Index: gcc/libstdc++-v3/include/parallel/search.h |
diff --git a/gcc/libstdc++-v3/include/parallel/search.h b/gcc/libstdc++-v3/include/parallel/search.h |
deleted file mode 100644 |
index 31a8534029b8e6e10ee1ceeeced9bbc6a941e43b..0000000000000000000000000000000000000000 |
--- a/gcc/libstdc++-v3/include/parallel/search.h |
+++ /dev/null |
@@ -1,172 +0,0 @@ |
-// -*- C++ -*- |
- |
-// Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc. |
-// |
-// This file is part of the GNU ISO C++ Library. This library is free |
-// software; you can redistribute it and/or modify it under the terms |
-// of the GNU General Public License as published by the Free Software |
-// Foundation; either version 3, or (at your option) any later |
-// version. |
- |
-// This library is distributed in the hope that it will be useful, but |
-// WITHOUT ANY WARRANTY; without even the implied warranty of |
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
-// General Public License for more details. |
- |
-// Under Section 7 of GPL version 3, you are granted additional |
-// permissions described in the GCC Runtime Library Exception, version |
-// 3.1, as published by the Free Software Foundation. |
- |
-// You should have received a copy of the GNU General Public License and |
-// a copy of the GCC Runtime Library Exception along with this program; |
-// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
-// <http://www.gnu.org/licenses/>. |
- |
-/** @file parallel/search.h |
- * @brief Parallel implementation base for std::search() and |
- * std::search_n(). |
- * This file is a GNU parallel extension to the Standard C++ Library. |
- */ |
- |
-// Written by Felix Putze. |
- |
-#ifndef _GLIBCXX_PARALLEL_SEARCH_H |
-#define _GLIBCXX_PARALLEL_SEARCH_H 1 |
- |
-#include <bits/stl_algobase.h> |
- |
-#include <parallel/parallel.h> |
-#include <parallel/equally_split.h> |
- |
- |
-namespace __gnu_parallel |
-{ |
- /** |
- * @brief Precalculate advances for Knuth-Morris-Pratt algorithm. |
- * @param elements Begin iterator of sequence to search for. |
- * @param length Length of sequence to search for. |
- * @param advances Returned offsets. |
- */ |
-template<typename RandomAccessIterator, typename _DifferenceTp> |
- void |
- calc_borders(RandomAccessIterator elements, _DifferenceTp length, |
- _DifferenceTp* off) |
- { |
- typedef _DifferenceTp difference_type; |
- |
- off[0] = -1; |
- if (length > 1) |
- off[1] = 0; |
- difference_type k = 0; |
- for (difference_type j = 2; j <= length; j++) |
- { |
- while ((k >= 0) && !(elements[k] == elements[j-1])) |
- k = off[k]; |
- off[j] = ++k; |
- } |
- } |
- |
- // Generic parallel find algorithm (requires random access iterator). |
- |
- /** @brief Parallel std::search. |
- * @param begin1 Begin iterator of first sequence. |
- * @param end1 End iterator of first sequence. |
- * @param begin2 Begin iterator of second sequence. |
- * @param end2 End iterator of second sequence. |
- * @param pred Find predicate. |
- * @return Place of finding in first sequences. */ |
-template<typename _RandomAccessIterator1, |
- typename _RandomAccessIterator2, |
- typename Pred> |
- _RandomAccessIterator1 |
- search_template(_RandomAccessIterator1 begin1, _RandomAccessIterator1 end1, |
- _RandomAccessIterator2 begin2, _RandomAccessIterator2 end2, |
- Pred pred) |
- { |
- typedef std::iterator_traits<_RandomAccessIterator1> traits_type; |
- typedef typename traits_type::difference_type difference_type; |
- |
- _GLIBCXX_CALL((end1 - begin1) + (end2 - begin2)); |
- |
- difference_type pattern_length = end2 - begin2; |
- |
- // Pattern too short. |
- if(pattern_length <= 0) |
- return end1; |
- |
- // Last point to start search. |
- difference_type input_length = (end1 - begin1) - pattern_length; |
- |
- // Where is first occurrence of pattern? defaults to end. |
- difference_type result = (end1 - begin1); |
- difference_type *splitters; |
- |
- // Pattern too long. |
- if (input_length < 0) |
- return end1; |
- |
- omp_lock_t result_lock; |
- omp_init_lock(&result_lock); |
- |
- thread_index_t num_threads = |
- std::max<difference_type>(1, |
- std::min<difference_type>(input_length, get_max_threads())); |
- |
- difference_type advances[pattern_length]; |
- calc_borders(begin2, pattern_length, advances); |
- |
-# pragma omp parallel num_threads(num_threads) |
- { |
-# pragma omp single |
- { |
- num_threads = omp_get_num_threads(); |
- splitters = new difference_type[num_threads + 1]; |
- equally_split(input_length, num_threads, splitters); |
- } |
- |
- thread_index_t iam = omp_get_thread_num(); |
- |
- difference_type start = splitters[iam], stop = splitters[iam + 1]; |
- |
- difference_type pos_in_pattern = 0; |
- bool found_pattern = false; |
- |
- while (start <= stop && !found_pattern) |
- { |
- // Get new value of result. |
- #pragma omp flush(result) |
- // No chance for this thread to find first occurrence. |
- if (result < start) |
- break; |
- while (pred(begin1[start + pos_in_pattern], |
- begin2[pos_in_pattern])) |
- { |
- ++pos_in_pattern; |
- if (pos_in_pattern == pattern_length) |
- { |
- // Found new candidate for result. |
- omp_set_lock(&result_lock); |
- result = std::min(result, start); |
- omp_unset_lock(&result_lock); |
- |
- found_pattern = true; |
- break; |
- } |
- } |
- // Make safe jump. |
- start += (pos_in_pattern - advances[pos_in_pattern]); |
- pos_in_pattern = |
- (advances[pos_in_pattern] < 0) ? 0 : advances[pos_in_pattern]; |
- } |
- } //parallel |
- |
- omp_destroy_lock(&result_lock); |
- |
- delete[] splitters; |
- |
- // Return iterator on found element. |
- return (begin1 + result); |
- } |
-} // end namespace |
- |
-#endif /* _GLIBCXX_PARALLEL_SEARCH_H */ |