Mercurial > hg > nginx
annotate src/os/unix/ngx_atomic.h @ 613:c73c5c58c619 release-0.3.28
nginx-0.3.28-RELEASE import
*) Feature: the "restrict_host_names" directive was canceled.
*) Feature: the --with-cpu-opt=ppc64 configuration parameter.
*) Bugfix: on some condition the proxied connection with a client was
terminated prematurely.
Thanks to Vladimir Shutoff.
*) Bugfix: the "X-Accel-Limit-Rate" header line was not taken into
account if the request was redirected using the "X-Accel-Redirect"
header line.
*) Bugfix: the "post_action" directive ran only after a successful
completion of a request.
*) Bugfix: the proxied response body generated by the "post_action"
directive was transferred to a client.
| author | Igor Sysoev <igor@sysoev.ru> |
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| date | Thu, 16 Feb 2006 15:26:46 +0000 |
| parents | 3f8a2132b93d |
| children | 782cf4c13b8d |
| 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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| 547 | 15 #if ( __i386__ || __i386 ) |
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16 |
| 561 | 17 typedef int32_t ngx_atomic_int_t; |
| 18 typedef uint32_t ngx_atomic_uint_t; | |
| 495 | 19 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 561 | 20 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 |
| 493 | 21 |
| 22 | |
| 561 | 23 #if ( __SUNPRO_C ) |
| 493 | 24 |
| 561 | 25 #define NGX_HAVE_ATOMIC_OPS 1 |
| 493 | 26 |
| 561 | 27 ngx_atomic_uint_t |
| 28 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
| 29 ngx_atomic_uint_t set); | |
| 493 | 30 |
| 561 | 31 ngx_atomic_int_t |
| 32 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add); | |
| 493 | 33 |
| 561 | 34 /* the code in src/os/unix/ngx_sunpro_x86.il */ |
| 493 | 35 |
| 563 | 36 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile") |
| 611 | 37 #define ngx_cpu_pause() __asm ("pause") |
| 563 | 38 |
| 493 | 39 |
| 561 | 40 #else /* ( __GNUC__ || __INTEL_COMPILER ) */ |
| 41 | |
| 42 #define NGX_HAVE_ATOMIC_OPS 1 | |
| 493 | 43 |
| 561 | 44 #include "ngx_gcc_atomic_x86.h" |
| 493 | 45 |
| 561 | 46 #endif |
| 493 | 47 |
| 48 | |
| 547 | 49 #elif ( __amd64__ || __amd64 ) |
| 493 | 50 |
| 561 | 51 typedef int64_t ngx_atomic_int_t; |
| 52 typedef uint64_t ngx_atomic_uint_t; | |
| 495 | 53 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 561 | 54 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1 |
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| 561 | 57 #if ( __SUNPRO_C ) |
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| 561 | 59 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 61 ngx_atomic_uint_t |
| 62 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
| 63 ngx_atomic_uint_t set); | |
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64 |
| 561 | 65 ngx_atomic_int_t |
| 66 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add); | |
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| 561 | 68 /* the code in src/os/unix/ngx_sunpro_amd64.il */ |
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69 |
| 563 | 70 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile") |
| 611 | 71 #define ngx_cpu_pause() __asm ("pause") |
| 563 | 72 |
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| 561 | 74 #else /* ( __GNUC__ || __INTEL_COMPILER ) */ |
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| 561 | 76 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 78 #include "ngx_gcc_atomic_amd64.h" |
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| 561 | 80 #endif |
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| 547 | 83 #elif ( __sparc__ || __sparcv9 ) |
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84 |
| 561 | 85 #if (NGX_PTR_SIZE == 8) |
| 86 | |
| 87 typedef int64_t ngx_atomic_int_t; | |
| 88 typedef uint64_t ngx_atomic_uint_t; | |
| 89 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1 | |
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90 |
| 493 | 91 #else |
| 561 | 92 |
| 93 typedef int32_t ngx_atomic_int_t; | |
| 94 typedef uint32_t ngx_atomic_uint_t; | |
| 95 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 | |
| 96 | |
| 493 | 97 #endif |
| 98 | |
| 495 | 99 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
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| 561 | 102 #if ( __SUNPRO_C ) |
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| 561 | 104 #define NGX_HAVE_ATOMIC_OPS 1 |
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105 |
| 561 | 106 #include "ngx_sunpro_atomic_sparc64.h" |
| 493 | 107 |
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| 561 | 109 #else /* ( __GNUC__ || __INTEL_COMPILER ) */ |
| 493 | 110 |
| 561 | 111 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 113 #include "ngx_gcc_atomic_sparc64.h" |
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114 |
| 561 | 115 #endif |
| 493 | 116 |
| 117 | |
| 613 | 118 #elif ( __powerpc__ || __POWERPC__ ) |
| 493 | 119 |
| 120 #define NGX_HAVE_ATOMIC_OPS 1 | |
| 121 | |
| 122 #if (NGX_PTR_SIZE == 8) | |
| 561 | 123 |
| 124 typedef int64_t ngx_atomic_int_t; | |
| 125 typedef uint64_t ngx_atomic_uint_t; | |
| 126 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1 | |
| 127 | |
| 493 | 128 #else |
| 561 | 129 |
| 130 typedef int32_t ngx_atomic_int_t; | |
| 131 typedef uint32_t ngx_atomic_uint_t; | |
| 132 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 | |
| 133 | |
| 493 | 134 #endif |
| 135 | |
| 495 | 136 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 493 | 137 |
| 138 | |
| 561 | 139 #include "ngx_gcc_atomic_ppc.h" |
| 493 | 140 |
| 141 | |
| 561 | 142 #endif |
| 493 | 143 |
| 144 | |
| 561 | 145 #if !(NGX_HAVE_ATOMIC_OPS) |
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147 #define NGX_HAVE_ATOMIC_OPS 0 |
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148 |
| 561 | 149 typedef int32_t ngx_atomic_int_t; |
| 150 typedef uint32_t ngx_atomic_uint_t; | |
| 495 | 151 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 561 | 152 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 |
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154 |
| 495 | 155 static ngx_inline ngx_atomic_uint_t |
| 156 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
| 157 ngx_atomic_uint_t set) | |
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158 { |
| 571 | 159 if (*lock == old) { |
| 561 | 160 *lock = set; |
| 161 return 1; | |
| 162 } | |
| 163 | |
| 164 return 0; | |
| 165 } | |
| 166 | |
| 167 | |
| 168 static ngx_inline ngx_atomic_int_t | |
| 169 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) | |
| 170 { | |
| 171 ngx_atomic_int_t old; | |
| 172 | |
| 173 old = *value; | |
| 174 *value += add; | |
| 175 | |
| 176 return old; | |
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177 } |
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178 |
| 571 | 179 #define ngx_memory_barrier() |
| 611 | 180 #define ngx_cpu_pause() |
| 571 | 181 |
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182 #endif |
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183 |
| 611 | 184 void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin); |
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186 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
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187 #define ngx_unlock(lock) *(lock) = 0 |
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190 #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |