diff options
Diffstat (limited to 'app/nginx/src/event/ngx_event.c')
| -rw-r--r-- | app/nginx/src/event/ngx_event.c | 1290 |
1 files changed, 0 insertions, 1290 deletions
diff --git a/app/nginx/src/event/ngx_event.c b/app/nginx/src/event/ngx_event.c deleted file mode 100644 index 57af813..0000000 --- a/app/nginx/src/event/ngx_event.c +++ /dev/null @@ -1,1290 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#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_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) - -static ngx_atomic_t ngx_stat_accepted0; -ngx_atomic_t *ngx_stat_accepted = &ngx_stat_accepted0; -static ngx_atomic_t ngx_stat_handled0; -ngx_atomic_t *ngx_stat_handled = &ngx_stat_handled0; -static ngx_atomic_t ngx_stat_requests0; -ngx_atomic_t *ngx_stat_requests = &ngx_stat_requests0; -static ngx_atomic_t ngx_stat_active0; -ngx_atomic_t *ngx_stat_active = &ngx_stat_active0; -static ngx_atomic_t ngx_stat_reading0; -ngx_atomic_t *ngx_stat_reading = &ngx_stat_reading0; -static ngx_atomic_t ngx_stat_writing0; -ngx_atomic_t *ngx_stat_writing = &ngx_stat_writing0; -static 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, /* module context */ - ngx_events_commands, /* module directives */ - NGX_CORE_MODULE, /* module type */ - NULL, /* init master */ - NULL, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - 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("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 -}; - - -static ngx_event_module_t ngx_event_core_module_ctx = { - &event_core_name, - ngx_event_core_create_conf, /* create configuration */ - ngx_event_core_init_conf, /* init configuration */ - - { 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, /* module context */ - ngx_event_core_commands, /* module directives */ - NGX_EVENT_MODULE, /* module type */ - NULL, /* init master */ - ngx_event_module_init, /* init module */ - ngx_event_process_init, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - 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_WIN32) - - /* handle signals from master in case of network inactivity */ - - 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) { - - /* kqueue, epoll */ - - 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) { - - /* select, poll, /dev/poll */ - - 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) { - - /* event ports */ - - 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; - } - } - - /* iocp */ - - 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) { - - /* kqueue, epoll */ - - 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) { - - /* select, poll, /dev/poll */ - - 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) { - - /* event ports */ - - 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; - } - } - - /* iocp */ - - 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 /* !(NGX_WIN32) */ - - - if (ccf->master == 0) { - return NGX_OK; - } - - if (ngx_accept_mutex_ptr) { - return NGX_OK; - } - - - /* cl should be equal to or greater than cache line size */ - - cl = 128; - - size = cl /* ngx_accept_mutex */ - + cl /* ngx_connection_counter */ - + cl; /* ngx_temp_number */ - -#if (NGX_STAT_STUB) - - size += cl /* ngx_stat_accepted */ - + cl /* ngx_stat_handled */ - + cl /* ngx_stat_requests */ - + cl /* ngx_stat_active */ - + cl /* ngx_stat_reading */ - + cl /* ngx_stat_writing */ - + cl; /* ngx_stat_waiting */ - -#endif - - shm.size = size; - ngx_str_set(&shm.name, "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, %uA", - 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) - - /* - * disable accept mutex on win32 as it may cause deadlock if - * grabbed by a process which can't accept connections - */ - - 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; cycle->modules[m]; m++) { - if (cycle->modules[m]->type != NGX_EVENT_MODULE) { - continue; - } - - if (cycle->modules[m]->ctx_index != ecf->use) { - continue; - } - - module = cycle->modules[m]->ctx; - - if (module->actions.init(cycle, ngx_timer_resolution) != NGX_OK) { - /* fatal */ - 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; - } - } - -#else - - if (ngx_timer_resolution && !(ngx_event_flags & NGX_USE_TIMER_EVENT)) { - ngx_log_error(NGX_LOG_WARN, cycle->log, 0, - "the \"timer_resolution\" directive is not supported " - "with the configured event method, ignored"); - ngx_timer_resolution = 0; - } - -#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]; - } while (i); - - cycle->free_connections = next; - cycle->free_connection_n = cycle->connection_n; - - /* for each listening socket */ - - ls = cycle->listening.elts; - for (i = 0; i < cycle->listening.nelts; i++) { - -#if (NGX_HAVE_REUSEPORT) - if (ls[i].reuseport && ls[i].worker != ngx_worker) { - continue; - } -#endif - - c = ngx_get_connection(ls[i].fd, cycle->log); - - if (c == NULL) { - return NGX_ERROR; - } - - c->type = ls[i].type; - 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) { - - /* - * delete the old accept events that were bound to - * the old cycle read events array - */ - - 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 = (c->type == SOCK_STREAM) ? ngx_event_accept - : ngx_event_recvmsg; - -#if (NGX_HAVE_REUSEPORT) - - if (ls[i].reuseport) { - if (ngx_add_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) { - return NGX_ERROR; - } - - continue; - } - -#endif - - if (ngx_use_accept_mutex) { - continue; - } - -#if (NGX_HAVE_EPOLLEXCLUSIVE) - - if ((ngx_event_flags & NGX_USE_EPOLL_EVENT) - && ccf->worker_processes > 1) - { - if (ngx_add_event(rev, NGX_READ_EVENT, NGX_EXCLUSIVE_EVENT) - == NGX_ERROR) - { - return NGX_ERROR; - } - - continue; - } - -#endif - - 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"; - } - - /* count the number of the event modules and set up their indices */ - - ngx_event_max_module = ngx_count_modules(cf->cycle, NGX_EVENT_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; cf->cycle->modules[i]; i++) { - if (cf->cycle->modules[i]->type != NGX_EVENT_MODULE) { - continue; - } - - m = cf->cycle->modules[i]->ctx; - - if (m->create_conf) { - (*ctx)[cf->cycle->modules[i]->ctx_index] = - m->create_conf(cf->cycle); - if ((*ctx)[cf->cycle->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; cf->cycle->modules[i]; i++) { - if (cf->cycle->modules[i]->type != NGX_EVENT_MODULE) { - continue; - } - - m = cf->cycle->modules[i]->ctx; - - if (m->init_conf) { - rv = m->init_conf(cf->cycle, - (*ctx)[cf->cycle->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"; - } - - 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; cf->cycle->modules[m]; m++) { - if (cf->cycle->modules[m]->type != NGX_EVENT_MODULE) { - continue; - } - - module = cf->cycle->modules[m]->ctx; - if (module->name->len == value[1].len) { - if (ngx_strcmp(module->name->data, value[1].data) == 0) { - ecf->use = cf->cycle->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: /* AF_INET */ - 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 - 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_DEVPOLL) && !(NGX_TEST_BUILD_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; cycle->modules[i]; i++) { - - if (cycle->modules[i]->type != NGX_EVENT_MODULE) { - continue; - } - - event_module = cycle->modules[i]->ctx; - - if (ngx_strcmp(event_module->name->data, event_core_name.data) == 0) - { - continue; - } - - module = cycle->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, 0); - ngx_conf_init_msec_value(ecf->accept_mutex_delay, 500); - - return NGX_CONF_OK; -} |