--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2007, 2008, 2009, 2010 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/omp_loop_static.h
+ * @brief Parallelization of embarrassingly parallel execution by
+ * means of an OpenMP for loop with static scheduling.
+ * This file is a GNU parallel extension to the Standard C++ Library.
+ */
+
+// Written by Felix Putze.
+
+#ifndef _GLIBCXX_PARALLEL_OMP_LOOP_STATIC_H
+#define _GLIBCXX_PARALLEL_OMP_LOOP_STATIC_H 1
+
+#include <omp.h>
+
+#include <parallel/settings.h>
+#include <parallel/basic_iterator.h>
+
+namespace __gnu_parallel
+{
+ /** @brief Embarrassingly parallel algorithm for random access
+ * iterators, using an OpenMP for loop with static scheduling.
+ *
+ * @param __begin Begin iterator of element sequence.
+ * @param __end End iterator of element sequence.
+ * @param __o User-supplied functor (comparator, predicate, adding
+ * functor, ...).
+ * @param __f Functor to @a process an element with __op (depends on
+ * desired functionality, e. g. for std::for_each(), ...).
+ * @param __r Functor to @a add a single __result to the already processed
+ * __elements (depends on functionality).
+ * @param __base Base value for reduction.
+ * @param __output Pointer to position where final result is written to
+ * @param __bound Maximum number of elements processed (e. g. for
+ * std::count_n()).
+ * @return User-supplied functor (that may contain a part of the result).
+ */
+ template<typename _RAIter,
+ typename _Op,
+ typename _Fu,
+ typename _Red,
+ typename _Result>
+ _Op
+ __for_each_template_random_access_omp_loop_static(_RAIter __begin,
+ _RAIter __end, _Op __o,
+ _Fu& __f, _Red __r,
+ _Result __base,
+ _Result& __output,
+ typename std::iterator_traits<_RAIter>::difference_type __bound)
+ {
+ typedef typename std::iterator_traits<_RAIter>::difference_type
+ _DifferenceType;
+
+ _DifferenceType __length = __end - __begin;
+ _ThreadIndex __num_threads = std::min<_DifferenceType>
+ (__get_max_threads(), __length);
+
+ _Result *__thread_results;
+
+# pragma omp parallel num_threads(__num_threads)
+ {
+# pragma omp single
+ {
+ __num_threads = omp_get_num_threads();
+ __thread_results = new _Result[__num_threads];
+
+ for (_ThreadIndex __i = 0; __i < __num_threads; ++__i)
+ __thread_results[__i] = _Result();
+ }
+
+ _ThreadIndex __iam = omp_get_thread_num();
+
+#pragma omp for schedule(static, _Settings::get().workstealing_chunk_size)
+ for (_DifferenceType __pos = 0; __pos < __length; ++__pos)
+ __thread_results[__iam] = __r(__thread_results[__iam],
+ __f(__o, __begin+__pos));
+ } //parallel
+
+ for (_ThreadIndex __i = 0; __i < __num_threads; ++__i)
+ __output = __r(__output, __thread_results[__i]);
+
+ delete [] __thread_results;
+
+ // Points to last element processed (needed as return value for
+ // some algorithms like transform).
+ __f.finish_iterator = __begin + __length;
+
+ return __o;
+ }
+
+} // end namespace
+
+#endif /* _GLIBCXX_PARALLEL_OMP_LOOP_STATIC_H */
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