cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / c++ / 4.7 / parallel / for_each.h

diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/parallel/for_each.h b/i686-linux-gnu-4.7/usr/include/c++/4.7/parallel/for_each.h
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+// -*- 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/for_each.h
+ *  @brief Main interface for embarrassingly parallel functions.
+ *
+ *  The explicit implementation are in other header files, like
+ *  workstealing.h, par_loop.h, omp_loop.h, and omp_loop_static.h.
+ *  This file is a GNU parallel extension to the Standard C++ Library.
+ */
+
+// Written by Felix Putze.
+
+#ifndef _GLIBCXX_PARALLEL_FOR_EACH_H
+#define _GLIBCXX_PARALLEL_FOR_EACH_H 1
+
+#include <parallel/settings.h>
+#include <parallel/par_loop.h>
+#include <parallel/omp_loop.h>
+#include <parallel/workstealing.h>
+
+namespace __gnu_parallel
+{
+  /** @brief Chose the desired algorithm by evaluating @c __parallelism_tag.
+   *  @param __begin Begin iterator of input sequence.
+   *  @param __end End iterator of input sequence.
+   *  @param __user_op A user-specified functor (comparator, predicate,
+   *  associative operator,...)
+   *  @param __functionality functor to @a process an element with
+   *  __user_op (depends on desired functionality, e. g. accumulate,
+   *  for_each,...
+   *  @param __reduction Reduction functor.
+   *  @param __reduction_start Initial value for reduction.
+   *  @param __output Output iterator.
+   *  @param __bound Maximum number of elements processed.
+   *  @param __parallelism_tag Parallelization method */
+  template<typename _IIter, typename _UserOp,
+           typename _Functionality, typename _Red, typename _Result>
+    _UserOp
+    __for_each_template_random_access(_IIter __begin, _IIter __end,
+                                      _UserOp __user_op,
+                                      _Functionality& __functionality,
+                                      _Red __reduction,
+                                      _Result __reduction_start,
+                                      _Result& __output, typename
+                                      std::iterator_traits<_IIter>::
+                                      difference_type __bound,
+                                      _Parallelism __parallelism_tag)
+    {
+      if (__parallelism_tag == parallel_unbalanced)
+        return __for_each_template_random_access_ed
+         (__begin, __end, __user_op, __functionality, __reduction,
+          __reduction_start, __output, __bound);
+      else if (__parallelism_tag == parallel_omp_loop)
+        return __for_each_template_random_access_omp_loop
+         (__begin, __end, __user_op, __functionality, __reduction,
+          __reduction_start, __output, __bound);
+      else if (__parallelism_tag == parallel_omp_loop_static)
+        return __for_each_template_random_access_omp_loop
+         (__begin, __end, __user_op, __functionality, __reduction,
+          __reduction_start, __output, __bound);
+      else      //e. g. parallel_balanced
+        return __for_each_template_random_access_workstealing
+         (__begin, __end, __user_op, __functionality, __reduction,
+          __reduction_start, __output, __bound);
+  }
+}
+
+#endif /* _GLIBCXX_PARALLEL_FOR_EACH_H */