Mercurial > hg > nginx-vendor-current
view src/core/ngx_spinlock.c @ 380:bc21d9cd9c54 NGINX_0_7_2
nginx 0.7.2
*) Feature: now nginx supports EDH key exchange ciphers.
*) Feature: the "ssl_dhparam" directive.
*) Feature: the $ssl_client_cert variable.
Thanks to Manlio Perillo.
*) Bugfix: after changing URI via a "rewrite" directive nginx did not
search a new location; bug appeared in 0.7.1.
Thanks to Maxim Dounin.
*) Bugfix: nginx could not be built without PCRE library; bug appeared
in 0.7.1.
*) Bugfix: when a request to a directory was redirected with the slash
added, nginx dropped a query string from the original request.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 16 Jun 2008 00:00:00 +0400 |
parents | 73e8476f9142 |
children | d0f7a625f27c |
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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 }