parallel_for_each.h Source File

00001 /*
00002     Copyright 2005-2009 Intel Corporation.  All Rights Reserved.
00003 
00004     The source code contained or described herein and all documents related
00005     to the source code ("Material") are owned by Intel Corporation or its
00006     suppliers or licensors.  Title to the Material remains with Intel
00007     Corporation or its suppliers and licensors.  The Material is protected
00008     by worldwide copyright laws and treaty provisions.  No part of the
00009     Material may be used, copied, reproduced, modified, published, uploaded,
00010     posted, transmitted, distributed, or disclosed in any way without
00011     Intel's prior express written permission.
00012 
00013     No license under any patent, copyright, trade secret or other
00014     intellectual property right is granted to or conferred upon you by
00015     disclosure or delivery of the Materials, either expressly, by
00016     implication, inducement, estoppel or otherwise.  Any license under such
00017     intellectual property rights must be express and approved by Intel in
00018     writing.
00019 */
00020 
00021 #ifndef __TBB_parallel_for_each_H
00022 #define __TBB_parallel_for_each_H
00023 
00024 #include "parallel_do.h"
00025 
00026 namespace tbb {
00027 
00029 namespace internal {
00030     // The class calls user function in operator()
00031     template <typename Function, typename Iterator>
00032     class parallel_for_each_body : internal::no_assign {
00033         Function &my_func;
00034     public:
00035         parallel_for_each_body(Function &_func) : my_func(_func) {}
00036         parallel_for_each_body(const parallel_for_each_body<Function, Iterator> &_caller) : my_func(_caller.my_func) {}
00037 
00038         void operator() ( typename std::iterator_traits<Iterator>::value_type value ) const {
00039             my_func(value);
00040         }
00041     };
00042 } // namespace internal
00044 
00048 
00049 
00050 template<typename InputIterator, typename Function>
00051 Function parallel_for_each(InputIterator first, InputIterator last, Function f, task_group_context &context) {
00052     internal::parallel_for_each_body<Function, InputIterator> body(f);
00053 
00054     tbb::parallel_do (first, last, body, context);
00055     return f;
00056 }
00057 
00059 template<typename InputIterator, typename Function>
00060 Function parallel_for_each(InputIterator first, InputIterator last, Function f) {
00061     internal::parallel_for_each_body<Function, InputIterator> body(f);
00062 
00063     tbb::parallel_do (first, last, body);
00064     return f;
00065 }
00066 
00068 
00069 } // namespace
00070 
00071 #endif /* __TBB_parallel_for_each_H */