Mercurial > hg > nginx
view src/event/ngx_event_timer.c @ 485:4ebe09b07e30 release-0.1.17
nginx-0.1.17-RELEASE import
*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
Now it is possible to redirect, to return the error codes, to check
the variables and referrers. The directives can be used inside
locations. The redirect directive was canceled.
*) Feature: the ngx_http_geo_module.
*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
*) Bugfix: the location configuration with "=" modifier may be used in
another location.
*) Bugfix: the correct content type was set only for requests that use
small caps letters in extension.
*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
location, and access was denied, and the error was redirected to a
static page, then the segmentation fault occurred.
*) Bugfix: if in a proxied "Location" header was a relative URL, then a
host name and a slash were added to them; the bug had appeared in
0.1.14.
*) Bugfix: the system error message was not logged on Linux.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 03 Feb 2005 19:33:37 +0000 |
parents | a88a3e4e158f |
children | 975f62e77f02 |
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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) if (!(ngx_event_timer_mutex = ngx_mutex_init(log, 0))) { 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); }