Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_atomic.h @ 1181:ea5ecb1aae88
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author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 23 Apr 2007 16:56:17 +0000 |
parents | 3f8a2132b93d |
children | ec909315dfb0 |
rev | line source |
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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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561 | 17 typedef int32_t ngx_atomic_int_t; |
18 typedef uint32_t ngx_atomic_uint_t; | |
497 | 19 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
561 | 20 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 |
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461 | 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) \ |
581 | 28 ((ngx_atomic_uint_t) InterlockedCompareExchange((long *) lock, set, old) \ |
29 == old) | |
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31 #else |
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33 /* the old MS VC6.0SP2 SDK headers */ |
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35 #define ngx_atomic_cmp_set(lock, old, set) \ |
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36 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \ |
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37 == (void *) old) |
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39 #endif |
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561 | 42 #define ngx_atomic_fetch_add(p, add) InterlockedExchangeAdd((long *) p, add) |
43 | |
44 | |
563 | 45 #define ngx_memory_barrier() |
46 | |
47 | |
611 | 48 #ifdef __BORLANDC__ |
49 #define ngx_cpu_pause() | |
50 #else | |
51 #define ngx_cpu_pause() __asm { pause } | |
52 #endif | |
53 | |
54 | |
55 void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin); | |
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57 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
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58 #define ngx_unlock(lock) *(lock) = 0 |
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61 #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |