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1 /*
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2 * Copyright (c) 2012-2014 Glen Joseph Fernandes
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3 * glenfe at live dot com
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4 *
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5 * Distributed under the Boost Software License,
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6 * Version 1.0. (See accompanying file LICENSE_1_0.txt
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7 * or copy at http://boost.org/LICENSE_1_0.txt)
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8 */
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9 #ifndef BOOST_SMART_PTR_MAKE_SHARED_ARRAY_HPP
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10 #define BOOST_SMART_PTR_MAKE_SHARED_ARRAY_HPP
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11
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12 #include <boost/smart_ptr/detail/array_count_impl.hpp>
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13 #include <boost/smart_ptr/detail/sp_if_array.hpp>
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14
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15 namespace boost {
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16 template<class T>
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17 inline typename boost::detail::sp_if_array<T>::type
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18 make_shared(std::size_t size) {
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19 typedef typename boost::detail::array_inner<T>::type T1;
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20 typedef typename boost::detail::array_base<T1>::type T2;
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21 typedef boost::detail::ms_allocator<T> A1;
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22 typedef boost::detail::ms_in_allocator_tag D1;
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23 std::size_t n1 = size * boost::detail::array_total<T1>::size;
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24 T1* p1 = 0;
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25 T2* p2 = 0;
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26 D1 d1;
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27 A1 a1(size, &p2);
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28 shared_ptr<T> s1(p1, d1, a1);
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29 A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter());
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30 a2->set(0);
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31 boost::detail::ms_init(p2, n1);
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32 a2->set(p2);
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33 p1 = reinterpret_cast<T1*>(p2);
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34 return shared_ptr<T>(s1, p1);
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35 }
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36
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37 template<class T>
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38 inline typename boost::detail::sp_if_size_array<T>::type
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39 make_shared() {
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40 typedef typename boost::detail::array_inner<T>::type T1;
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41 typedef typename boost::detail::array_base<T1>::type T2;
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42 typedef boost::detail::ms_allocator<T> A1;
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43 typedef boost::detail::ms_in_allocator_tag D1;
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44 enum {
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45 N = boost::detail::array_total<T>::size
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46 };
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47 T1* p1 = 0;
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48 T2* p2 = 0;
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49 D1 d1;
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50 A1 a1(&p2);
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51 shared_ptr<T> s1(p1, d1, a1);
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52 A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter());
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53 a2->set(0);
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54 boost::detail::ms_init(p2, N);
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55 a2->set(p2);
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56 p1 = reinterpret_cast<T1*>(p2);
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57 return shared_ptr<T>(s1, p1);
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58 }
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59
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60 template<class T>
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61 inline typename boost::detail::sp_if_array<T>::type
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62 make_shared(std::size_t size,
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63 const typename boost::detail::array_inner<T>::type& value) {
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64 typedef typename boost::detail::array_inner<T>::type T1;
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65 typedef typename boost::detail::array_base<T1>::type T2;
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66 typedef const T2 T3;
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67 typedef boost::detail::ms_allocator<T> A1;
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68 typedef boost::detail::ms_in_allocator_tag D1;
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69 enum {
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70 M = boost::detail::array_total<T1>::size
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71 };
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72 std::size_t n1 = M * size;
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73 T1* p1 = 0;
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74 T2* p2 = 0;
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75 T3* p3 = reinterpret_cast<T3*>(&value);
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76 D1 d1;
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77 A1 a1(size, &p2);
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78 shared_ptr<T> s1(p1, d1, a1);
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79 A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter());
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80 a2->set(0);
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81 boost::detail::ms_init<T2, M>(p2, n1, p3);
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82 a2->set(p2);
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83 p1 = reinterpret_cast<T1*>(p2);
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84 return shared_ptr<T>(s1, p1);
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85 }
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86
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87 template<class T>
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88 inline typename boost::detail::sp_if_size_array<T>::type
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89 make_shared(const typename boost::detail::array_inner<T>::type& value) {
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90 typedef typename boost::detail::array_inner<T>::type T1;
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91 typedef typename boost::detail::array_base<T1>::type T2;
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92 typedef const T2 T3;
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93 typedef boost::detail::ms_allocator<T> A1;
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94 typedef boost::detail::ms_in_allocator_tag D1;
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95 enum {
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96 M = boost::detail::array_total<T1>::size,
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97 N = boost::detail::array_total<T>::size
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98 };
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99 T1* p1 = 0;
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100 T2* p2 = 0;
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101 T3* p3 = reinterpret_cast<T3*>(&value);
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102 D1 d1;
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103 A1 a1(&p2);
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104 shared_ptr<T> s1(p1, d1, a1);
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105 A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter());
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106 a2->set(0);
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107 boost::detail::ms_init<T2, M>(p2, N, p3);
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108 a2->set(p2);
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109 p1 = reinterpret_cast<T1*>(p2);
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110 return shared_ptr<T>(s1, p1);
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111 }
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112
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113 template<class T>
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114 inline typename boost::detail::sp_if_array<T>::type
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115 make_shared_noinit(std::size_t size) {
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116 typedef typename boost::detail::array_inner<T>::type T1;
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117 typedef typename boost::detail::array_base<T1>::type T2;
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118 typedef boost::detail::ms_allocator<T> A1;
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119 typedef boost::detail::ms_in_allocator_tag D1;
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120 std::size_t n1 = size * boost::detail::array_total<T1>::size;
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121 T1* p1 = 0;
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122 T2* p2 = 0;
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123 D1 d1;
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124 A1 a1(size, &p2);
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125 shared_ptr<T> s1(p1, d1, a1);
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126 A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter());
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127 a2->set(0);
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128 boost::detail::ms_noinit(p2, n1);
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129 a2->set(p2);
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130 p1 = reinterpret_cast<T1*>(p2);
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131 return shared_ptr<T>(s1, p1);
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132 }
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133
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134 template<class T>
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135 inline typename boost::detail::sp_if_size_array<T>::type
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136 make_shared_noinit() {
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137 typedef typename boost::detail::array_inner<T>::type T1;
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138 typedef typename boost::detail::array_base<T1>::type T2;
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139 typedef boost::detail::ms_allocator<T> A1;
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140 typedef boost::detail::ms_in_allocator_tag D1;
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141 enum {
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142 N = boost::detail::array_total<T>::size
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143 };
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144 T1* p1 = 0;
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145 T2* p2 = 0;
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146 D1 d1;
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147 A1 a1(&p2);
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148 shared_ptr<T> s1(p1, d1, a1);
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149 A1* a2 = static_cast<A1*>(s1._internal_get_untyped_deleter());
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150 a2->set(0);
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151 boost::detail::ms_noinit(p2, N);
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152 a2->set(p2);
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153 p1 = reinterpret_cast<T1*>(p2);
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154 return shared_ptr<T>(s1, p1);
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155 }
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156 }
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157
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158 #endif
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