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view src/event/ngx_event_busy_lock.h @ 378:fc497c1dfb7c NGINX_0_6_33

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nginx 0.6.33 *) Feature: now nginx returns the 405 status code for POST method requesting a static file only if the file exists. *) Workaround: compatibility with glibc 2.3. Thanks to Eric Benson and Maxim Dounin. *) Bugfix: the resolver did not understand big DNS responses. Thanks to Zyb. *) Bugfix: in HTTPS mode requests might fail with the "bad write retry" error. *) Bugfix: the ngx_http_charset_module did not understand quoted charset name received from backend. *) Bugfix: if the "max_fails=0" parameter was used in upstream with several servers, then a worker process exited on a SIGFPE signal. Thanks to Maxim Dounin. *) Bugfix: the $r->header_in() method did not return value of the "Host", "User-Agent", and "Connection" request header lines; the bug had appeared in 0.6.32. *) Bugfix: a full response was returned for request method HEAD while redirection via an "error_page" directive. *) Bugfix: if a directory has search only rights and the first index file was absent, then nginx returned the 500 status code. *) Bugfix: of recursive error_page for 500 status code.
author Igor Sysoev <http://sysoev.ru>
date Thu, 20 Nov 2008 00:00:00 +0300
parents 10cc350ed8a1
children
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/*
 * 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                  cacheable;

    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_cacheable(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_ */