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<a href="a00953.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/random_shuffle.h</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * @brief Parallel implementation of std::random_shuffle().</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_RANDOM_SHUFFLE_H</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#define _GLIBCXX_PARALLEL_RANDOM_SHUFFLE_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="a00095.html">limits</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a00569.html">bits/stl_numeric.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> <span class="preprocessor">#include <<a class="code" href="a00950.html">parallel/random_number.h</a>></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span><a class="code" href="a01575.html">__gnu_parallel</a></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {<span class="comment"></span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> /** @brief Type to hold the index of a bin.</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> *</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * Since many variables of this type are allocated, it should be</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * chosen as small as possible.</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"><a class="line" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584"> 47</a></span>  <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>;</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> /** @brief Data known to every thread participating in</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> __gnu_parallel::__parallel_random_shuffle(). */</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RAIter></div><div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="a09611.html"> 52</a></span>  <span class="keyword">struct </span><a class="code" href="a09611.html">_DRandomShufflingGlobalData</a></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">typedef</span> std::iterator_traits<_RAIter> _TraitsType;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::value_type _ValueType;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::difference_type _DifferenceType;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> /** @brief Begin iterator of the __source. */</span></div><div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="a09611.html#acfd543398248a5b739699df3a525c3c2"> 59</a></span>  _RAIter& <a class="code" href="a09611.html#acfd543398248a5b739699df3a525c3c2">_M_source</a>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> /** @brief Temporary arrays for each thread. */</span></div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="a09611.html#ab4a993d7f3f535fb1e966844a742c346"> 62</a></span>  _ValueType** <a class="code" href="a09611.html#ab4a993d7f3f535fb1e966844a742c346">_M_temporaries</a>;</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"> /** @brief Two-dimensional array to hold the thread-bin distribution.</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> *</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * Dimensions (_M_num_threads + 1) __x (_M_num_bins + 1). */</span></div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e"> 67</a></span>  _DifferenceType** <a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> /** @brief Start indexes of the threads' __chunks. */</span></div><div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="a09611.html#ad6b06c75f81ed22652e7885f5f24b8f8"> 70</a></span>  _DifferenceType* <a class="code" href="a09611.html#ad6b06c75f81ed22652e7885f5f24b8f8">_M_starts</a>;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"></span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> /** @brief Number of the thread that will further process the</span></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> corresponding bin. */</span></div><div class="line"><a name="l00074"></a><span class="lineno"><a class="line" href="a09611.html#ab8ca1d69017a8d989c2a6513f7ee5dff"> 74</a></span>  <a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a>* <a class="code" href="a09611.html#ab8ca1d69017a8d989c2a6513f7ee5dff">_M_bin_proc</a>;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> /** @brief Number of bins to distribute to. */</span></div><div class="line"><a name="l00077"></a><span class="lineno"><a class="line" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090"> 77</a></span>  <span class="keywordtype">int</span> <a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a>;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> /** @brief Number of bits needed to address the bins. */</span></div><div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="a09611.html#aea997549c9b932168aa3604c93d8ffc8"> 80</a></span>  <span class="keywordtype">int</span> <a class="code" href="a09611.html#aea997549c9b932168aa3604c93d8ffc8">_M_num_bits</a>;</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> /** @brief Constructor. */</span></div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="a09611.html#a49c246799f069b451b53333929d4084b"> 83</a></span>  <a class="code" href="a09611.html#a49c246799f069b451b53333929d4084b">_DRandomShufflingGlobalData</a>(_RAIter& __source)</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  : <a class="code" href="a09611.html#acfd543398248a5b739699df3a525c3c2">_M_source</a>(__source) { }</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  };</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"></span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> /** @brief Local data for a thread participating in</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> __gnu_parallel::__parallel_random_shuffle().</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> */</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _RandomNumberGenerator></div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="a09615.html"> 91</a></span>  <span class="keyword">struct </span><a class="code" href="a09615.html">_DRSSorterPU</a></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {<span class="comment"></span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> /** @brief Number of threads participating in total. */</span></div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="a09615.html#a98ee0afe2a8b24ccca4438ac7d9aa05d"> 94</a></span>  <span class="keywordtype">int</span> <a class="code" href="a09615.html#a98ee0afe2a8b24ccca4438ac7d9aa05d">_M_num_threads</a>;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> /** @brief Begin index for bins taken care of by this thread. */</span></div><div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="a09615.html#a4f1586846d7c1364d0bdb4495050be75"> 97</a></span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> <a class="code" href="a09615.html#a4f1586846d7c1364d0bdb4495050be75">_M_bins_begin</a>;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"></span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> /** @brief End index for bins taken care of by this thread. */</span></div><div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="a09615.html#a57cad95133be224e950058f49d8efa88"> 100</a></span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> <a class="code" href="a09615.html#a57cad95133be224e950058f49d8efa88">__bins_end</a>;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"></span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> /** @brief Random _M_seed for this thread. */</span></div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="a09615.html#a81dfd4b63950e76d2b540051a234cd5d"> 103</a></span>  uint32_t <a class="code" href="a09615.html#a81dfd4b63950e76d2b540051a234cd5d">_M_seed</a>;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"></span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> /** @brief Pointer to global data. */</span></div><div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="a09615.html#a8e416537b5c329254dbc66c20416629f"> 106</a></span>  <a class="code" href="a09611.html">_DRandomShufflingGlobalData<_RAIter></a>* <a class="code" href="a09615.html#a8e416537b5c329254dbc66c20416629f">_M_sd</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"> /** @brief Generate a random number in @c [0,2^__logp).</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> * @param __logp Logarithm (basis 2) of the upper range __bound.</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * @param __rng Random number generator to use.</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> */</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RandomNumberGenerator></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">inline</span> <span class="keywordtype">int</span></div><div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="a01575.html#a06421834042f49edbb2abb2dd931315d"> 115</a></span>  <a class="code" href="a01575.html#a06421834042f49edbb2abb2dd931315d">__random_number_pow2</a>(<span class="keywordtype">int</span> __logp, _RandomNumberGenerator& __rng)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  { <span class="keywordflow">return</span> __rng.__genrand_bits(__logp); }</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="comment"> /** @brief Random shuffle code executed by each thread.</span></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> * @param __pus Array of thread-local data records. */</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _RandomNumberGenerator></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordtype">void</span> </div><div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="a01575.html#ab52b56076dd965bea099a7187e621d0b"> 122</a></span>  <a class="code" href="a01575.html#ab52b56076dd965bea099a7187e621d0b">__parallel_random_shuffle_drs_pu</a>(<a class="code" href="a09615.html">_DRSSorterPU</a><_RAIter,</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  _RandomNumberGenerator>* __pus)</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  {</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">typedef</span> std::iterator_traits<_RAIter> _TraitsType;</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::value_type _ValueType;</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::difference_type _DifferenceType;</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>  <a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a> __iam = omp_get_thread_num();</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <a class="code" href="a09615.html">_DRSSorterPU<_RAIter, _RandomNumberGenerator></a>* __d = &__pus[__iam];</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="a09611.html">_DRandomShufflingGlobalData<_RAIter></a>* __sd = __d-><a class="code" href="a09615.html#a8e416537b5c329254dbc66c20416629f">_M_sd</a>;</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="comment">// Indexing: _M_dist[bin][processor]</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  _DifferenceType __length = (__sd-><a class="code" href="a09611.html#ad6b06c75f81ed22652e7885f5f24b8f8">_M_starts</a>[__iam + 1]</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  - __sd-><a class="code" href="a09611.html#ad6b06c75f81ed22652e7885f5f24b8f8">_M_starts</a>[__iam]);</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>* __oracles = <span class="keyword">new</span> <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>[__length];</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  _DifferenceType* __dist = <span class="keyword">new</span> _DifferenceType[__sd-><a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a> + 1];</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>* __bin_proc = <span class="keyword">new</span> <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>[__sd-><a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a>];</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  _ValueType** __temporaries = <span class="keyword">new</span> _ValueType*[__d-><a class="code" href="a09615.html#a98ee0afe2a8b24ccca4438ac7d9aa05d">_M_num_threads</a>];</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// Compute oracles and count appearances.</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = 0; __b < __sd-><a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a> + 1; ++__b)</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  __dist[__b] = 0;</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordtype">int</span> __num_bits = __sd-><a class="code" href="a09611.html#aea997549c9b932168aa3604c93d8ffc8">_M_num_bits</a>;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="a09607.html">_RandomNumber</a> __rng(__d-><a class="code" href="a09615.html#a81dfd4b63950e76d2b540051a234cd5d">_M_seed</a>);</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// First main loop.</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">for</span> (_DifferenceType __i = 0; __i < __length; ++__i)</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __oracle = <a class="code" href="a01575.html#a06421834042f49edbb2abb2dd931315d">__random_number_pow2</a>(__num_bits, __rng);</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  __oracles[__i] = __oracle;</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">// To allow prefix (partial) sum.</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  ++(__dist[__oracle + 1]);</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  }</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = 0; __b < __sd-><a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a> + 1; ++__b)</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  __sd-><a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__b][__iam + 1] = __dist[__b];</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> # pragma omp barrier</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> # pragma omp single</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  {</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="comment">// Sum up bins, __sd->_M_dist[__s + 1][__d->_M_num_threads] now</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// contains the total number of items in bin __s</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  for (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __s = 0; __s < __sd-><a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a>; ++__s)</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="a01541.html#a9151a0519f8c180edbef22197f39dd5e">__gnu_sequential::partial_sum</a>(__sd-><a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__s + 1],</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  __sd-><a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__s + 1]</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  + __d-><a class="code" href="a09615.html#a98ee0afe2a8b24ccca4438ac7d9aa05d">_M_num_threads</a> + 1,</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  __sd-><a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__s + 1]);</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor"># pragma omp barrier</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="code" href="a01575.html#a1cbb61a4863a306daa23823d89f9bef1">_SequenceIndex</a> __offset = 0, __global_offset = 0;</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __s = 0; __s < __d->_M_bins_begin; ++__s)</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  __global_offset += __sd->_M_dist[__s + 1][__d->_M_num_threads];</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> # pragma omp barrier</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  for (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __s = __d->_M_bins_begin; __s < __d->__bins_end; ++__s)</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  {</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> __t = 0; __t < __d->_M_num_threads + 1; ++__t)</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  __sd->_M_dist[__s + 1][__t] += __offset;</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  __offset = __sd->_M_dist[__s + 1][__d->_M_num_threads];</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> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  __sd->_M_temporaries[__iam] = static_cast<_ValueType*></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  (::<span class="keyword">operator</span> <span class="keyword">new</span>(<span class="keyword">sizeof</span>(_ValueType) * __offset));</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="preprocessor"># pragma omp barrier</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// Draw local copies to avoid false sharing.