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<a href="a00753.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// array allocator -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010</span>
<a name="l00004"></a>00004 <span class="comment">// Free Software Foundation, Inc.</span>
<a name="l00005"></a>00005 <span class="comment">//</span>
<a name="l00006"></a>00006 <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span>
<a name="l00007"></a>00007 <span class="comment">// software; you can redistribute it and/or modify it under the</span>
<a name="l00008"></a>00008 <span class="comment">// terms of the GNU General Public License as published by the</span>
<a name="l00009"></a>00009 <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00010"></a>00010 <span class="comment">// any later version.</span>
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="comment">// This library is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00015"></a>00015 <span class="comment">// GNU General Public License for more details.</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00018"></a>00018 <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00019"></a>00019 <span class="comment">// 3.1, as published by the Free Software Foundation.</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="comment">// You should have received a copy of the GNU General Public License and</span>
<a name="l00022"></a>00022 <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00023"></a>00023 <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span>
<a name="l00024"></a>00024 <span class="comment">// <http://www.gnu.org/licenses/>.</span>
<a name="l00025"></a>00025 <span class="comment"></span>
<a name="l00026"></a>00026 <span class="comment">/** @file ext/array_allocator.h</span>
<a name="l00027"></a>00027 <span class="comment"> * This file is a GNU extension to the Standard C++ Library.</span>
<a name="l00028"></a>00028 <span class="comment"> */</span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="preprocessor">#ifndef _ARRAY_ALLOCATOR_H</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#define _ARRAY_ALLOCATOR_H 1</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033 <span class="preprocessor">#include <<a class="code" href="a00781.html">bits/c++config.h</a>></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include <<a class="code" href="a00957.html">new</a>></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <<a class="code" href="a00883.html">bits/functexcept.h</a>></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <tr1/array></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <<a class="code" href="a00946.html">bits/move.h</a>></span>
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keyword">namespace </span>__gnu_cxx _GLIBCXX_VISIBILITY(default)
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 _GLIBCXX_BEGIN_NAMESPACE_VERSION
<a name="l00042"></a>00042
<a name="l00043"></a>00043 <span class="keyword">using</span> std::size_t;
<a name="l00044"></a>00044 <span class="keyword">using</span> std::ptrdiff_t;
<a name="l00045"></a>00045 <span class="comment"></span>
<a name="l00046"></a>00046 <span class="comment"> /// Base class.</span>
<a name="l00047"></a>00047 <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp>
<a name="l00048"></a><a class="code" href="a00031.html">00048</a> <span class="keyword">class </span><a class="code" href="a00031.html" title="Base class.">array_allocator_base</a>
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 <span class="keyword">public</span>:
<a name="l00051"></a>00051 <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> size_type;
<a name="l00052"></a>00052 <span class="keyword">typedef</span> ptrdiff_t difference_type;
<a name="l00053"></a>00053 <span class="keyword">typedef</span> _Tp* pointer;
<a name="l00054"></a>00054 <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp* const_pointer;
<a name="l00055"></a>00055 <span class="keyword">typedef</span> _Tp& reference;
<a name="l00056"></a>00056 <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp& const_reference;
<a name="l00057"></a>00057 <span class="keyword">typedef</span> _Tp value_type;
<a name="l00058"></a>00058
<a name="l00059"></a>00059 pointer
<a name="l00060"></a>00060 address(reference __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> std::__addressof(__x); }
<a name="l00061"></a>00061
<a name="l00062"></a>00062 const_pointer
<a name="l00063"></a>00063 address(const_reference __x)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> std::__addressof(__x); }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keywordtype">void</span>
<a name="l00066"></a>00066 deallocate(pointer, size_type)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 <span class="comment">// Does nothing.</span>
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070
<a name="l00071"></a>00071 size_type
<a name="l00072"></a>00072 max_size() <span class="keyword">const</span> <span class="keywordflow">throw</span>()
<a name="l00073"></a>00073 { <span class="keywordflow">return</span> size_t(-1) / <span class="keyword">sizeof</span>(_Tp); }
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span>
<a name="l00076"></a>00076 <span class="comment">// 402. wrong new expression in [some_] allocator::construct</span>
<a name="l00077"></a>00077 <span class="keywordtype">void</span>
<a name="l00078"></a>00078 construct(pointer __p, <span class="keyword">const</span> _Tp& __val)
<a name="l00079"></a>00079 { ::new((<span class="keywordtype">void</span> *)__p) value_type(__val); }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="preprocessor">#ifdef __GXX_EXPERIMENTAL_CXX0X__</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keyword">typename</span>... _Args>
<a name="l00083"></a>00083 <span class="keywordtype">void</span>
<a name="l00084"></a>00084 construct(pointer __p, _Args&&... __args)
<a name="l00085"></a>00085 { ::new((<span class="keywordtype">void</span> *)__p) _Tp(std::forward<_Args>(__args)...); }
<a name="l00086"></a>00086 <span class="preprocessor">#endif</span>
<a name="l00087"></a>00087 <span class="preprocessor"></span>
<a name="l00088"></a>00088 <span class="keywordtype">void</span>
<a name="l00089"></a>00089 destroy(pointer __p) { __p->~_Tp(); }
<a name="l00090"></a>00090 };
<a name="l00091"></a>00091 <span class="comment"></span>
<a name="l00092"></a>00092 <span class="comment"> /**</span>
<a name="l00093"></a>00093 <span class="comment"> * @brief An allocator that uses previously allocated memory.</span>
<a name="l00094"></a>00094 <span class="comment"> * This memory can be externally, globally, or otherwise allocated.</span>
<a name="l00095"></a>00095 <span class="comment"> * @ingroup allocators</span>
<a name="l00096"></a>00096 <span class="comment"> */</span>
<a name="l00097"></a>00097 <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Array = std::tr1::array<_Tp, 1> >
<a name="l00098"></a><a class="code" href="a00030.html">00098</a> <span class="keyword">class </span><a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator</a> : <span class="keyword">public</span> <a class="code" href="a00031.html" title="Base class.">array_allocator_base</a><_Tp>
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 <span class="keyword">public</span>:
<a name="l00101"></a>00101 <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> size_type;
<a name="l00102"></a>00102 <span class="keyword">typedef</span> ptrdiff_t difference_type;
<a name="l00103"></a>00103 <span class="keyword">typedef</span> _Tp* pointer;
<a name="l00104"></a>00104 <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp* const_pointer;
<a name="l00105"></a>00105 <span class="keyword">typedef</span> _Tp& reference;
<a name="l00106"></a>00106 <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp& const_reference;
<a name="l00107"></a>00107 <span class="keyword">typedef</span> _Tp value_type;
<a name="l00108"></a>00108 <span class="keyword">typedef</span> _Array array_type;
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keyword">private</span>:
<a name="l00111"></a>00111 array_type* _M_array;
<a name="l00112"></a>00112 size_type _M_used;
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="keyword">public</span>:
<a name="l00115"></a>00115 <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Array1 = _Array>
<a name="l00116"></a>00116 <span class="keyword">struct </span>rebind
<a name="l00117"></a>00117 { <span class="keyword">typedef</span> <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator<_Tp1, _Array1></a> other; };
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator</a>(array_type* __array = 0) <span class="keywordflow">throw</span>()
<a name="l00120"></a>00120 : _M_array(__array), _M_used(size_type()) { }
<a name="l00121"></a>00121
<a name="l00122"></a>00122 <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator</a>(<span class="keyword">const</span> <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator</a>& __o) <span class="keywordflow">throw</span>()
<a name="l00123"></a>00123 : _M_array(__o._M_array), _M_used(__o._M_used) { }
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Array1>
<a name="l00126"></a>00126 <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator</a>(<span class="keyword">const</span> <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator<_Tp1, _Array1></a>&) <span class="keywordflow">throw</span>()
<a name="l00127"></a>00127 : _M_array(0), _M_used(size_type()) { }
<a name="l00128"></a>00128
<a name="l00129"></a>00129 ~<a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator</a>() <span class="keywordflow">throw</span>() { }
<a name="l00130"></a>00130
<a name="l00131"></a>00131 pointer
<a name="l00132"></a>00132 allocate(size_type __n, <span class="keyword">const</span> <span class="keywordtype">void</span>* = 0)
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <span class="keywordflow">if</span> (_M_array == 0 || _M_used + __n > _M_array->size())
<a name="l00135"></a>00135 std::__throw_bad_alloc();
<a name="l00136"></a>00136 pointer __ret = _M_array->begin() + _M_used;
<a name="l00137"></a>00137 _M_used += __n;
<a name="l00138"></a>00138 <span class="keywordflow">return</span> __ret;
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 };
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Array>
<a name="l00143"></a>00143 <span class="keyword">inline</span> <span class="keywordtype">bool</span>
<a name="l00144"></a>00144 operator==(<span class="keyword">const</span> <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator<_Tp, _Array></a>&,
<a name="l00145"></a>00145 <span class="keyword">const</span> <a class="code" href="a00030.html" title="An allocator that uses previously allocated memory. This memory can be externally, globally, or otherwise allocated.">array_allocator<_Tp, _Array></a>&)
<a name="l00146"></a>00146 { <span class="keywordflow">return</span> <span class="keyword">true</span>; }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Array>
<a name="l00149"></a>00149 <span class="keyword">inline</span> <span class="keywordtype">bool</span>
<a name="l00150"></a>00150 operator!=(<span class="keyword">const</span> array_allocator<_Tp, _Array>&,
<a name="l00151"></a>00151 <span class="keyword">const</span> array_allocator<_Tp, _Array>&)
<a name="l00152"></a>00152 { <span class="keywordflow">return</span> <span class="keyword">false</span>; }
<a name="l00153"></a>00153
<a name="l00154"></a>00154 _GLIBCXX_END_NAMESPACE_VERSION
<a name="l00155"></a>00155 } <span class="comment">// namespace</span>
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="preprocessor">#endif</span>
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