91 lines
3.9 KiB
C++
91 lines
3.9 KiB
C++
// -*- C++ -*-
|
|
|
|
// Copyright (C) 2007-2016 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 */
|