Mercurial > hg > nginx
annotate src/os/unix/ngx_atomic.h @ 571:458b6c3fea65 release-0.3.7
nginx-0.3.7-RELEASE import
*) Feature: the "access_log" supports the "buffer=" parameter.
*) Bugfix: nginx could not be built on platforms different from i386,
amd64, sparc, and ppc; the bug had appeared in 0.3.2.
| author | Igor Sysoev <igor@sysoev.ru> |
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| date | Thu, 27 Oct 2005 15:46:13 +0000 |
| parents | 9c2f3ed7a247 |
| children | 3f8a2132b93d |
| 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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| 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") |
| 37 | |
| 493 | 38 |
| 561 | 39 #else /* ( __GNUC__ || __INTEL_COMPILER ) */ |
| 40 | |
| 41 #define NGX_HAVE_ATOMIC_OPS 1 | |
| 493 | 42 |
| 561 | 43 #include "ngx_gcc_atomic_x86.h" |
| 493 | 44 |
| 561 | 45 #endif |
| 493 | 46 |
| 47 | |
| 547 | 48 #elif ( __amd64__ || __amd64 ) |
| 493 | 49 |
| 561 | 50 typedef int64_t ngx_atomic_int_t; |
| 51 typedef uint64_t ngx_atomic_uint_t; | |
| 495 | 52 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 561 | 53 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1 |
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| 561 | 56 #if ( __SUNPRO_C ) |
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| 561 | 58 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 60 ngx_atomic_uint_t |
| 61 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
| 62 ngx_atomic_uint_t set); | |
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| 561 | 64 ngx_atomic_int_t |
| 65 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add); | |
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| 561 | 67 /* the code in src/os/unix/ngx_sunpro_amd64.il */ |
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| 563 | 69 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile") |
| 70 | |
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| 561 | 72 #else /* ( __GNUC__ || __INTEL_COMPILER ) */ |
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| 561 | 74 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 76 #include "ngx_gcc_atomic_amd64.h" |
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| 561 | 78 #endif |
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| 547 | 81 #elif ( __sparc__ || __sparcv9 ) |
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| 561 | 83 #if (NGX_PTR_SIZE == 8) |
| 84 | |
| 85 typedef int64_t ngx_atomic_int_t; | |
| 86 typedef uint64_t ngx_atomic_uint_t; | |
| 87 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1 | |
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| 493 | 89 #else |
| 561 | 90 |
| 91 typedef int32_t ngx_atomic_int_t; | |
| 92 typedef uint32_t ngx_atomic_uint_t; | |
| 93 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 | |
| 94 | |
| 493 | 95 #endif |
| 96 | |
| 495 | 97 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
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| 561 | 100 #if ( __SUNPRO_C ) |
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| 561 | 102 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 104 #include "ngx_sunpro_atomic_sparc64.h" |
| 493 | 105 |
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| 561 | 107 #else /* ( __GNUC__ || __INTEL_COMPILER ) */ |
| 493 | 108 |
| 561 | 109 #define NGX_HAVE_ATOMIC_OPS 1 |
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| 561 | 111 #include "ngx_gcc_atomic_sparc64.h" |
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| 561 | 113 #endif |
| 493 | 114 |
| 115 | |
| 525 | 116 #elif ( __ppc__ || __powerpc__ ) |
| 493 | 117 |
| 118 #define NGX_HAVE_ATOMIC_OPS 1 | |
| 119 | |
| 120 #if (NGX_PTR_SIZE == 8) | |
| 561 | 121 |
| 122 typedef int64_t ngx_atomic_int_t; | |
| 123 typedef uint64_t ngx_atomic_uint_t; | |
| 124 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1 | |
| 125 | |
| 493 | 126 #else |
| 561 | 127 |
| 128 typedef int32_t ngx_atomic_int_t; | |
| 129 typedef uint32_t ngx_atomic_uint_t; | |
| 130 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 | |
| 131 | |
| 493 | 132 #endif |
| 133 | |
| 495 | 134 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 493 | 135 |
| 136 | |
| 561 | 137 #include "ngx_gcc_atomic_ppc.h" |
| 493 | 138 |
| 139 | |
| 561 | 140 #endif |
| 493 | 141 |
| 142 | |
| 561 | 143 #if !(NGX_HAVE_ATOMIC_OPS) |
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145 #define NGX_HAVE_ATOMIC_OPS 0 |
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146 |
| 561 | 147 typedef int32_t ngx_atomic_int_t; |
| 148 typedef uint32_t ngx_atomic_uint_t; | |
| 495 | 149 typedef volatile ngx_atomic_uint_t ngx_atomic_t; |
| 561 | 150 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1 |
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152 |
| 495 | 153 static ngx_inline ngx_atomic_uint_t |
| 154 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, | |
| 155 ngx_atomic_uint_t set) | |
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156 { |
| 571 | 157 if (*lock == old) { |
| 561 | 158 *lock = set; |
| 159 return 1; | |
| 160 } | |
| 161 | |
| 162 return 0; | |
| 163 } | |
| 164 | |
| 165 | |
| 166 static ngx_inline ngx_atomic_int_t | |
| 167 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) | |
| 168 { | |
| 169 ngx_atomic_int_t old; | |
| 170 | |
| 171 old = *value; | |
| 172 *value += add; | |
| 173 | |
| 174 return old; | |
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175 } |
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| 571 | 177 #define ngx_memory_barrier() |
| 178 | |
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179 #endif |
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181 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin); |
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183 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
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184 #define ngx_unlock(lock) *(lock) = 0 |
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187 #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |