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src/event/ngx_event.c - nginx-1.7.10
Global variables defined
Functions defined
Macros defined
Source code
- #include <ngx_config.h>
- #include <ngx_core.h>
- #include <ngx_event.h>
- #define DEFAULT_CONNECTIONS 512
- extern ngx_module_t ngx_kqueue_module;
- extern ngx_module_t ngx_eventport_module;
- extern ngx_module_t ngx_devpoll_module;
- extern ngx_module_t ngx_epoll_module;
- extern ngx_module_t ngx_rtsig_module;
- extern ngx_module_t ngx_select_module;
- static char *ngx_event_init_conf(ngx_cycle_t *cycle, void *conf);
- static ngx_int_t ngx_event_module_init(ngx_cycle_t *cycle);
- static ngx_int_t ngx_event_process_init(ngx_cycle_t *cycle);
- static char *ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
- static char *ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd,
- void *conf);
- static char *ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
- static char *ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd,
- void *conf);
- static void *ngx_event_core_create_conf(ngx_cycle_t *cycle);
- static char *ngx_event_core_init_conf(ngx_cycle_t *cycle, void *conf);
- static ngx_uint_t ngx_timer_resolution;
- sig_atomic_t ngx_event_timer_alarm;
- static ngx_uint_t ngx_event_max_module;
- ngx_uint_t ngx_event_flags;
- ngx_event_actions_t ngx_event_actions;
- static ngx_atomic_t connection_counter = 1;
- ngx_atomic_t *ngx_connection_counter = &connection_counter;
- ngx_atomic_t *ngx_accept_mutex_ptr;
- ngx_shmtx_t ngx_accept_mutex;
- ngx_uint_t ngx_use_accept_mutex;
- ngx_uint_t ngx_accept_events;
- ngx_uint_t ngx_accept_mutex_held;
- ngx_msec_t ngx_accept_mutex_delay;
- ngx_int_t ngx_accept_disabled;
- #if (NGX_STAT_STUB)
- ngx_atomic_t ngx_stat_accepted0;
- ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0;
- ngx_atomic_t ngx_stat_handled0;
- ngx_atomic_t *ngx_stat_handled = &ngx_stat_handled0;
- ngx_atomic_t ngx_stat_requests0;
- ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0;
- ngx_atomic_t ngx_stat_active0;
- ngx_atomic_t *ngx_stat_active = &ngx_stat_active0;
- ngx_atomic_t ngx_stat_reading0;
- ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0;
- ngx_atomic_t ngx_stat_writing0;
- ngx_atomic_t *ngx_stat_writing = &ngx_stat_writing0;
- ngx_atomic_t ngx_stat_waiting0;
- ngx_atomic_t *ngx_stat_waiting = &ngx_stat_waiting0;
- #endif
- static ngx_command_t ngx_events_commands[] = {
- { ngx_string("events"),
- NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
- ngx_events_block,
- 0,
- 0,
- NULL },
- ngx_null_command
- };
- static ngx_core_module_t ngx_events_module_ctx = {
- ngx_string("events"),
- NULL,
- ngx_event_init_conf
- };
- ngx_module_t ngx_events_module = {
- NGX_MODULE_V1,
- &ngx_events_module_ctx,
- ngx_events_commands,
- NGX_CORE_MODULE,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NGX_MODULE_V1_PADDING
- };
- static ngx_str_t event_core_name = ngx_string("event_core");
- static ngx_command_t ngx_event_core_commands[] = {
- { ngx_string("worker_connections"),
- NGX_EVENT_CONF|NGX_CONF_TAKE1,
- ngx_event_connections,
- 0,
- 0,
- NULL },
- { ngx_string("connections"),
- NGX_EVENT_CONF|NGX_CONF_TAKE1,
- ngx_event_connections,
- 0,
- 0,
- NULL },
- { ngx_string("use"),
- NGX_EVENT_CONF|NGX_CONF_TAKE1,
- ngx_event_use,
- 0,
- 0,
- NULL },
- { ngx_string("multi_accept"),
- NGX_EVENT_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- 0,
- offsetof(ngx_event_conf_t, multi_accept),
- NULL },
- { ngx_string("accept_mutex"),
- NGX_EVENT_CONF|NGX_CONF_FLAG,
- ngx_conf_set_flag_slot,
- 0,
- offsetof(ngx_event_conf_t, accept_mutex),
- NULL },
- { ngx_string("accept_mutex_delay"),
- NGX_EVENT_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_msec_slot,
- 0,
- offsetof(ngx_event_conf_t, accept_mutex_delay),
- NULL },
- { ngx_string("debug_connection"),
- NGX_EVENT_CONF|NGX_CONF_TAKE1,
- ngx_event_debug_connection,
- 0,
- 0,
- NULL },
- ngx_null_command
- };
- ngx_event_module_t ngx_event_core_module_ctx = {
- &event_core_name,
- ngx_event_core_create_conf,
- ngx_event_core_init_conf,
- { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
- };
- ngx_module_t ngx_event_core_module = {
- NGX_MODULE_V1,
- &ngx_event_core_module_ctx,
- ngx_event_core_commands,
- NGX_EVENT_MODULE,
- NULL,
- ngx_event_module_init,
- ngx_event_process_init,
- NULL,
- NULL,
- NULL,
- NULL,
- NGX_MODULE_V1_PADDING
- };
- void
- ngx_process_events_and_timers(ngx_cycle_t *cycle)
- {
- ngx_uint_t flags;
- ngx_msec_t timer, delta;
- if (ngx_timer_resolution) {
- timer = NGX_TIMER_INFINITE;
- flags = 0;
- } else {
- timer = ngx_event_find_timer();
- flags = NGX_UPDATE_TIME;
- #if (NGX_THREADS)
- if (timer == NGX_TIMER_INFINITE || timer > 500) {
- timer = 500;
- }
- #endif
- }
- if (ngx_use_accept_mutex) {
- if (ngx_accept_disabled > 0) {
- ngx_accept_disabled--;
- } else {
- if (ngx_trylock_accept_mutex(cycle) == NGX_ERROR) {
- return;
- }
- if (ngx_accept_mutex_held) {
- flags |= NGX_POST_EVENTS;
- } else {
- if (timer == NGX_TIMER_INFINITE
- || timer > ngx_accept_mutex_delay)
- {
- timer = ngx_accept_mutex_delay;
- }
- }
- }
- }
- delta = ngx_current_msec;
- (void) ngx_process_events(cycle, timer, flags);
- delta = ngx_current_msec - delta;
- ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
- "timer delta: %M", delta);
- ngx_event_process_posted(cycle, &ngx_posted_accept_events);
- if (ngx_accept_mutex_held) {
- ngx_shmtx_unlock(&ngx_accept_mutex);
- }
- if (delta) {
- ngx_event_expire_timers();
- }
- ngx_event_process_posted(cycle, &ngx_posted_events);
- }
- ngx_int_t
- ngx_handle_read_event(ngx_event_t *rev, ngx_uint_t flags)
- {
- if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
-
- if (!rev->active && !rev->ready) {
- if (ngx_add_event(rev, NGX_READ_EVENT, NGX_CLEAR_EVENT)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
-
- if (!rev->active && !rev->ready) {
- if (ngx_add_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- if (rev->active && (rev->ready || (flags & NGX_CLOSE_EVENT))) {
- if (ngx_del_event(rev, NGX_READ_EVENT, NGX_LEVEL_EVENT | flags)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
-
- if (!rev->active && !rev->ready) {
- if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- if (rev->oneshot && !rev->ready) {
