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<a href="a00260.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">// Guarded Allocation -*- 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) 2014-2015 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 bits/allocated_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{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 _ALLOCATED_PTR_H</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#define _ALLOCATED_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">#if __cplusplus &lt; 201103L</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor"># include &lt;bits/c++0xwarning.h&gt;</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor"># include &lt;<a class="code" href="a00161.html">type_traits</a>&gt;</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor"># include &lt;<a class="code" href="a00416.html">bits/ptr_traits.h</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="a14746.html">bits/alloc_traits.h</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="a01487.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;<span class="comment"></span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">  /// Non-standard RAII type for managing pointers obtained from allocators.</span></div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Alloc&gt;</div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="a04125.html">   46</a></span>&#160;    <span class="keyword">struct </span><a class="code" href="a04125.html">__allocated_ptr</a></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="keyword">using</span> pointer = <span class="keyword">typename</span> <a class="code" href="a04085.html#a8fa48f2bd3c8a0c32836872689b2ca62">allocator_traits&lt;_Alloc&gt;::pointer</a>;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;      <span class="keyword">using</span> value_type = <span class="keyword">typename</span> <a class="code" href="a04085.html#aa51dca0f6ab162918c10679e8feb57df">allocator_traits&lt;_Alloc&gt;::value_type</a>;</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">      /// Take ownership of __ptr</span></div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="a04125.html#aa6dc842b0059cbc04204b7b85c0739ed">   52</a></span>&#160;<span class="comment"></span>      <a class="code" href="a04125.html#aa6dc842b0059cbc04204b7b85c0739ed">__allocated_ptr</a>(_Alloc&amp; __a, pointer __ptr) noexcept</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;      : _M_alloc(&amp;__a), _M_ptr(__ptr)</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;      { }</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">      /// Convert __ptr to allocator&#39;s pointer type and take ownership of it</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment"></span>      <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Ptr,</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;               <span class="keyword">typename</span> _Req = _Require&lt;is_same&lt;_Ptr, value_type*&gt;&gt;&gt;</div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="a04125.html#a966c17e818aa46f93c352e1ae4bf872a">   59</a></span>&#160;      <a class="code" href="a04125.html#a966c17e818aa46f93c352e1ae4bf872a">__allocated_ptr</a>(_Alloc&amp; __a, _Ptr __ptr)</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;      : _M_alloc(&amp;__a), _M_ptr(<a class="code" href="a05741.html">pointer_traits</a>&lt;pointer&gt;::pointer_to(*__ptr))</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="comment"></span></div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">      /// Transfer ownership of the owned pointer</span></div><div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="a04125.html#a039de128ed7917b07a0a0b10e491a6af">   64</a></span>&#160;<span class="comment"></span>      <a class="code" href="a04125.html#a039de128ed7917b07a0a0b10e491a6af">__allocated_ptr</a>(<a class="code" href="a04125.html">__allocated_ptr</a>&amp;&amp; __gd) noexcept</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;      : _M_alloc(__gd._M_alloc), _M_ptr(__gd._M_ptr)</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;      { __gd._M_ptr = <span class="keyword">nullptr</span>; }</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">      /// Deallocate the owned pointer</span></div><div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="a04125.html#aa88dd0de1ff3b4586cde0906dc41645f">   