<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.15"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: memory_resource Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(initResizable); /* @license-end */</script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.15 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ $(document).ready(function(){initNavTree('a01004_source.html','');}); /* @license-end */ </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">memory_resource</div> </div> </div><!--header--> <div class="contents"> <a href="a01004.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// <experimental/memory_resource> -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <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> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <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> <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> <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> <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> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <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> <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> <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> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <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> <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> <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> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <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> <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> <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> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file experimental/memory_resource</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is a TS C++ Library header.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef _GLIBCXX_EXPERIMENTAL_MEMORY_RESOURCE</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define _GLIBCXX_EXPERIMENTAL_MEMORY_RESOURCE 1</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="a16965.html">memory</a>></span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="a00032.html">new</a>></span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="a00044.html">atomic</a>></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="a00233.html">cstddef</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a00995.html">experimental/bits/lfts_config.h</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">namespace </span><a class="code" href="a01538.html">std</a> {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">namespace </span>experimental {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">inline</span> <span class="keyword">namespace </span>fundamentals_v2 {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">namespace </span>pmr {</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#define __cpp_lib_experimental_memory_resources 201402L</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">class </span>memory_resource;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">class </span>polymorphic_allocator;</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">class </span>__resource_adaptor_imp;</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">using</span> resource_adaptor = __resource_adaptor_imp<</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">typename</span> allocator_traits<_Alloc>::template rebind_alloc<char>>;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">struct </span>__uses_allocator_construction_helper;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// Global memory resources</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  memory_resource* new_delete_resource() noexcept;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  memory_resource* null_memory_resource() noexcept;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// The default memory resource</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  memory_resource* get_default_resource() noexcept;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  memory_resource* set_default_resource(memory_resource* __r) noexcept;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// Standard memory resources</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// 8.5 Class memory_resource</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  class memory_resource</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  {</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">static</span> constexpr <span class="keywordtype">size_t</span> _S_max_align = <span class="keyword">alignof</span>(max_align_t);</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">virtual</span> ~memory_resource() { }</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">void</span>*</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  allocate(<span class="keywordtype">size_t</span> __bytes, <span class="keywordtype">size_t</span> __alignment = _S_max_align)</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  { <span class="keywordflow">return</span> do_allocate(__bytes, __alignment); }</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  deallocate(<span class="keywordtype">void</span>* __p, <span class="keywordtype">size_t</span> __bytes, <span class="keywordtype">size_t</span> __alignment = _S_max_align)</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  { <span class="keywordflow">return</span> do_deallocate(__p, __bytes, __alignment); }</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  is_equal(<span class="keyword">const</span> memory_resource& __other) <span class="keyword">const</span> noexcept</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  { <span class="keywordflow">return</span> do_is_equal(__other); }</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span>*</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  do_allocate(<span class="keywordtype">size_t</span> __bytes, <span class="keywordtype">size_t</span> __alignment) = 0;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  do_deallocate(<span class="keywordtype">void</span>* __p, <span class="keywordtype">size_t</span> __bytes, <span class="keywordtype">size_t</span> __alignment) = 0;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  do_is_equal(<span class="keyword">const</span> memory_resource& __other) <span class="keyword">const</span> noexcept = 0;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  };</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  operator==(<span class="keyword">const</span> memory_resource& __a,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">const</span> memory_resource& __b) noexcept</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  { <span class="keywordflow">return</span> &__a == &__b || __a.is_equal(__b); }</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  operator!=(<span class="keyword">const</span> memory_resource& __a,</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> memory_resource& __b) noexcept</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  { <span class="keywordflow">return</span> !(__a == __b); }</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">// 8.6 Class template polymorphic_allocator</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _Tp></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">class </span>polymorphic_allocator</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  {</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">using</span> __uses_alloc1_ = __uses_alloc1<memory_resource*>;</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">using</span> __uses_alloc2_ = __uses_alloc2<memory_resource*>;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  _M_construct(__uses_alloc0, _Tp1* __p, _Args&&... __args)</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  { ::new(__p) _Tp1(std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  _M_construct(__uses_alloc1_, _Tp1* __p, _Args&&... __args)</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  { ::new(__p) _Tp1(allocator_arg, this->resource(),</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  _M_construct(__uses_alloc2_, _Tp1* __p, _Args&&... __args)</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  { ::new(__p) _Tp1(std::forward<_Args>(__args)...,</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  this->resource()); }</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> </div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">using</span> value_type = _Tp;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  polymorphic_allocator() noexcept</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  : _M_resource(get_default_resource())</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  { }</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  polymorphic_allocator(memory_resource* __r)</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  : _M_resource(__r)</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  { _GLIBCXX_DEBUG_ASSERT(__r); }</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  polymorphic_allocator(<span class="keyword">const</span> polymorphic_allocator& __other) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Up></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  polymorphic_allocator(<span class="keyword">const</span> polymorphic_allocator<_Up>&</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  __other) noexcept</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  : _M_resource(__other.resource())</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  { }</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  polymorphic_allocator&</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  operator=(<span class="keyword">const</span> polymorphic_allocator& __rhs) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  _Tp* allocate(<span class="keywordtype">size_t</span> __n)</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  { <span class="keywordflow">return</span> static_cast<_Tp*>(_M_resource->allocate(__n * <span class="keyword">sizeof</span>(_Tp),</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">alignof</span>(_Tp))); }</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">void</span> deallocate(_Tp* __p, <span class="keywordtype">size_t</span> __n)</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  { _M_resource->deallocate(__p, __n * <span class="keyword">sizeof</span>(_Tp), <span class="keyword">alignof</span>(_Tp)); }</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span>... _Args> <span class="comment">//used here</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordtype">void</span> construct(_Tp1* __p, _Args&&... __args)</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  {</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  memory_resource* <span class="keyword">const</span> __resource = this->resource();</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">auto</span> __use_tag</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  = __use_alloc<_Tp1, memory_resource*, _Args...>(__resource);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  _M_construct(__use_tag, __p, std::forward<_Args>(__args)...);</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  }</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// Specializations for pair using piecewise construction</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2,</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">typename</span>... _Args1, <span class="keyword">typename</span>... _Args2></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordtype">void</span> construct(pair<_Tp1, _Tp2>* __p, piecewise_construct_t,</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  tuple<_Args1...> __x,</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  tuple<_Args2...> __y)</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  memory_resource* <span class="keyword">const</span> __resource = this->resource();</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">auto</span> __x_use_tag =</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  __use_alloc<_Tp1, memory_resource*, _Args1...>(__resource);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keyword">auto</span> __y_use_tag =</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  __use_alloc<_Tp2, memory_resource*, _Args2...