98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
// -*- 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 */
|