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annotate src/os/win32/ngx_atomic.h @ 435:5cdc4838d4e8

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nginx-0.0.11-2004-09-22-20:18:21 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 22 Sep 2004 16:18:21 +0000
parents 018569a8f09c
children da8c5707af39
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679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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1 #ifndef _NGX_ATOMIC_H_INCLUDED_
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2 #define _NGX_ATOMIC_H_INCLUDED_
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5 #include <ngx_config.h>
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6 #include <ngx_core.h>
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9 #define NGX_HAVE_ATOMIC_OPS 1
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12 #define ngx_atomic_inc(p) InterlockedIncrement((long *) p)
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15 #if defined( __WATCOMC__ ) || defined( __BORLANDC__ )
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17 /* the new SDK headers */
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19 #define ngx_atomic_cmp_set(lock, old, set) \
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20 (InterlockedCompareExchange((long *) lock, set, old) == old)
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22 #else
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24 /* the old MS VC6.0SP2 SDK headers */
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26 #define ngx_atomic_cmp_set(lock, old, set) \
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27 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \
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28 == (void *) old)
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30 #endif
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33 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
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35 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
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36 #define ngx_unlock(lock) *(lock) = 0
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39 #endif /* _NGX_ATOMIC_H_INCLUDED_ */