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<div class="title">experimental/bits/shared_ptr.h</div>  </div>
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<a href="a17115.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">// Experimental shared_ptr with array support -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;</div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">// Copyright (C) 2015-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// This file is part of the GNU ISO C++ Library.  This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">// 3.1, as published by the Free Software Foundation.</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">// &lt;http://www.gnu.org/licenses/&gt;.</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment">/** @file experimental/bits/shared_ptr.h</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> *  This is an internal header file, included by other library headers.</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> *  Do not attempt to use it directly. @headername{experimental/memory}</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#ifndef _GLIBCXX_EXPERIMENTAL_SHARED_PTR_H</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#define _GLIBCXX_EXPERIMENTAL_SHARED_PTR_H 1</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#pragma GCC system_header</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#if __cplusplus &gt;= 201402L</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="a00107.html">memory</a>&gt;</span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#include &lt;<a class="code" href="a17214.html">experimental/type_traits</a>&gt;</span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">namespace </span><a class="code" href="a01541.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;{</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;_GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">namespace </span>experimental</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;{</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="keyword">inline</span> <span class="keyword">namespace </span>fundamentals_v2</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;{</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;  <span class="comment">// 8.2.1</span></div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt; <span class="keyword">class </span>shared_ptr;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt; <span class="keyword">class </span>weak_ptr;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt; <span class="keyword">class </span>enable_shared_from_this;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp, <span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    constexpr <span class="keywordtype">bool</span> __sp_compatible_v</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;      = std::__sp_compatible_with&lt;_Yp*, _Tp*&gt;::value;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Yp&gt;</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    constexpr <span class="keywordtype">bool</span> __sp_is_constructible_v</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;      = std::__sp_is_constructible&lt;_Tp, _Yp&gt;::value;</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keyword">class </span>shared_ptr : <span class="keyword">public</span> __shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    {</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;      <span class="keyword">using</span> _Base_type = __shared_ptr&lt;_Tp&gt;;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;      <span class="keyword">using</span> element_type = <span class="keyword">typename</span> _Base_type::element_type;</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keyword">private</span>:</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;      <span class="comment">// Constraint for construction from a pointer of type _Yp*:</span></div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp&gt;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <span class="keyword">using</span> _SafeConv = enable_if_t&lt;__sp_is_constructible_v&lt;_Tp, _Yp&gt;&gt;;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Res = <span class="keywordtype">void</span>&gt;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="keyword">using</span> _Compatible</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;          = enable_if_t&lt;__sp_compatible_v&lt;_Tp1, _Tp&gt;, _Res&gt;;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Del,</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;               <span class="keyword">typename</span> _Ptr = <span class="keyword">typename</span> unique_ptr&lt;_Tp1, _Del&gt;::pointer,</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;               <span class="keyword">typename</span> _Res = <span class="keywordtype">void</span>&gt;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <span class="keyword">using</span> _UniqCompatible = <a class="code" href="a01479.html#gaccc2a55dff256e901d69f67ef213d12c">enable_if_t</a>&lt;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;          __sp_compatible_v&lt;_Tp1, _Tp&gt;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;          &amp;&amp; experimental::is_convertible_v&lt;_Ptr, element_type*&gt;,</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;          _Res&gt;;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;      <span class="comment">// 8.2.1.1, shared_ptr constructors</span></div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;      constexpr shared_ptr() noexcept = default;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;      template&lt;typename _Tp1, typename = _SafeConv&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        explicit</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        shared_ptr(_Tp1* __p) : _Base_type(__p)</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        { _M_enable_shared_from_this_with(__p); }</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Deleter, <span class="keyword">typename</span> = _SafeConv&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        shared_ptr(_Tp1* __p, _Deleter __d)</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        : _Base_type(__p, __d)</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        { _M_enable_shared_from_this_with(__p); }</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Deleter, <span class="keyword">typename</span> _Alloc,</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;               <span class="keyword">typename</span> = _SafeConv&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        shared_ptr(_Tp1* __p, _Deleter __d, _Alloc __a)</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        : _Base_type(__p, __d, __a)</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        { _M_enable_shared_from_this_with(__p); }</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Deleter&gt;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        shared_ptr(nullptr_t __p, _Deleter __d)</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        : _Base_type(__p, __d) { }</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Deleter, <span class="keyword">typename</span> _Alloc&gt;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        shared_ptr(nullptr_t __p, _Deleter __d, _Alloc __a)</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        : _Base_type(__p, __d, __a) { }</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        shared_ptr(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r, element_type* __p) noexcept</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        : _Base_type(__r, __p) { }</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;      shared_ptr(<span class="keyword">const</span> shared_ptr&amp; __r) noexcept</div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        : _Base_type(__r) { }</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        shared_ptr(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        : _Base_type(__r) { }</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;      