Mercurial > hg > nginx-ranges
view src/core/ngx_spinlock.c @ 447:ce4f9ff90bfa NGINX_0_7_31
nginx 0.7.31
*) Change: now the "try_files" directive tests files only and ignores
directories.
*) Feature: the "fastcgi_split_path_info" directive.
*) Bugfixes in an "Expect" request header line support.
*) Bugfixes in geo ranges.
*) Bugfix: in a miss case ngx_http_memcached_module returned the "END"
line as response body instead of default 404 page body; the bug had
appeared in 0.7.18.
Thanks to Maxim Dounin.
*) Bugfix: while SMTP proxying nginx issued message "250 2.0.0 OK"
instead of "235 2.0.0 OK"; the bug had appeared in 0.7.22.
Thanks to Maxim Dounin.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 19 Jan 2009 00:00:00 +0300 |
parents | 73e8476f9142 |
children |
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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 }