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<div class="title">uses_allocator.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Uses-allocator Construction -*- 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) 2010-2015 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> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#ifndef _USES_ALLOCATOR_H</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#define _USES_ALLOCATOR_H 1</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#if __cplusplus < 201103L</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor"># include <<a class="code" href="a00290.html">bits/c++0x_warning.h</a>></span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#else</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="a00161.html">type_traits</a>></span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">namespace </span><a class="code" href="a01487.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"></span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> /// [allocator.tag]</span></div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="a06905.html"> 39</a></span> <span class="comment"></span> <span class="keyword">struct </span><a class="code" href="a06905.html">allocator_arg_t</a> { };</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>  constexpr <a class="code" href="a06905.html">allocator_arg_t</a> allocator_arg = <a class="code" href="a06905.html">allocator_arg_t</a>();</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">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span> = __<span class="keywordtype">void</span>_t<>></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">struct </span>__uses_allocator_helper</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  : <a class="code" href="a03485.html">false_type</a> { };</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">struct </span>__uses_allocator_helper<_Tp, _Alloc,</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  __void_t<typename _Tp::allocator_type>></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  : is_convertible<_Alloc, typename _Tp::allocator_type>::type</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  { };</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"></span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> /// [allocator.uses.trait]</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">struct </span><a class="code" href="a05397.html">uses_allocator</a></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  : __uses_allocator_helper<_Tp, _Alloc>::type</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> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">struct </span>__uses_alloc_base { };</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="keyword">struct </span>__uses_alloc0 : __uses_alloc_base</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">struct </span>_Sink { <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> <span class="keywordtype">void</span>*) { } } _M_a;</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> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">struct </span>__uses_alloc1 : __uses_alloc_base { <span class="keyword">const</span> _Alloc* _M_a; };</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="keyword">template</span><<span class="keyword">typename</span> _Alloc></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">struct </span>__uses_alloc2 : __uses_alloc_base { <span class="keyword">const</span> _Alloc* _M_a; };</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>  <span class="keyword">template</span><bool, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">struct </span>__uses_alloc;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">struct </span>__uses_alloc<true, _Tp, _Alloc, _Args...></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  : conditional<</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  is_constructible<_Tp, allocator_arg_t, _Alloc, _Args...>::value,</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  __uses_alloc1<_Alloc>,</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  __uses_alloc2<_Alloc>>::type</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  { };</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">struct </span>__uses_alloc<false, _Tp, _Alloc, _Args...></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  : __uses_alloc0 { };</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keyword">using</span> __uses_alloc_t =</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  __uses_alloc<uses_allocator<_Tp, _Alloc>::value, _Tp, _Alloc, _Args...>;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Alloc, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">inline</span> __uses_alloc_t<_Tp, _Alloc, _Args...></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  __use_alloc(<span class="keyword">const</span> _Alloc& __a)</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  __uses_alloc_t<_Tp, _Alloc, _Args...> __ret;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  __ret._M_a = &__a;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> __ret;</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> </div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> } <span class="comment">// namespace std</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="preprocessor">#endif</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="a03485_html"><div class="ttname"><a href="a03485.html">std::integral_constant</a></div><div class="ttdoc">integral_constant </div><div class="ttdef"><b>Definition:</b> <a href="a00161_source.html#l00069">type_traits:69</a></div></div>
<div class="ttc" id="a06905_html"><div class="ttname"><a href="a06905.html">std::allocator_arg_t</a></div><div class="ttdoc">[allocator.tag] </div><div class="ttdef"><b>Definition:</b> <a href="a00581_source.html#l00039">uses_allocator.h:39</a></div></div>
<div class="ttc" id="a00290_html"><div class="ttname"><a href="a00290.html">c++0x_warning.h</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="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="a05397_html"><div class="ttname"><a href="a05397.html">std::uses_allocator</a></div><div class="ttdoc">Declare uses_allocator so it can be specialized in <queue> etc. </div><div class="ttdef"><b>Definition:</b> <a href="a00392_source.html#l00071">memoryfwd.h:71</a></div></div>
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