111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// -*- C++ -*- 211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// Copyright (C) 2007-2014 Free Software Foundation, Inc. 411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// 511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// This file is part of the GNU ISO C++ Library. This library is free 611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// software; you can redistribute it and/or modify it under the terms 711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// of the GNU General Public License as published by the Free Software 811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// Foundation; either version 3, or (at your option) any later 911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// version. 1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// This library is distributed in the hope that it will be useful, but 1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// WITHOUT ANY WARRANTY; without even the implied warranty of 1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// General Public License for more details. 1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// Under Section 7 of GPL version 3, you are granted additional 1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// permissions described in the GCC Runtime Library Exception, version 1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// 3.1, as published by the Free Software Foundation. 1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// You should have received a copy of the GNU General Public License and 2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// a copy of the GCC Runtime Library Exception along with this program; 2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// <http://www.gnu.org/licenses/>. 2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/** @file parallel/sort.h 2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Parallel sorting algorithm switch. 2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * This file is a GNU parallel extension to the Standard C++ Library. 2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// Written by Johannes Singler. 3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef _GLIBCXX_PARALLEL_SORT_H 3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _GLIBCXX_PARALLEL_SORT_H 1 3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/basic_iterator.h> 3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/features.h> 3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/parallel.h> 3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_ASSERTIONS 4011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/checkers.h> 4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_MERGESORT 4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/multiway_mergesort.h> 4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_QUICKSORT 4811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/quicksort.h> 4911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 5011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_BAL_QUICKSORT 5211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <parallel/balanced_quicksort.h> 5311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 5411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5511cd02dfb91661c65134cac258cf5924270e9d2Dan Albertnamespace __gnu_parallel 5611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert{ 5711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert //prototype 5811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, 5911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typename _Compare, typename _Parallelism> 6011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert void 6111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 6211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, _Parallelism __parallelism); 6311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 6411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 6511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose multiway mergesort, splitting variant at run-time, 6611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * for parallel sorting. 6711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 6811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 6911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 7011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 7111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 7211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 7311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 7411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 7511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 7611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, multiway_mergesort_tag __parallelism) 7711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 7811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 7911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 8011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert if(_Settings::get().sort_splitting == EXACT) 8111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert parallel_sort_mwms<__stable, true> 8211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, __parallelism.__get_num_threads()); 8311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert else 8411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert parallel_sort_mwms<__stable, false> 8511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, __parallelism.__get_num_threads()); 8611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 8711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 8811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 8911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose multiway mergesort with exact splitting, 9011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * for parallel sorting. 9111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 9211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 9311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 9411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 9511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 9611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 9711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 9811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 9911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 10011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, 10111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert multiway_mergesort_exact_tag __parallelism) 10211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 10311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 10411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert parallel_sort_mwms<__stable, true> 10611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, __parallelism.__get_num_threads()); 10711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 10811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 11011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose multiway mergesort with splitting by sampling, 11111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * for parallel sorting. 11211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 11311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 11411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 11511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 11611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 11711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 11811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 11911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 12011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 12111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, 12211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert multiway_mergesort_sampling_tag __parallelism) 12311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 12411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 12511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 12611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert parallel_sort_mwms<__stable, false> 12711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, __parallelism.__get_num_threads()); 12811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 12911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 13011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 13111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose quicksort for parallel sorting. 13211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 13311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 13411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 13511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 13611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 13711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 13811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 13911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 14011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 14111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, quicksort_tag __parallelism) 14211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 14311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 14411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 14511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_PARALLEL_ASSERT(__stable == false); 14611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 14711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort_qs(__begin, __end, __comp, 14811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallelism.__get_num_threads()); 14911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 15011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 15111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 15211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose balanced quicksort for parallel sorting. 15311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 15411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 15511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 15611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 15711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 15811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 15911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 16011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 16111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 16211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, balanced_quicksort_tag __parallelism) 16311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 16411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 16511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 16611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_PARALLEL_ASSERT(__stable == false); 16711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 16811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort_qsb(__begin, __end, __comp, 16911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallelism.__get_num_threads()); 17011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 17111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 17211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 17311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose multiway mergesort with exact splitting, 17411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * for parallel sorting. 17511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 17611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 17711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 17811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 17911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 18011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 18111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 18211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 18311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 18411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, default_parallel_tag __parallelism) 18511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 18611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 18711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 18811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort<__stable> 18911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, 19011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert multiway_mergesort_exact_tag(__parallelism.__get_num_threads())); 19111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 19211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 19311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert /** 19411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @brief Choose a parallel sorting algorithm. 19511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __begin Begin iterator of input sequence. 19611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __end End iterator of input sequence. 19711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @param __comp Comparator. 19811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @tparam __stable Sort stable. 19911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @callgraph 20011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 20111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert template<bool __stable, typename _RAIter, typename _Compare> 20211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert inline void 20311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort(_RAIter __begin, _RAIter __end, 20411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _Compare __comp, parallel_tag __parallelism) 20511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 20611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert _GLIBCXX_CALL(__end - __begin) 20711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::iterator_traits<_RAIter> _TraitsType; 20811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef typename _TraitsType::value_type _ValueType; 20911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef typename _TraitsType::difference_type _DifferenceType; 21011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 21111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert if (false) ; 21211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_MERGESORT 21311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert else if (__stable || _Settings::get().sort_algorithm == MWMS) 21411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 21511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert if(_Settings::get().sort_splitting == EXACT) 21611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert parallel_sort_mwms<__stable, true> 21711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, __parallelism.__get_num_threads()); 21811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert else 21911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert parallel_sort_mwms<false, false> 22011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__begin, __end, __comp, __parallelism.__get_num_threads()); 22111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 22211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 22311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_QUICKSORT 22411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert else if (_Settings::get().sort_algorithm == QS) 22511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort_qs(__begin, __end, __comp, 22611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallelism.__get_num_threads()); 22711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 22811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _GLIBCXX_BAL_QUICKSORT 22911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert else if (_Settings::get().sort_algorithm == QS_BALANCED) 23011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallel_sort_qsb(__begin, __end, __comp, 23111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __parallelism.__get_num_threads()); 23211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 23311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert else 23411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __gnu_sequential::sort(__begin, __end, __comp); 23511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 23611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert} // end namespace __gnu_parallel 23711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 23811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* _GLIBCXX_PARALLEL_SORT_H */ 239