Mercurial > hg > nginx-ranges
view src/core/ngx_shmtx.h @ 495:6484cbba0222 NGINX_0_7_55
nginx 0.7.55
*) Bugfix: the http_XXX parameters in "proxy_cache_use_stale" and
"fastcgi_cache_use_stale" directives did not work.
*) Bugfix: fastcgi cache did not cache header only responses.
*) Bugfix: of "select() failed (9: Bad file descriptor)" error in
nginx/Unix and "select() failed (10022: ...)" error in nginx/Windows.
*) Bugfix: a segmentation fault might occur in worker process, if an
"debug_connection" directive was used; the bug had appeared in
0.7.54.
*) Bugfix: fix ngx_http_image_filter_module building errors.
*) Bugfix: the files bigger than 2G could not be transferred using
$r->sendfile.
Thanks to Maxim Dounin.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Wed, 06 May 2009 00:00:00 +0400 |
parents | bb941a2996a6 |
children |
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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_ */