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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/include/parallel/types.h
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+// -*- 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/types.h
+ * @brief Basic types and typedefs.
+ * This file is a GNU parallel extension to the Standard C++ Library.
+ */
+
+// Written by Johannes Singler and Felix Putze.
+
+#ifndef _GLIBCXX_PARALLEL_TYPES_H
+#define _GLIBCXX_PARALLEL_TYPES_H 1
+
+#include <cstdlib>
+#include <limits>
+#include <tr1/cstdint>
+
+namespace __gnu_parallel
+{
+ // Enumerated types.
+
+ /// Run-time equivalents for the compile-time tags.
+ enum _Parallelism
+ {
+ /// Not parallel.
+ sequential,
+
+ /// Parallel unbalanced (equal-sized chunks).
+ parallel_unbalanced,
+
+ /// Parallel balanced (work-stealing).
+ parallel_balanced,
+
+ /// Parallel with OpenMP dynamic load-balancing.
+ parallel_omp_loop,
+
+ /// Parallel with OpenMP static load-balancing.
+ parallel_omp_loop_static,
+
+ /// Parallel with OpenMP taskqueue construct.
+ parallel_taskqueue
+ };
+
+ /// Strategies for run-time algorithm selection:
+ // force_sequential, force_parallel, heuristic.
+ enum _AlgorithmStrategy
+ {
+ heuristic,
+ force_sequential,
+ force_parallel
+ };
+
+ /// Sorting algorithms:
+ // multi-way mergesort, quicksort, load-balanced quicksort.
+ enum _SortAlgorithm
+ {
+ MWMS,
+ QS,
+ QS_BALANCED
+ };
+
+ /// Merging algorithms:
+ // bubblesort-alike, loser-tree variants, enum __sentinel.
+ enum _MultiwayMergeAlgorithm
+ {
+ LOSER_TREE
+ };
+
+ /// Partial sum algorithms: recursive, linear.
+ enum _PartialSumAlgorithm
+ {
+ RECURSIVE,
+ LINEAR
+ };
+
+ /// Sorting/merging algorithms: sampling, __exact.
+ enum _SplittingAlgorithm
+ {
+ SAMPLING,
+ EXACT
+ };
+
+ /// Find algorithms:
+ // growing blocks, equal-sized blocks, equal splitting.
+ enum _FindAlgorithm
+ {
+ GROWING_BLOCKS,
+ CONSTANT_SIZE_BLOCKS,
+ EQUAL_SPLIT
+ };
+
+ /**
+ * @brief Unsigned integer to index __elements.
+ * The total number of elements for each algorithm must fit into this type.
+ */
+ typedef uint64_t _SequenceIndex;
+
+ /**
+ * @brief Unsigned integer to index a thread number.
+ * The maximum thread number (for each processor) must fit into this type.
+ */
+ typedef uint16_t _ThreadIndex;
+
+ // XXX atomics interface?
+ /// Longest compare-and-swappable integer type on this platform.
+ typedef int64_t _CASable;
+
+ /// Number of bits of _CASable.
+ static const int _CASable_bits = std::numeric_limits<_CASable>::digits;
+
+ /// ::_CASable with the right half of bits set to 1.
+ static const _CASable _CASable_mask =
+ ((_CASable(1) << (_CASable_bits / 2)) - 1);
+}
+
+#endif /* _GLIBCXX_PARALLEL_TYPES_H */