</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = 0; __b < __sd->_M_num_bins + 1; ++__b)</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  __dist[__b] = __sd->_M_dist[__b][__iam];</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  for (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = 0; __b < __sd->_M_num_bins; ++__b)</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  __bin_proc[__b] = __sd->_M_bin_proc[__b];</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  for (<a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a> __t = 0; __t < __d->_M_num_threads; ++__t)</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  __temporaries[__t] = __sd->_M_temporaries[__t];</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  _RAIter __source = __sd->_M_source;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  _DifferenceType __start = __sd->_M_starts[__iam];</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// Distribute according to oracles, second main loop.</span></div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  for (_DifferenceType __i = 0; __i < __length; ++__i)</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  {</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __target_bin = __oracles[__i];</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a> __target_p = __bin_proc[__target_bin];</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="comment">// Last column [__d->_M_num_threads] stays unchanged.</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  ::new(&(__temporaries[__target_p][__dist[__target_bin + 1]++]))</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  _ValueType(*(__source + __i + __start));</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> </div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  delete[] __oracles;</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  delete[] __dist;</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  delete[] __bin_proc;</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  delete[] __temporaries;</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="preprocessor"># pragma omp barrier</span></div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="comment">// Shuffle bins internally.</span></div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = __d->_M_bins_begin; __b < __d->__bins_end; ++__b)</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  {</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  _ValueType* __begin =</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  (__sd->_M_temporaries[__iam]</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  + (__b == __d->_M_bins_begin</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  ? 0 : __sd->_M_dist[__b][__d->_M_num_threads])),</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  *__end = (__sd->_M_temporaries[__iam]</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  + __sd->_M_dist[__b + 1][__d->_M_num_threads]);</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <a class="code" href="a01575.html#aa9ee237cbbdd03ed217714a05e5a8868">__sequential_random_shuffle</a>(__begin, __end, __rng);</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  std::copy(__begin, __end, __sd->_M_source + __global_offset</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  + (__b == __d->_M_bins_begin</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  ? 0 : __sd->_M_dist[__b][__d->_M_num_threads]));</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> </div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#a1cbb61a4863a306daa23823d89f9bef1">_SequenceIndex</a> __i = 0; __i < __offset; ++__i)</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  __sd->_M_temporaries[__iam][__i].~_ValueType();</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  ::operator <span class="keyword">delete</span>(__sd->_M_temporaries[__iam]);</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="comment"></span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment"> /** @brief Round up to the next greater power of 2.</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment"> * @param __x _Integer to round up */</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  _Tp </div><div class="line"><a name="l00248"></a><span class="lineno"><a class="line" href="a01575.html#a9105a85041ac81dba62d60dc669ec169"> 248</a></span>  <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(_Tp __x)</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  {</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">if</span> (__x <= 1)</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">return</span> 1;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span> (_Tp)1 << (<a class="code" href="a01575.html#ae8e1f6dc07de01f28bf591339cf8aa9c">__rd_log2</a>(__x - 1) + 1);</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  }</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment"></span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="comment"> /** @brief Main parallel random shuffle step.</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment"> * @param __begin Begin iterator of sequence.</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment"> * @param __end End iterator of sequence.</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"> * @param __n Length of sequence.</span></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment"> * @param __num_threads Number of threads to use.</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * @param __rng Random number generator to use.</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> */</span></div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _RandomNumberGenerator></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00265"></a><span class="lineno"><a class="line" href="a01575.html#a9152bade9629217427f065780bc3f4c2"> 265</a></span>  <a class="code" href="a01575.html#a9152bade9629217427f065780bc3f4c2">__parallel_random_shuffle_drs</a>(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keyword">typename</span> std::iterator_traits</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <_RAIter>::difference_type __n,</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a> __num_threads,</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  _RandomNumberGenerator& __rng)</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  {</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keyword">typedef</span> std::iterator_traits<_RAIter> _TraitsType;</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::value_type _ValueType;</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::difference_type _DifferenceType;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <a class="code" href="a00881.html#a77fb93c9cecec331ccee755972695128">_GLIBCXX_CALL</a>(__n)</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> </div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keyword">const</span> <a class="code" href="a09635.html">_Settings</a>& __s = <a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>();</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">if</span> (__num_threads > __n)</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  __num_threads = static_cast<_ThreadIndex>(__n);</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __num_bins, __num_bins_cache;</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> </div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">// Try the L1 cache first.</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="comment">// Must fit into L1.</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  __num_bins_cache =</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  std::max<_DifferenceType>(1, __n / (__s.L1_cache_size_lb</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  / <span class="keyword">sizeof</span>(_ValueType)));</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  __num_bins_cache = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins_cache);</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span> </div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="comment">// No more buckets than TLB entries, power of 2</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="comment">// Power of 2 and at least one element per bin, at most the TLB size.</span></div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  __num_bins = std::min<_DifferenceType>(__n, __num_bins_cache);</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="comment">// 2 TLB entries needed per bin.</span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  __num_bins = std::min<_DifferenceType>(__s.<a class="code" href="a09635.html#a5685189f3c14bde3fc8857e5217a359d">TLB_size</a> / 2, __num_bins);</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  __num_bins = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins);</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">if</span> (__num_bins < __num_bins_cache)</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  {</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="comment">// Now try the L2 cache</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="comment">// Must fit into L2</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  __num_bins_cache = static_cast<_BinIndex></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  (std::max<_DifferenceType>(1, __n / (__s.<a class="code" href="a09635.html#a5a8b6a19fe32819d625800fdcdb97c25">L2_cache_size</a></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  / <span class="keyword">sizeof</span>(_ValueType))));</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  __num_bins_cache = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins_cache);</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="comment">// No more buckets than TLB entries, power of 2.</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  __num_bins = static_cast<_BinIndex></div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  (<a class="code" href="a01485.html#gad48656de2f272a953455e1fff2532125">std::min</a>(__n, static_cast<_DifferenceType>(__num_bins_cache)));</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">// Power of 2 and at least one element per bin, at most the TLB size.</span></div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB</span></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="comment">// 2 TLB entries needed per bin.</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  __num_bins = <a class="code" href="a01485.html#gad48656de2f272a953455e1fff2532125">std::min</a>(static_cast<_DifferenceType>(__s.<a class="code" href="a09635.html#a5685189f3c14bde3fc8857e5217a359d">TLB_size</a> / 2),</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  __num_bins);</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  __num_bins = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins);</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1</span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  }</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span> </div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  __num_bins = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  std::max<_BinIndex>(__num_threads, __num_bins));</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> </div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span> (__num_threads <= 1)</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  {</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <a class="code" href="a09607.html">_RandomNumber</a> __derived_rng(</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  __rng(<a class="code" href="a02523.html">std::numeric_limits<uint32_t>::max</a>()));</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <a class="code" href="a01575.html#aa9ee237cbbdd03ed217714a05e5a8868">__sequential_random_shuffle</a>(__begin, __end, __derived_rng);</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  }</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="a09611.html">_DRandomShufflingGlobalData<_RAIter></a> __sd(__begin);</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <a class="code" href="a09615.html">_DRSSorterPU<_RAIter, _RandomNumber ></a>* __pus;</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  _DifferenceType* __starts;</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> </div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="preprocessor"># pragma omp parallel num_threads(__num_threads)</span></div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  {</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a> __num_threads = omp_get_num_threads();</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="preprocessor"># pragma omp single</span></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  {</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  __pus = <span class="keyword">new</span> <a class="code" href="a09615.html">_DRSSorterPU<_RAIter, _RandomNumber></a>[__num_threads];</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  </div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  __sd.<a class="code" href="a09611.html#ab4a993d7f3f535fb1e966844a742c346">_M_temporaries</a> = <span class="keyword">new</span> _ValueType*[__num_threads];</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  __sd.<a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a> = <span class="keyword">new</span> _DifferenceType*[__num_bins + 1];</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  __sd.<a class="code" href="a09611.html#ab8ca1d69017a8d989c2a6513f7ee5dff">_M_bin_proc</a> = <span class="keyword">new</span> <a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a>[__num_bins];</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = 0; __b < __num_bins + 1; ++__b)</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  __sd.<a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__b] = <span class="keyword">new</span> _DifferenceType[__num_threads + 1];</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  for (<a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __b = 0; __b < (__num_bins + 1); ++__b)</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  {</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  __sd.<a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[0][0] = 0;</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  __sd.<a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__b][0] = 0;</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  }</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  __starts = __sd.<a class="code" href="a09611.html#ad6b06c75f81ed22652e7885f5f24b8f8">_M_starts</a> = <span class="keyword">new</span> _DifferenceType[__num_threads + 1];</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordtype">int</span> __bin_cursor = 0;</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  __sd.<a class="code" href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">_M_num_bins</a> = __num_bins;</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  __sd.