shared_ptr(shared_ptr&amp;&amp; __r) noexcept</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;      : _Base_type(std::move(__r)) { }</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        shared_ptr(shared_ptr&lt;_Tp1&gt;&amp;&amp; __r) noexcept</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;        : _Base_type(std::move(__r)) { }</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        <span class="keyword">explicit</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        shared_ptr(<span class="keyword">const</span> weak_ptr&lt;_Tp1&gt;&amp; __r)</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        : _Base_type(__r) { }</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="preprocessor">#if _GLIBCXX_USE_DEPRECATED</span></div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        shared_ptr(<a class="code" href="a08455.html">std::auto_ptr&lt;_Tp1&gt;</a>&amp;&amp; __r)</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        : _Base_type(<a class="code" href="a01541.html">std</a>::move(__r))</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        { _M_enable_shared_from_this_with(static_cast&lt;_Tp1*&gt;(this-&gt;get())); }</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Del,</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;               <span class="keyword">typename</span> = _UniqCompatible&lt;_Tp1, _Del&gt;&gt;</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;        shared_ptr(unique_ptr&lt;_Tp1, _Del&gt;&amp;&amp; __r)</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;        : _Base_type(<a class="code" href="a01541.html">std</a>::move(__r))</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        {</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;          <span class="comment">// XXX assume conversion from __r.get() to this-&gt;get() to __elem_t*</span></div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;          <span class="comment">// is a round trip, which might not be true in all cases.</span></div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;          <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> unique_ptr&lt;_Tp1, _Del&gt;::element_type;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;          _M_enable_shared_from_this_with(static_cast&lt;__elem_t*&gt;(this-&gt;get()));</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        }</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;      constexpr shared_ptr(nullptr_t __p)</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;      : _Base_type(__p) { }</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;      <span class="comment">// C++14 §20.8.2.2</span></div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;      ~shared_ptr() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;</div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;      <span class="comment">// C++14 §20.8.2.3</span></div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;      shared_ptr&amp; operator=(<span class="keyword">const</span> shared_ptr&amp;) noexcept = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;      <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        _Compatible&lt;_Tp1, shared_ptr&amp;&gt;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;        operator=(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        {</div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;          _Base_type::operator=(__r);</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;          <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        }</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;      shared_ptr&amp;</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;      operator=(shared_ptr&amp;&amp; __r) noexcept</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;      {</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        _Base_type::operator=(std::move(__r));</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;      }</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;      <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        _Compatible&lt;_Tp1, shared_ptr&amp;&gt;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        operator=(shared_ptr&lt;_Tp1&gt;&amp;&amp; __r) noexcept</div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        {</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;          _Base_type::operator=(std::move(__r));</div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;          <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;        }</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;<span class="preprocessor">#if _GLIBCXX_USE_DEPRECATED</span></div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        _Compatible&lt;_Tp1, shared_ptr&amp;&gt;</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        operator=(<a class="code" href="a08455.html">std::auto_ptr&lt;_Tp1&gt;</a>&amp;&amp; __r)</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        {</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;          __shared_ptr&lt;_Tp&gt;::operator=(std::move(__r));</div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;          <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;        }</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;      <span class="keyword">template</span> &lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Del&gt;</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        _UniqCompatible&lt;_Tp1, _Del, shared_ptr&amp;&gt;</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;        operator=(unique_ptr&lt;_Tp1, _Del&gt;&amp;&amp; __r)</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;        {</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;          _Base_type::operator=(std::move(__r));</div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;          <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;        }</div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;      <span class="comment">// C++14 §20.8.2.2.4</span></div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;      <span class="comment">// swap &amp; reset</span></div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;      <span class="comment">// 8.2.1.2 shared_ptr observers</span></div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;      <span class="comment">// in __shared_ptr</span></div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    <span class="keyword">private</span>:</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args&gt;</div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        shared_ptr(_Sp_make_shared_tag __tag, <span class="keyword">const</span> _Alloc&amp; __a,</div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                   _Args&amp;&amp;... __args)</div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;        : _Base_type(__tag, __a, <a class="code" href="a01541.html">std</a>::<a class="code" href="a01480.html#gacb5baec338e12b99cb6bddea7506c7c6">forward</a>&lt;_Args&gt;(__args)...)</div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        { _M_enable_shared_from_this_with(this-&gt;get()); }</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args&gt;</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;        <span class="keyword">friend</span> shared_ptr&lt;_Tp1&gt;</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;        <a class="code" href="a01475.html#ga84894e14d771a93b933577b3f8f191cc">allocate_shared</a>(<span class="keyword">const</span> _Alloc&amp; __a, _Args&amp;&amp;...  __args);</div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;      shared_ptr(<span class="keyword">const</span> weak_ptr&lt;_Tp&gt;&amp; __r, std::nothrow_t)</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;      : _Base_type(__r, <a class="code" href="a01541.html">std</a>::nothrow) { }</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;      <span class="keyword">friend</span> <span class="keyword">class </span>weak_ptr&lt;_Tp&gt;;</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp&gt;</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;        <span class="keyword">using</span> __esft_base_t =</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;          decltype(__expt_enable_shared_from_this_base(std::declval&lt;_Yp*&gt;()));</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;</div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;      <span class="comment">// Detect an accessible and unambiguous enable_shared_from_this base.