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annotate src/os/win32/ngx_atomic.h @ 561:e48ebafc6939 release-0.3.2

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nginx-0.3.2-RELEASE import *) 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 <igor@sysoev.ru>
date Wed, 12 Oct 2005 13:50:36 +0000
parents d7c90bb5ce83
children 9c2f3ed7a247
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_ATOMIC_H_INCLUDED_
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8 #define _NGX_ATOMIC_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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15 #define NGX_HAVE_ATOMIC_OPS 1
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17 typedef int32_t ngx_atomic_int_t;
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18 typedef uint32_t ngx_atomic_uint_t;
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19 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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20 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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23 #if defined( __WATCOMC__ ) || defined( __BORLANDC__ ) || ( _MSC_VER >= 1300 )
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25 /* the new SDK headers */
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27 #define ngx_atomic_cmp_set(lock, old, set) \
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28 (InterlockedCompareExchange((long *) lock, set, old) == old)
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30 #else
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32 /* the old MS VC6.0SP2 SDK headers */
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34 #define ngx_atomic_cmp_set(lock, old, set) \
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35 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \
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36 == (void *) old)
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38 #endif
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41 #define ngx_atomic_fetch_add(p, add) InterlockedExchangeAdd((long *) p, add)
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44 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
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46 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
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47 #define ngx_unlock(lock) *(lock) = 0
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50 #endif /* _NGX_ATOMIC_H_INCLUDED_ */