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_ */
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