</span></div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp, <span class="keyword">typename</span> = <span class="keywordtype">void</span>&gt;</div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        <span class="keyword">struct </span>__has_esft_base</div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;        : <a class="code" href="a01479.html#gaebe6729ab5488ecc76c762873d226857">false_type</a> { };</div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp&gt;</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;        <span class="keyword">struct </span>__has_esft_base&lt;_Yp, __void_t&lt;__esft_base_t&lt;_Yp&gt;&gt;&gt;</div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        : __bool_constant&lt;!is_array_v&lt;_Tp&gt;&gt; { };  <span class="comment">// ignore base for arrays</span></div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;</div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp&gt;</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;        <span class="keyword">typename</span> enable_if&lt;__has_esft_base&lt;_Yp&gt;::value&gt;::type</div><div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;        _M_enable_shared_from_this_with(<span class="keyword">const</span> _Yp* __p) noexcept</div><div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;        {</div><div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;          <span class="keywordflow">if</span> (<span class="keyword">auto</span> __base = __expt_enable_shared_from_this_base(__p))</div><div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;            {</div><div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;              __base-&gt;_M_weak_this</div><div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;                = shared_ptr&lt;_Yp&gt;(*<span class="keyword">this</span>, const_cast&lt;_Yp*&gt;(__p));</div><div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;            }</div><div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;        }</div><div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;</div><div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Yp&gt;</div><div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;        <span class="keyword">typename</span> enable_if&lt;!__has_esft_base&lt;_Yp&gt;::value&gt;::type</div><div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;        _M_enable_shared_from_this_with(<span class="keyword">const</span> _Yp*) noexcept</div><div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        { }</div><div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    };</div><div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;</div><div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;  <span class="comment">// C++14 §20.8.2.2.7 //DOING</span></div><div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2&gt;</div><div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __a,</div><div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;                    <span class="keyword">const</span> shared_ptr&lt;_Tp2&gt;&amp; __b) noexcept</div><div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;    { <span class="keywordflow">return</span> __a.get() == __b.get(); }</div><div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;</div><div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    operator==(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a, nullptr_t) noexcept</div><div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;    { <span class="keywordflow">return</span> !__a; }</div><div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;</div><div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;    operator==(nullptr_t, <span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a) noexcept</div><div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    { <span class="keywordflow">return</span> !__a; }</div><div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;</div><div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2&gt;</div><div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    operator!=(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __a,</div><div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;               <span class="keyword">const</span> shared_ptr&lt;_Tp2&gt;&amp; __b) noexcept</div><div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    { <span class="keywordflow">return</span> __a.get() != __b.get(); }</div><div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;</div><div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    operator!=(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a, nullptr_t) noexcept</div><div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    { <span class="keywordflow">return</span> (<span class="keywordtype">bool</span>)__a; }</div><div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;</div><div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    operator!=(nullptr_t, <span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a) noexcept</div><div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    { <span class="keywordflow">return</span> (<span class="keywordtype">bool</span>)__a; }</div><div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;</div><div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2&gt;</div><div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    operator&lt;(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __a,</div><div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;              <span class="keyword">const</span> shared_ptr&lt;_Tp2&gt;&amp; __b) noexcept</div><div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    {</div><div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;      <span class="keyword">using</span> __elem_t1 = <span class="keyword">typename</span> shared_ptr&lt;_Tp1&gt;::element_type;</div><div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;      <span class="keyword">using</span> __elem_t2 = <span class="keyword">typename</span> shared_ptr&lt;_Tp2&gt;::element_type;</div><div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;      <span class="keyword">using</span> _CT = common_type_t&lt;__elem_t1*, __elem_t2*&gt;;</div><div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="a07379.html">std::less&lt;_CT&gt;</a>()(__a.get(), __b.get());</div><div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    }</div><div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;</div><div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;    operator&lt;(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a, nullptr_t) noexcept</div><div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    {</div><div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="a07379.html">std::less&lt;__elem_t*&gt;</a>()(__a.get(), <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;    }</div><div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;</div><div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;    operator&lt;(nullptr_t, <span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a) noexcept</div><div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;    {</div><div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="a07379.html">std::less&lt;__elem_t*&gt;</a>()(<span class="keyword">nullptr</span>, __a.get());</div><div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;    }</div><div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;</div><div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2&gt;</div><div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;    operator&lt;=(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __a,</div><div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;               <span class="keyword">const</span> shared_ptr&lt;_Tp2&gt;&amp; __b) noexcept</div><div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    { <span class="keywordflow">return</span> !