69</a></span>&#160;<span class="comment"></span>      <a class="code" href="a04125.html#aa88dd0de1ff3b4586cde0906dc41645f">~__allocated_ptr</a>()</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;      {</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keywordflow">if</span> (_M_ptr != <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;          <a class="code" href="a04085.html#ae5f6b86b98b17e2ba39243ca8eaf4ee1">std::allocator_traits&lt;_Alloc&gt;::deallocate</a>(*_M_alloc, _M_ptr, 1);</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;      }</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">      /// Release ownership of the owned pointer</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"></span>      <a class="code" href="a04125.html">__allocated_ptr</a>&amp;</div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="a04125.html#af6ed2d0a405aee06f81dda8452a6e2ce">   77</a></span>&#160;      <a class="code" href="a04125.html#af6ed2d0a405aee06f81dda8452a6e2ce">operator=</a>(std::nullptr_t) noexcept</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;        _M_ptr = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;      }</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">      /// Get the address that the owned pointer refers to.</span></div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="a04125.html#a8c2790a1ba48d3f00a77feb0eda93b19">   84</a></span>&#160;<span class="comment"></span>      value_type* <span class="keyword">get</span>() { <span class="keywordflow">return</span> _S_raw_ptr(_M_ptr); }</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    <span class="keyword">private</span>:</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;      value_type* _S_raw_ptr(value_type* __ptr) { <span class="keywordflow">return</span> __ptr; }</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="keyword">template</span>&lt;<span class="keyword">typename</span> _Ptr&gt;</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        <span class="keyword">auto</span> _S_raw_ptr(_Ptr __ptr) -&gt; decltype(_S_raw_ptr(__ptr.operator-&gt;()))</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        { <span class="keywordflow">return</span> _S_raw_ptr(__ptr.operator-&gt;()); }</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;      _Alloc* _M_alloc;</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;      pointer _M_ptr;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    };</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">  /// Allocate space for a single object using __a</span></div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="comment"></span>  <span class="keyword">template</span>&lt;<span class="keyword">typename</span> _Alloc&gt;</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <a class="code" href="a04125.html">__allocated_ptr&lt;_Alloc&gt;</a></div><div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="a01487.html#a1fa3f7679aec1619e37fddf24eb70a11">  100</a></span>&#160;    <a class="code" href="a01487.html#a1fa3f7679aec1619e37fddf24eb70a11">__allocate_guarded</a>(_Alloc&amp; __a)</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="keywordflow">return</span> { __a, <a class="code" href="a04085.html#a1afbf725286c9e82ba6166dcc04b10bc">std::allocator_traits&lt;_Alloc&gt;::allocate</a>(__a, 1) };</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;_GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;} <span class="comment">// namespace std</span></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="preprocessor">#endif</span></div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="a04125_html_a966c17e818aa46f93c352e1ae4bf872a"><div class="ttname"><a href="a04125.html#a966c17e818aa46f93c352e1ae4bf872a">std::__allocated_ptr::__allocated_ptr</a></div><div class="ttdeci">__allocated_ptr(_Alloc &amp;__a, _Ptr __ptr)</div><div class="ttdoc">Convert __ptr to allocator&amp;#39;s pointer type and take ownership of it. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00059">allocated_ptr.h:59</a></div></div>
<div class="ttc" id="a01487_html_a1fa3f7679aec1619e37fddf24eb70a11"><div class="ttname"><a href="a01487.html#a1fa3f7679aec1619e37fddf24eb70a11">std::__allocate_guarded</a></div><div class="ttdeci">__allocated_ptr&lt; _Alloc &gt; __allocate_guarded(_Alloc &amp;__a)</div><div class="ttdoc">Allocate space for a single object using __a. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00100">allocated_ptr.h:100</a></div></div>