>(__resource);</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  ::new(__p) <a class="code" href="a07764.html">std::pair<_Tp1, _Tp2></a>(<a class="code" href="a01477.html#ga4be4b722e942cd646f19614bcff7a328">piecewise_construct</a>,</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  _M_construct_p(__x_use_tag, __x),</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  _M_construct_p(__y_use_tag, __y));</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordtype">void</span> construct(pair<_Tp1,_Tp2>* __p)</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  { this->construct(__p, <a class="code" href="a01477.html#ga4be4b722e942cd646f19614bcff7a328">piecewise_construct</a>, tuple<>(), tuple<>()); }</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2, <span class="keyword">typename</span> _Up, <span class="keyword">typename</span> _Vp></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">void</span> construct(pair<_Tp1,_Tp2>* __p, _Up&& __x, _Vp&& __y)</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  { this->construct(__p, <a class="code" href="a01477.html#ga4be4b722e942cd646f19614bcff7a328">piecewise_construct</a>,</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  forward_as_tuple(std::forward<_Up>(__x)),</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  forward_as_tuple(std::forward<_Vp>(__y))); }</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2, <span class="keyword">typename</span> _Up, <span class="keyword">typename</span> _Vp></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">void</span> construct(pair<_Tp1,_Tp2>* __p, <span class="keyword">const</span> <a class="code" href="a07764.html">std::pair<_Up, _Vp></a>& __pr)</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  { this->construct(__p, <a class="code" href="a01477.html#ga4be4b722e942cd646f19614bcff7a328">piecewise_construct</a>, forward_as_tuple(__pr.<a class="code" href="a07764.html#a198b03cffc037835dc1dc01c926ce251">first</a>),</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  forward_as_tuple(__pr.<a class="code" href="a07764.html#a91179413226db12e66346d3673b7835f">second</a>)); }</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> </div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Tp2, <span class="keyword">typename</span> _Up, <span class="keyword">typename</span> _Vp></div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordtype">void</span> construct(pair<_Tp1,_Tp2>* __p, pair<_Up, _Vp>&& __pr)</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  { this->construct(__p, <a class="code" href="a01477.html#ga4be4b722e942cd646f19614bcff7a328">piecewise_construct</a>,</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  forward_as_tuple(std::forward<_Up>(__pr.<a class="code" href="a07764.html#a198b03cffc037835dc1dc01c926ce251">first</a>)),</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  forward_as_tuple(std::forward<_Vp>(__pr.<a class="code" href="a07764.html#a91179413226db12e66346d3673b7835f">second</a>))); }</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Up></div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordtype">void</span> destroy(_Up* __p)</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  { __p->~_Up(); }</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span> </div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">// Return a default-constructed allocator (no allocator propagation)</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  polymorphic_allocator select_on_container_copy_construction()<span class="keyword"> const</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> polymorphic_allocator(); }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  memory_resource* resource()<span class="keyword"> const</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_resource; }</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tuple></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  _Tuple&&</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  _M_construct_p(__uses_alloc0, _Tuple& __t)</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  { <span class="keywordflow">return</span> std::move(__t); }</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  decltype(<span class="keyword">auto</span>)</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  _M_construct_p(__uses_alloc1_ __ua, tuple<_Args...>& __t)</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  { <span class="keywordflow">return</span> <a class="code" href="a01477.html#ga23a2e3e40fefd39ffe278df7ebbd52a0">tuple_cat</a>(make_tuple(allocator_arg, *(__ua._M_a)),</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  std::move(__t)); }</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keyword">template</span><<span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  decltype(<span class="keyword">auto</span>)</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  _M_construct_p(__uses_alloc2_ __ua, tuple<_Args...>& __t)</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  { <span class="keywordflow">return</span> <a class="code" href="a01477.html#ga23a2e3e40fefd39ffe278df7ebbd52a0">tuple_cat</a>(std::move(__t), make_tuple(*(__ua._M_a))); }</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  memory_resource* _M_resource;</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  };</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> </div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _Tp1, <span class="keyword">class</span> _Tp2></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> polymorphic_allocator<_Tp1>& __a,</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keyword">const</span> polymorphic_allocator<_Tp2>& __b) noexcept</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  { <span class="keywordflow">return</span> *__a.resource() == *__b.resource(); }</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">template</span> <<span class="keyword">class</span> _Tp1, <span class="keyword">class</span> _Tp2></div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> polymorphic_allocator<_Tp1>& __a,</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keyword">const</span> polymorphic_allocator<_Tp2>& __b) noexcept</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  { <span class="keywordflow">return</span> !(__a == __b); }</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="comment">// 8.7.1 __resource_adaptor_imp</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keyword">class </span>__resource_adaptor_imp : <span class="keyword">public</span> memory_resource</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  {</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  static_assert(is_same<<span class="keywordtype">char</span>,</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">typename</span> <a class="code" href="a04636.html#aa51dca0f6ab162918c10679e8feb57df">allocator_traits<_Alloc>::value_type</a>>::value,</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="stringliteral">"Allocator's value_type is char"</span>);</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  static_assert(is_same<<span class="keywordtype">char</span>*,</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keyword">typename</span> <a class="code" href="a04636.html#a4931a231115cbef628c29b147a7d7336">allocator_traits<_Alloc>::pointer</a>>::value,</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="stringliteral">"Allocator's pointer type is value_type*"</span>);</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  static_assert(is_same<<span class="keyword">const</span> <span class="keywordtype">char</span>*,</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keyword">typename</span> <a class="code" href="a04636.html#a841791873537638dfc36c80ecc98bc48">allocator_traits<_Alloc>::const_pointer</a>>::value,</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="stringliteral">"Allocator's const_pointer type is value_type const*"</span>);</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  static_assert(is_same<<span class="keywordtype">void</span>*,</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keyword">typename</span> <a class="code" href="a04636.html#a242e530b7ee8e5d17a017983cc7cc705">allocator_traits<_Alloc>::void_pointer</a>>::value,</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="stringliteral">"Allocator's void_pointer type is void*"</span>);</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  static_assert(is_same<<span class="keyword">const</span> <span class="keywordtype">void</span>*,</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">typename</span> <a class="code" href="a04636.html#a5a9cb47519e4840523e38e45cf56bf1d">allocator_traits<_Alloc>::const_void_pointer</a>>::value,</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="stringliteral">"Allocator's const_void_pointer type is void const*"</span>);</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> </div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keyword">using</span> allocator_type = _Alloc;</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  __resource_adaptor_imp() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  __resource_adaptor_imp(<span class="keyword">const</span> __resource_adaptor_imp&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  __resource_adaptor_imp(__resource_adaptor_imp&&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keyword">explicit</span> __resource_adaptor_imp(<span class="keyword">const</span> _Alloc& __a2)</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  : _M_alloc(__a2)</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  { }</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keyword">explicit</span> __resource_adaptor_imp(_Alloc&& __a2)</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  : _M_alloc(<a class="code" href="a01538.html">std</a>::move(__a2))</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  { }</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> </div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  __resource_adaptor_imp&</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  operator=(<span class="keyword">const</span> __resource_adaptor_imp&) = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  allocator_type get_allocator() const noexcept { <span class="keywordflow">return</span> _M_alloc; }</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span>*</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  do_allocate(<span class="keywordtype">size_t</span> __bytes, <span class="keywordtype">size_t</span> __alignment)</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  {</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keyword">using</span> _Aligned_alloc = std::__alloc_rebind<_Alloc, char>;</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordtype">size_t</span> __new_size = _S_aligned_size(__bytes,</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  _S_supported(__alignment) ?</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  __alignment : _S_max_align);</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">return</span> _Aligned_alloc(_M_alloc).allocate(__new_size);</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  }</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> </div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  do_deallocate(<span class="keywordtype">void</span>* __p, <span class="keywordtype">size_t</span> __bytes, <span class="keywordtype">size_t</span> __alignment)</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  {</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keyword">using</span> _Aligned_alloc = std::__alloc_rebind<_Alloc, char>;</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="keywordtype">size_t</span> __new_size = _S_aligned_size(__bytes,</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  _S_supported(__alignment) ?</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  __alignment : _S_max_align);</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keyword">using</span> _Ptr = <span class="keyword">typename</span> <a class="code" href="a04636.html#a4931a231115cbef628c29b147a7d7336">allocator_traits<_Aligned_alloc>::pointer</a>;</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  _Aligned_alloc(_M_alloc).deallocate(static_cast<_Ptr>(__p),</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  __new_size);</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  }</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> </div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  do_is_equal(<span class="keyword">const</span> memory_resource& __other) <span class="keyword">const</span> noexcept</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  {</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keyword">auto</span> __p = dynamic_cast<const __resource_adaptor_imp*>(&__other);</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">return</span> __p ? (_M_alloc == __p->_M_alloc) : <span class="keyword">false</span>;</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  }</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> </div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// Calculate Aligned Size</span></div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// Returns a size that is larger than or equal to __size and divisible</span></div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="comment">// by __alignment, where __alignment is required to be a power of 2.</span></div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span></div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  _S_aligned_size(<span class="keywordtype">size_t</span> __size, <span class="keywordtype">size_t</span> __alignment)</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  { <span class="keywordflow">return</span> ((__size - 1)|(__alignment - 1)) + 1; }</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">// Determine whether alignment meets one of those preconditions:</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="comment">// 1. Equal to Zero</span></div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="comment">// 2. Is power of two</span></div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  _S_supported (<span class="keywordtype">size_t</span> __x)</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  { <span class="keywordflow">return</span> ((__x != 0) && !(__x & (__x - 1))); }</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span> </div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  _Alloc _M_alloc;</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  };</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span> </div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="comment">// Global memory resources</span></div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span> </div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keyword">inline</span> memory_resource*</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  new_delete_resource() noexcept</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  {</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keyword">using</span> type = resource_adaptor<std::allocator<char>>;</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keyword">alignas</span>(type) <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> __buf[<span class="keyword">sizeof</span>(type)];</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keyword">static</span> type* __r = <span class="keyword">new</span>(__buf) type;</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordflow">return</span> __r;</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  }</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="keyword">inline</span> memory_resource*</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  null_memory_resource() noexcept</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  {</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keyword">class </span>type final : <span class="keyword">public</span> memory_resource</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  {</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordtype">void</span>*</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  do_allocate(<span class="keywordtype">size_t</span>, <span class="keywordtype">size_t</span>)<span class="keyword"> override</span></div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="keyword"> </span>{ std::__throw_bad_alloc(); }</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  do_deallocate(<span class="keywordtype">void</span>*, <span class="keywordtype">size_t</span>, <span class="keywordtype">size_t</span>) noexcept <span class="keyword">override</span></div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  { }</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  do_is_equal(<span class="keyword">const</span> memory_resource& __other) <span class="keyword">const</span> noexcept <span class="keyword">override</span></div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  { <span class="keywordflow">return</span> <span class="keyword">this</span> == &__other; }</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  };</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keyword">alignas</span>(type) <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> __buf[<span class="keyword">sizeof</span>(type)];</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keyword">static</span> type* __r = <span class="keyword">new</span>(__buf) type;</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">return</span> __r;</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  }</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span> </div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="comment">// The default memory resource</span></div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span> </div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keyword">inline</span> <a class="code" href="a01716.html">std::atomic<memory_resource*></a>&</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  __get_default_resource()</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  {</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keyword">using</span> type = atomic<memory_resource*>;</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keyword">alignas</span>(type) <span class="keyword">static</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> __buf[<span class="keyword">sizeof</span>(type)];</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keyword">static</span> type* __r = <span class="keyword">new</span>(__buf) type(new_delete_resource());</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">return</span> *__r;</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keyword">inline</span> memory_resource*</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  get_default_resource() noexcept</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  { <span class="keywordflow">return</span> __get_default_resource().load(); }</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keyword">inline</span> memory_resource*</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  set_default_resource(memory_resource* __r) noexcept</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  {</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">if</span> (__r == <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  __r = new_delete_resource();</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">return</span> __get_default_resource().exchange(__r);</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  }</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span> } <span class="comment">// namespace pmr</span></div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span> } <span class="comment">// namespace fundamentals_v2</span></div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> } <span class="comment">// namespace experimental</span></div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span> </div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> } <span class="comment">// namespace std</span></div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> </div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="a01716_html"><div class="ttname"><a href="a01716.html">std::atomic</a></div><div class="ttdoc">Generic atomic type, primary class template.</div><div class="ttdef"><b>Definition:</b> <a href="a00044_source.html#l00058">atomic:58</a></div></div> <div class="ttc" id="a00044_html"><div class="ttname"><a href="a00044.html">atomic</a></div></div> <div class="ttc" id="a04636_html_aa51dca0f6ab162918c10679e8feb57df"><div class="ttname"><a href="a04636.html#aa51dca0f6ab162918c10679e8feb57df">std::allocator_traits::value_type</a></div><div class="ttdeci">_Alloc::value_type value_type</div><div class="ttdoc">The allocated type.</div><div class="ttdef"><b>Definition:</b> <a href="a16473_source.html#l00088">bits/alloc_traits.h:88</a></div></div> <div class="ttc" id="a16965_html"><div class="ttname"><a href="a16965.html">memory</a></div></div> <div class="ttc" id="a04636_html_a841791873537638dfc36c80ecc98bc48"><div class="ttname"><a href="a04636.html#a841791873537638dfc36c80ecc98bc48">std::allocator_traits::const_pointer</a></div><div class="ttdeci">typename _Ptr< __c_pointer, const value_type >::type const_pointer</div><div class="ttdoc">The allocator's const pointer type.</div><div class="ttdef"><b>Definition:</b> <a href="a16473_source.html#l00135">bits/alloc_traits.h:135</a></div></div> <div class="ttc" id="a04636_html_a4931a231115cbef628c29b147a7d7336"><div class="ttname"><a href="a04636.html#a4931a231115cbef628c29b147a7d7336">std::allocator_traits::pointer</a></div><div class="ttdeci">__detected_or_t< value_type *, __pointer, _Alloc > pointer</div><div class="ttdoc">The allocator's pointer type.</div><div class="ttdef"><b>Definition:</b> <a href="a16473_source.html#l00095">bits/alloc_traits.h:95</a></div></div> <div class="ttc" id="a00995_html"><div class="ttname"><a href="a00995.html">lfts_config.h</a></div></div> <div class="ttc" id="a01477_html_ga4be4b722e942cd646f19614bcff7a328"><div class="ttname"><a href="a01477.html#ga4be4b722e942cd646f19614bcff7a328">std::piecewise_construct</a></div><div class="ttdeci">_GLIBCXX17_INLINE constexpr piecewise_construct_t piecewise_construct</div><div class="ttdoc">piecewise_construct</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00079">stl_pair.h:79</a></div></div> <div class="ttc" id="a01538_html"><div class="ttname"><a href="a01538.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std.</div></div> <div class="ttc" id="a00032_html"><div class="ttname"><a href="a00032.html">new</a></div></div> <div class="ttc" id="a01477_html_ga23a2e3e40fefd39ffe278df7ebbd52a0"><div class="ttname"><a href="a01477.html#ga23a2e3e40fefd39ffe278df7ebbd52a0">std::tuple_cat</a></div><div class="ttdeci">constexpr auto tuple_cat(_Tpls &&... __tpls) -> typename __tuple_cat_result< _Tpls... >::__type</div><div class="ttdoc">tuple_cat</div><div class="ttdef"><b>Definition:</b> <a href="a00161_source.html#l01591">tuple:1591</a></div></div> <div class="ttc" id="a04636_html_a5a9cb47519e4840523e38e45cf56bf1d"><div class="ttname"><a href="a04636.html#a5a9cb47519e4840523e38e45cf56bf1d">std::allocator_traits::const_void_pointer</a></div><div class="ttdeci">typename _Ptr< __cv_pointer, const void >::type const_void_pointer</div><div class="ttdoc">The allocator's const void pointer type.</div><div class="ttdef"><b>Definition:</b> <a href="a16473_source.html#l00151">bits/alloc_traits.h:151</a></div></div> <div class="ttc" id="a00233_html"><div class="ttname"><a href="a00233.html">cstddef</a></div></div> <div class="ttc" id="a07764_html_a91179413226db12e66346d3673b7835f"><div class="ttname"><a href="a07764.html#a91179413226db12e66346d3673b7835f">std::pair::second</a></div><div class="ttdeci">_T2 second</div><div class="ttdoc">first is a copy of the first object</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00215">stl_pair.h:215</a></div></div> <div class="ttc" id="a07764_html_a198b03cffc037835dc1dc01c926ce251"><div class="ttname"><a href="a07764.html#a198b03cffc037835dc1dc01c926ce251">std::pair::first</a></div><div class="ttdeci">_T1 first</div><div class="ttdoc">second_type is the second bound type</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00214">stl_pair.h:214</a></div></div> <div class="ttc" id="a07764_html"><div class="ttname"><a href="a07764.html">std::pair</a></div><div class="ttdoc">Struct holding two objects of arbitrary type.</div><div class="ttdef"><b>Definition:</b> <a href="a00572_source.html#l00208">stl_pair.h:208</a></div></div> <div class="ttc" id="a04636_html_a242e530b7ee8e5d17a017983cc7cc705"><div class="ttname"><a href="a04636.html#a242e530b7ee8e5d17a017983cc7cc705">std::allocator_traits::void_pointer</a></div><div class="ttdeci">typename _Ptr< __v_pointer, void >::type void_pointer</div><div class="ttdoc">The allocator's void pointer type.</div><div class="ttdef"><b>Definition:</b> <a href="a16473_source.html#l00143">bits/alloc_traits.h:143</a></div></div> </div><!-- fragment --></div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="dir_3a83f109ff04170a1f8448445d1bdcba.html">include</a></li><li class="navelem"><a class="el" href="dir_70d4ab3a5261b72adc47eec15b413144.html">experimental</a></li><li class="navelem"><a class="el" href="a01004.html">memory_resource</a></li> <li class="footer">Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.15 </li> </ul> </div> </body> </html>