- if (ngx_del_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- }
-
- return NGX_OK;
- }
- ngx_int_t
- ngx_handle_write_event(ngx_event_t *wev, size_t lowat)
- {
- ngx_connection_t *c;
- if (lowat) {
- c = wev->data;
- if (ngx_send_lowat(c, lowat) == NGX_ERROR) {
- return NGX_ERROR;
- }
- }
- if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
-
- if (!wev->active && !wev->ready) {
- if (ngx_add_event(wev, NGX_WRITE_EVENT,
- NGX_CLEAR_EVENT | (lowat ? NGX_LOWAT_EVENT : 0))
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- }
- return NGX_OK;
- } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
-
- if (!wev->active && !wev->ready) {
- if (ngx_add_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- if (wev->active && wev->ready) {
- if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_LEVEL_EVENT)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- } else if (ngx_event_flags & NGX_USE_EVENTPORT_EVENT) {
-
- if (!wev->active && !wev->ready) {
- if (ngx_add_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- if (wev->oneshot && wev->ready) {
- if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
- return NGX_ERROR;
- }
- return NGX_OK;
- }
- }
-
- return NGX_OK;
- }
- static char *
- ngx_event_init_conf(ngx_cycle_t *cycle, void *conf)
- {
- if (ngx_get_conf(cycle->conf_ctx, ngx_events_module) == NULL) {
- ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
- "no \"events\" section in configuration");
- return NGX_CONF_ERROR;
- }
- return NGX_CONF_OK;
- }
- static ngx_int_t
- ngx_event_module_init(ngx_cycle_t *cycle)
- {
- void ***cf;
- u_char *shared;
- size_t size, cl;
- ngx_shm_t shm;
- ngx_time_t *tp;
- ngx_core_conf_t *ccf;
- ngx_event_conf_t *ecf;
- cf = ngx_get_conf(cycle->conf_ctx, ngx_events_module);
- ecf = (*cf)[ngx_event_core_module.ctx_index];
- if (!ngx_test_config && ngx_process <= NGX_PROCESS_MASTER) {
- ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0,
- "using the \"%s\" event method", ecf->name);
- }
- ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
- ngx_timer_resolution = ccf->timer_resolution;
- #if !(NGX_WIN32)
- {
- ngx_int_t limit;
- struct rlimit rlmt;
- if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
- ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
- "getrlimit(RLIMIT_NOFILE) failed, ignored");
- } else {
- if (ecf->connections > (ngx_uint_t) rlmt.rlim_cur
- && (ccf->rlimit_nofile == NGX_CONF_UNSET
- || ecf->connections > (ngx_uint_t) ccf->rlimit_nofile))
- {
- limit = (ccf->rlimit_nofile == NGX_CONF_UNSET) ?
- (ngx_int_t) rlmt.rlim_cur : ccf->rlimit_nofile;
- ngx_log_error(NGX_LOG_WARN, cycle->log, 0,
- "%ui worker_connections exceed "
- "open file resource limit: %i",
- ecf->connections, limit);
- }
- }
- }
- #endif
- if (ccf->master == 0) {
- return NGX_OK;
- }
- if (ngx_accept_mutex_ptr) {
- return NGX_OK;
- }
-
- cl = 128;
- size = cl
- + cl
- + cl;
- #if (NGX_STAT_STUB)
- size += cl
- + cl
- + cl
- + cl
- + cl
- + cl
- + cl;
- #endif
- shm.size = size;
- shm.name.len = sizeof("nginx_shared_zone");
- shm.name.data = (u_char *) "nginx_shared_zone";
