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annotate src/os/unix/ngx_atomic.h @ 3362:b57a4a704f3c

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GCC 4.1 builtin atomic operations
author Igor Sysoev <igor@sysoev.ru>
date Wed, 25 Nov 2009 17:34:35 +0000
parents 7658e9c7e814
children b4aa418af6ef
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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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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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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 #elif (NGX_HAVE_GCC_ATOMIC)
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64
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65 /* GCC 4.1 builtin atomic operations */
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66
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67 #define NGX_HAVE_ATOMIC_OPS 1
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68
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69 typedef long ngx_atomic_int_t;
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70 typedef unsigned long ngx_atomic_uint_t;
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71
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72 #if (NGX_PTR_SIZE == 8)
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73 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
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74 #else
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75 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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76 #endif
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77
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78 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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80
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81 #define ngx_atomic_cmp_set(lock, old, set) \
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82 __sync_bool_compare_and_swap(lock, old, set)
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83
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84 #define ngx_atomic_fetch_add(value, add) \
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85 __sync_fetch_and_add(value, add)
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86
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87 #define ngx_memory_barrier() __sync_synchronize()
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88
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89 #if ( __i386__ || __i386 || __amd64__ || __amd64 )
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90 #define ngx_cpu_pause() __asm__ ("pause")
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91 #else
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92 #define ngx_cpu_pause()
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93 #endif
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95
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96 #elif ( __i386__ || __i386 )
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97
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98 typedef int32_t ngx_atomic_int_t;
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99 typedef uint32_t ngx_atomic_uint_t;
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100 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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101 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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103
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104 #if ( __SUNPRO_C )
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105
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106 #define NGX_HAVE_ATOMIC_OPS 1
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108 ngx_atomic_uint_t
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109 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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110 ngx_atomic_uint_t set);
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111
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112 ngx_atomic_int_t
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113 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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114
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115 /*
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116 * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
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117 * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_x86.il
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118 */
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119
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120 void
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121 ngx_cpu_pause(void);
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122
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123 /* the code in src/os/unix/ngx_sunpro_x86.il */
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125 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
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128 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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129
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130 #define NGX_HAVE_ATOMIC_OPS 1
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975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
131
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
132 #include "ngx_gcc_atomic_x86.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
133
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
134 #endif
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
135
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
136
547
818fbd4750b9 nginx-0.2.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 525
diff changeset
137 #elif ( __amd64__ || __amd64 )
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
138
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
139 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
140 typedef uint64_t ngx_atomic_uint_t;
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
141 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
142 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
143
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
144
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
145 #if ( __SUNPRO_C )
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
146
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
147 #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
148
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
149 ngx_atomic_uint_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
150 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
151 ngx_atomic_uint_t set);
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
152
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
153 ngx_atomic_int_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
154 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
155
1309
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
156 /*
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
157 * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
158 * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_amd64.il
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
159 */
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
160
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
161 void
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
162 ngx_cpu_pause(void);
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
163
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
164 /* 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
165
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
166 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
167
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
168
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
169 #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
170
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
171 #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
172
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
173 #include "ngx_gcc_atomic_amd64.h"
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
174
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
175 #endif
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
176
301
744965ec6275 nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 300
diff changeset
177
1308
63fa39cf8bd0 --with-cpu-opt=sparc32 and --with-cpu-opt=sparc64
Igor Sysoev <igor@sysoev.ru>
parents: 940
diff changeset
178 #elif ( __sparc__ || __sparc || __sparcv9 )
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 #if (NGX_PTR_SIZE == 8)
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
181
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
182 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
183 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
184 #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
185
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
186 #else
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
187
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
188 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
189 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
190 #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
191
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
192 #endif
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
193
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
194 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
195
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
196
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
197 #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
198
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
199 #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
200
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
201 #include "ngx_sunpro_atomic_sparc64.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
202
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
203
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
204 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
205
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
206 #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
207
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
208 #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
209
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
210 #endif
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
211
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
212
613
c73c5c58c619 nginx-0.3.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 611
diff changeset
213 #elif ( __powerpc__ || __POWERPC__ )
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
214
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
215 #define NGX_HAVE_ATOMIC_OPS 1
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
216
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
217 #if (NGX_PTR_SIZE == 8)
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
218
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
219 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
220 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
221 #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
222
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
223 #else
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
224
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
225 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
226 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
227 #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
228
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
229 #endif
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
230
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
231 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
232
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
233
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
234 #include "ngx_gcc_atomic_ppc.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
235
939
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
236 #endif
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
237
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
238
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
239 #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
240
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
241 #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
242
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
243 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
244 typedef uint32_t ngx_atomic_uint_t;
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
245 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
246 #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
247
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
248
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
249 static ngx_inline ngx_atomic_uint_t
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
250 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
251 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
252 {
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
253 if (*lock == old) {
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
254 *lock = set;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
255 return 1;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
256 }
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
257
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
258 return 0;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
259 }
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
260
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
261
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
262 static ngx_inline ngx_atomic_int_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
263 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
264 {
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
265 ngx_atomic_int_t old;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
266
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
267 old = *value;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
268 *value += add;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
269
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
270 return old;
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
271 }
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
272
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
273 #define ngx_memory_barrier()
611
3f8a2132b93d nginx-0.3.27-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 571
diff changeset
274 #define ngx_cpu_pause()
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
275
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
276 #endif
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
277
939
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
278
611
3f8a2132b93d nginx-0.3.27-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 571
diff changeset
279 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
280
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
281 #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
282 #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
283
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 302
diff changeset
284
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
285 #endif /* _NGX_ATOMIC_H_INCLUDED_ */