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view src/event/ngx_event_busy_lock.h @ 665:5fd7a5e99047 release-0.3.54

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nginx-0.3.54-RELEASE import *) Feature: nginx now logs the subrequest information to the error log. *) Feature: the "proxy_next_upstream", "fastcgi_next_upstream", and "memcached_next_upstream" directives support the "off" parameter. *) Feature: the "debug_connection" directive supports the CIDR address form. *) Bugfix: if a response of proxied server or FastCGI server was converted from UTF-8 or back, then it may be transferred incomplete. *) Bugfix: the $upstream_response_time variable had the time of the first request to a backend only. *) Bugfix: nginx could not be built on amd64 platform; the bug had appeared in 0.3.53.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 11 Jul 2006 13:20:19 +0000
parents 9c2f3ed7a247
children 4c43e25d11ea
line wrap: on
line source


/*
 * Copyright (C) Igor Sysoev
 */


#ifndef _NGX_EVENT_BUSY_LOCK_H_INCLUDED_
#define _NGX_EVENT_BUSY_LOCK_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>

typedef struct ngx_event_busy_lock_ctx_s  ngx_event_busy_lock_ctx_t;

struct ngx_event_busy_lock_ctx_s {
    ngx_event_t                *event;
    ngx_event_handler_pt        handler;
    void                       *data;
    ngx_msec_t                  timer;

    unsigned                    locked:1;
    unsigned                    waiting:1;
    unsigned                    cache_updated:1;

    char                       *md5;
    ngx_int_t                   slot;

    ngx_event_busy_lock_ctx_t  *next;
};


typedef struct {
    u_char                     *md5_mask;
    char                       *md5;
    ngx_uint_t                  cachable;

    ngx_uint_t                  busy;
    ngx_uint_t                  max_busy;

    ngx_uint_t                  waiting;
    ngx_uint_t                  max_waiting;

    ngx_event_busy_lock_ctx_t  *events;
    ngx_event_busy_lock_ctx_t  *last;

#if (NGX_THREADS)
    ngx_mutex_t                *mutex;
#endif
} ngx_event_busy_lock_t;


ngx_int_t ngx_event_busy_lock(ngx_event_busy_lock_t *bl,
    ngx_event_busy_lock_ctx_t *ctx);
ngx_int_t ngx_event_busy_lock_cachable(ngx_event_busy_lock_t *bl,
    ngx_event_busy_lock_ctx_t *ctx);
void ngx_event_busy_unlock(ngx_event_busy_lock_t *bl,
    ngx_event_busy_lock_ctx_t *ctx);
void ngx_event_busy_lock_cancel(ngx_event_busy_lock_t *bl,
    ngx_event_busy_lock_ctx_t *ctx);


#endif /* _NGX_EVENT_BUSY_LOCK_H_INCLUDED_ */