- shm.log = cycle->log;
- if (ngx_shm_alloc(&shm) != NGX_OK) {
- return NGX_ERROR;
- }
- shared = shm.addr;
- ngx_accept_mutex_ptr = (ngx_atomic_t *) shared;
- ngx_accept_mutex.spin = (ngx_uint_t) -1;
- if (ngx_shmtx_create(&ngx_accept_mutex, (ngx_shmtx_sh_t *) shared,
- cycle->lock_file.data)
- != NGX_OK)
- {
- return NGX_ERROR;
- }
- ngx_connection_counter = (ngx_atomic_t *) (shared + 1 * cl);
- (void) ngx_atomic_cmp_set(ngx_connection_counter, 0, 1);
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0,
- "counter: %p, %d",
- ngx_connection_counter, *ngx_connection_counter);
- ngx_temp_number = (ngx_atomic_t *) (shared + 2 * cl);
- tp = ngx_timeofday();
- ngx_random_number = (tp->msec << 16) + ngx_pid;
- #if (NGX_STAT_STUB)
- ngx_stat_accepted = (ngx_atomic_t *) (shared + 3 * cl);
- ngx_stat_handled = (ngx_atomic_t *) (shared + 4 * cl);
- ngx_stat_requests = (ngx_atomic_t *) (shared + 5 * cl);
- ngx_stat_active = (ngx_atomic_t *) (shared + 6 * cl);
- ngx_stat_reading = (ngx_atomic_t *) (shared + 7 * cl);
- ngx_stat_writing = (ngx_atomic_t *) (shared + 8 * cl);
- ngx_stat_waiting = (ngx_atomic_t *) (shared + 9 * cl);
- #endif
- return NGX_OK;
- }
- #if !(NGX_WIN32)
- static void
- ngx_timer_signal_handler(int signo)
- {
- ngx_event_timer_alarm = 1;
- #if 1
- ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ngx_cycle->log, 0, "timer signal");
- #endif
- }
- #endif
- static ngx_int_t
- ngx_event_process_init(ngx_cycle_t *cycle)
- {
- ngx_uint_t m, i;
- ngx_event_t *rev, *wev;
- ngx_listening_t *ls;
- ngx_connection_t *c, *next, *old;
- ngx_core_conf_t *ccf;
- ngx_event_conf_t *ecf;
- ngx_event_module_t *module;
- ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
- ecf = ngx_event_get_conf(cycle->conf_ctx, ngx_event_core_module);
- if (ccf->master && ccf->worker_processes > 1 && ecf->accept_mutex) {
- ngx_use_accept_mutex = 1;
- ngx_accept_mutex_held = 0;
- ngx_accept_mutex_delay = ecf->accept_mutex_delay;
- } else {
- ngx_use_accept_mutex = 0;
- }
- #if (NGX_WIN32)
-
- ngx_use_accept_mutex = 0;
- #endif
- ngx_queue_init(&ngx_posted_accept_events);
- ngx_queue_init(&ngx_posted_events);
- if (ngx_event_timer_init(cycle->log) == NGX_ERROR) {
- return NGX_ERROR;
- }
- for (m = 0; ngx_modules[m]; m++) {
- if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
- continue;
- }
- if (ngx_modules[m]->ctx_index != ecf->use) {
- continue;
- }
- module = ngx_modules[m]->ctx;
- if (module->actions.init(cycle, ngx_timer_resolution) != NGX_OK) {
-
- exit(2);
- }
- break;
- }
- #if !(NGX_WIN32)
- if (ngx_timer_resolution && !(ngx_event_flags & NGX_USE_TIMER_EVENT)) {
- struct sigaction sa;
- struct itimerval itv;
- ngx_memzero(&sa, sizeof(struct sigaction));
- sa.sa_handler = ngx_timer_signal_handler;
- sigemptyset(&sa.sa_mask);
- if (sigaction(SIGALRM, &sa, NULL) == -1) {
- ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
- "sigaction(SIGALRM) failed");
- return NGX_ERROR;
- }
- itv.it_interval.tv_sec = ngx_timer_resolution / 1000;
- itv.it_interval.tv_usec = (ngx_timer_resolution % 1000) * 1000;
- itv.it_value.tv_sec = ngx_timer_resolution / 1000;