<div class="ttc" id="a04125_html_aa6dc842b0059cbc04204b7b85c0739ed"><div class="ttname"><a href="a04125.html#aa6dc842b0059cbc04204b7b85c0739ed">std::__allocated_ptr::__allocated_ptr</a></div><div class="ttdeci">__allocated_ptr(_Alloc &amp;__a, pointer __ptr) noexcept</div><div class="ttdoc">Take ownership of __ptr. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00052">allocated_ptr.h:52</a></div></div>
<div class="ttc" id="a05741_html"><div class="ttname"><a href="a05741.html">std::pointer_traits</a></div><div class="ttdoc">Uniform interface to all pointer-like types. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00132">ptr_traits.h:132</a></div></div>
<div class="ttc" id="a04085_html_a1afbf725286c9e82ba6166dcc04b10bc"><div class="ttname"><a href="a04085.html#a1afbf725286c9e82ba6166dcc04b10bc">std::allocator_traits::allocate</a></div><div class="ttdeci">static pointer allocate(_Alloc &amp;__a, size_type __n)</div><div class="ttdoc">Allocate memory. </div><div class="ttdef"><b>Definition:</b> <a href="a14746_source.html#l00359">bits/alloc_traits.h:359</a></div></div>
<div class="ttc" id="a14746_html"><div class="ttname"><a href="a14746.html">alloc_traits.h</a></div></div>
<div class="ttc" id="a04085_html_ae5f6b86b98b17e2ba39243ca8eaf4ee1"><div class="ttname"><a href="a04085.html#ae5f6b86b98b17e2ba39243ca8eaf4ee1">std::allocator_traits::deallocate</a></div><div class="ttdeci">static void deallocate(_Alloc &amp;__a, pointer __p, size_type __n)</div><div class="ttdoc">Deallocate memory. </div><div class="ttdef"><b>Definition:</b> <a href="a14746_source.html#l00385">bits/alloc_traits.h:385</a></div></div>
<div class="ttc" id="a00161_html"><div class="ttname"><a href="a00161.html">type_traits</a></div></div>
<div class="ttc" id="a04085_html_aa51dca0f6ab162918c10679e8feb57df"><div class="ttname"><a href="a04085.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="a14746_source.html#l00088">bits/alloc_traits.h:88</a></div></div>
<div class="ttc" id="a01487_html"><div class="ttname"><a href="a01487.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std. </div></div>
<div class="ttc" id="a04125_html_a039de128ed7917b07a0a0b10e491a6af"><div class="ttname"><a href="a04125.html#a039de128ed7917b07a0a0b10e491a6af">std::__allocated_ptr::__allocated_ptr</a></div><div class="ttdeci">__allocated_ptr(__allocated_ptr &amp;&amp;__gd) noexcept</div><div class="ttdoc">Transfer ownership of the owned pointer. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00064">allocated_ptr.h:64</a></div></div>
<div class="ttc" id="a04085_html_a8fa48f2bd3c8a0c32836872689b2ca62"><div class="ttname"><a href="a04085.html#a8fa48f2bd3c8a0c32836872689b2ca62">std::allocator_traits::pointer</a></div><div class="ttdeci">__pointer pointer</div><div class="ttdoc">The allocator&amp;#39;s pointer type. </div><div class="ttdef"><b>Definition:</b> <a href="a14746_source.html#l00105">bits/alloc_traits.h:105</a></div></div>
<div class="ttc" id="a04125_html_aa88dd0de1ff3b4586cde0906dc41645f"><div class="ttname"><a href="a04125.html#aa88dd0de1ff3b4586cde0906dc41645f">std::__allocated_ptr::~__allocated_ptr</a></div><div class="ttdeci">~__allocated_ptr()</div><div class="ttdoc">Deallocate the owned pointer. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00069">allocated_ptr.h:69</a></div></div>
<div class="ttc" id="a04125_html"><div class="ttname"><a href="a04125.html">std::__allocated_ptr</a></div><div class="ttdoc">Non-standard RAII type for managing pointers obtained from allocators. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00046">allocated_ptr.h:46</a></div></div>
<div class="ttc" id="a04125_html_af6ed2d0a405aee06f81dda8452a6e2ce"><div class="ttname"><a href="a04125.html#af6ed2d0a405aee06f81dda8452a6e2ce">std::__allocated_ptr::operator=</a></div><div class="ttdeci">__allocated_ptr &amp; operator=(std::nullptr_t) noexcept</div><div class="ttdoc">Release ownership of the owned pointer. </div><div class="ttdef"><b>Definition:</b> <a href="a00260_source.html#l00077">allocated_ptr.h:77</a></div></div>
<div class="ttc" id="a00416_html"><div class="ttname"><a href="a00416.html">ptr_traits.h</a></div></div>
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