Mercurial > hg > nginx-vendor-0-5
comparison src/os/unix/ngx_sunpro_atomic_sparc64.h @ 110:dad2fe8ecf08 NGINX_0_3_2
nginx 0.3.2
*) Feature: the Sun Studio 10 C compiler support.
*) Feature: the "proxy_upstream_max_fails",
"proxy_upstream_fail_timeout", "fastcgi_upstream_max_fails", and
"fastcgi_upstream_fail_timeout" directives.
author | Igor Sysoev <http://sysoev.ru> |
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date | Wed, 12 Oct 2005 00:00:00 +0400 |
parents | |
children | 408f195b3482 |
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109:97da525033a1 | 110:dad2fe8ecf08 |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #if (NGX_PTR_SIZE == 4) | |
8 #define NGX_CASA ngx_casa | |
9 #else | |
10 #define NGX_CASA ngx_casxa | |
11 #endif | |
12 | |
13 | |
14 ngx_atomic_uint_t | |
15 ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock); | |
16 | |
17 ngx_atomic_uint_t | |
18 ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock); | |
19 | |
20 /* the code in src/os/unix/ngx_sunpro_sparc64.il */ | |
21 | |
22 | |
23 static ngx_inline ngx_atomic_uint_t | |
24 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
25 ngx_atomic_uint_t set) | |
26 { | |
27 NGX_CASA(set, old, lock); | |
28 | |
29 return (set == old); | |
30 } | |
31 | |
32 | |
33 static ngx_inline ngx_atomic_int_t | |
34 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) | |
35 { | |
36 ngx_atomic_uint_t old, res; | |
37 | |
38 old = *value; | |
39 | |
40 for ( ;; ) { | |
41 | |
42 res = old + add; | |
43 | |
44 NGX_CASA(res, old, value); | |
45 | |
46 if (res == old) { | |
47 return res; | |
48 } | |
49 | |
50 old = res; | |
51 } | |
52 } |