- itv.it_value.tv_usec = (ngx_timer_resolution % 1000 ) * 1000;
- if (setitimer(ITIMER_REAL, &itv, NULL) == -1) {
- ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
- "setitimer() failed");
- }
- }
- if (ngx_event_flags & NGX_USE_FD_EVENT) {
- struct rlimit rlmt;
- if (getrlimit(RLIMIT_NOFILE, &rlmt) == -1) {
- ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno,
- "getrlimit(RLIMIT_NOFILE) failed");
- return NGX_ERROR;
- }
- cycle->files_n = (ngx_uint_t) rlmt.rlim_cur;
- cycle->files = ngx_calloc(sizeof(ngx_connection_t *) * cycle->files_n,
- cycle->log);
- if (cycle->files == NULL) {
- return NGX_ERROR;
- }
- }
- #endif
- cycle->connections =
- ngx_alloc(sizeof(ngx_connection_t) * cycle->connection_n, cycle->log);
- if (cycle->connections == NULL) {
- return NGX_ERROR;
- }
- c = cycle->connections;
- cycle->read_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
- cycle->log);
- if (cycle->read_events == NULL) {
- return NGX_ERROR;
- }
- rev = cycle->read_events;
- for (i = 0; i < cycle->connection_n; i++) {
- rev[i].closed = 1;
- rev[i].instance = 1;
- }
- cycle->write_events = ngx_alloc(sizeof(ngx_event_t) * cycle->connection_n,
- cycle->log);
- if (cycle->write_events == NULL) {
- return NGX_ERROR;
- }
- wev = cycle->write_events;
- for (i = 0; i < cycle->connection_n; i++) {
- wev[i].closed = 1;
- }
- i = cycle->connection_n;
- next = NULL;
- do {
- i--;
- c[i].data = next;
- c[i].read = &cycle->read_events[i];
- c[i].write = &cycle->write_events[i];
- c[i].fd = (ngx_socket_t) -1;
- next = &c[i];
- #if (NGX_THREADS)
- c[i].lock = 0;
- #endif
- } while (i);
- cycle->free_connections = next;
- cycle->free_connection_n = cycle->connection_n;
-
- ls = cycle->listening.elts;
- for (i = 0; i < cycle->listening.nelts; i++) {
- c = ngx_get_connection(ls[i].fd, cycle->log);
- if (c == NULL) {
- return NGX_ERROR;
- }
- c->log = &ls[i].log;
- c->listening = &ls[i];
- ls[i].connection = c;
- rev = c->read;
- rev->log = c->log;
- rev->accept = 1;
- #if (NGX_HAVE_DEFERRED_ACCEPT)
- rev->deferred_accept = ls[i].deferred_accept;
- #endif
- if (!(ngx_event_flags & NGX_USE_IOCP_EVENT)) {
- if (ls[i].previous) {
-
- old = ls[i].previous->connection;
- if (ngx_del_event(old->read, NGX_READ_EVENT, NGX_CLOSE_EVENT)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- old->fd = (ngx_socket_t) -1;
- }
- }
- #if (NGX_WIN32)
- if (ngx_event_flags & NGX_USE_IOCP_EVENT) {
- ngx_iocp_conf_t *iocpcf;
- rev->handler = ngx_event_acceptex;
- if (ngx_use_accept_mutex) {
- continue;
- }
- if (ngx_add_event(rev, 0, NGX_IOCP_ACCEPT) == NGX_ERROR) {
- return NGX_ERROR;
- }
- ls[i].log.handler = ngx_acceptex_log_error;
- iocpcf = ngx_event_get_conf(cycle->conf_ctx, ngx_iocp_module);
- if (ngx_event_post_acceptex(&ls[i], iocpcf->post_acceptex)
- == NGX_ERROR)
- {
- return NGX_ERROR;
- }
- } else {
- rev->handler = ngx_event_accept;
- if (ngx_use_accept_mutex) {
- continue;
- }
- if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
- return NGX_ERROR;
- }
- }
- #else
- rev->handler = ngx_event_accept;
- if (ngx_use_accept_mutex) {
- continue;
- }
