Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / include / parallel / types.h

diff --git a/libstdc++-v3/include/parallel/types.h b/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>
+
+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 
+    };
+
+  /// Integer Types.
+  // XXX need to use <cstdint>
+  /** @brief 16-bit signed integer. */
+  typedef short int16;
+
+  /** @brief 16-bit unsigned integer. */
+  typedef unsigned short uint16;
+
+  /** @brief 32-bit signed integer. */
+  typedef int int32;
+
+  /** @brief 32-bit unsigned integer. */
+  typedef unsigned int uint32;
+
+  /** @brief 64-bit signed integer. */
+  typedef long long int64;
+
+  /** @brief 64-bit unsigned integer. */
+  typedef unsigned long long uint64;
+
+  /**
+   * @brief Unsigned integer to index elements.
+   * The total number of elements for each algorithm must fit into this type.
+   */
+  typedef uint64 sequence_index_t;
+
+  /**
+   * @brief Unsigned integer to index a thread number.
+   * The maximum thread number (for each processor) must fit into this type.
+   */
+  typedef uint16 thread_index_t;
+
+  // XXX atomics interface?
+  /// Longest compare-and-swappable integer type on this platform.
+  typedef int64 lcas_t;
+
+  // XXX numeric_limits::digits?
+  /// Number of bits of ::lcas_t.
+  static const int lcas_t_bits = sizeof(lcas_t) * 8;
+
+  /// ::lcas_t with the right half of bits set to 1.
+  static const lcas_t lcas_t_mask = ((lcas_t(1) << (lcas_t_bits / 2)) - 1);
+}
+
+#endif /* _GLIBCXX_PARALLEL_TYPES_H */