Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_atomic.h @ 4162:fb1375e8b68c stable-1.0
Merging r4036, r4055, r4056, r4057, r4058, r4059, r4060, r4061, r4062, r4063,
r4064:
Ranges related fixes:
The "max_ranges" directive.
"max_ranges 0" disables ranges support at all,
"max_ranges 1" allows the single range, etc.
By default number of ranges is unlimited, to be precise, 2^31-1.
If client requests more ranges than "max_ranges" permits,
nginx disables ranges and returns just the source response.
If total size of all ranges is greater than source response size,
then nginx disables ranges and returns just the source response.
This fix should not affect well-behaving applications but will defeat
DoS attempts exploiting malicious byte ranges.
Now unsatisfiable ranges are processed according to RFC 2616.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 30 Sep 2011 14:06:08 +0000 |
parents | 7658e9c7e814 |
children | d620f497c50f |
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; |
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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 | |
1193 | 48 #if defined( __BORLANDC__ ) || ( __WATCOMC__ < 1230 ) |
49 | |
50 /* | |
51 * Borland C++ 5.5 (tasm32) and Open Watcom C prior to 1.3 | |
52 * do not understand the "pause" instruction | |
53 */ | |
54 | |
611 | 55 #define ngx_cpu_pause() |
56 #else | |
57 #define ngx_cpu_pause() __asm { pause } | |
58 #endif | |
59 | |
60 | |
61 void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin); | |
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63 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
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64 #define ngx_unlock(lock) *(lock) = 0 |
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67 #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |