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<div class="title">malloc_allocator.h</div> </div>
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<a href="a01299.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">// Allocator that wraps "C" malloc -*- 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) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// 2010, 2011</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// Free Software Foundation, Inc.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</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="l00008"></a><span class="lineno"> 8</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// any later version.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// GNU General Public License for more details.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">/** @file ext/malloc_allocator.h</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * This file is a GNU extension to the Standard C++ Library.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#ifndef _MALLOC_ALLOCATOR_H</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span><span class="preprocessor">#define _MALLOC_ALLOCATOR_H 1</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="a01093.html">cstdlib</a>></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="a01323.html">new</a>></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a01200.html">bits/functexcept.h</a>></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="a01312.html">bits/move.h</a>></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span>__gnu_cxx _GLIBCXX_VISIBILITY(default)</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> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">using</span> std::size_t;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">using</span> std::ptrdiff_t;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> /**</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * @brief An allocator that uses malloc.</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * @ingroup allocators</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * This is precisely the allocator defined in the C++ Standard. </span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * - all allocation calls malloc</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * - all deallocation calls free</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="code" href="a00055.html"> 55</a></span>  <span class="keyword">class </span><a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator</a></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> size_type;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">typedef</span> ptrdiff_t difference_type;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">typedef</span> _Tp* pointer;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp* const_pointer;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">typedef</span> _Tp& reference;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp& const_reference;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">typedef</span> _Tp value_type;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">struct </span>rebind</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  { <span class="keyword">typedef</span> <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator<_Tp1></a> other; };</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator</a>() _GLIBCXX_USE_NOEXCEPT { }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator</a>(<span class="keyword">const</span> <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator</a>&) _GLIBCXX_USE_NOEXCEPT { }</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">template</span><<span class="keyword">typename</span> _Tp1></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator</a>(<span class="keyword">const</span> <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator<_Tp1></a>&)</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  _GLIBCXX_USE_NOEXCEPT { }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  ~<a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator</a>() _GLIBCXX_USE_NOEXCEPT { }</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>  pointer</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  address(reference __x) <span class="keyword">const</span> _GLIBCXX_NOEXCEPT</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  { <span class="keywordflow">return</span> <a class="code" href="a01643.html#gad66b096e6b2754b94943e989481dca57" title="Same as C++11 std::addressof.">std::__addressof</a>(__x); }</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>  const_pointer</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  address(const_reference __x) <span class="keyword">const</span> _GLIBCXX_NOEXCEPT</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  { <span class="keywordflow">return</span> <a class="code" href="a01643.html#gad66b096e6b2754b94943e989481dca57" title="Same as C++11 std::addressof.">std::__addressof</a>(__x); }</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="comment">// NB: __n is permitted to be 0. The C++ standard says nothing</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// about what the return value is when __n == 0.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  pointer</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  allocate(size_type __n, <span class="keyword">const</span> <span class="keywordtype">void</span>* = 0)</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (__n > this->max_size())</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  std::__throw_bad_alloc();</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>  pointer __ret = <span class="keyword">static_cast<</span>_Tp*<span class="keyword">></span>(std::malloc(__n * <span class="keyword">sizeof</span>(_Tp)));</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span> (!__ret)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  std::__throw_bad_alloc();</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> __ret;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</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>  <span class="comment">// __p is not permitted to be a null pointer.</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">void</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  deallocate(pointer __p, size_type)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  { std::free(static_cast<void*>(__p)); }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  size_type</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  max_size() <span class="keyword">const</span> _GLIBCXX_USE_NOEXCEPT </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  { <span class="keywordflow">return</span> size_t(-1) / <span class="keyword">sizeof</span>(_Tp); }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Up, <span class="keyword">typename</span>... _Args></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">void</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  construct(_Up* __p, _Args&&... __args)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  { ::new((<span class="keywordtype">void</span> *)__p) _Up(std::forward<_Args>(__args)...); }</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Up></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordtype">void</span> </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  destroy(_Up* __p) { __p->~_Up(); }</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor"></span> <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// 402. wrong new expression in [some_] allocator::construct</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">void</span> </div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  construct(pointer __p, <span class="keyword">const</span> _Tp& __val) </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  { ::new((<span class="keywordtype">void</span> *)__p) value_type(__val); }</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </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>  destroy(pointer __p) { __p->~_Tp(); }</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor"></span> };</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> _Tp></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  operator==(<span class="keyword">const</span> <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator<_Tp></a>&, <span class="keyword">const</span> <a class="code" href="a00055.html" title="An allocator that uses malloc.This is precisely the allocator defined in the C++ Standard.">malloc_allocator<_Tp></a>&)</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  { <span class="keywordflow">return</span> <span class="keyword">true</span>; }</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  operator!=(<span class="keyword">const</span> malloc_allocator<_Tp>&, <span class="keyword">const</span> malloc_allocator<_Tp>&)</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  { <span class="keywordflow">return</span> <span class="keyword">false</span>; }</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> _GLIBCXX_END_NAMESPACE_VERSION</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> } <span class="comment">// namespace</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> <span class="preprocessor">#endif</span></div>
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