Mercurial > hg > nginx-vendor-current
view src/core/ngx_shmtx.h @ 416:b4f69f2ef02c NGINX_0_7_20
nginx 0.7.20
*) Changes in the ngx_http_gzip_filter_module.
*) Feature: the ngx_http_limit_req_module.
*) Bugfix: worker processes might exit on a SIGBUS signal on sparc and
ppc platforms; the bug had appeared in 0.7.3.
Thanks to Maxim Dounin.
*) Bugfix: the "proxy_pass http://host/some:uri" directives did not
work; the bug had appeared in 0.7.12.
*) Bugfix: in HTTPS mode requests might fail with the "bad write retry"
error.
*) Bugfix: the ngx_http_secure_link_module did not work inside
locations, whose names are less than 3 characters.
*) Bugfix: $server_addr variable might have no value.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 10 Nov 2008 00:00:00 +0300 |
parents | 5bef04fc3fd5 |
children | bb941a2996a6 |
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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; } ngx_log_abort(err, ngx_trylock_fd_n " failed"); 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 " failed"); } 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 " failed"); } void ngx_shmtx_destory(ngx_shmtx_t *mtx); #endif #endif /* _NGX_SHMTX_H_INCLUDED_ */