closing listening Unix domain socket - * in a master process also removes the Unix domain socket file. - */ - ngx_process = NGX_PROCESS_HELPER; - - ngx_close_listening_sockets(cycle); - - /* Set a moderate number of connections for a helper process. */ - cycle->connection_n = 512; - - ngx_worker_process_init(cycle, -1); - - ngx_memzero(&ev, sizeof(ngx_event_t)); - ev.handler = ctx->handler; - ev.data = ident; - ev.log = cycle->log; - ident[3] = (void *) -1; - - ngx_use_accept_mutex = 0; - - ngx_setproctitle(ctx->name); - - ngx_add_timer(&ev, ctx->delay); - - for ( ;; ) { - - if (ngx_terminate || ngx_quit) { - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "exiting"); - exit(0); - } - - if (ngx_reopen) { - ngx_reopen = 0; - ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "reopening logs"); - ngx_reopen_files(cycle, -1); - } - - ngx_process_events_and_timers(cycle); - } -} - - -static void -ngx_cache_manager_process_handler(ngx_event_t *ev) -{ - ngx_uint_t i; - ngx_msec_t next, n; - ngx_path_t **path; - - next = 60 * 60 * 1000; - - path = ngx_cycle->paths.elts; - for (i = 0; i < ngx_cycle->paths.nelts; i++) { - - if (path[i]->manager) { - n = path[i]->manager(path[i]->data); - - next = (n <= next) ? n : next; - - ngx_time_update(); - } - } - - if (next == 0) { - next = 1; - } - - ngx_add_timer(ev, next); -} - - -static void -ngx_cache_loader_process_handler(ngx_event_t *ev) -{ - ngx_uint_t i; - ngx_path_t **path; - ngx_cycle_t *cycle; - - cycle = (ngx_cycle_t *) ngx_cycle; - - path = cycle->paths.elts; - for (i = 0; i < cycle->paths.nelts; i++) { - - if (ngx_terminate || ngx_quit) { - break; - } - - if (path[i]->loader) { - path[i]->loader(path[i]->data); - ngx_time_update(); - } - } - - exit(0); -} |