Mercurial > hg > nginx
annotate src/os/unix/ngx_atomic.h @ 485:4ebe09b07e30 release-0.1.17
nginx-0.1.17-RELEASE import
*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
Now it is possible to redirect, to return the error codes, to check
the variables and referrers. The directives can be used inside
locations. The redirect directive was canceled.
*) Feature: the ngx_http_geo_module.
*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
*) Bugfix: the location configuration with "=" modifier may be used in
another location.
*) Bugfix: the correct content type was set only for requests that use
small caps letters in extension.
*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
location, and access was denied, and the error was redirected to a
static page, then the segmentation fault occurred.
*) Bugfix: if in a proxied "Location" header was a relative URL, then a
host name and a slash were added to them; the bug had appeared in
0.1.14.
*) Bugfix: the system error message was not logged on Linux.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 03 Feb 2005 19:33:37 +0000 |
parents | 42d11f017717 |
children | 975f62e77f02 |
rev | line source |
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1 |
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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 #if ( __i386__ || __amd64__ ) |
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17 #define NGX_HAVE_ATOMIC_OPS 1 |
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19 typedef volatile uint32_t ngx_atomic_t; |
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20 |
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21 #if (NGX_SMP) |
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22 #define NGX_SMP_LOCK "lock;" |
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23 #else |
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24 #define NGX_SMP_LOCK |
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25 #endif |
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28 static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value) |
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29 { |
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30 uint32_t old; |
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31 |
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32 __asm__ volatile ( |
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34 NGX_SMP_LOCK |
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35 " xaddl %0, %2; " |
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36 " incl %0; " |
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38 : "=q" (old) : "0" (1), "m" (*value)); |
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39 |
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40 return old; |
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41 } |
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42 |
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43 |
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44 #if 0 |
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46 static ngx_inline uint32_t ngx_atomic_dec(ngx_atomic_t *value) |
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47 { |
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48 uint32_t old; |
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49 |
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50 __asm__ volatile ( |
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51 |
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52 NGX_SMP_LOCK |
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53 " xaddl %0, %1; " |
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54 " decl %0; " |
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55 |
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56 : "=q" (old) : "0" (-1), "m" (*value)); |
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57 |
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58 return old; |
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59 } |
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60 |
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61 #endif |
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63 |
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64 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock, |
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65 ngx_atomic_t old, |
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66 ngx_atomic_t set) |
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67 { |
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68 uint32_t res; |
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69 |
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70 __asm__ volatile ( |
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72 NGX_SMP_LOCK |
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73 " cmpxchgl %3, %1; " |
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74 " setz %%al; " |
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75 " movzbl %%al, %0; " |
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76 |
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77 : "=a" (res) : "m" (*lock), "a" (old), "q" (set)); |
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78 |
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79 return res; |
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80 } |
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81 |
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82 |
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83 #elif ( __sparc__ ) |
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84 |
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85 #define NGX_HAVE_ATOMIC_OPS 1 |
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86 |
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87 typedef volatile uint32_t ngx_atomic_t; |
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88 |
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89 |
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90 static ngx_inline uint32_t ngx_atomic_inc(ngx_atomic_t *value) |
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91 { |
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92 uint32_t old, new, res; |
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93 |
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94 old = *value; |
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95 |
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96 for ( ;; ) { |
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97 |
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98 new = old + 1; |
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99 res = new; |
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100 |
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101 __asm__ volatile ( |
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102 |
433
9a97dcdd2421
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428
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103 "casa [%1] 0x80, %2, %0" |
425
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104 |
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105 : "+r" (res) : "r" (value), "r" (old)); |
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106 |
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107 if (res == old) { |
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108 return new; |
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109 } |
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110 |
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111 old = res; |
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112 } |
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113 } |
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114 |
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115 |
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116 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock, |
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117 ngx_atomic_t old, |
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118 ngx_atomic_t set) |
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119 { |
428
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
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425
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120 uint32_t res = (uint32_t) set; |
425
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121 |
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122 __asm__ volatile ( |
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123 |
433
9a97dcdd2421
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parents:
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124 "casa [%1] 0x80, %2, %0" |
425
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125 |
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126 : "+r" (res) : "r" (lock), "r" (old)); |
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127 |
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128 return (res == old); |
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129 } |
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130 |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
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213
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131 #else |
5238e93961a1
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132 |
435
5cdc4838d4e8
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133 #define NGX_HAVE_ATOMIC_OPS 0 |
5cdc4838d4e8
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433
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134 |
267
83205e0b5522
nginx-0.0.2-2004-02-24-20:31:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
266
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135 typedef volatile uint32_t ngx_atomic_t; |
266
5238e93961a1
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213
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136 |
435
5cdc4838d4e8
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parents:
433
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137 #define ngx_atomic_inc(x) ++(*(x)); |
5cdc4838d4e8
nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
433
diff
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138 |
5cdc4838d4e8
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139 static ngx_inline uint32_t ngx_atomic_cmp_set(ngx_atomic_t *lock, |
5cdc4838d4e8
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Igor Sysoev <igor@sysoev.ru>
parents:
433
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140 ngx_atomic_t old, |
5cdc4838d4e8
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parents:
433
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141 ngx_atomic_t set) |
5cdc4838d4e8
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142 { |
5cdc4838d4e8
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143 return 1; |
5cdc4838d4e8
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433
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144 } |
266
5238e93961a1
nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents:
213
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145 |
5238e93961a1
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146 #endif |
212
679f60139863
nginx-0.0.1-2003-12-19-11:15:11 import
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147 |
679f60139863
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148 |
373
018569a8f09c
nginx-0.0.7-2004-06-30-19:30:41 import
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parents:
371
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149 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin); |
018569a8f09c
nginx-0.0.7-2004-06-30-19:30:41 import
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371
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150 |
371
780e93985b93
nginx-0.0.7-2004-06-28-20:05:02 import
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370
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151 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1)) |
780e93985b93
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370
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152 #define ngx_unlock(lock) *(lock) = 0 |
370
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
302
diff
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|
153 |
54f76b0b8dca
nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents:
302
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154 |
212
679f60139863
nginx-0.0.1-2003-12-19-11:15:11 import
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155 #endif /* _NGX_ATOMIC_H_INCLUDED_ */ |