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view src/event/ngx_event_busy_lock.h @ 497:d7c90bb5ce83 release-0.1.23

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nginx-0.1.23-RELEASE import *) Feature: the ngx_http_ssi_filter_module and the ssi, ssi_silent_errors, and ssi_min_file_chunk directives. The 'echo var="HTTP_..." default=""' and 'echo var="REMOTE_ADDR"' commands are supported. *) Feature: the %request_time log parameter. *) Feature: if the request has no the "Host" header line, then the "proxy_preserve_host" directive set this header line to the first server name of the "server_name" directive. *) Bugfix: nginx could not be built on platforms different from i386, amd64, sparc, and ppc; the bug had appeared in 0.1.22. *) Bugfix: the ngx_http_autoindex_module now shows the information not about the symlink, but about file or directory it points to. *) Bugfix: the %apache_length parameter logged the negative length of the response header if the no response was transferred to a client.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 01 Mar 2005 15:20:36 +0000
parents 42d11f017717
children 9c2f3ed7a247
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);
ngx_int_t ngx_event_busy_unlock(ngx_event_busy_lock_t *bl,
                                ngx_event_busy_lock_ctx_t *ctx);
ngx_int_t 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_ */