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annotate src/os/unix/ngx_atomic.h @ 3165:7658e9c7e814

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use parents around NGX_ATOMIC_T_LEN value
author Igor Sysoev <igor@sysoev.ru>
date Fri, 25 Sep 2009 20:25:47 +0000
parents c505e2712e13
children b57a4a704f3c
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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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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679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
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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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14
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15 #if (NGX_DARWIN_ATOMIC)
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16
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17 /*
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18 * use Darwin 8 atomic(3) and barrier(3) operations
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19 * optimized at run-time for UP and SMP
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20 */
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21
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22 #include <libkern/OSAtomic.h>
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23
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24 /* "bool" conflicts with perl's CORE/handy.h */
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25 #undef bool
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26
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27
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28 #define NGX_HAVE_ATOMIC_OPS 1
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29
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30 #if (NGX_PTR_SIZE == 8)
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31
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32 typedef int64_t ngx_atomic_int_t;
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33 typedef uint64_t ngx_atomic_uint_t;
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34 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
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35
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36 #define ngx_atomic_cmp_set(lock, old, new) \
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37 OSAtomicCompareAndSwap64Barrier(old, new, (int64_t *) lock)
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38
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39 #define ngx_atomic_fetch_add(value, add) \
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40 (OSAtomicAdd64(add, (int64_t *) value) - add)
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41
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42 #else
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43
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44 typedef int32_t ngx_atomic_int_t;
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45 typedef uint32_t ngx_atomic_uint_t;
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46 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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47
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48 #define ngx_atomic_cmp_set(lock, old, new) \
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49 OSAtomicCompareAndSwap32Barrier(old, new, (int32_t *) lock)
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50
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51 #define ngx_atomic_fetch_add(value, add) \
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52 (OSAtomicAdd32(add, (int32_t *) value) - add)
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53
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54 #endif
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55
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56 #define ngx_memory_barrier() OSMemoryBarrier()
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57
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58 #define ngx_cpu_pause()
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59
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60 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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61
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62
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63 #else /* !(NGX_DARWIN) */
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64
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65
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66 #if ( __i386__ || __i386 )
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67
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68 typedef int32_t ngx_atomic_int_t;
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69 typedef uint32_t ngx_atomic_uint_t;
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70 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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71 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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74 #if ( __SUNPRO_C )
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75
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76 #define NGX_HAVE_ATOMIC_OPS 1
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78 ngx_atomic_uint_t
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79 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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80 ngx_atomic_uint_t set);
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81
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82 ngx_atomic_int_t
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83 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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84
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85 /*
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86 * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
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87 * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_x86.il
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88 */
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89
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90 void
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91 ngx_cpu_pause(void);
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92
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93 /* the code in src/os/unix/ngx_sunpro_x86.il */
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94
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95 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
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98 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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99
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100 #define NGX_HAVE_ATOMIC_OPS 1
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102 #include "ngx_gcc_atomic_x86.h"
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103
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104 #endif
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105
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106
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107 #elif ( __amd64__ || __amd64 )
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108
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109 typedef int64_t ngx_atomic_int_t;
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110 typedef uint64_t ngx_atomic_uint_t;
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111 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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112 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
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113
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114
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115 #if ( __SUNPRO_C )
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117 #define NGX_HAVE_ATOMIC_OPS 1
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118
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119 ngx_atomic_uint_t
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120 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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121 ngx_atomic_uint_t set);
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123 ngx_atomic_int_t
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124 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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125
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126 /*
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127 * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
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128 * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_amd64.il
08c6ee7a1b11 Sun Studio 12 compatibility
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parents: 1308
diff changeset
129 */
08c6ee7a1b11 Sun Studio 12 compatibility
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parents: 1308
diff changeset
130
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
131 void
08c6ee7a1b11 Sun Studio 12 compatibility
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parents: 1308
diff changeset
132 ngx_cpu_pause(void);
08c6ee7a1b11 Sun Studio 12 compatibility
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parents: 1308
diff changeset
133
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
134 /* the code in src/os/unix/ngx_sunpro_amd64.il */
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
135
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
136 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
137
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
138
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
139 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
140
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
141 #define NGX_HAVE_ATOMIC_OPS 1
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
142
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
143 #include "ngx_gcc_atomic_amd64.h"
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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parents: 213
diff changeset
144
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
145 #endif
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
146
301
744965ec6275 nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 300
diff changeset
147
1308
63fa39cf8bd0 --with-cpu-opt=sparc32 and --with-cpu-opt=sparc64
Igor Sysoev <igor@sysoev.ru>
parents: 940
diff changeset
148 #elif ( __sparc__ || __sparc || __sparcv9 )
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
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parents: 373
diff changeset
149
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
150 #if (NGX_PTR_SIZE == 8)
e48ebafc6939 nginx-0.3.2-RELEASE import
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parents: 551
diff changeset
151
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
152 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
153 typedef uint64_t ngx_atomic_uint_t;
3165
7658e9c7e814 use parents around NGX_ATOMIC_T_LEN value
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parents: 2133
diff changeset
154 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
155
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
156 #else
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
157
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
158 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
159 typedef uint32_t ngx_atomic_uint_t;
3165
7658e9c7e814 use parents around NGX_ATOMIC_T_LEN value
Igor Sysoev <igor@sysoev.ru>
parents: 2133
diff changeset
160 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
161
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
162 #endif
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
163
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
164 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
165
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
166
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
167 #if ( __SUNPRO_C )
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
168
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
169 #define NGX_HAVE_ATOMIC_OPS 1
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
170
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
171 #include "ngx_sunpro_atomic_sparc64.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
172
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
173
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
174 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
175
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
176 #define NGX_HAVE_ATOMIC_OPS 1
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
177
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
178 #include "ngx_gcc_atomic_sparc64.h"
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
179
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
180 #endif
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
181
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
182
613
c73c5c58c619 nginx-0.3.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 611
diff changeset
183 #elif ( __powerpc__ || __POWERPC__ )
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
184
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
185 #define NGX_HAVE_ATOMIC_OPS 1
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
186
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
187 #if (NGX_PTR_SIZE == 8)
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
188
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
189 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
190 typedef uint64_t ngx_atomic_uint_t;
3165
7658e9c7e814 use parents around NGX_ATOMIC_T_LEN value
Igor Sysoev <igor@sysoev.ru>
parents: 2133
diff changeset
191 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
192
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
193 #else
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
194
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
195 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
196 typedef uint32_t ngx_atomic_uint_t;
3165
7658e9c7e814 use parents around NGX_ATOMIC_T_LEN value
Igor Sysoev <igor@sysoev.ru>
parents: 2133
diff changeset
197 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
198
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
199 #endif
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
200
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
201 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
202
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
203
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
204 #include "ngx_gcc_atomic_ppc.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
205
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
206
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
207 #endif
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
208
939
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
209 #endif
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
210
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
211
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
212 #if !(NGX_HAVE_ATOMIC_OPS)
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
213
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
214 #define NGX_HAVE_ATOMIC_OPS 0
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
215
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
216 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
217 typedef uint32_t ngx_atomic_uint_t;
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
218 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
3165
7658e9c7e814 use parents around NGX_ATOMIC_T_LEN value
Igor Sysoev <igor@sysoev.ru>
parents: 2133
diff changeset
219 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
220
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
221
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
222 static ngx_inline ngx_atomic_uint_t
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
223 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
224 ngx_atomic_uint_t set)
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
225 {
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
226 if (*lock == old) {
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
227 *lock = set;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
228 return 1;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
229 }
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
230
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
231 return 0;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
232 }
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
233
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
234
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
235 static ngx_inline ngx_atomic_int_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
236 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
237 {
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
238 ngx_atomic_int_t old;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
239
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
240 old = *value;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
241 *value += add;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
242
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
243 return old;
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
244 }
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
245
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
246 #define ngx_memory_barrier()
611
3f8a2132b93d nginx-0.3.27-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 571
diff changeset
247 #define ngx_cpu_pause()
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
248
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
249 #endif
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
250
939
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
251
611
3f8a2132b93d nginx-0.3.27-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 571
diff changeset
252 void ngx_spinlock(ngx_atomic_t *lock, ngx_atomic_int_t value, ngx_uint_t spin);
373
018569a8f09c nginx-0.0.7-2004-06-30-19:30:41 import
Igor Sysoev <igor@sysoev.ru>
parents: 371
diff changeset
253
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
254 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
255 #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 changeset
256
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 302
diff changeset
257
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
258 #endif /* _NGX_ATOMIC_H_INCLUDED_ */