Mercurial > hg > nginx-vendor-current
view src/core/ngx_spinlock.c @ 286:5bef04fc3fd5 NGINX_0_5_13
nginx 0.5.13
*) Feature: the COPY and MOVE methods.
*) Bugfix: the ngx_http_realip_module set garbage for requests passed
via keep-alive connection.
*) Bugfix: nginx did not work on big-endian 64-bit Linux.
Thanks to Andrei Nigmatulin.
*) Bugfix: now when IMAP/POP3 proxy receives too long command it closes
the connection right away, but not after timeout.
*) Bugfix: if the "epoll" method was used and a client closed a
connection prematurely, then nginx closed the connection after a
send timeout only.
*) Bugfix: nginx could not be built on platforms different from i386,
amd64, sparc and ppc; bug appeared in 0.5.8.
author | Igor Sysoev <http://sysoev.ru> |
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date | Mon, 19 Feb 2007 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 }