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annotate src/os/win32/ngx_atomic.h @ 444:42d11f017717

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nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
author Igor Sysoev <igor@sysoev.ru>
date Wed, 29 Sep 2004 16:00:49 +0000
parents da8c5707af39
children a88a3e4e158f
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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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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18 #define ngx_atomic_inc(p) InterlockedIncrement((long *) p)
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21 #if defined( __WATCOMC__ ) || defined( __BORLANDC__ )
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23 /* the new SDK headers */
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25 #define ngx_atomic_cmp_set(lock, old, set) \
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26 (InterlockedCompareExchange((long *) lock, set, old) == old)
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28 #else
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30 /* the old MS VC6.0SP2 SDK headers */
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32 #define ngx_atomic_cmp_set(lock, old, set) \
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33 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \
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34 == (void *) old)
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36 #endif
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39 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
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41 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
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42 #define ngx_unlock(lock) *(lock) = 0
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45 #endif /* _NGX_ATOMIC_H_INCLUDED_ */