Mercurial > hg > nginx-vendor-current
view src/core/ngx_shmtx.h @ 466:9eda3153223b NGINX_0_7_45
nginx 0.7.45
*) Change: now the "proxy_cache" and the "proxy_cache_valid" can be set
on different levels.
*) Change: the "clean_time" parameter of the "proxy_cache_path"
directive is canceled.
*) Feature: the "max_size" parameter of the "proxy_cache_path"
directive.
*) Feature: the ngx_http_fastcgi_module preliminary cache support.
*) Feature: now on shared memory allocation errors directive and zone
names are logged.
*) Bugfix: the directive "add_header last-modified ''" did not delete a
"Last-Modified" response header line; the bug had appeared in 0.7.44.
*) Bugfix: a relative path in the "auth_basic_user_file" directive
given without variables did not work; the bug had appeared in
0.7.44.
Thanks to Jerome Loyet.
*) Bugfix: in an "alias" directive given using variables without
references to captures of regular expressions; the bug had appeared
in 0.7.42.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 30 Mar 2009 00:00:00 +0400 |
parents | bb941a2996a6 |
children | d4da38525468 |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_SHMTX_H_INCLUDED_ #define _NGX_SHMTX_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef struct { #if (NGX_HAVE_ATOMIC_OPS) ngx_atomic_t *lock; #else ngx_fd_t fd; u_char *name; #endif } ngx_shmtx_t; ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name); #if (NGX_HAVE_ATOMIC_OPS) static ngx_inline ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx) { return (*mtx->lock == 0 && ngx_atomic_cmp_set(mtx->lock, 0, ngx_pid)); } #define ngx_shmtx_lock(mtx) ngx_spinlock((mtx)->lock, ngx_pid, 1024) #define ngx_shmtx_unlock(mtx) (void) ngx_atomic_cmp_set((mtx)->lock, ngx_pid, 0) #define ngx_shmtx_destory(mtx) #else static ngx_inline ngx_uint_t ngx_shmtx_trylock(ngx_shmtx_t *mtx) { ngx_err_t err; err = ngx_trylock_fd(mtx->fd); if (err == 0) { return 1; } if (err == NGX_EAGAIN) { return 0; } #if __osf__ /* Tru64 UNIX */ if (err == NGX_EACCESS) { return 0; } #endif ngx_log_abort(err, ngx_trylock_fd_n " %s failed", mtx->name); return 0; } static ngx_inline void ngx_shmtx_lock(ngx_shmtx_t *mtx) { ngx_err_t err; err = ngx_lock_fd(mtx->fd); if (err == 0) { return; } ngx_log_abort(err, ngx_lock_fd_n " %s failed", mtx->name); } static ngx_inline void ngx_shmtx_unlock(ngx_shmtx_t *mtx) { ngx_err_t err; err = ngx_unlock_fd(mtx->fd); if (err == 0) { return; } ngx_log_abort(err, ngx_unlock_fd_n " %s failed", mtx->name); } void ngx_shmtx_destory(ngx_shmtx_t *mtx); #endif #endif /* _NGX_SHMTX_H_INCLUDED_ */