- if (ngx_event_flags & NGX_USE_RTSIG_EVENT) {
- if (ngx_add_conn(c) == NGX_ERROR) {
- return NGX_ERROR;
- }
- } else {
- if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
- return NGX_ERROR;
- }
- }
- #endif
- }
- return NGX_OK;
- }
- ngx_int_t
- ngx_send_lowat(ngx_connection_t *c, size_t lowat)
- {
- int sndlowat;
- #if (NGX_HAVE_LOWAT_EVENT)
- if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
- c->write->available = lowat;
- return NGX_OK;
- }
- #endif
- if (lowat == 0 || c->sndlowat) {
- return NGX_OK;
- }
- sndlowat = (int) lowat;
- if (setsockopt(c->fd, SOL_SOCKET, SO_SNDLOWAT,
- (const void *) &sndlowat, sizeof(int))
- == -1)
- {
- ngx_connection_error(c, ngx_socket_errno,
- "setsockopt(SO_SNDLOWAT) failed");
- return NGX_ERROR;
- }
- c->sndlowat = 1;
- return NGX_OK;
- }
- static char *
- ngx_events_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- char *rv;
- void ***ctx;
- ngx_uint_t i;
- ngx_conf_t pcf;
- ngx_event_module_t *m;
- if (*(void **) conf) {
- return "is duplicate";
- }
-
- ngx_event_max_module = 0;
- for (i = 0; ngx_modules[i]; i++) {
- if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
- continue;
- }
- ngx_modules[i]->ctx_index = ngx_event_max_module++;
- }
- ctx = ngx_pcalloc(cf->pool, sizeof(void *));
- if (ctx == NULL) {
- return NGX_CONF_ERROR;
- }
- *ctx = ngx_pcalloc(cf->pool, ngx_event_max_module * sizeof(void *));
- if (*ctx == NULL) {
- return NGX_CONF_ERROR;
- }
- *(void **) conf = ctx;
- for (i = 0; ngx_modules[i]; i++) {
- if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
- continue;
- }
- m = ngx_modules[i]->ctx;
- if (m->create_conf) {
- (*ctx)[ngx_modules[i]->ctx_index] = m->create_conf(cf->cycle);
- if ((*ctx)[ngx_modules[i]->ctx_index] == NULL) {
- return NGX_CONF_ERROR;
- }
- }
- }
- pcf = *cf;
- cf->ctx = ctx;
- cf->module_type = NGX_EVENT_MODULE;
- cf->cmd_type = NGX_EVENT_CONF;
- rv = ngx_conf_parse(cf, NULL);
- *cf = pcf;
- if (rv != NGX_CONF_OK)
- return rv;
- for (i = 0; ngx_modules[i]; i++) {
- if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
- continue;
- }
- m = ngx_modules[i]->ctx;
- if (m->init_conf) {
- rv = m->init_conf(cf->cycle, (*ctx)[ngx_modules[i]->ctx_index]);
- if (rv != NGX_CONF_OK) {
- return rv;
- }
- }
- }
- return NGX_CONF_OK;
- }
- static char *
- ngx_event_connections(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_event_conf_t *ecf = conf;
- ngx_str_t *value;
- if (ecf->connections != NGX_CONF_UNSET_UINT) {
- return "is duplicate";
- }
- if (ngx_strcmp(cmd->name.data, "connections") == 0) {
- ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
- "the \"connections\" directive is deprecated, "
- "use the \"worker_connections\" directive instead");
- }
- value = cf->args->elts;
- ecf->connections = ngx_atoi(value[1].data, value[1].len);
- if (ecf->connections == (ngx_uint_t) NGX_ERROR) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid number \"%V\"", &value[1]);
- return NGX_CONF_ERROR;
- }
- cf->cycle->connection_n = ecf->connections;
- return NGX_CONF_OK;
- }
- static char *
- ngx_event_use(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- ngx_event_conf_t *ecf = conf;
