Mercurial > hg > nginx-vendor-1-0
view src/core/ngx_spinlock.c @ 346:05693816539c NGINX_0_6_17
nginx 0.6.17
*) Feature: the "If-Range" request header line support.
Thanks to Alexander V. Inyukhin.
*) Bugfix: URL double escaping in a redirect of the "msie_refresh"
directive; bug appeared in 0.6.4.
*) Bugfix: the "autoindex" directive did not work with the "alias /"
directive.
*) Bugfix: a segmentation fault might occur in worker process if
subrequests were used.
*) Bugfix: the big responses may be transferred truncated if SSL and
gzip were used.
*) Bugfix: the $status variable was equal to 0 if a proxied server
returned response in HTTP/0.9 version.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Thu, 15 Nov 2007 00:00:00 +0300 |
parents | 73e8476f9142 |
children | ad25218fd14b |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin) { #if (NGX_HAVE_ATOMIC_OPS) ngx_uint_t i, n; for ( ;; ) { if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, value)) { return; } if (ngx_ncpu > 1) { for (n = 1; n < spin; n <<= 1) { for (i = 0; i < n; i++) { ngx_cpu_pause(); } if (*lock == 0 && ngx_atomic_cmp_set(lock, 0, value)) { return; } } } ngx_sched_yield(); } #else #if (NGX_THREADS) #error ngx_spinlock() or ngx_atomic_cmp_set() are not defined ! #endif #endif }