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view src/event/ngx_event_posted.h @ 5115:a29c574d61fa

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Status: introduced the "ngx_stat_waiting" counter. And corresponding variable $connections_waiting was added. Previously, waiting connections were counted as the difference between active connections and the sum of reading and writing connections. That made it impossible to count more than one request in one connection as reading or writing (as is the case for SPDY). Also, we no longer count connections in handshake state as waiting.
author Valentin Bartenev <vbart@nginx.com>
date Fri, 15 Mar 2013 20:00:49 +0000
parents d620f497c50f
children 3377f9459e99
line wrap: on
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#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_ */