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annotate src/os/unix/ngx_atomic.h @ 3497:ac281bc4c187

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use non-blocking open() not to hang on FIFO files, etc.
author Igor Sysoev <igor@sysoev.ru>
date Wed, 21 Apr 2010 15:59:36 +0000
parents 5d17022a1e88
children d620f497c50f
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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_HAVE_LIBATOMIC)
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16
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17 #define AO_REQUIRE_CAS
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18 #include <atomic_ops.h>
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19
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20 #define NGX_HAVE_ATOMIC_OPS 1
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21
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22 typedef long ngx_atomic_int_t;
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23 typedef AO_t ngx_atomic_uint_t;
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24 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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25
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26 #if (NGX_PTR_SIZE == 8)
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27 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
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28 #else
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29 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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30 #endif
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31
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32 #define ngx_atomic_cmp_set(lock, old, new) \
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33 AO_compare_and_swap(lock, old, new)
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34 #define ngx_atomic_fetch_add(value, add) \
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35 AO_fetch_and_add(value, add)
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36 #define ngx_memory_barrier() AO_nop()
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37 #define ngx_cpu_pause()
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38
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39
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40 #elif (NGX_DARWIN_ATOMIC)
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41
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42 /*
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43 * use Darwin 8 atomic(3) and barrier(3) operations
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44 * optimized at run-time for UP and SMP
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45 */
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46
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47 #include <libkern/OSAtomic.h>
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48
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49 /* "bool" conflicts with perl's CORE/handy.h */
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50 #undef bool
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51
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52
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53 #define NGX_HAVE_ATOMIC_OPS 1
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54
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55 #if (NGX_PTR_SIZE == 8)
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56
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57 typedef int64_t ngx_atomic_int_t;
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58 typedef uint64_t ngx_atomic_uint_t;
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59 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
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60
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61 #define ngx_atomic_cmp_set(lock, old, new) \
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62 OSAtomicCompareAndSwap64Barrier(old, new, (int64_t *) lock)
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63
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64 #define ngx_atomic_fetch_add(value, add) \
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65 (OSAtomicAdd64(add, (int64_t *) value) - add)
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66
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67 #else
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68
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69 typedef int32_t ngx_atomic_int_t;
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70 typedef uint32_t ngx_atomic_uint_t;
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71 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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72
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73 #define ngx_atomic_cmp_set(lock, old, new) \
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74 OSAtomicCompareAndSwap32Barrier(old, new, (int32_t *) lock)
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75
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76 #define ngx_atomic_fetch_add(value, add) \
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77 (OSAtomicAdd32(add, (int32_t *) value) - add)
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78
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79 #endif
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80
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81 #define ngx_memory_barrier() OSMemoryBarrier()
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82
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83 #define ngx_cpu_pause()
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84
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85 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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86
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87
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88 #elif (NGX_HAVE_GCC_ATOMIC)
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89
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90 /* GCC 4.1 builtin atomic operations */
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91
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92 #define NGX_HAVE_ATOMIC_OPS 1
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93
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94 typedef long ngx_atomic_int_t;
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95 typedef unsigned long ngx_atomic_uint_t;
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96
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97 #if (NGX_PTR_SIZE == 8)
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98 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
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99 #else
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100 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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101 #endif
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102
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103 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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104
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105
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106 #define ngx_atomic_cmp_set(lock, old, set) \
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107 __sync_bool_compare_and_swap(lock, old, set)
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108
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109 #define ngx_atomic_fetch_add(value, add) \
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110 __sync_fetch_and_add(value, add)
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111
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112 #define ngx_memory_barrier() __sync_synchronize()
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113
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114 #if ( __i386__ || __i386 || __amd64__ || __amd64 )
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115 #define ngx_cpu_pause() __asm__ ("pause")
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116 #else
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117 #define ngx_cpu_pause()
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118 #endif
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119
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120
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121 #elif ( __i386__ || __i386 )
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122
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123 typedef int32_t ngx_atomic_int_t;
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124 typedef uint32_t ngx_atomic_uint_t;
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125 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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126 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
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128
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129 #if ( __SUNPRO_C )
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130
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131 #define NGX_HAVE_ATOMIC_OPS 1
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diff changeset
132
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
133 ngx_atomic_uint_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
134 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
135 ngx_atomic_uint_t set);
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
136
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
137 ngx_atomic_int_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
138 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
139
1309
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
140 /*
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
141 * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
142 * so ngx_cpu_pause is declared in src/os/unix/ngx_sunpro_x86.il
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
143 */
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
144
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
145 void
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
146 ngx_cpu_pause(void);
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
147
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
148 /* the code in src/os/unix/ngx_sunpro_x86.il */
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
149
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
150 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
151
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
152
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
153 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
