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view src/core/ngx_shmtx.h @ 5091:d3e256c67d6d

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SSL: do not treat SSL handshake as request. The request object will not be created until SSL handshake is complete. This simplifies adding another connection handler that does not need request object right after handshake (e.g., SPDY). There are also a few more intentional effects: - the "client_header_buffer_size" directive will be taken from the server configuration that was negotiated by SNI; - SSL handshake errors and timeouts are not logged into access log as bad requests; - ngx_ssl_create_connection() is not called until the first byte of ClientHello message was received. This also decreases memory consumption if plain HTTP request is sent to SSL socket.
author Valentin Bartenev <vbart@nginx.com>
date Wed, 27 Feb 2013 17:21:21 +0000
parents 512c741fa841
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_SHMTX_H_INCLUDED_
#define _NGX_SHMTX_H_INCLUDED_


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


typedef struct {
    ngx_atomic_t   lock;
#if (NGX_HAVE_POSIX_SEM)
    ngx_atomic_t   wait;
#endif
} ngx_shmtx_sh_t;


typedef struct {
#if (NGX_HAVE_ATOMIC_OPS)
    ngx_atomic_t  *lock;
#if (NGX_HAVE_POSIX_SEM)
    ngx_atomic_t  *wait;
    ngx_uint_t     semaphore;
    sem_t          sem;
#endif
#else
    ngx_fd_t       fd;
    u_char        *name;
#endif
    ngx_uint_t     spin;
} ngx_shmtx_t;


ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, ngx_shmtx_sh_t *addr,
    u_char *name);
void ngx_shmtx_destroy(ngx_shmtx_t *mtx);
ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx);
void ngx_shmtx_lock(ngx_shmtx_t *mtx);
void ngx_shmtx_unlock(ngx_shmtx_t *mtx);
ngx_uint_t ngx_shmtx_force_unlock(ngx_shmtx_t *mtx, ngx_pid_t pid);


#endif /* _NGX_SHMTX_H_INCLUDED_ */