Mercurial > hg > nginx-vendor-current
view src/core/ngx_shmtx.h @ 622:8dc007eddbcf NGINX_1_0_1
nginx 1.0.1
*) Change: now the "split_clients" directive uses MurmurHash2 algorithm
because of better distribution.
Thanks to Oleg Mamontov.
*) Change: now long strings starting with zero are not considered as
false values.
Thanks to Maxim Dounin.
*) Change: now nginx uses a default listen backlog value 511 on Linux.
*) Feature: the $upstream_... variables may be used in the SSI and perl
modules.
*) Bugfix: now nginx limits better disk cache size.
Thanks to Oleg Mamontov.
*) Bugfix: a segmentation fault might occur while parsing incorrect
IPv4 address; the bug had appeared in 0.9.3.
Thanks to Maxim Dounin.
*) Bugfix: nginx could not be built by gcc 4.6 without --with-debug
option.
*) Bugfix: nginx could not be built on Solaris 9 and earlier; the bug
had appeared in 0.9.3.
Thanks to Dagobert Michelsen.
*) Bugfix: $request_time variable had invalid values if subrequests
were used; the bug had appeared in 0.8.47.
Thanks to Igor A. Valcov.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Tue, 03 May 2011 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_ */