view src/core/ngx_shmtx.h @ 624:d4da38525468 NGINX_1_0_2

nginx 1.0.2 *) Feature: now shared zones and caches use POSIX semaphores. *) Bugfix: in the "rotate" parameter of the "image_filter" directive. Thanks to Adam Bocim. *) Bugfix: nginx could not be built on Solaris; the bug had appeared in 1.0.1.
author Igor Sysoev <>
date Tue, 10 May 2011 00:00:00 +0400
parents bb941a2996a6
children 4d05413aebad
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 * Copyright (C) Igor Sysoev


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

typedef struct {
    ngx_atomic_t  *lock;
    ngx_uint_t     semaphore;
    sem_t          sem;
    ngx_fd_t       fd;
    u_char        *name;
    ngx_uint_t     spin;
} ngx_shmtx_t;

ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name);
void ngx_shmtx_destory(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);

#endif /* _NGX_SHMTX_H_INCLUDED_ */