Mercurial > hg > nginx-vendor-0-8
view src/os/unix/ngx_gcc_atomic_sparc64.h @ 554:5c576ea5dbd9 NGINX_0_8_29
nginx 0.8.29
*) Change: now the "009" status code is written to an access log for
proxied HTTP/0.9 responses.
*) Feature: the "addition_types", "charset_types", "gzip_types",
"ssi_types", "sub_filter_types", and "xslt_types" directives support
an "*" parameter.
*) Feature: GCC 4.1+ built-in atomic operations usage.
Thanks to W-Mark Kubacki.
*) Feature: the --with-libatomic[=DIR] option in the configure.
Thanks to W-Mark Kubacki.
*) Bugfix: listen unix domain socket had limited access rights.
*) Bugfix: cached HTTP/0.9 responses were handled incorrectly.
*) Bugfix: regular expression named captures given by "?P<...>" did not
work in a "server_name" directive.
Thanks to Maxim Dounin.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 30 Nov 2009 00:00:00 +0300 |
parents | 73e8476f9142 |
children |
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/* * Copyright (C) Igor Sysoev */ /* * "casa [r1] 0x80, r2, r0" and * "casxa [r1] 0x80, r2, r0" do the following: * * if ([r1] == r2) { * swap(r0, [r1]); * } else { * r0 = [r1]; * } * * so "r0 == r2" means that the operation was successfull. * * * The "r" means the general register. * The "+r" means the general register used for both input and output. */ #if (NGX_PTR_SIZE == 4) #define NGX_CASA "casa" #else #define NGX_CASA "casxa" #endif static ngx_inline ngx_atomic_uint_t ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, ngx_atomic_uint_t set) { __asm__ volatile ( NGX_CASA " [%1] 0x80, %2, %0" : "+r" (set) : "r" (lock), "r" (old) : "memory"); return (set == old); } static ngx_inline ngx_atomic_int_t ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) { ngx_atomic_uint_t old, res; old = *value; for ( ;; ) { res = old + add; __asm__ volatile ( NGX_CASA " [%1] 0x80, %2, %0" : "+r" (res) : "r" (value), "r" (old) : "memory"); if (res == old) { return res; } old = res; } } #if (NGX_SMP) #define ngx_memory_barrier() \ __asm__ volatile ( \ "membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad" \ ::: "memory") #else #define ngx_memory_barrier() __asm__ volatile ("" ::: "memory") #endif #define ngx_cpu_pause()