(__b &lt; __a); }</div><div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;</div><div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;    operator&lt;=(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a, nullptr_t) noexcept</div><div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    { <span class="keywordflow">return</span> !(<span class="keyword">nullptr</span> &lt; __a); }</div><div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;</div><div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    operator&lt;=(nullptr_t, <span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a) noexcept</div><div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    { <span class="keywordflow">return</span> !(__a &lt; <span class="keyword">nullptr</span>); }</div><div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;</div><div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2&gt;</div><div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;    operator&gt;(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __a,</div><div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;              <span class="keyword">const</span> shared_ptr&lt;_Tp2&gt;&amp; __b) noexcept</div><div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;    { <span class="keywordflow">return</span> (__b &lt; __a); }</div><div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;</div><div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    operator&gt;(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a, nullptr_t) noexcept</div><div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    {</div><div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="a07379.html">std::less&lt;__elem_t*&gt;</a>()(<span class="keyword">nullptr</span>, __a.get());</div><div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;    }</div><div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;</div><div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    operator&gt;(nullptr_t, <span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a) noexcept</div><div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    {</div><div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;      <span class="keywordflow">return</span> <a class="code" href="a07379.html">std::less&lt;__elem_t*&gt;</a>()(__a.get(), <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;    }</div><div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;</div><div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2&gt;</div><div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;    operator&gt;=(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __a,</div><div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;               <span class="keyword">const</span> shared_ptr&lt;_Tp2&gt;&amp; __b) noexcept</div><div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    { <span class="keywordflow">return</span> !(__a &lt; __b); }</div><div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;</div><div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;    operator&gt;=(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a, nullptr_t) noexcept</div><div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;    { <span class="keywordflow">return</span> !(__a &lt; <span class="keyword">nullptr</span>); }</div><div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;</div><div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;    operator&gt;=(nullptr_t, <span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __a) noexcept</div><div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    { <span class="keywordflow">return</span> !(<span class="keyword">nullptr</span> &lt; __a); }</div><div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;</div><div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;  <span class="comment">// C++14 §20.8.2.2.8</span></div><div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;    swap(shared_ptr&lt;_Tp&gt;&amp; __a, shared_ptr&lt;_Tp&gt;&amp; __b) noexcept</div><div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;    { __a.swap(__b); }</div><div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;</div><div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;  <span class="comment">// 8.2.1.3, shared_ptr casts</span></div><div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;    <span class="keyword">inline</span> shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;    static_pointer_cast(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;    {</div><div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;      <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;(__r, static_cast&lt;__elem_t*&gt;(__r.get()));</div><div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;    }</div><div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;</div><div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    <span class="keyword">inline</span> shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    dynamic_pointer_cast(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    {</div><div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;      <span class="keywordflow">if</span> (_Tp* __p = dynamic_cast&lt;__elem_t*&gt;(__r.get()))</div><div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;        <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;(__r, __p);</div><div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;      <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;();</div><div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    }</div><div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;</div><div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;    <span class="keyword">inline</span> shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;    const_pointer_cast(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;    {</div><div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;      <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;(__r, const_cast&lt;__elem_t*&gt;(__r.get()));</div><div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;    }</div><div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;</div><div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;    <span class="keyword">inline</span> shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;    reinterpret_pointer_cast(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;    {</div><div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;      <span class="keyword">using</span> __elem_t = <span class="keyword">typename</span> shared_ptr&lt;_Tp&gt;::element_type;</div><div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;      <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;(__r, reinterpret_cast&lt;__elem_t*&gt;(__r.get()));</div><div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;    }</div><div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div><div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;  <span class="comment">// C++14 §20.8.2.3</span></div><div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    <span class="keyword">class </span>weak_ptr : <span class="keyword">public</span> __weak_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;    {</div><div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Res = <span class="keywordtype">void</span>&gt;</div><div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        <span class="keyword">using</span> _Compatible = enable_if_t&lt;__sp_compatible_v&lt;_Tp1, _Tp&gt;, _Res&gt;;</div><div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;</div><div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;      <span class="keyword">using</span> _Base_type = __weak_ptr&lt;_Tp&gt;;</div><div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;</div><div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;     <span class="keyword">public</span>:</div><div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;       constexpr weak_ptr() noexcept = default;</div><div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;</div><div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;       template&lt;typename _Tp1, typename = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;         weak_ptr(const shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;         : _Base_type(__r) { }</div><div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;</div><div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;       weak_ptr(<span class="keyword">const</span> weak_ptr&amp;) noexcept = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;</div><div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;       <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;         weak_ptr(<span class="keyword">const</span> weak_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;         : _Base_type(__r) { }</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;</div><div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;       weak_ptr(weak_ptr&amp;&amp;) noexcept = default;</div><div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;</div><div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;       template&lt;typename _Tp1, typename = _Compatible&lt;_Tp1&gt;&gt;</div><div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;         weak_ptr(weak_ptr&lt;_Tp1&gt;&amp;&amp; __r) noexcept</div><div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;         : _Base_type(<a class="code" href="a01541.html">std</a>::move(__r)) { }</div><div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;</div><div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;       weak_ptr&amp;</div><div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;       operator=(<span class="keyword">const</span> weak_ptr&amp; __r) noexcept = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;</div><div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;       <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;         _Compatible&lt;_Tp1, weak_ptr&amp;&gt;</div><div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;         operator=(<span class="keyword">const</span> weak_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;         {</div><div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;           this-&gt;_Base_type::operator=(__r);</div><div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;           <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;         }</div><div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;</div><div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;       <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;         _Compatible&lt;_Tp1, weak_ptr&amp;&gt;</div><div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;         operator=(<span class="keyword">const</span> shared_ptr&lt;_Tp1&gt;&amp; __r) noexcept</div><div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;         {</div><div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;           this-&gt;_Base_type::operator=(__r);</div><div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;           <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;         }</div><div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;</div><div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;       weak_ptr&amp;</div><div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;       operator=(weak_ptr&amp;&amp; __r) noexcept = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;</div><div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;       <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;         _Compatible&lt;_Tp1, weak_ptr&amp;&gt;</div><div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;         operator=(weak_ptr&lt;_Tp1&gt;&amp;&amp; __r) noexcept</div><div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;         {</div><div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;           this-&gt;_Base_type::operator=(std::move(__r));</div><div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;           <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;         }</div><div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;</div><div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;       shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;       <a class="code" href="a01541.html#a82fa606b1427f731ac64bb8ac49221f3">lock</a>() const noexcept</div><div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;       { <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;(*<span class="keyword">this</span>, std::nothrow); }</div><div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;</div><div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;       <span class="keyword">friend</span> <span class="keyword">class </span>enable_shared_from_this&lt;_Tp&gt;;</div><div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;    };</div><div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;</div><div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;  <span class="comment">// C++14 §20.8.2.3.6</span></div><div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;    swap(weak_ptr&lt;_Tp&gt;&amp; __a, weak_ptr&lt;_Tp&gt;&amp; __b) noexcept</div><div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;    { __a.swap(__b); }</div><div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="comment">  /// C++14 §20.8.2.2.10</span></div><div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;<span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Del, <span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;    <span class="keyword">inline</span> _Del*</div><div class="line"><a name="l00486"></a><span class="lineno"><a class="line" href="a17115.html#adc5e7f8e3a02f8ae2dbf4d5b86d90260">  486</a></span>&#160;    get_deleter(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;&amp; __p) noexcept</div><div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;    { <span class="keywordflow">return</span> std::get_deleter&lt;_Del&gt;(__p); }</div><div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;</div><div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;  <span class="comment">// C++14 §20.8.2.2.11</span></div><div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Ch, <span class="keyword">typename</span> _Tr, <span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;    <span class="keyword">inline</span> <a class="code" href="a02463.html">std::basic_ostream&lt;_Ch, _Tr&gt;</a>&amp;</div><div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;    <a class="code" href="a01541.html#a20aaa750b7ddf43635768c7b2d0385e6">operator&lt;&lt;</a>(<a class="code" href="a02463.html">std::basic_ostream&lt;_Ch, _Tr&gt;</a>&amp; __os, <span class="keyword">const</span> <a class="code" href="a06851.html">shared_ptr&lt;_Tp&gt;</a>&amp; __p)</div><div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;    {</div><div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;      __os &lt;&lt; __p.get();</div><div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;      <span class="keywordflow">return</span> __os;</div><div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;    }</div><div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;</div><div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;  <span class="comment">// C++14 §20.8.2.4</span></div><div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp = <span class="keywordtype">void</span>&gt; <span class="keyword">class </span><a class="code" href="a06863.html">owner_less</a>;</div><div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="comment">   /// Partial specialization of owner_less for shared_ptr.</span></div><div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00503"></a><span class="lineno"><a class="line" href="a09883.html">  503</a></span>&#160;    <span class="keyword">struct </span>owner_less&lt;shared_ptr&lt;_Tp&gt;&gt;</div><div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;    : <span class="keyword">public</span> _Sp_owner_less&lt;shared_ptr&lt;_Tp&gt;, weak_ptr&lt;_Tp&gt;&gt;</div><div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;    { };</div><div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;<span class="comment">  /// Partial specialization of owner_less for weak_ptr.</span></div><div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;<span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00509"></a><span class="lineno"><a class="line" href="a09887.html">  509</a></span>&#160;    <span class="keyword">struct </span>owner_less&lt;weak_ptr&lt;_Tp&gt;&gt;</div><div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;    : <span class="keyword">public</span> _Sp_owner_less&lt;weak_ptr&lt;_Tp&gt;, shared_ptr&lt;_Tp&gt;&gt;</div><div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;    { };</div><div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;</div><div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;  <span class="keyword">template</span>&lt;&gt;</div><div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;    <span class="keyword">class </span>owner_less&lt;void&gt;</div><div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;    {</div><div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Up&gt;</div><div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;        <span class="keywordtype">bool</span></div><div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;        operator()(shared_ptr&lt;_Tp&gt; <span class="keyword">const</span>&amp; __lhs,</div><div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;                   shared_ptr&lt;_Up&gt; <span class="keyword">const</span>&amp; __rhs)<span class="keyword"> const</span></div><div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;<span class="keyword">        </span>{ <span class="keywordflow">return</span> __lhs.owner_before(__rhs); }</div><div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;</div><div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Up&gt;</div><div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;        <span class="keywordtype">bool</span></div><div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;        operator()(<a class="code" href="a06851.html">shared_ptr&lt;_Tp&gt;</a> <span class="keyword">const</span>&amp; __lhs,</div><div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;                   <a class="code" href="a06859.html">weak_ptr&lt;_Up&gt;</a> <span class="keyword">const</span>&amp; __rhs)<span class="keyword"> const</span></div><div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;<span class="keyword">        </span>{ <span class="keywordflow">return</span> __lhs.owner_before(__rhs); }</div><div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;</div><div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Up&gt;</div><div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;        <span class="keywordtype">bool</span></div><div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;        operator()(<a class="code" href="a06859.html">weak_ptr&lt;_Tp&gt;</a> <span class="keyword">const</span>&amp; __lhs,</div><div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;                   <a class="code" href="a06851.html">shared_ptr&lt;_Up&gt;</a> <span class="keyword">const</span>&amp; __rhs)<span class="keyword"> const</span></div><div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;<span class="keyword">        </span>{ <span class="keywordflow">return</span> __lhs.owner_before(__rhs); }</div><div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;</div><div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Up&gt;</div><div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;        <span class="keywordtype">bool</span></div><div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;        operator()(weak_ptr&lt;_Tp&gt; <span class="keyword">const</span>&amp; __lhs,</div><div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;                   weak_ptr&lt;_Up&gt; <span class="keyword">const</span>&amp; __rhs)<span class="keyword"> const</span></div><div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;<span class="keyword">        </span>{ <span class="keywordflow">return</span> __lhs.owner_before(__rhs); }</div><div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;</div><div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;      <span class="keyword">typedef</span> <span class="keywordtype">void</span> is_transparent;</div><div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;    };</div><div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;</div><div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;   <span class="comment">// C++14 §20.8.2.6</span></div><div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;     <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;     atomic_is_lock_free(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;* __p)</div><div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;     { <span class="keywordflow">return</span> std::atomic_is_lock_free&lt;_Tp, __default_lock_policy&gt;(__p); }</div><div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;</div><div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;     shared_ptr&lt;_Tp&gt; atomic_load(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;* __p)</div><div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;     { <span class="keywordflow">return</span> std::atomic_load&lt;_Tp&gt;(__p); }</div><div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;</div><div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;     shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;     atomic_load_explicit(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;* __p, <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __mo)</div><div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;     { <span class="keywordflow">return</span> std::atomic_load_explicit&lt;_Tp&gt;(__p, __mo); }</div><div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;</div><div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;     <span class="keywordtype">void</span> atomic_store(shared_ptr&lt;_Tp&gt;* __p, shared_ptr&lt;_Tp&gt; __r)</div><div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;     { <span class="keywordflow">return</span> std::atomic_store&lt;_Tp&gt;(__p, __r); }</div><div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;</div><div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;     shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;     atomic_store_explicit(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;* __p,</div><div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;                           shared_ptr&lt;_Tp&gt; __r,</div><div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                           <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __mo)</div><div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;     { <span class="keywordflow">return</span> std::atomic_store_explicit&lt;_Tp&gt;(__p, __r, __mo); }</div><div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;</div><div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;     <span class="keywordtype">void</span> atomic_exchange(shared_ptr&lt;_Tp&gt;* __p, shared_ptr&lt;_Tp&gt; __r)</div><div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;     { <span class="keywordflow">return</span> std::atomic_exchange&lt;_Tp&gt;(__p, __r); }</div><div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;</div><div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;     shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;     atomic_exchange_explicit(<span class="keyword">const</span> shared_ptr&lt;_Tp&gt;* __p,</div><div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;                              shared_ptr&lt;_Tp&gt; __r,</div><div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;                              <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __mo)</div><div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;     { <span class="keywordflow">return</span> std::atomic_exchange_explicit&lt;_Tp&gt;(__p, __r, __mo); }</div><div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;</div><div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;     <span class="keywordtype">bool</span> atomic_compare_exchange_weak(shared_ptr&lt;_Tp&gt;* __p,</div><div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;                                       shared_ptr&lt;_Tp&gt;* __v,</div><div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;                                       