diff options
| author |   Yu Ping <ping.yu@intel.com> | 2020-02-21 22:36:20 +0800 |
|---|---|---|
| committer |   Florin Coras <fcoras@cisco.com> | 2020-02-22 00:30:48 +0000 |
| commit | 54346b61f91008c5098243b588f184ad92ad29c9 (patch) | |
| tree | 60116fad568970aee2538a081de0560b0487db8c /nginx/src/core/ngx_shmtx.h | |
| parent | 4b0794f139564682503fcd2f59c7bcd3238e6633 (diff) | |
initial version of VSAP
Signed-off-by: Yu Ping <ping.yu@intel.com>
Change-Id: I04d9150f0c7607ba20de9096b452476eff1622fc
Diffstat (limited to 'nginx/src/core/ngx_shmtx.h')
| -rw-r--r-- | nginx/src/core/ngx_shmtx.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/nginx/src/core/ngx_shmtx.h b/nginx/src/core/ngx_shmtx.h new file mode 100644 index 0000000..91e11be --- /dev/null +++ b/nginx/src/core/ngx_shmtx.h @@ -0,0 +1,49 @@ + +/* + * 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_ */ |