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<a href="a00965.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">// -*- 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) 2007-2018 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 terms</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// of the GNU General Public License as published by the Free Software</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Foundation; either version 3, or (at your option) any later</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// 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, but</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// 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 GNU</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// 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 parallel/sort.h</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @brief Parallel sorting algorithm switch.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * This file is a GNU parallel extension to the Standard C++ Library.</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// Written by Johannes Singler.</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">#ifndef _GLIBCXX_PARALLEL_SORT_H</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#define _GLIBCXX_PARALLEL_SORT_H 1</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="a00875.html">parallel/basic_iterator.h</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a00887.html">parallel/features.h</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <<a class="code" href="a00935.html">parallel/parallel.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="preprocessor">#if _GLIBCXX_PARALLEL_ASSERTIONS</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include <<a class="code" href="a00878.html">parallel/checkers.h</a>></span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#endif</span></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="preprocessor">#if _GLIBCXX_MERGESORT</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include <<a class="code" href="a00920.html">parallel/multiway_mergesort.h</a>></span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#endif</span></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="preprocessor">#if _GLIBCXX_QUICKSORT</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include <<a class="code" href="a00947.html">parallel/quicksort.h</a>></span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#endif</span></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="preprocessor">#if _GLIBCXX_BAL_QUICKSORT</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor">#include <<a class="code" href="a00872.html">parallel/balanced_quicksort.h</a>></span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">namespace </span><a class="code" href="a01575.html">__gnu_parallel</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="comment">//prototype</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter,</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">typename</span> _Compare, <span class="keyword">typename</span> <a class="code" href="a01575.html#a76f6cbf29b1b8d57762cce1ed9bd01a8">_Parallelism</a>></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  _Compare __comp, <a class="code" href="a01575.html#a76f6cbf29b1b8d57762cce1ed9bd01a8">_Parallelism</a> __parallelism);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment"></span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> /** </span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * @brief Choose multiway mergesort, splitting variant at run-time,</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * for parallel sorting.</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> */</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="a01575.html#a1edbc983766e29af55322f9c983277ac"> 75</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  _Compare __comp, <a class="code" href="a09679.html">multiway_mergesort_tag</a> __parallelism)</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="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</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="keywordflow">if</span>(<a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>().sort_splitting == EXACT)</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  parallel_sort_mwms<__stable, true></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  (__begin, __end, __comp, __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  parallel_sort_mwms<__stable, false></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  (__begin, __end, __comp, __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</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="comment"></span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> /** </span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * @brief Choose multiway mergesort with exact splitting,</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * for parallel sorting.</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> */</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="a01575.html#ac609a343c5522586ce1561c1390fab46"> 99</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  _Compare __comp,</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="a09683.html">multiway_mergesort_exact_tag</a> __parallelism)</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>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  parallel_sort_mwms<__stable, true></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  (__begin, __end, __comp, __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</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="comment"></span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> /** </span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> * @brief Choose multiway mergesort with splitting by sampling,</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * for parallel sorting.</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> */</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="a01575.html#a81d9cc449b9b4122d5f4471dfdf02a78"> 120</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  _Compare __comp,</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="a09687.html">multiway_mergesort_sampling_tag</a> __parallelism)</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  {</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</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>  parallel_sort_mwms<__stable, false></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  (__begin, __end, __comp, __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  }</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"></span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> /**</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * @brief Choose quicksort for parallel sorting.</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> */</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="a01575.html#aceaaa622c34d2f28ba6bf79241fcee36"> 140</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  _Compare __comp, <a class="code" href="a09691.html">quicksort_tag</a> __parallelism)</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  {</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</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>  _GLIBCXX_PARALLEL_ASSERT(__stable == <span class="keyword">false</span>);</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <a class="code" href="a01575.html#ac416a1c7e347b429bbf7a8fb17e847b2">__parallel_sort_qs</a>(__begin, __end, __comp,</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"></span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> /**</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> * @brief Choose balanced quicksort for parallel sorting.</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> */</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00161"></a><span class="lineno"><a class="line" href="a01575.html#a000f037b08d237d140dd6144a11fb73f"> 161</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  _Compare __comp, <a class="code" href="a09695.html">balanced_quicksort_tag</a> __parallelism)</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>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  _GLIBCXX_PARALLEL_ASSERT(__stable == <span class="keyword">false</span>);</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="a01575.html#a4093dd098b32542e3d3f43ebd4c6f940">__parallel_sort_qsb</a>(__begin, __end, __comp,</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"></span></div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> /** </span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * @brief Choose multiway mergesort with exact splitting,</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> * for parallel sorting.</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"> */</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00183"></a><span class="lineno"><a class="line" href="a01575.html#af2c2fb5ed2754de7c1acc336b62b57b0"> 183</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  _Compare __comp, <a class="code" href="a09647.html">default_parallel_tag</a> __parallelism)</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  {</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  __parallel_sort<__stable></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  (__begin, __end, __comp,</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <a class="code" href="a09683.html">multiway_mergesort_exact_tag</a>(__parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>()));</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment"></span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"> /**</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> * @brief Choose a parallel sorting algorithm.</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> * @param __begin Begin iterator of input sequence.</span></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> * @param __end End iterator of input sequence.</span></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> * @param __comp Comparator.</span></div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"> * @tparam __stable Sort stable.</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> * @callgraph </span></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"> */</span></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> __stable, <span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _Compare></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00203"></a><span class="lineno"><a class="line" href="a01575.html#aa47b469dd82347dd63c3996eda2e237b"> 203</a></span>  __parallel_sort(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  _Compare __comp, <a class="code" href="a09643.html">parallel_tag</a> __parallelism)</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  {</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__end - __begin)</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">typedef</span> std::iterator_traits<_RAIter> _TraitsType;</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::value_type _ValueType;</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::difference_type _DifferenceType;</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (<span class="keyword">false</span>) ;</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor">#if _GLIBCXX_MERGESORT</span></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (__stable || <a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>().sort_algorithm == MWMS)</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="keywordflow">if</span>(<a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>().sort_splitting == EXACT)</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  parallel_sort_mwms<__stable, true></div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  (__begin, __end, __comp, __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  parallel_sort_mwms<false, false></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  (__begin, __end, __comp, __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="preprocessor">#if _GLIBCXX_QUICKSORT</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>().sort_algorithm == QS)</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <a class="code" href="a01575.html#ac416a1c7e347b429bbf7a8fb17e847b2">__parallel_sort_qs</a>(__begin, __end, __comp,</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="preprocessor">#if _GLIBCXX_BAL_QUICKSORT</span></div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>().sort_algorithm == QS_BALANCED)</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="a01575.html#a4093dd098b32542e3d3f43ebd4c6f940">__parallel_sort_qsb</a>(__begin, __end, __comp,</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  __parallelism.<a class="code" href="a09643.html#a18b32829b31b902699690b750e190e59">__get_num_threads</a>());</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  __gnu_sequential::sort(__begin, __end, __comp);</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> } <span class="comment">// end namespace __gnu_parallel</span></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="preprocessor">#endif </span><span class="comment">/* _GLIBCXX_PARALLEL_SORT_H */</span><span class="preprocessor"></span></div><div class="ttc" id="a09691_html"><div class="ttname"><a href="a09691.html">__gnu_parallel::quicksort_tag</a></div><div class="ttdoc">Forces parallel sorting using unbalanced quicksort at compile time.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00155">tags.h:155</a></div></div>
<div class="ttc" id="a01575_html_a4093dd098b32542e3d3f43ebd4c6f940"><div class="ttname"><a href="a01575.html#a4093dd098b32542e3d3f43ebd4c6f940">__gnu_parallel::__parallel_sort_qsb</a></div><div class="ttdeci">void __parallel_sort_qsb(_RAIter __begin, _RAIter __end, _Compare __comp, _ThreadIndex __num_threads)</div><div class="ttdoc">Top-level quicksort routine.</div><div class="ttdef"><b>Definition:</b> <a href="a00872_source.html#l00433">balanced_quicksort.h:433</a></div></div>
<div class="ttc" id="a09647_html"><div class="ttname"><a href="a09647.html">__gnu_parallel::default_parallel_tag</a></div><div class="ttdoc">Recommends parallel execution using the default parallel algorithm.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00079">tags.h:79</a></div></div>
<div class="ttc" id="a09679_html"><div class="ttname"><a href="a09679.html">__gnu_parallel::multiway_mergesort_tag</a></div><div class="ttdoc">Forces parallel sorting using multiway mergesort at compile time.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00128">tags.h:128</a></div></div>
<div class="ttc" id="a00947_html"><div class="ttname"><a href="a00947.html">quicksort.h</a></div><div class="ttdoc">Implementation of a unbalanced parallel quicksort (in-place). This file is a GNU parallel extension t...</div></div>
<div class="ttc" id="a00935_html"><div class="ttname"><a href="a00935.html">parallel.h</a></div><div class="ttdoc">End-user include file. Provides advanced settings and tuning options. This file is a GNU parallel ext...</div></div>
<div class="ttc" id="a09643_html"><div class="ttname"><a href="a09643.html">__gnu_parallel::parallel_tag</a></div><div class="ttdoc">Recommends parallel execution at compile time, optionally using a user-specified number of threads.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00046">tags.h:46</a></div></div>
<div class="ttc" id="a09643_html_a18b32829b31b902699690b750e190e59"><div class="ttname"><a href="a09643.html#a18b32829b31b902699690b750e190e59">__gnu_parallel::parallel_tag::__get_num_threads</a></div><div class="ttdeci">_ThreadIndex __get_num_threads()</div><div class="ttdoc">Find out desired number of threads.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00063">tags.h:63</a></div></div>
<div class="ttc" id="a09687_html"><div class="ttname"><a href="a09687.html">__gnu_parallel::multiway_mergesort_sampling_tag</a></div><div class="ttdoc">Forces parallel sorting using multiway mergesort with splitting by sampling at compile time.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00146">tags.h:146</a></div></div>
<div class="ttc" id="a01575_html_ac416a1c7e347b429bbf7a8fb17e847b2"><div class="ttname"><a href="a01575.html#ac416a1c7e347b429bbf7a8fb17e847b2">__gnu_parallel::__parallel_sort_qs</a></div><div class="ttdeci">void __parallel_sort_qs(_RAIter __begin, _RAIter __end, _Compare __comp, _ThreadIndex __num_threads)</div><div class="ttdoc">Unbalanced quicksort main call.</div><div class="ttdef"><b>Definition:</b> <a href="a00947_source.html#l00154">quicksort.h:154</a></div></div>
<div class="ttc" id="a00887_html"><div class="ttname"><a href="a00887.html">features.h</a></div><div class="ttdoc">Defines on whether to include algorithm variants.</div></div>
<div class="ttc" id="a00875_html"><div class="ttname"><a href="a00875.html">basic_iterator.h</a></div><div class="ttdoc">Includes the original header files concerned with iterators except for stream iterators....</div></div>
<div class="ttc" id="a00881_html_a77fb93c9cecec331ccee755972695128"><div class="ttname"><a href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a></div><div class="ttdeci">#define _GLIBCXX_CALL(__n)</div><div class="ttdoc">Macro to produce log message when entering a function.</div><div class="ttdef"><b>Definition:</b> <a href="a00881_source.html#l00044">compiletime_settings.h:44</a></div></div>
<div class="ttc" id="a09695_html"><div class="ttname"><a href="a09695.html">__gnu_parallel::balanced_quicksort_tag</a></div><div class="ttdoc">Forces parallel sorting using balanced quicksort at compile time.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00164">tags.h:164</a></div></div>
<div class="ttc" id="a09683_html"><div class="ttname"><a href="a09683.html">__gnu_parallel::multiway_mergesort_exact_tag</a></div><div class="ttdoc">Forces parallel sorting using multiway mergesort with exact splitting at compile time.</div><div class="ttdef"><b>Definition:</b> <a href="a00968_source.html#l00137">tags.h:137</a></div></div>
<div class="ttc" id="a01575_html"><div class="ttname"><a href="a01575.html">__gnu_parallel</a></div><div class="ttdoc">GNU parallel code for public use.</div><div class="ttdef"><b>Definition:</b> <a href="a00872_source.html#l00061">balanced_quicksort.h:61</a></div></div>
<div class="ttc" id="a00920_html"><div class="ttname"><a href="a00920.html">multiway_mergesort.h</a></div><div class="ttdoc">Parallel multiway merge sort. This file is a GNU parallel extension to the Standard C++ Library.</div></div>
<div class="ttc" id="a00878_html"><div class="ttname"><a href="a00878.html">checkers.h</a></div><div class="ttdoc">Routines for checking the correctness of algorithm results. This file is a GNU parallel extension to ...</div></div>
<div class="ttc" id="a00872_html"><div class="ttname"><a href="a00872.html">balanced_quicksort.h</a></div><div class="ttdoc">Implementation of a dynamically load-balanced parallel quicksort.</div></div>
<div class="ttc" id="a01575_html_a76f6cbf29b1b8d57762cce1ed9bd01a8"><div class="ttname"><a href="a01575.html#a76f6cbf29b1b8d57762cce1ed9bd01a8">__gnu_parallel::_Parallelism</a></div><div class="ttdeci">_Parallelism</div><div class="ttdoc">Run-time equivalents for the compile-time tags.</div><div class="ttdef"><b>Definition:</b> <a href="a00971_source.html#l00044">types.h:44</a></div></div>
<div class="ttc" id="a09635_html_abc4965eacae0b49945ebc887cb11adc1"><div class="ttname"><a href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">__gnu_parallel::_Settings::get</a></div><div class="ttdeci">static const _Settings & get()</div><div class="ttdoc">Get the global settings.</div></div>
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