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comparison src/os/win32/ngx_atomic.h @ 373:018569a8f09c

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nginx-0.0.7-2004-06-30-19:30:41 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 30 Jun 2004 15:30:41 +0000
parents src/core/ngx_atomic.h@780e93985b93
children 5cdc4838d4e8
comparison
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372:c9fdfccebc49 373:018569a8f09c
1 #ifndef _NGX_ATOMIC_H_INCLUDED_
2 #define _NGX_ATOMIC_H_INCLUDED_
3
4
5 #include <ngx_config.h>
6 #include <ngx_core.h>
7
8
9 #define ngx_atomic_inc(p) InterlockedIncrement((long *) p)
10 #define ngx_atomic_dec(p) InterlockedDecrement((long *) p)
11
12
13 #if defined( __WATCOMC__ ) || defined( __BORLANDC__ )
14
15 #define ngx_atomic_cmp_set(lock, old, set) \
16 (InterlockedCompareExchange((long *) lock, set, old) == old)
17
18 #else
19
20 #define ngx_atomic_cmp_set(lock, old, set) \
21 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \
22 == (void *) old)
23
24 #endif
25
26
27 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
28
29 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
30 #define ngx_unlock(lock) *(lock) = 0
31
32
33 #endif /* _NGX_ATOMIC_H_INCLUDED_ */