Mercurial > hg > nginx-vendor-0-7
view src/event/ngx_event_timer.c @ 50:72eb30262aac NGINX_0_1_25
nginx 0.1.25
*) Bugfix: nginx did run on Linux parisc.
*) Feature: nginx now does not start under FreeBSD if the sysctl
kern.ipc.somaxconn value is too big.
*) Bugfix: if a request was internally redirected by the
ngx_http_index_module module to the ngx_http_proxy_module or
ngx_http_fastcgi_module modules, then the index file was not closed
after request completion.
*) Feature: the "proxy_pass" can be used in location with regular
expression.
*) Feature: the ngx_http_rewrite_filter_module module supports the
condition like "if ($HTTP_USER_AGENT ~ MSIE)".
*) Bugfix: nginx started too slow if the large number of addresses and
text values were used in the "geo" directive.
*) Change: a variable name must be declared as "$name" in the "geo"
directive. The previous variant without "$" is still supported, but
will be removed soon.
*) Feature: the "%{VARIABLE}v" logging parameter.
*) Feature: the "set $name value" directive.
*) Bugfix: gcc 4.0 compatibility.
*) Feature: the --with-openssl-opt=OPTIONS autoconfiguration directive.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Sat, 19 Mar 2005 00:00:00 +0300 |
parents | 41ccba1aba45 |
children | b55cbf18157e |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #if (NGX_THREADS) ngx_mutex_t *ngx_event_timer_mutex; #endif ngx_thread_volatile ngx_rbtree_t *ngx_event_timer_rbtree; ngx_rbtree_t ngx_event_timer_sentinel; ngx_int_t ngx_event_timer_init(ngx_log_t *log) { if (ngx_event_timer_rbtree) { #if (NGX_THREADS) ngx_event_timer_mutex->log = log; #endif return NGX_OK; } ngx_event_timer_rbtree = &ngx_event_timer_sentinel; #if (NGX_THREADS) ngx_event_timer_mutex = ngx_mutex_init(log, 0); if (ngx_event_timer_mutex == NULL) { return NGX_ERROR; } #endif return NGX_OK; } ngx_msec_t ngx_event_find_timer(void) { ngx_msec_t timer; ngx_rbtree_t *node; if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { return NGX_TIMER_INFINITE; } if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return NGX_TIMER_ERROR; } node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree, &ngx_event_timer_sentinel); ngx_mutex_unlock(ngx_event_timer_mutex); timer = (ngx_msec_t) (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION); #if 0 (node->key * NGX_TIMER_RESOLUTION - ngx_elapsed_msec); #endif return timer > 0 ? timer: 0 ; } void ngx_event_expire_timers(ngx_msec_t timer) { ngx_event_t *ev; ngx_rbtree_t *node; if (timer < 0) { /* avoid the endless loop if the time goes backward for some reason */ timer = 0; } for ( ;; ) { if (ngx_event_timer_rbtree == &ngx_event_timer_sentinel) { return; } if (ngx_mutex_lock(ngx_event_timer_mutex) == NGX_ERROR) { return; } node = ngx_rbtree_min((ngx_rbtree_t *) ngx_event_timer_rbtree, &ngx_event_timer_sentinel); if (node->key <= (ngx_msec_t) (ngx_old_elapsed_msec + timer) / NGX_TIMER_RESOLUTION) { ev = (ngx_event_t *) ((char *) node - offsetof(ngx_event_t, rbtree_key)); #if (NGX_THREADS) if (ngx_threaded && ngx_trylock(ev->lock) == 0) { /* * We can not change the timer of the event that is been * handling by another thread. And we can not easy walk * the rbtree to find a next expired timer so we exit the loop. * However it should be rare case when the event that is * been handling has expired timer. */ ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event %p is busy in expire timers", ev); break; } #endif ngx_log_debug2(NGX_LOG_DEBUG_EVENT, ev->log, 0, "event timer del: %d: %i", ngx_event_ident(ev->data), ev->rbtree_key); ngx_rbtree_delete((ngx_rbtree_t **) &ngx_event_timer_rbtree, &ngx_event_timer_sentinel, (ngx_rbtree_t *) &ev->rbtree_key); ngx_mutex_unlock(ngx_event_timer_mutex); #if (NGX_DEBUG) ev->rbtree_left = NULL; ev->rbtree_right = NULL; ev->rbtree_parent = NULL; #endif ev->timer_set = 0; #if (NGX_THREADS) if (ngx_threaded) { if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) { return; } ev->posted_timedout = 1; ngx_post_event(ev); ngx_mutex_unlock(ngx_posted_events_mutex); ngx_unlock(ev->lock); continue; } #endif ev->timedout = 1; ev->event_handler(ev); continue; } break; } ngx_mutex_unlock(ngx_event_timer_mutex); }