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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/parallel/for_each.h')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/parallel/for_each.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/parallel/for_each.h b/gcc-4.4.3/libstdc++-v3/include/parallel/for_each.h new file mode 100644 index 000000000..61158f865 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/parallel/for_each.h @@ -0,0 +1,97 @@ +// -*- 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 */ |