Mercurial > hg > nginx-vendor-current
view src/core/ngx_spinlock.c @ 494:499474178a11 NGINX_0_7_59
nginx 0.7.59
*) Feature: the "proxy_cache_methods" and "fastcgi_cache_methods"
directives.
*) Bugfix: socket leak; the bug had appeared in 0.7.25.
Thanks to Maxim Dounin.
*) Bugfix: a segmentation fault occurred in worker process,
if a request had no body and the $request_body variable was used;
the bug had appeared in 0.7.58.
*) Bugfix: the SSL modules might not built on Solaris and Linux;
the bug had appeared in 0.7.58.
*) Bugfix: ngx_http_xslt_filter_module responses were not handled by
SSI, charset, and gzip filters.
*) Bugfix: a "charset" directive did not set a charset to
ngx_http_gzip_static_module responses.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 25 May 2009 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 }