shared_ptr&lt;_Tp&gt; __w)</div><div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;     { <span class="keywordflow">return</span> std::atomic_compare_exchange_weak&lt;_Tp&gt;(__p, __v, __w); }</div><div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;</div><div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;     <span class="keywordtype">bool</span> atomic_compare_exchange_strong(shared_ptr&lt;_Tp&gt;* __p,</div><div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;                                         shared_ptr&lt;_Tp&gt;* __v,</div><div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;                                         shared_ptr&lt;_Tp&gt; __w)</div><div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;     { <span class="keywordflow">return</span> std::atomic_compare_exchange_strong&lt;_Tp&gt;(__p, __v, __w); }</div><div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;</div><div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;     <span class="keywordtype">bool</span> atomic_compare_exchange_weak_explicit(shared_ptr&lt;_Tp&gt;* __p,</div><div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;                                                shared_ptr&lt;_Tp&gt;* __v,</div><div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;                                                shared_ptr&lt;_Tp&gt; __w,</div><div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;                                                <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __success,</div><div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;                                                <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __failure)</div><div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;     { <span class="keywordflow">return</span> std::atomic_compare_exchange_weak_explicit&lt;_Tp&gt;(__p, __v, __w,</div><div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;                                                              __success,</div><div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;                                                              __failure); }</div><div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;</div><div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;   <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;     <span class="keywordtype">bool</span> atomic_compare_exchange_strong_explicit(shared_ptr&lt;_Tp&gt;* __p,</div><div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;                                                  shared_ptr&lt;_Tp&gt;* __v,</div><div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;                                                  shared_ptr&lt;_Tp&gt; __w,</div><div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                                                  <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __success,</div><div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;                                                  <a class="code" href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">memory_order</a> __failure)</div><div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;     { <span class="keywordflow">return</span> std::atomic_compare_exchange_strong_explicit&lt;_Tp&gt;(__p, __v, __w,</div><div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;                                                                __success,</div><div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;                                                                __failure); }</div><div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;</div><div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;  <span class="comment">//enable_shared_from_this</span></div><div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;    <span class="keyword">class </span>enable_shared_from_this</div><div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;    {</div><div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;    <span class="keyword">protected</span>:</div><div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;      constexpr enable_shared_from_this() noexcept { }</div><div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;</div><div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;      enable_shared_from_this(<span class="keyword">const</span> enable_shared_from_this&amp;) noexcept { }</div><div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;</div><div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;      enable_shared_from_this&amp;</div><div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;      operator=(<span class="keyword">const</span> enable_shared_from_this&amp;) noexcept</div><div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;      { <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div><div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;</div><div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;      ~enable_shared_from_this() { }</div><div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;</div><div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;    <span class="keyword">public</span>:</div><div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;      shared_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;      shared_from_this()</div><div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;      { <span class="keywordflow">return</span> shared_ptr&lt;_Tp&gt;(this-&gt;_M_weak_this); }</div><div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;</div><div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;      shared_ptr&lt;const _Tp&gt;</div><div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;      shared_from_this()<span class="keyword"> const</span></div><div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;<span class="keyword">      </span>{ <span class="keywordflow">return</span> shared_ptr&lt;const _Tp&gt;(this-&gt;_M_weak_this); }</div><div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;</div><div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;      weak_ptr&lt;_Tp&gt;</div><div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;      weak_from_this() noexcept</div><div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;      { <span class="keywordflow">return</span> _M_weak_this; }</div><div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;</div><div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;      weak_ptr&lt;const _Tp&gt;</div><div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;      weak_from_this() const noexcept</div><div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;      { <span class="keywordflow">return</span> _M_weak_this; }</div><div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;</div><div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;    <span class="keyword">private</span>:</div><div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp1&gt;</div><div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;        <span class="keywordtype">void</span></div><div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;        _M_weak_assign(_Tp1* __p, <span class="keyword">const</span> __shared_count&lt;&gt;&amp; __n) <span class="keyword">const</span> noexcept</div><div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;        { _M_weak_this._M_assign(__p, __n); }</div><div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;</div><div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;      <span class="comment">// Found by ADL when this is an associated class.