Mercurial > hg > nginx
view src/event/ngx_event_posted.h @ 4233:aae172db7ac8
Event pipe: reduced number of file buffers used.
If possible we now just extend already present file buffer in p->out chain
instead of keeping ngx_buf_t for each buffer we've flushed to disk. This
saves about 120 bytes of memory per buffer flushed to disk, and resolves
high CPU usage observed in edge cases (due to coalescing these buffers on
send).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 31 Oct 2011 09:54:55 +0000 |
parents | 9c2f3ed7a247 |
children | d620f497c50f |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_EVENT_POSTED_H_INCLUDED_ #define _NGX_EVENT_POSTED_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #if (NGX_THREADS) extern ngx_mutex_t *ngx_posted_events_mutex; #endif #define ngx_locked_post_event(ev, queue) \ \ if (ev->prev == NULL) { \ ev->next = (ngx_event_t *) *queue; \ ev->prev = (ngx_event_t **) queue; \ *queue = ev; \ \ if (ev->next) { \ ev->next->prev = &ev->next; \ } \ \ ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, "post event %p", ev); \ \ } else { \ ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, \ "update posted event %p", ev); \ } #define ngx_post_event(ev, queue) \ \ ngx_mutex_lock(ngx_posted_events_mutex); \ ngx_locked_post_event(ev, queue); \ ngx_mutex_unlock(ngx_posted_events_mutex); #define ngx_delete_posted_event(ev) \ \ *(ev->prev) = ev->next; \ \ if (ev->next) { \ ev->next->prev = ev->prev; \ } \ \ ev->prev = NULL; \ ngx_log_debug1(NGX_LOG_DEBUG_CORE, ev->log, 0, \ "delete posted event %p", ev); void ngx_event_process_posted(ngx_cycle_t *cycle, ngx_thread_volatile ngx_event_t **posted); void ngx_wakeup_worker_thread(ngx_cycle_t *cycle); #if (NGX_THREADS) ngx_int_t ngx_event_thread_process_posted(ngx_cycle_t *cycle); #endif extern ngx_thread_volatile ngx_event_t *ngx_posted_accept_events; extern ngx_thread_volatile ngx_event_t *ngx_posted_events; #endif /* _NGX_EVENT_POSTED_H_INCLUDED_ */