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view src/http/ngx_http_busy_lock.h @ 5089:903f2a5d86a5

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SNI: reuse selected configuration for all requests in a connection. Previously, only the first request in a connection was assigned the configuration selected by SNI. All subsequent requests initially used the default server's configuration, ignoring SNI, which was wrong. Now all subsequent requests in a connection will initially use the configuration selected by SNI. This is done by storing a pointer to configuration in http connection object. It points to default server's configuration initially, but changed upon receipt of SNI. (The request's configuration can be further refined when parsing the request line and Host: header.) This change was not made specific to SNI as it also allows slightly faster access to configuration without the request object.
author Valentin Bartenev <vbart@nginx.com>
date Wed, 27 Feb 2013 17:12:48 +0000
parents d620f497c50f
children
line wrap: on
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_HTTP_BUSY_LOCK_H_INCLUDED_
#define _NGX_HTTP_BUSY_LOCK_H_INCLUDED_


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


typedef struct {
    u_char             *md5_mask;
    char               *md5;
    int                 cacheable;

    int                 busy;
    int                 max_busy;

    int                 waiting;
    int                 max_waiting;

    time_t              timeout;

    ngx_event_mutex_t  *mutex;
} ngx_http_busy_lock_t;


typedef struct {
    time_t         time;
    ngx_event_t   *event;
    void         (*event_handler)(ngx_event_t *ev);
    u_char        *md5;
    int            slot;
} ngx_http_busy_lock_ctx_t;


int ngx_http_busy_lock(ngx_http_busy_lock_t *bl, ngx_http_busy_lock_ctx_t *bc);
int ngx_http_busy_lock_cacheable(ngx_http_busy_lock_t *bl,
                                 ngx_http_busy_lock_ctx_t *bc, int lock);
void ngx_http_busy_unlock(ngx_http_busy_lock_t *bl,
                          ngx_http_busy_lock_ctx_t *bc);

char *ngx_http_set_busy_lock_slot(ngx_conf_t *cf, ngx_command_t *cmd,
                                  void *conf);


#endif /* _NGX_HTTP_BUSY_LOCK_H_INCLUDED_ */