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1 /*
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2 * Distributed under the Boost Software License, Version 1.0.
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3 * (See accompanying file LICENSE_1_0.txt or copy at
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4 * http://www.boost.org/LICENSE_1_0.txt)
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5 *
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6 * Copyright (c) 2014 Andrey Semashev
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7 */
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8 /*!
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9 * \file atomic/capabilities.hpp
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10 *
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11 * This header defines feature capabilities macros.
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12 */
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13
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14 #ifndef BOOST_ATOMIC_CAPABILITIES_HPP_INCLUDED_
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15 #define BOOST_ATOMIC_CAPABILITIES_HPP_INCLUDED_
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16
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17 #include <boost/atomic/detail/config.hpp>
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18 #include <boost/atomic/detail/platform.hpp>
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19 #include <boost/atomic/detail/int_sizes.hpp>
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20
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21 #if !defined(BOOST_ATOMIC_EMULATED)
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22 #include BOOST_ATOMIC_DETAIL_HEADER(boost/atomic/detail/caps_)
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23 #endif
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24
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25 #ifdef BOOST_HAS_PRAGMA_ONCE
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26 #pragma once
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27 #endif
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28
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29 #ifndef BOOST_ATOMIC_INT8_LOCK_FREE
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30 #define BOOST_ATOMIC_INT8_LOCK_FREE 0
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31 #endif
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32
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33 #ifndef BOOST_ATOMIC_INT16_LOCK_FREE
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34 #define BOOST_ATOMIC_INT16_LOCK_FREE 0
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35 #endif
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36
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37 #ifndef BOOST_ATOMIC_INT32_LOCK_FREE
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38 #define BOOST_ATOMIC_INT32_LOCK_FREE 0
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39 #endif
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40
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41 #ifndef BOOST_ATOMIC_INT64_LOCK_FREE
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42 #define BOOST_ATOMIC_INT64_LOCK_FREE 0
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43 #endif
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44
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45 #ifndef BOOST_ATOMIC_INT128_LOCK_FREE
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46 #define BOOST_ATOMIC_INT128_LOCK_FREE 0
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47 #endif
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48
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49
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50 #ifndef BOOST_ATOMIC_CHAR_LOCK_FREE
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51 #define BOOST_ATOMIC_CHAR_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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52 #endif
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53
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54 #ifndef BOOST_ATOMIC_CHAR16_T_LOCK_FREE
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55 #define BOOST_ATOMIC_CHAR16_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
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56 #endif
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57
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58 #ifndef BOOST_ATOMIC_CHAR32_T_LOCK_FREE
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59 #define BOOST_ATOMIC_CHAR32_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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60 #endif
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61
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62 #ifndef BOOST_ATOMIC_WCHAR_T_LOCK_FREE
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63 #if BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 1
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64 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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65 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 2
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66 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
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67 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 4
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68 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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69 #elif BOOST_ATOMIC_DETAIL_SIZEOF_WCHAR_T == 8
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70 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
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71 #else
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72 #define BOOST_ATOMIC_WCHAR_T_LOCK_FREE 0
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73 #endif
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74 #endif
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75
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76 #ifndef BOOST_ATOMIC_SHORT_LOCK_FREE
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77 #if BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 1
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78 #define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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79 #elif BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 2
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80 #define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
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81 #elif BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 4
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82 #define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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83 #elif BOOST_ATOMIC_DETAIL_SIZEOF_SHORT == 8
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84 #define BOOST_ATOMIC_SHORT_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
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85 #else
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86 #define BOOST_ATOMIC_SHORT_LOCK_FREE 0
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87 #endif
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88 #endif
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89
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90 #ifndef BOOST_ATOMIC_INT_LOCK_FREE
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91 #if BOOST_ATOMIC_DETAIL_SIZEOF_INT == 1
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92 #define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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93 #elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 2
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94 #define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
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95 #elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 4
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96 #define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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97 #elif BOOST_ATOMIC_DETAIL_SIZEOF_INT == 8
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98 #define BOOST_ATOMIC_INT_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
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99 #else
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100 #define BOOST_ATOMIC_INT_LOCK_FREE 0
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101 #endif
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102 #endif
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103
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104 #ifndef BOOST_ATOMIC_LONG_LOCK_FREE
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105 #if BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 1
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106 #define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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107 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 2
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108 #define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
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109 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 4
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110 #define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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111 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LONG == 8
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112 #define BOOST_ATOMIC_LONG_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
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113 #else
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114 #define BOOST_ATOMIC_LONG_LOCK_FREE 0
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115 #endif
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116 #endif
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117
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118 #ifndef BOOST_ATOMIC_LLONG_LOCK_FREE
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119 #if BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 1
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120 #define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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121 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 2
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122 #define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT16_LOCK_FREE
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123 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 4
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124 #define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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125 #elif BOOST_ATOMIC_DETAIL_SIZEOF_LLONG == 8
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126 #define BOOST_ATOMIC_LLONG_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
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127 #else
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128 #define BOOST_ATOMIC_LLONG_LOCK_FREE 0
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129 #endif
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130 #endif
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131
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132 #ifndef BOOST_ATOMIC_POINTER_LOCK_FREE
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133 #if (BOOST_ATOMIC_DETAIL_SIZEOF_POINTER + 0) == 8
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134 #define BOOST_ATOMIC_POINTER_LOCK_FREE BOOST_ATOMIC_INT64_LOCK_FREE
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135 #elif (BOOST_ATOMIC_DETAIL_SIZEOF_POINTER + 0) == 4
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136 #define BOOST_ATOMIC_POINTER_LOCK_FREE BOOST_ATOMIC_INT32_LOCK_FREE
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137 #else
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138 #define BOOST_ATOMIC_POINTER_LOCK_FREE 0
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139 #endif
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140 #endif
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141
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142 #define BOOST_ATOMIC_ADDRESS_LOCK_FREE BOOST_ATOMIC_POINTER_LOCK_FREE
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143
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144 #ifndef BOOST_ATOMIC_BOOL_LOCK_FREE
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145 // We store bools in 1-byte storage in all backends
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146 #define BOOST_ATOMIC_BOOL_LOCK_FREE BOOST_ATOMIC_INT8_LOCK_FREE
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147 #endif
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148
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149 #ifndef BOOST_ATOMIC_FLAG_LOCK_FREE
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150 #define BOOST_ATOMIC_FLAG_LOCK_FREE BOOST_ATOMIC_BOOL_LOCK_FREE
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151 #endif
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152
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153 #ifndef BOOST_ATOMIC_THREAD_FENCE
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154 #define BOOST_ATOMIC_THREAD_FENCE 0
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155 #endif
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156
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157 #ifndef BOOST_ATOMIC_SIGNAL_FENCE
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158 #define BOOST_ATOMIC_SIGNAL_FENCE 0
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159 #endif
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160
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161 #endif // BOOST_ATOMIC_CAPABILITIES_HPP_INCLUDED_
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