Mercurial > hg > nginx-vendor-current
view src/core/ngx_spinlock.c @ 560:daf4847b43ff NGINX_0_8_32
nginx 0.8.32
*) Bugfix: UTF-8 encoding usage in the ngx_http_autoindex_module.
Thanks to Maxim Dounin.
*) Bugfix: regular expression named captures worked for two names only.
Thanks to Maxim Dounin.
*) Bugfix: now the "localhost" name is used in the "Host" request
header line, if an unix domain socket is defined in the "auth_http"
directive.
Thanks to Maxim Dounin.
*) Bugfix: nginx did nor support chunked transfer encoding for 201
responses.
Thanks to Julian Reich.
*) Bugfix: if the "expires modified" set date in the past, the a
negative number was set in the "Cache-Control" response header
line.
Thanks to Alex Kapranoff.
author | Igor Sysoev <http://sysoev.ru> |
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date | Mon, 11 Jan 2010 00:00:00 +0300 |
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 }