154
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
155 #define NGX_HAVE_ATOMIC_OPS 1
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
156
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
157 #include "ngx_gcc_atomic_x86.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
158
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
159 #endif
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
160
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
161
547
818fbd4750b9 nginx-0.2.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 525
diff changeset
162 #elif ( __amd64__ || __amd64 )
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
163
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
164 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
165 typedef uint64_t ngx_atomic_uint_t;
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
166 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
167 #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
168
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
169
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
170 #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
171
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
172 #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
173
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
174 ngx_atomic_uint_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
175 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
176 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
177
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
178 ngx_atomic_int_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
179 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
180
1309
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
181 /*
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
182 * Sun Studio 12 exits with segmentation fault on '__asm ("pause")',
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
183 * 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
184 */
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
185
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
186 void
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
187 ngx_cpu_pause(void);
08c6ee7a1b11 Sun Studio 12 compatibility
Igor Sysoev <igor@sysoev.ru>
parents: 1308
diff changeset
188
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
189 /* 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
190
563
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
191 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
9c2f3ed7a247 nginx-0.3.3-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 561
diff changeset
192
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
193
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
194 #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
195
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
196 #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
197
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
198 #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
199
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
200 #endif
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
201
301
744965ec6275 nginx-0.0.3-2004-03-31-19:26:46 import
Igor Sysoev <igor@sysoev.ru>
parents: 300
diff changeset
202
1308
63fa39cf8bd0 --with-cpu-opt=sparc32 and --with-cpu-opt=sparc64
Igor Sysoev <igor@sysoev.ru>
parents: 940
diff changeset
203 #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
204
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
205 #if (NGX_PTR_SIZE == 8)
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
206
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
207 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
208 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
209 #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
210
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
211 #else
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
212
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
213 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
214 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
215 #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
216
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
217 #endif
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
218
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
219 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
220
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
221
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
222 #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
223
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
224 #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
225
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
226 #include "ngx_sunpro_atomic_sparc64.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
227
425
bd39260a1383 nginx-0.0.10-2004-09-14-19:55:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 373
diff changeset
228
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
229 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
230
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
231 #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
232
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
233 #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
234
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
235 #endif
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
236
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
237
613
c73c5c58c619 nginx-0.3.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 611
diff changeset
238 #elif ( __powerpc__ || __POWERPC__ )
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
239
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
240 #define NGX_HAVE_ATOMIC_OPS 1
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
241
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
242 #if (NGX_PTR_SIZE == 8)
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
243
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
244 typedef int64_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
245 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
246 #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
247
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
248 #else
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
249
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
250 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
251 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
252 #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
253
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
254 #endif
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
255
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
256 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
257
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
258
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
259 #include "ngx_gcc_atomic_ppc.h"
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
260
939
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
261 #endif
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
262
493
975f62e77f02 nginx-0.1.21-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 444
diff changeset
263
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
264 #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
265
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
266 #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
267
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
268 typedef int32_t ngx_atomic_int_t;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
269 typedef uint32_t ngx_atomic_uint_t;
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
270 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
271 #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
272
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
273
495
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
274 static ngx_inline ngx_atomic_uint_t
fc9909c369b2 nginx-0.1.22-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 493
diff changeset
275 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
276 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
277 {
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
278 if (*lock == old) {
561
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
279 *lock = set;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
280 return 1;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
281 }
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
282
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
283 return 0;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
284 }
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
285
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
286
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
287 static ngx_inline ngx_atomic_int_t
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
288 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
289 {
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
290 ngx_atomic_int_t old;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
291
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
292 old = *value;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
293 *value += add;
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
294
e48ebafc6939 nginx-0.3.2-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 551
diff changeset
295 return old;
435
5cdc4838d4e8 nginx-0.0.11-2004-09-22-20:18:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 433
diff changeset
296 }
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
297
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
298 #define ngx_memory_barrier()
611
3f8a2132b93d nginx-0.3.27-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 571
diff changeset
299 #define ngx_cpu_pause()
571
458b6c3fea65 nginx-0.3.7-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 563
diff changeset
300
266
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
parents: 213
diff changeset
301 #endif
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
302
939
782cf4c13b8d use MacOSX atomic(3) and barrier(3) operations
Igor Sysoev <igor@sysoev.ru>
parents: 613
diff changeset
303
611
3f8a2132b93d nginx-0.3.27-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 571
diff changeset
304 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
305
371
780e93985b93 nginx-0.0.7-2004-06-28-20:05:02 import
Igor Sysoev <igor@sysoev.ru>
parents: 370
diff changeset
306 #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
307 #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
308
54f76b0b8dca nginx-0.0.7-2004-06-27-22:01:57 import
Igor Sysoev <igor@sysoev.ru>
parents: 302
diff changeset
309
212
679f60139863 nginx-0.0.1-2003-12-19-11:15:11 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
310 #endif /* _NGX_ATOMIC_H_INCLUDED_ */