- ngx_int_t m;
- ngx_str_t *value;
- ngx_event_conf_t *old_ecf;
- ngx_event_module_t *module;
- if (ecf->use != NGX_CONF_UNSET_UINT) {
- return "is duplicate";
- }
- value = cf->args->elts;
- if (cf->cycle->old_cycle->conf_ctx) {
- old_ecf = ngx_event_get_conf(cf->cycle->old_cycle->conf_ctx,
- ngx_event_core_module);
- } else {
- old_ecf = NULL;
- }
- for (m = 0; ngx_modules[m]; m++) {
- if (ngx_modules[m]->type != NGX_EVENT_MODULE) {
- continue;
- }
- module = ngx_modules[m]->ctx;
- if (module->name->len == value[1].len) {
- if (ngx_strcmp(module->name->data, value[1].data) == 0) {
- ecf->use = ngx_modules[m]->ctx_index;
- ecf->name = module->name->data;
- if (ngx_process == NGX_PROCESS_SINGLE
- && old_ecf
- && old_ecf->use != ecf->use)
- {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "when the server runs without a master process "
- "the \"%V\" event type must be the same as "
- "in previous configuration - \"%s\" "
- "and it cannot be changed on the fly, "
- "to change it you need to stop server "
- "and start it again",
- &value[1], old_ecf->name);
- return NGX_CONF_ERROR;
- }
- return NGX_CONF_OK;
- }
- }
- }
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "invalid event type \"%V\"", &value[1]);
- return NGX_CONF_ERROR;
- }
- static char *
- ngx_event_debug_connection(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
- {
- #if (NGX_DEBUG)
- ngx_event_conf_t *ecf = conf;
- ngx_int_t rc;
- ngx_str_t *value;
- ngx_url_t u;
- ngx_cidr_t c, *cidr;
- ngx_uint_t i;
- struct sockaddr_in *sin;
- #if (NGX_HAVE_INET6)
- struct sockaddr_in6 *sin6;
- #endif
- value = cf->args->elts;
- #if (NGX_HAVE_UNIX_DOMAIN)
- if (ngx_strcmp(value[1].data, "unix:") == 0) {
- cidr = ngx_array_push(&ecf->debug_connection);
- if (cidr == NULL) {
- return NGX_CONF_ERROR;
- }
- cidr->family = AF_UNIX;
- return NGX_CONF_OK;
- }
- #endif
- rc = ngx_ptocidr(&value[1], &c);
- if (rc != NGX_ERROR) {
- if (rc == NGX_DONE) {
- ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
- "low address bits of %V are meaningless",
- &value[1]);
- }
- cidr = ngx_array_push(&ecf->debug_connection);
- if (cidr == NULL) {
- return NGX_CONF_ERROR;
- }
- *cidr = c;
- return NGX_CONF_OK;
- }
- ngx_memzero(&u, sizeof(ngx_url_t));
- u.host = value[1];
- if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
- if (u.err) {
- ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
- "%s in debug_connection \"%V\"",
- u.err, &u.host);
- }
- return NGX_CONF_ERROR;
- }
- cidr = ngx_array_push_n(&ecf->debug_connection, u.naddrs);
- if (cidr == NULL) {
- return NGX_CONF_ERROR;
- }
- ngx_memzero(cidr, u.naddrs * sizeof(ngx_cidr_t));
- for (i = 0; i < u.naddrs; i++) {
- cidr[i].family = u.addrs[i].sockaddr->sa_family;
- switch (cidr[i].family) {
- #if (NGX_HAVE_INET6)
- case AF_INET6:
- sin6 = (struct sockaddr_in6 *) u.addrs[i].sockaddr;
- cidr[i].u.in6.addr = sin6->sin6_addr;
- ngx_memset(cidr[i].u.in6.mask.s6_addr, 0xff, 16);
- break;
- #endif
- default:
- sin = (struct sockaddr_in *) u.addrs[i].sockaddr;
- cidr[i].u.in.addr = sin->sin_addr.s_addr;
