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1 #ifndef BOOST_SERIALIZATION_SHARED_PTR_HPP
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2 #define BOOST_SERIALIZATION_SHARED_PTR_HPP
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3
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4 // MS compatible compilers support #pragma once
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5 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
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6 # pragma once
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7 #endif
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8
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9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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10 // shared_ptr.hpp: serialization for boost shared pointer
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11
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12 // (C) Copyright 2004 Robert Ramey and Martin Ecker
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13 // Use, modification and distribution is subject to the Boost Software
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14 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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15 // http://www.boost.org/LICENSE_1_0.txt)
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16
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17 // See http://www.boost.org for updates, documentation, and revision history.
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18
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19 #include <cstddef> // NULL
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20
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21 #include <boost/config.hpp>
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22 #include <boost/mpl/integral_c.hpp>
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23 #include <boost/mpl/integral_c_tag.hpp>
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24
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25 #include <boost/detail/workaround.hpp>
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26 #include <boost/shared_ptr.hpp>
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27
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28 #include <boost/serialization/split_free.hpp>
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29 #include <boost/serialization/nvp.hpp>
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30 #include <boost/serialization/version.hpp>
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31 #include <boost/serialization/tracking.hpp>
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32
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33 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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34 // shared_ptr serialization traits
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35 // version 1 to distinguish from boost 1.32 version. Note: we can only do this
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36 // for a template when the compiler supports partial template specialization
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37
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38 #ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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39 namespace boost {
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40 namespace serialization{
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41 template<class T>
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42 struct version< ::boost::shared_ptr< T > > {
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43 typedef mpl::integral_c_tag tag;
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44 #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206))
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45 typedef BOOST_DEDUCED_TYPENAME mpl::int_<1> type;
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46 #else
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47 typedef mpl::int_<1> type;
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48 #endif
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49 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x570))
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50 BOOST_STATIC_CONSTANT(int, value = 1);
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51 #else
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52 BOOST_STATIC_CONSTANT(int, value = type::value);
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53 #endif
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54 };
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55 // don't track shared pointers
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56 template<class T>
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57 struct tracking_level< ::boost::shared_ptr< T > > {
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58 typedef mpl::integral_c_tag tag;
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59 #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3206))
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60 typedef BOOST_DEDUCED_TYPENAME mpl::int_< ::boost::serialization::track_never> type;
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61 #else
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62 typedef mpl::int_< ::boost::serialization::track_never> type;
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63 #endif
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64 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x570))
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65 BOOST_STATIC_CONSTANT(int, value = ::boost::serialization::track_never);
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66 #else
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67 BOOST_STATIC_CONSTANT(int, value = type::value);
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68 #endif
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69 };
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70 }}
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71 #define BOOST_SERIALIZATION_SHARED_PTR(T)
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72 #else
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73 // define macro to let users of these compilers do this
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74 #define BOOST_SERIALIZATION_SHARED_PTR(T) \
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75 BOOST_CLASS_VERSION( \
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76 ::boost::shared_ptr< T >, \
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77 1 \
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78 ) \
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79 BOOST_CLASS_TRACKING( \
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80 ::boost::shared_ptr< T >, \
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81 ::boost::serialization::track_never \
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82 ) \
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83 /**/
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84 #endif
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85
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86 namespace boost {
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87 namespace serialization{
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88
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89 struct null_deleter {
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90 void operator()(void const *) const {}
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91 };
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92
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93 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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94 // serialization for shared_ptr
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95
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96 template<class Archive, class T>
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97 inline void save(
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98 Archive & ar,
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99 const boost::shared_ptr< T > &t,
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100 const unsigned int /* file_version */
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101 ){
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102 // The most common cause of trapping here would be serializing
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103 // something like shared_ptr<int>. This occurs because int
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104 // is never tracked by default. Wrap int in a trackable type
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105 BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never));
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106 const T * t_ptr = t.get();
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107 ar << boost::serialization::make_nvp("px", t_ptr);
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108 }
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109
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110 #ifdef BOOST_SERIALIZATION_SHARED_PTR_132_HPP
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111 template<class Archive, class T>
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112 inline void load(
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113 Archive & ar,
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114 boost::shared_ptr< T > &t,
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115 const unsigned int file_version
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116 ){
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117 // The most common cause of trapping here would be serializing
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118 // something like shared_ptr<int>. This occurs because int
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119 // is never tracked by default. Wrap int in a trackable type
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120 BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never));
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121 T* r;
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122 if(file_version < 1){
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123 //ar.register_type(static_cast<
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124 // boost_132::detail::sp_counted_base_impl<T *, boost::checked_deleter< T > > *
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125 //>(NULL));
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126 ar.register_type(static_cast<
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127 boost_132::detail::sp_counted_base_impl<T *, null_deleter > *
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128 >(NULL));
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129 boost_132::shared_ptr< T > sp;
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130 ar >> boost::serialization::make_nvp("px", sp.px);
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131 ar >> boost::serialization::make_nvp("pn", sp.pn);
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132 // got to keep the sps around so the sp.pns don't disappear
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133 ar.append(sp);
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134 r = sp.get();
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135 }
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136 else{
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137 ar >> boost::serialization::make_nvp("px", r);
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138 }
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139 ar.reset(t,r);
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140 }
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141
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142 #else
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143 template<class Archive, class T>
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144 inline void load(
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145 Archive & ar,
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146 boost::shared_ptr< T > &t,
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147 const unsigned int /*file_version*/
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148 ){
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149 // The most common cause of trapping here would be serializing
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150 // something like shared_ptr<int>. This occurs because int
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151 // is never tracked by default. Wrap int in a trackable type
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152 BOOST_STATIC_ASSERT((tracking_level< T >::value != track_never));
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153 T* r;
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154 ar >> boost::serialization::make_nvp("px", r);
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155 ar.reset(t,r);
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156 }
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157 #endif
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158
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159 template<class Archive, class T>
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160 inline void serialize(
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161 Archive & ar,
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162 boost::shared_ptr< T > &t,
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163 const unsigned int file_version
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164 ){
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165 // correct shared_ptr serialization depends upon object tracking
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166 // being used.
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167 BOOST_STATIC_ASSERT(
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168 boost::serialization::tracking_level< T >::value
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169 != boost::serialization::track_never
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170 );
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171 boost::serialization::split_free(ar, t, file_version);
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172 }
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173
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174 } // namespace serialization
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175 } // namespace boost
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176
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177 #endif // BOOST_SERIALIZATION_SHARED_PTR_HPP
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