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Annotation of embedaddon/nginx/src/core/ngx_shmtx.h, revision 1.1

1.1     ! misho       1: 
        !             2: /*
        !             3:  * Copyright (C) Igor Sysoev
        !             4:  * Copyright (C) Nginx, Inc.
        !             5:  */
        !             6: 
        !             7: 
        !             8: #ifndef _NGX_SHMTX_H_INCLUDED_
        !             9: #define _NGX_SHMTX_H_INCLUDED_
        !            10: 
        !            11: 
        !            12: #include <ngx_config.h>
        !            13: #include <ngx_core.h>
        !            14: 
        !            15: 
        !            16: typedef struct {
        !            17:     ngx_atomic_t   lock;
        !            18: #if (NGX_HAVE_POSIX_SEM)
        !            19:     ngx_atomic_t   wait;
        !            20: #endif
        !            21: } ngx_shmtx_sh_t;
        !            22: 
        !            23: 
        !            24: typedef struct {
        !            25: #if (NGX_HAVE_ATOMIC_OPS)
        !            26:     ngx_atomic_t  *lock;
        !            27: #if (NGX_HAVE_POSIX_SEM)
        !            28:     ngx_atomic_t  *wait;
        !            29:     ngx_uint_t     semaphore;
        !            30:     sem_t          sem;
        !            31: #endif
        !            32: #else
        !            33:     ngx_fd_t       fd;
        !            34:     u_char        *name;
        !            35: #endif
        !            36:     ngx_uint_t     spin;
        !            37: } ngx_shmtx_t;
        !            38: 
        !            39: 
        !            40: ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, ngx_shmtx_sh_t *addr,
        !            41:     u_char *name);
        !            42: void ngx_shmtx_destroy(ngx_shmtx_t *mtx);
        !            43: ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx);
        !            44: void ngx_shmtx_lock(ngx_shmtx_t *mtx);
        !            45: void ngx_shmtx_unlock(ngx_shmtx_t *mtx);
        !            46: ngx_uint_t ngx_shmtx_force_unlock(ngx_shmtx_t *mtx, ngx_pid_t pid);
        !            47: 
        !            48: 
        !            49: #endif /* _NGX_SHMTX_H_INCLUDED_ */