</span></div><div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;      <span class="keyword">friend</span> <span class="keyword">const</span> enable_shared_from_this*</div><div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;      __expt_enable_shared_from_this_base(<span class="keyword">const</span> enable_shared_from_this* __p)</div><div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;      { <span class="keywordflow">return</span> __p; }</div><div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;</div><div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;      <span class="keyword">template</span>&lt;<span class="keyword">typename</span>&gt;</div><div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;        <span class="keyword">friend</span> <span class="keyword">class </span>shared_ptr;</div><div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;</div><div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;      <span class="keyword">mutable</span> weak_ptr&lt;_Tp&gt; _M_weak_this;</div><div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;    };</div><div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;} <span class="comment">// namespace fundamentals_v2</span></div><div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;} <span class="comment">// namespace experimental</span></div><div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;<span class="comment">  /// std::hash specialization for shared_ptr.</span></div><div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;<span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Tp&gt;</div><div class="line"><a name="l00665"></a><span class="lineno"><a class="line" href="a09895.html">  665</a></span>&#160;    <span class="keyword">struct </span><a class="code" href="a02839.html">hash</a>&lt;experimental::<a class="code" href="a06851.html">shared_ptr</a>&lt;_Tp&gt;&gt;</div><div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;    : <span class="keyword">public</span> __hash_base&lt;size_t, experimental::shared_ptr&lt;_Tp&gt;&gt;</div><div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;    {</div><div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;      <span class="keywordtype">size_t</span></div><div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;      operator()(<span class="keyword">const</span> experimental::shared_ptr&lt;_Tp&gt;&amp; __s) <span class="keyword">const</span> noexcept</div><div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;      { <span class="keywordflow">return</span> <a class="code" href="a05483.html">std::hash&lt;_Tp*&gt;</a>()(__s.get()); }</div><div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;    };</div><div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;</div><div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;_GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;} <span class="comment">// namespace std</span></div><div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;</div><div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;<span class="preprocessor">#endif // __cplusplus &lt;= 201103L</span></div><div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;</div><div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="preprocessor">#endif // _GLIBCXX_EXPERIMENTAL_SHARED_PTR_H</span></div><div class="ttc" id="a06859_html"><div class="ttname"><a href="a06859.html">std::weak_ptr</a></div><div class="ttdoc">A smart pointer with weak semantics.</div><div class="ttdef"><b>Definition:</b> <a href="a17112_source.html#l00535">bits/shared_ptr.h:535</a></div></div>
<div class="ttc" id="a07379_html"><div class="ttname"><a href="a07379.html">std::less</a></div><div class="ttdoc">One of the comparison functors.</div><div class="ttdef"><b>Definition:</b> <a href="a00542_source.html#l00340">stl_function.h:340</a></div></div>
<div class="ttc" id="a01541_html_a82fa606b1427f731ac64bb8ac49221f3"><div class="ttname"><a href="a01541.html#a82fa606b1427f731ac64bb8ac49221f3">std::lock</a></div><div class="ttdeci">void lock(_L1 &amp;__l1, _L2 &amp;__l2, _L3 &amp;... __l3)</div><div class="ttdoc">Generic lock.</div><div class="ttdef"><b>Definition:</b> <a href="a00110_source.html#l00542">mutex:542</a></div></div>
<div class="ttc" id="a08455_html"><div class="ttname"><a href="a08455.html">std::auto_ptr</a></div><div class="ttdoc">A simple smart pointer providing strict ownership semantics.</div><div class="ttdef"><b>Definition:</b> <a href="a00722_source.html#l00089">auto_ptr.h:89</a></div></div>
<div class="ttc" id="a01475_html_ga84894e14d771a93b933577b3f8f191cc"><div class="ttname"><a href="a01475.html#ga84894e14d771a93b933577b3f8f191cc">std::allocate_shared</a></div><div class="ttdeci">shared_ptr&lt; _Tp &gt; allocate_shared(const _Alloc &amp;__a, _Args &amp;&amp;... __args)</div><div class="ttdoc">Create an object that is owned by a shared_ptr.</div><div class="ttdef"><b>Definition:</b> <a href="a17112_source.html#l00703">bits/shared_ptr.h:703</a></div></div>
<div class="ttc" id="a02839_html"><div class="ttname"><a href="a02839.html">std::hash</a></div><div class="ttdoc">Primary class template hash.</div><div class="ttdef"><b>Definition:</b> <a href="a00155_source.html#l00142">system_error:142</a></div></div>
<div class="ttc" id="a06863_html"><div class="ttname"><a href="a06863.html">std::owner_less</a></div><div class="ttdoc">Primary template owner_less.</div><div class="ttdef"><b>Definition:</b> <a href="a17112_source.html#l00616">bits/shared_ptr.h:616</a></div></div>
<div class="ttc" id="a05483_html"><div class="ttname"><a href="a05483.html">std::hash&lt; _Tp * &gt;</a></div><div class="ttdoc">Partial specializations for pointer types.</div><div class="ttdef"><b>Definition:</b> <a href="a00359_source.html#l00106">functional_hash.h:106</a></div></div>
<div class="ttc" id="a01479_html_gaccc2a55dff256e901d69f67ef213d12c"><div class="ttname"><a href="a01479.html#gaccc2a55dff256e901d69f67ef213d12c">std::enable_if_t</a></div><div class="ttdeci">typename enable_if&lt; _Cond, _Tp &gt;::type enable_if_t</div><div class="ttdoc">Alias template for enable_if.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l02294">type_traits:2294</a></div></div>
<div class="ttc" id="a01488_html_gab4f8c60de95c10793a8e3e27fcb800d9"><div class="ttname"><a href="a01488.html#gab4f8c60de95c10793a8e3e27fcb800d9">std::memory_order</a></div><div class="ttdeci">memory_order</div><div class="ttdoc">Enumeration for memory_order.</div><div class="ttdef"><b>Definition:</b> <a href="a00275_source.html#l00055">atomic_base.h:55</a></div></div>
<div class="ttc" id="a01541_html"><div class="ttname"><a href="a01541.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div>
<div class="ttc" id="a02463_html"><div class="ttname"><a href="a02463.html">std::basic_ostream</a></div><div class="ttdoc">Template class basic_ostream.</div><div class="ttdef"><b>Definition:</b> <a href="a00083_source.html#l00086">iosfwd:86</a></div></div>
<div class="ttc" id="a01541_html_a20aaa750b7ddf43635768c7b2d0385e6"><div class="ttname"><a href="a01541.html#a20aaa750b7ddf43635768c7b2d0385e6">std::operator&lt;&lt;</a></div><div class="ttdeci">std::basic_ostream&lt; _CharT, _Traits &gt; &amp; operator&lt;&lt;(std::basic_ostream&lt; _CharT, _Traits &gt; &amp;__os, const bitset&lt; _Nb &gt; &amp;__x)</div><div class="ttdoc">Global I/O operators for bitsets.</div><div class="ttdef"><b>Definition:</b> <a href="a00047_source.html#l01534">bitset:1534</a></div></div>
<div class="ttc" id="a01479_html_gaebe6729ab5488ecc76c762873d226857"><div class="ttname"><a href="a01479.html#gaebe6729ab5488ecc76c762873d226857">std::false_type</a></div><div class="ttdeci">integral_constant&lt; bool, false &gt; false_type</div><div class="ttdoc">The type used as a compile-time boolean with false value.</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00078">type_traits:78</a></div></div>
<div class="ttc" id="a06851_html"><div class="ttname"><a href="a06851.html">std::shared_ptr</a></div><div class="ttdoc">A smart pointer with reference-counted copy semantics.</div><div class="ttdef"><b>Definition:</b> <a href="a17112_source.html#l00103">bits/shared_ptr.h:103</a></div></div>
<div class="ttc" id="a01480_html_gacb5baec338e12b99cb6bddea7506c7c6"><div class="ttname"><a href="a01480.html#gacb5baec338e12b99cb6bddea7506c7c6">std::forward</a></div><div class="ttdeci">constexpr _Tp &amp;&amp; forward(typename std::remove_reference&lt; _Tp &gt;::type &amp;__t) noexcept</div><div class="ttdoc">Forward an lvalue.</div><div class="ttdef"><b>Definition:</b> <a href="a00422_source.html#l00074">move.h:74</a></div></div>
<div class="ttc" id="a17214_html"><div class="ttname"><a href="a17214.html">type_traits</a></div></div>
<div class="ttc" id="a00107_html"><div class="ttname"><a href="a00107.html">memory</a></div></div>
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