- cidr[i].u.in.mask = 0xffffffff;
- break;
- }
- }
- #else
- ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
- "\"debug_connection\" is ignored, you need to rebuild "
- "nginx using --with-debug option to enable it");
- #endif
- return NGX_CONF_OK;
- }
- static void *
- ngx_event_core_create_conf(ngx_cycle_t *cycle)
- {
- ngx_event_conf_t *ecf;
- ecf = ngx_palloc(cycle->pool, sizeof(ngx_event_conf_t));
- if (ecf == NULL) {
- return NULL;
- }
- ecf->connections = NGX_CONF_UNSET_UINT;
- ecf->use = NGX_CONF_UNSET_UINT;
- ecf->multi_accept = NGX_CONF_UNSET;
- ecf->accept_mutex = NGX_CONF_UNSET;
- ecf->accept_mutex_delay = NGX_CONF_UNSET_MSEC;
- ecf->name = (void *) NGX_CONF_UNSET;
- #if (NGX_DEBUG)
- if (ngx_array_init(&ecf->debug_connection, cycle->pool, 4,
- sizeof(ngx_cidr_t)) == NGX_ERROR)
- {
- return NULL;
- }
- #endif
- return ecf;
- }
- static char *
- ngx_event_core_init_conf(ngx_cycle_t *cycle, void *conf)
- {
- ngx_event_conf_t *ecf = conf;
- #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
- int fd;
- #endif
- #if (NGX_HAVE_RTSIG)
- ngx_uint_t rtsig;
- ngx_core_conf_t *ccf;
- #endif
- ngx_int_t i;
- ngx_module_t *module;
- ngx_event_module_t *event_module;
- module = NULL;
- #if (NGX_HAVE_EPOLL) && !(NGX_TEST_BUILD_EPOLL)
- fd = epoll_create(100);
- if (fd != -1) {
- (void) close(fd);
- module = &ngx_epoll_module;
- } else if (ngx_errno != NGX_ENOSYS) {
- module = &ngx_epoll_module;
- }
- #endif
- #if (NGX_HAVE_RTSIG)
- if (module == NULL) {
- module = &ngx_rtsig_module;
- rtsig = 1;
- } else {
- rtsig = 0;
- }
- #endif
- #if (NGX_HAVE_DEVPOLL)
- module = &ngx_devpoll_module;
- #endif
- #if (NGX_HAVE_KQUEUE)
- module = &ngx_kqueue_module;
- #endif
- #if (NGX_HAVE_SELECT)
- if (module == NULL) {
- module = &ngx_select_module;
- }
- #endif
- if (module == NULL) {
- for (i = 0; ngx_modules[i]; i++) {
- if (ngx_modules[i]->type != NGX_EVENT_MODULE) {
- continue;
- }
- event_module = ngx_modules[i]->ctx;
- if (ngx_strcmp(event_module->name->data, event_core_name.data) == 0)
- {
- continue;
- }
- module = ngx_modules[i];
- break;
- }
- }
- if (module == NULL) {
- ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "no events module found");
- return NGX_CONF_ERROR;
- }
- ngx_conf_init_uint_value(ecf->connections, DEFAULT_CONNECTIONS);
- cycle->connection_n = ecf->connections;
- ngx_conf_init_uint_value(ecf->use, module->ctx_index);
- event_module = module->ctx;
- ngx_conf_init_ptr_value(ecf->name, event_module->name->data);
- ngx_conf_init_value(ecf->multi_accept, 0);
- ngx_conf_init_value(ecf->accept_mutex, 1);
- ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500);
- #if (NGX_HAVE_RTSIG)
- if (!rtsig) {
- return NGX_CONF_OK;
- }
- if (ecf->accept_mutex) {
- return NGX_CONF_OK;
- }
- ccf = (ngx_core_conf_t *) ngx_get_conf(cycle->conf_ctx, ngx_core_module);
- if (ccf->worker_processes == 0) {
- return NGX_CONF_OK;
- }
- ngx_log_error(NGX_LOG_EMERG, cycle->log, 0,
- "the \"rtsig\" method requires \"accept_mutex\" to be on");
- return NGX_CONF_ERROR;
- #else
- return NGX_CONF_OK;
- #endif
- }
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