Mercurial > hg > nginx
annotate src/os/win32/ngx_atomic.h @ 8862:3fdf0afd5d45 quic
HTTP/3: fixed pushed request finalization in case of error.
Previously request could be finalized twice. For example, this could happen
if "Host" header was invalid.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Fri, 17 Sep 2021 15:28:31 +0300 |
parents | 2cd019520210 |
children | 32a5186a2705 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_ATOMIC_H_INCLUDED_ |
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9 #define _NGX_ATOMIC_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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16 #define NGX_HAVE_ATOMIC_OPS 1 |
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17 |
561 | 18 typedef int32_t ngx_atomic_int_t; |
19 typedef uint32_t ngx_atomic_uint_t; | |
497 | 20 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
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21 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1) |
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24 #if defined( __WATCOMC__ ) || defined( __BORLANDC__ ) || defined(__GNUC__) \ |
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25 || ( _MSC_VER >= 1300 ) |
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27 /* the new SDK headers */ |
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29 #define ngx_atomic_cmp_set(lock, old, set) \ |
6474 | 30 ((ngx_atomic_uint_t) InterlockedCompareExchange((long *) lock, set, old) \ |
31 == old) | |
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32 |
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33 #else |
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35 /* the old MS VC6.0SP2 SDK headers */ |
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37 #define ngx_atomic_cmp_set(lock, old, set) \ |
6474 | 38 (InterlockedCompareExchange((void **) lock, (void *) set, (void *) old) \ |
39 == (void *) old) | |
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41 #endif |
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561 | 44 #define ngx_atomic_fetch_add(p, add) InterlockedExchangeAdd((long *) p, add) |
45 | |
46 | |
563 | 47 #define ngx_memory_barrier() |
48 | |
49 | |
1193 | 50 #if defined( __BORLANDC__ ) || ( __WATCOMC__ < 1230 ) |
51 | |
52 /* | |
53 * Borland C++ 5.5 (tasm32) and Open Watcom C prior to 1.3 | |
54 * do not understand the "pause" instruction | |
55 */ | |
56 | |
611 | 57 #define ngx_cpu_pause() |
58 #else | |
59 #define ngx_cpu_pause() __asm { pause } | |
60 #endif | |
61 | |
62 | |
63 void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin); | |
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65 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
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66 #define ngx_unlock(lock) *(lock) = 0 |
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67 |
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69 #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |