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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/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 "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 InputIterator, typename UserOp,
typename Functionality, typename Red, typename Result>
UserOp
for_each_template_random_access(InputIterator begin, InputIterator end,
UserOp user_op,
Functionality& functionality,
Red reduction, Result reduction_start,
Result& output, typename
std::iterator_traits<InputIterator>::
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 */
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