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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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5
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6
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7 #ifndef _NGX_ATOMIC_H_INCLUDED_
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8 #define _NGX_ATOMIC_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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96
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15 #if ( __i386__ || __i386 )
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16
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110
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17 typedef int32_t ngx_atomic_int_t;
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18 typedef uint32_t ngx_atomic_uint_t;
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44
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19 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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110
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20 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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42
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21
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22
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110
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23 #if ( __SUNPRO_C )
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42
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24
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110
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25 #define NGX_HAVE_ATOMIC_OPS 1
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42
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26
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110
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27 ngx_atomic_uint_t
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28 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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29 ngx_atomic_uint_t set);
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42
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30
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110
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31 ngx_atomic_int_t
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32 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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42
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33
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110
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34 /* the code in src/os/unix/ngx_sunpro_x86.il */
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42
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35
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112
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36 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
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37
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42
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38
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110
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39 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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40
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41 #define NGX_HAVE_ATOMIC_OPS 1
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42
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42
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110
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43 #include "ngx_gcc_atomic_x86.h"
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42
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44
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110
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45 #endif
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42
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46
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47
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96
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48 #elif ( __amd64__ || __amd64 )
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49
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110
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50 typedef int64_t ngx_atomic_int_t;
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51 typedef uint64_t ngx_atomic_uint_t;
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44
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52 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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110
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53 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1
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0
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54
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55
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110
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56 #if ( __SUNPRO_C )
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57
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110
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58 #define NGX_HAVE_ATOMIC_OPS 1
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59
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110
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60 ngx_atomic_uint_t
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61 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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62 ngx_atomic_uint_t set);
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63
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110
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64 ngx_atomic_int_t
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65 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add);
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66
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110
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67 /* the code in src/os/unix/ngx_sunpro_amd64.il */
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68
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112
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69 #define ngx_memory_barrier() __asm (".volatile"); __asm (".nonvolatile")
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70
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71
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110
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72 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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73
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110
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74 #define NGX_HAVE_ATOMIC_OPS 1
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75
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110
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76 #include "ngx_gcc_atomic_amd64.h"
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77
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110
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78 #endif
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79
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80
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96
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81 #elif ( __sparc__ || __sparcv9 )
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82
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110
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83 #if (NGX_PTR_SIZE == 8)
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84
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85 typedef int64_t ngx_atomic_int_t;
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86 typedef uint64_t ngx_atomic_uint_t;
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87 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1
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0
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88
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42
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89 #else
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110
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90
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91 typedef int32_t ngx_atomic_int_t;
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92 typedef uint32_t ngx_atomic_uint_t;
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93 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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94
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95 #endif
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96
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97 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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98
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99
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110
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100 #if ( __SUNPRO_C )
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101
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102 #define NGX_HAVE_ATOMIC_OPS 1
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103
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110
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104 #include "ngx_sunpro_atomic_sparc64.h"
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105
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106
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110
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107 #else /* ( __GNUC__ || __INTEL_COMPILER ) */
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108
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110
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109 #define NGX_HAVE_ATOMIC_OPS 1
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110
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110
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111 #include "ngx_gcc_atomic_sparc64.h"
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112
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110
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113 #endif
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42
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114
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115
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74
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116 #elif ( __ppc__ || __powerpc__ )
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42
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117
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118 #define NGX_HAVE_ATOMIC_OPS 1
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119
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120 #if (NGX_PTR_SIZE == 8)
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110
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121
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122 typedef int64_t ngx_atomic_int_t;
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123 typedef uint64_t ngx_atomic_uint_t;
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124 #define NGX_ATOMIC_T_LEN sizeof("-9223372036854775808") - 1
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125
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126 #else
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110
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127
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128 typedef int32_t ngx_atomic_int_t;
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129 typedef uint32_t ngx_atomic_uint_t;
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130 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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131
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132 #endif
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133
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134 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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135
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136
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110
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137 #include "ngx_gcc_atomic_ppc.h"
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138
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139
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110
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140 #endif
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141
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142
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110
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143 #if !(NGX_HAVE_ATOMIC_OPS)
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144
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145 #define NGX_HAVE_ATOMIC_OPS 0
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146
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110
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147 typedef int32_t ngx_atomic_int_t;
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148 typedef uint32_t ngx_atomic_uint_t;
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44
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149 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
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110
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150 #define NGX_ATOMIC_T_LEN sizeof("-2147483648") - 1
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0
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151
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152
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44
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153 static ngx_inline ngx_atomic_uint_t
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154 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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155 ngx_atomic_uint_t set)
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156 {
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120
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157 if (*lock == old) {
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158 *lock = set;
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159 return 1;
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160 }
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161
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162 return 0;
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163 }
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164
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165
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166 static ngx_inline ngx_atomic_int_t
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167 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
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168 {
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169 ngx_atomic_int_t old;
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170
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171 old = *value;
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172 *value += add;
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173
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174 return old;
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0
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175 }
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176
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120
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177 #define ngx_memory_barrier()
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178
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0
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179 #endif
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180
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181 void ngx_spinlock(ngx_atomic_t *lock, ngx_uint_t spin);
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182
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183 #define ngx_trylock(lock) (*(lock) == 0 && ngx_atomic_cmp_set(lock, 0, 1))
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184 #define ngx_unlock(lock) *(lock) = 0
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185
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186
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187 #endif /* _NGX_ATOMIC_H_INCLUDED_ */
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