<a class="code" href="a09611.html#aea997549c9b932168aa3604c93d8ffc8">_M_num_bits</a> = <a class="code" href="a01575.html#ae8e1f6dc07de01f28bf591339cf8aa9c">__rd_log2</a>(__num_bins);</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  _DifferenceType __chunk_length = __n / __num_threads,</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  __split = __n % __num_threads,</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  __start = 0;</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  _DifferenceType __bin_chunk_length = __num_bins / __num_threads,</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  __bin_split = __num_bins % __num_threads;</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">for</span> (<a class="code" href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">_ThreadIndex</a> __i = 0; __i < __num_threads; ++__i)</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  {</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  __starts[__i] = __start;</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  __start += (__i < __split</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  ? (__chunk_length + 1) : __chunk_length);</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordtype">int</span> __j = __pus[__i].<a class="code" href="a09615.html#a4f1586846d7c1364d0bdb4495050be75">_M_bins_begin</a> = __bin_cursor;</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// Range of bins for this processor.</span></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  __bin_cursor += (__i < __bin_split</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  ? (__bin_chunk_length + 1)</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  : __bin_chunk_length);</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  __pus[__i].<a class="code" href="a09615.html#a57cad95133be224e950058f49d8efa88">__bins_end</a> = __bin_cursor;</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">for</span> (; __j < __bin_cursor; ++__j)</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  __sd.<a class="code" href="a09611.html#ab8ca1d69017a8d989c2a6513f7ee5dff">_M_bin_proc</a>[__j] = __i;</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  __pus[__i].<a class="code" href="a09615.html#a98ee0afe2a8b24ccca4438ac7d9aa05d">_M_num_threads</a> = __num_threads;</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  __pus[__i].<a class="code" href="a09615.html#a81dfd4b63950e76d2b540051a234cd5d">_M_seed</a> = __rng(<a class="code" href="a02523.html">std::numeric_limits<uint32_t>::max</a>());</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  __pus[__i].<a class="code" href="a09615.html#a8e416537b5c329254dbc66c20416629f">_M_sd</a> = &__sd;</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  }</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  __starts[__num_threads] = __start;</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  } <span class="comment">//single</span></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// Now shuffle in parallel.</span></div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <a class="code" href="a01575.html#ab52b56076dd965bea099a7187e621d0b">__parallel_random_shuffle_drs_pu</a>(__pus);</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  } <span class="comment">// parallel</span></div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keyword">delete</span>[] __starts;</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keyword">delete</span>[] __sd.<a class="code" href="a09611.html#ab8ca1d69017a8d989c2a6513f7ee5dff">_M_bin_proc</a>;</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> __s = 0; __s < (__num_bins + 1); ++__s)</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keyword">delete</span>[] __sd.<a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>[__s];</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keyword">delete</span>[] __sd.<a class="code" href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">_M_dist</a>;</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keyword">delete</span>[] __sd.<a class="code" href="a09611.html#ab4a993d7f3f535fb1e966844a742c346">_M_temporaries</a>;</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span> </div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keyword">delete</span>[] __pus;</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  }</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="comment"></span></div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="comment"> /** @brief Sequential cache-efficient random shuffle.</span></div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="comment"> * @param __begin Begin iterator of sequence.</span></div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="comment"> * @param __end End iterator of sequence.</span></div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="comment"> * @param __rng Random number generator to use.</span></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="comment"> */</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _RandomNumberGenerator></div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00410"></a><span class="lineno"><a class="line" href="a01575.html#aa9ee237cbbdd03ed217714a05e5a8868"> 410</a></span>  <a class="code" href="a01575.html#aa9ee237cbbdd03ed217714a05e5a8868">__sequential_random_shuffle</a>(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  _RandomNumberGenerator& __rng)</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  {</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keyword">typedef</span> std::iterator_traits<_RAIter> _TraitsType;</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::value_type _ValueType;</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::difference_type _DifferenceType;</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span> </div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  _DifferenceType __n = __end - __begin;</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keyword">const</span> <a class="code" href="a09635.html">_Settings</a>& __s = <a class="code" href="a09635.html#abc4965eacae0b49945ebc887cb11adc1">_Settings::get</a>();</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __num_bins, __num_bins_cache;</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span> </div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1</span></div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="comment">// Try the L1 cache first, must fit into L1.</span></div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  __num_bins_cache = std::max<_DifferenceType></div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  (1, __n / (__s.L1_cache_size_lb / <span class="keyword">sizeof</span>(_ValueType)));</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  __num_bins_cache = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins_cache);</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span> </div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="comment">// No more buckets than TLB entries, power of 2</span></div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="comment">// Power of 2 and at least one element per bin, at most the TLB size</span></div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  __num_bins = <a class="code" href="a01485.html#gad48656de2f272a953455e1fff2532125">std::min</a>(__n, (_DifferenceType)__num_bins_cache);</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">// 2 TLB entries needed per bin</span></div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  __num_bins = <a class="code" href="a01485.html#gad48656de2f272a953455e1fff2532125">std::min</a>((_DifferenceType)__s.<a class="code" href="a09635.html#a5685189f3c14bde3fc8857e5217a359d">TLB_size</a> / 2, __num_bins);</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  __num_bins = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins);</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span> </div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">if</span> (__num_bins < __num_bins_cache)</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  {</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="comment">// Now try the L2 cache, must fit into L2.</span></div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  __num_bins_cache = static_cast<_BinIndex></div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  (std::max<_DifferenceType>(1, __n / (__s.<a class="code" href="a09635.html#a5a8b6a19fe32819d625800fdcdb97c25">L2_cache_size</a></div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  / <span class="keyword">sizeof</span>(_ValueType))));</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  __num_bins_cache = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins_cache);</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span> </div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="comment">// No more buckets than TLB entries, power of 2</span></div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="comment">// Power of 2 and at least one element per bin, at most the TLB size.</span></div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  __num_bins = static_cast<_BinIndex></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  (<a class="code" href="a01485.html#gad48656de2f272a953455e1fff2532125">std::min</a>(__n, static_cast<_DifferenceType>(__num_bins_cache)));</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_TLB</span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="comment">// 2 TLB entries needed per bin</span></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  __num_bins = std::min<_DifferenceType>(__s.<a class="code" href="a09635.html#a5685189f3c14bde3fc8857e5217a359d">TLB_size</a> / 2, __num_bins);</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  __num_bins = <a class="code" href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__round_up_to_pow2</a>(__num_bins);</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="preprocessor">#if _GLIBCXX_RANDOM_SHUFFLE_CONSIDER_L1</span></div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  }</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span> </div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordtype">int</span> __num_bits = <a class="code" href="a01575.html#ae8e1f6dc07de01f28bf591339cf8aa9c">__rd_log2</a>(__num_bins);</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span> </div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordflow">if</span> (__num_bins > 1)</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  {</div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  _ValueType* __target =</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  static_cast<_ValueType*>(::<span class="keyword">operator</span> <span class="keyword">new</span>(<span class="keyword">sizeof</span>(_ValueType) * __n));</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>* __oracles = <span class="keyword">new</span> <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a>[__n];</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  _DifferenceType* __dist0 = <span class="keyword">new</span> _DifferenceType[__num_bins + 1],</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  * __dist1 = <span class="keyword">new</span> _DifferenceType[__num_bins + 1];</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span> </div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> __b = 0; __b < __num_bins + 1; ++__b)</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  __dist0[__b] = 0;</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span> </div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <a class="code" href="a09607.html">_RandomNumber</a> __bitrng(__rng(0xFFFFFFFF));</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span> </div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keywordflow">for</span> (_DifferenceType __i = 0; __i < __n; ++__i)</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  {</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <a class="code" href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">_BinIndex</a> __oracle = <a class="code" href="a01575.html#a06421834042f49edbb2abb2dd931315d">__random_number_pow2</a>(__num_bits, __bitrng);</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  __oracles[__i] = __oracle;</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span> </div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="comment">// To allow prefix (partial) sum.</span></div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  ++(__dist0[__oracle + 1]);</div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  }</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span> </div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="comment">// Sum up bins.</span></div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <a class="code" href="a01541.html#a9151a0519f8c180edbef22197f39dd5e">__gnu_sequential::partial_sum</a>(__dist0, __dist0 + __num_bins + 1,</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  __dist0);</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span> </div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> __b = 0; __b < __num_bins + 1; ++__b)</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  __dist1[__b] = __dist0[__b];</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span> </div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="comment">// Distribute according to oracles.</span></div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">for</span> (_DifferenceType __i = 0; __i < __n; ++__i)</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  ::<span class="keyword">new</span>(&(__target[(__dist0[__oracles[__i]])++])) </div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  _ValueType(*(__begin + __i));</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span> </div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> __b = 0; __b < __num_bins; ++__b)</div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  <a class="code" href="a01575.html#aa9ee237cbbdd03ed217714a05e5a8868">__sequential_random_shuffle</a>(__target + __dist1[__b],</div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  __target + __dist1[__b + 1], __rng);</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span> </div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="comment">// Copy elements back.</span></div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  std::copy(__target, __target + __n, __begin);</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span> </div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keyword">delete</span>[] __dist0;</div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keyword">delete</span>[] __dist1;</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keyword">delete</span>[] __oracles;</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  </div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">for</span> (_DifferenceType __i = 0; __i < __n; ++__i)</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  __target[__i].~_ValueType();</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  ::operator <span class="keyword">delete</span>(__target);</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  }</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  __gnu_sequential::random_shuffle(__begin, __end, __rng);</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  }</div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span> <span class="comment"></span></div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span> <span class="comment"> /** @brief Parallel random public call.</span></div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span> <span class="comment"> * @param __begin Begin iterator of sequence.</span></div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="comment"> * @param __end End iterator of sequence.</span></div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span> <span class="comment"> * @param __rng Random number generator to use.</span></div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="comment"> */</span></div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _RAIter, <span class="keyword">typename</span> _RandomNumberGenerator></div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00522"></a><span class="lineno"><a class="line" href="a01575.html#a6e78b59cb50c8e14ebf6990016af7342"> 522</a></span>  <a class="code" href="a01575.html#a6e78b59cb50c8e14ebf6990016af7342">__parallel_random_shuffle</a>(_RAIter __begin, _RAIter __end,</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  _RandomNumberGenerator __rng = <a class="code" href="a09607.html">_RandomNumber</a>())</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  {</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keyword">typedef</span> std::iterator_traits<_RAIter> _TraitsType;</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _TraitsType::difference_type _DifferenceType;</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  _DifferenceType __n = __end - __begin;</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <a class="code" href="a01575.html#a9152bade9629217427f065780bc3f4c2">__parallel_random_shuffle_drs</a>(__begin, __end, __n,</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  __get_max_threads(), __rng);</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  }</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span> }</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span> </div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="preprocessor">#endif </span><span class="comment">/* _GLIBCXX_PARALLEL_RANDOM_SHUFFLE_H */</span><span class="preprocessor"></span></div><div class="ttc" id="a09615_html"><div class="ttname"><a href="a09615.html">__gnu_parallel::_DRSSorterPU</a></div><div class="ttdoc">Local data for a thread participating in __gnu_parallel::__parallel_random_shuffle().</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00091">random_shuffle.h:91</a></div></div>
<div class="ttc" id="a09611_html_acfd543398248a5b739699df3a525c3c2"><div class="ttname"><a href="a09611.html#acfd543398248a5b739699df3a525c3c2">__gnu_parallel::_DRandomShufflingGlobalData::_M_source</a></div><div class="ttdeci">_RAIter & _M_source</div><div class="ttdoc">Begin iterator of the __source.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00059">random_shuffle.h:59</a></div></div>
<div class="ttc" id="a09615_html_a98ee0afe2a8b24ccca4438ac7d9aa05d"><div class="ttname"><a href="a09615.html#a98ee0afe2a8b24ccca4438ac7d9aa05d">__gnu_parallel::_DRSSorterPU::_M_num_threads</a></div><div class="ttdeci">int _M_num_threads</div><div class="ttdoc">Number of threads participating in total.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00094">random_shuffle.h:94</a></div></div>
<div class="ttc" id="a09615_html_a8e416537b5c329254dbc66c20416629f"><div class="ttname"><a href="a09615.html#a8e416537b5c329254dbc66c20416629f">__gnu_parallel::_DRSSorterPU::_M_sd</a></div><div class="ttdeci">_DRandomShufflingGlobalData< _RAIter > * _M_sd</div><div class="ttdoc">Pointer to global data.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00106">random_shuffle.h:106</a></div></div>
<div class="ttc" id="a09611_html_aea997549c9b932168aa3604c93d8ffc8"><div class="ttname"><a href="a09611.html#aea997549c9b932168aa3604c93d8ffc8">__gnu_parallel::_DRandomShufflingGlobalData::_M_num_bits</a></div><div class="ttdeci">int _M_num_bits</div><div class="ttdoc">Number of bits needed to address the bins.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00080">random_shuffle.h:80</a></div></div>
<div class="ttc" id="a01575_html_aa9ee237cbbdd03ed217714a05e5a8868"><div class="ttname"><a href="a01575.html#aa9ee237cbbdd03ed217714a05e5a8868">__gnu_parallel::__sequential_random_shuffle</a></div><div class="ttdeci">void __sequential_random_shuffle(_RAIter __begin, _RAIter __end, _RandomNumberGenerator &__rng)</div><div class="ttdoc">Sequential cache-efficient random shuffle.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00410">random_shuffle.h:410</a></div></div>
<div class="ttc" id="a01575_html_a9152bade9629217427f065780bc3f4c2"><div class="ttname"><a href="a01575.html#a9152bade9629217427f065780bc3f4c2">__gnu_parallel::__parallel_random_shuffle_drs</a></div><div class="ttdeci">void __parallel_random_shuffle_drs(_RAIter __begin, _RAIter __end, typename std::iterator_traits< _RAIter >::difference_type __n, _ThreadIndex __num_threads, _RandomNumberGenerator &__rng)</div><div class="ttdoc">Main parallel random shuffle step.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00265">random_shuffle.h:265</a></div></div>
<div class="ttc" id="a09635_html"><div class="ttname"><a href="a09635.html">__gnu_parallel::_Settings</a></div><div class="ttdoc">class _Settings Run-time settings for the parallel mode including all tunable parameters.</div><div class="ttdef"><b>Definition:</b> <a href="a00962_source.html#l00123">settings.h:123</a></div></div>
<div class="ttc" id="a09611_html_a49c246799f069b451b53333929d4084b"><div class="ttname"><a href="a09611.html#a49c246799f069b451b53333929d4084b">__gnu_parallel::_DRandomShufflingGlobalData::_DRandomShufflingGlobalData</a></div><div class="ttdeci">_DRandomShufflingGlobalData(_RAIter &__source)</div><div class="ttdoc">Constructor.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00083">random_shuffle.h:83</a></div></div>
<div class="ttc" id="a09611_html_ab4a993d7f3f535fb1e966844a742c346"><div class="ttname"><a href="a09611.html#ab4a993d7f3f535fb1e966844a742c346">__gnu_parallel::_DRandomShufflingGlobalData::_M_temporaries</a></div><div class="ttdeci">_ValueType ** _M_temporaries</div><div class="ttdoc">Temporary arrays for each thread.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00062">random_shuffle.h:62</a></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="a09615_html_a57cad95133be224e950058f49d8efa88"><div class="ttname"><a href="a09615.html#a57cad95133be224e950058f49d8efa88">__gnu_parallel::_DRSSorterPU::__bins_end</a></div><div class="ttdeci">_BinIndex __bins_end</div><div class="ttdoc">End index for bins taken care of by this thread.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00100">random_shuffle.h:100</a></div></div>
<div class="ttc" id="a00950_html"><div class="ttname"><a href="a00950.html">random_number.h</a></div><div class="ttdoc">Random number generator based on the Mersenne twister. This file is a GNU parallel extension to the S...</div></div>
<div class="ttc" id="a02523_html"><div class="ttname"><a href="a02523.html">std::numeric_limits</a></div><div class="ttdoc">Properties of fundamental types.</div><div class="ttdef"><b>Definition:</b> <a href="a00095_source.html#l00312">limits:312</a></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="a00095_html"><div class="ttname"><a href="a00095.html">limits</a></div></div>
<div class="ttc" id="a01485_html_gad48656de2f272a953455e1fff2532125"><div class="ttname"><a href="a01485.html#gad48656de2f272a953455e1fff2532125">std::min</a></div><div class="ttdeci">_GLIBCXX14_CONSTEXPR const _Tp & min(const _Tp &, const _Tp &)</div><div class="ttdoc">This does what you think it does.</div><div class="ttdef"><b>Definition:</b> <a href="a00530_source.html#l00195">stl_algobase.h:195</a></div></div>
<div class="ttc" id="a09611_html_a97f25c495ee3f15f536662ab66ed3090"><div class="ttname"><a href="a09611.html#a97f25c495ee3f15f536662ab66ed3090">__gnu_parallel::_DRandomShufflingGlobalData::_M_num_bins</a></div><div class="ttdeci">int _M_num_bins</div><div class="ttdoc">Number of bins to distribute to.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00077">random_shuffle.h:77</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="a09615_html_a4f1586846d7c1364d0bdb4495050be75"><div class="ttname"><a href="a09615.html#a4f1586846d7c1364d0bdb4495050be75">__gnu_parallel::_DRSSorterPU::_M_bins_begin</a></div><div class="ttdeci">_BinIndex _M_bins_begin</div><div class="ttdoc">Begin index for bins taken care of by this thread.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00097">random_shuffle.h:97</a></div></div>
<div class="ttc" id="a09611_html_a3daea3a567c0812cbd6f952f09cf749e"><div class="ttname"><a href="a09611.html#a3daea3a567c0812cbd6f952f09cf749e">__gnu_parallel::_DRandomShufflingGlobalData::_M_dist</a></div><div class="ttdeci">_DifferenceType ** _M_dist</div><div class="ttdoc">Two-dimensional array to hold the thread-bin distribution.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00067">random_shuffle.h:67</a></div></div>
<div class="ttc" id="a09611_html"><div class="ttname"><a href="a09611.html">__gnu_parallel::_DRandomShufflingGlobalData</a></div><div class="ttdoc">Data known to every thread participating in __gnu_parallel::__parallel_random_shuffle().</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00052">random_shuffle.h:52</a></div></div>
<div class="ttc" id="a01575_html_a6e78b59cb50c8e14ebf6990016af7342"><div class="ttname"><a href="a01575.html#a6e78b59cb50c8e14ebf6990016af7342">__gnu_parallel::__parallel_random_shuffle</a></div><div class="ttdeci">void __parallel_random_shuffle(_RAIter __begin, _RAIter __end, _RandomNumberGenerator __rng=_RandomNumber())</div><div class="ttdoc">Parallel random public call.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00522">random_shuffle.h:522</a></div></div>
<div class="ttc" id="a09611_html_ab8ca1d69017a8d989c2a6513f7ee5dff"><div class="ttname"><a href="a09611.html#ab8ca1d69017a8d989c2a6513f7ee5dff">__gnu_parallel::_DRandomShufflingGlobalData::_M_bin_proc</a></div><div class="ttdeci">_ThreadIndex * _M_bin_proc</div><div class="ttdoc">Number of the thread that will further process the corresponding bin.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00074">random_shuffle.h:74</a></div></div>
<div class="ttc" id="a01575_html_ad8a0790a8380d657d3e238ec3f26d584"><div class="ttname"><a href="a01575.html#ad8a0790a8380d657d3e238ec3f26d584">__gnu_parallel::_BinIndex</a></div><div class="ttdeci">unsigned short _BinIndex</div><div class="ttdoc">Type to hold the index of a bin.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00047">random_shuffle.h:47</a></div></div>
<div class="ttc" id="a09635_html_a5685189f3c14bde3fc8857e5217a359d"><div class="ttname"><a href="a09635.html#a5685189f3c14bde3fc8857e5217a359d">__gnu_parallel::_Settings::TLB_size</a></div><div class="ttdeci">unsigned int TLB_size</div><div class="ttdoc">size of the Translation Lookaside Buffer (underestimation).</div><div class="ttdef"><b>Definition:</b> <a href="a00962_source.html#l00260">settings.h:260</a></div></div>
<div class="ttc" id="a00569_html"><div class="ttname"><a href="a00569.html">stl_numeric.h</a></div></div>
<div class="ttc" id="a01541_html_a9151a0519f8c180edbef22197f39dd5e"><div class="ttname"><a href="a01541.html#a9151a0519f8c180edbef22197f39dd5e">std::partial_sum</a></div><div class="ttdeci">_OutputIterator partial_sum(_InputIterator __first, _InputIterator __last, _OutputIterator __result)</div><div class="ttdoc">Return list of partial sums.</div><div class="ttdef"><b>Definition:</b> <a href="a00569_source.html#l00237">stl_numeric.h:237</a></div></div>
<div class="ttc" id="a01575_html_a9105a85041ac81dba62d60dc669ec169"><div class="ttname"><a href="a01575.html#a9105a85041ac81dba62d60dc669ec169">__gnu_parallel::__round_up_to_pow2</a></div><div class="ttdeci">_Tp __round_up_to_pow2(_Tp __x)</div><div class="ttdoc">Round up to the next greater power of 2.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00248">random_shuffle.h:248</a></div></div>
<div class="ttc" id="a09635_html_a5a8b6a19fe32819d625800fdcdb97c25"><div class="ttname"><a href="a09635.html#a5a8b6a19fe32819d625800fdcdb97c25">__gnu_parallel::_Settings::L2_cache_size</a></div><div class="ttdeci">unsigned long long L2_cache_size</div><div class="ttdoc">size of the L2 cache in bytes (underestimation).</div><div class="ttdef"><b>Definition:</b> <a href="a00962_source.html#l00257">settings.h:257</a></div></div>
<div class="ttc" id="a09611_html_ad6b06c75f81ed22652e7885f5f24b8f8"><div class="ttname"><a href="a09611.html#ad6b06c75f81ed22652e7885f5f24b8f8">__gnu_parallel::_DRandomShufflingGlobalData::_M_starts</a></div><div class="ttdeci">_DifferenceType * _M_starts</div><div class="ttdoc">Start indexes of the threads' __chunks.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00070">random_shuffle.h:70</a></div></div>
<div class="ttc" id="a01575_html_a06421834042f49edbb2abb2dd931315d"><div class="ttname"><a href="a01575.html#a06421834042f49edbb2abb2dd931315d">__gnu_parallel::__random_number_pow2</a></div><div class="ttdeci">int __random_number_pow2(int __logp, _RandomNumberGenerator &__rng)</div><div class="ttdoc">Generate a random number in [0,2^__logp).</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00115">random_shuffle.h:115</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>
<div class="ttc" id="a01575_html_ab52b56076dd965bea099a7187e621d0b"><div class="ttname"><a href="a01575.html#ab52b56076dd965bea099a7187e621d0b">__gnu_parallel::__parallel_random_shuffle_drs_pu</a></div><div class="ttdeci">void __parallel_random_shuffle_drs_pu(_DRSSorterPU< _RAIter, _RandomNumberGenerator > *__pus)</div><div class="ttdoc">Random shuffle code executed by each thread.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00122">random_shuffle.h:122</a></div></div>
<div class="ttc" id="a01575_html_a1cbb61a4863a306daa23823d89f9bef1"><div class="ttname"><a href="a01575.html#a1cbb61a4863a306daa23823d89f9bef1">__gnu_parallel::_SequenceIndex</a></div><div class="ttdeci">uint64_t _SequenceIndex</div><div class="ttdoc">Unsigned integer to index __elements. The total number of elements for each algorithm must fit into t...</div><div class="ttdef"><b>Definition:</b> <a href="a00971_source.html#l00117">types.h:117</a></div></div>
<div class="ttc" id="a01575_html_a05e502e51bfc3233671730f74a44dc6a"><div class="ttname"><a href="a01575.html#a05e502e51bfc3233671730f74a44dc6a">__gnu_parallel::_ThreadIndex</a></div><div class="ttdeci">uint16_t _ThreadIndex</div><div class="ttdoc">Unsigned integer to index a thread number. The maximum thread number (for each processor) must fit in...</div><div class="ttdef"><b>Definition:</b> <a href="a00971_source.html#l00123">types.h:123</a></div></div>
<div class="ttc" id="a09607_html"><div class="ttname"><a href="a09607.html">__gnu_parallel::_RandomNumber</a></div><div class="ttdoc">Random number generator, based on the Mersenne twister.</div><div class="ttdef"><b>Definition:</b> <a href="a00950_source.html#l00042">random_number.h:42</a></div></div>
<div class="ttc" id="a01575_html_ae8e1f6dc07de01f28bf591339cf8aa9c"><div class="ttname"><a href="a01575.html#ae8e1f6dc07de01f28bf591339cf8aa9c">__gnu_parallel::__rd_log2</a></div><div class="ttdeci">_Size __rd_log2(_Size __n)</div><div class="ttdoc">Calculates the rounded-down logarithm of __n for base 2.</div><div class="ttdef"><b>Definition:</b> <a href="a16491_source.html#l00102">parallel/base.h:102</a></div></div>
<div class="ttc" id="a09615_html_a81dfd4b63950e76d2b540051a234cd5d"><div class="ttname"><a href="a09615.html#a81dfd4b63950e76d2b540051a234cd5d">__gnu_parallel::_DRSSorterPU::_M_seed</a></div><div class="ttdeci">uint32_t _M_seed</div><div class="ttdoc">Random _M_seed for this thread.</div><div class="ttdef"><b>Definition:</b> <a href="a00953_source.html#l00103">random_shuffle.h:103</a></div></div>
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