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- // Copyright (C) 2012 Vicente Botet
- //
- // Distributed under the Boost Software License, Version 1.0. (See accompanying
- // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- #include <boost/config.hpp>
- #if ! defined BOOST_NO_CXX11_DECLTYPE
- #define BOOST_RESULT_OF_USE_DECLTYPE
- #endif
- #define BOOST_THREAD_VERSION 4
- #define BOOST_THREAD_PROVIDES_EXECUTORS
- #include <boost/thread/experimental/task_region.hpp>
- #include <iostream>
- #if ! defined BOOST_NO_CXX11_RANGE_BASED_FOR && ! defined BOOST_NO_CXX11_LAMBDAS
- int fib_task_region(int n)
- {
- using boost::experimental::parallel::task_region;
- using boost::experimental::parallel::task_region_handle;
- if (n == 0) return 0;
- if (n == 1) return 1;
- int n1;
- int n2;
- task_region([&](task_region_handle& trh)
- {
- trh.run([&]
- {
- n1 = fib_task_region(n - 1);
- });
- n2 = fib_task_region(n - 2);
- });
- return n1 + n2;
- }
- #if defined BOOST_THREAD_PROVIDES_EXECUTORS
- template <class Ex>
- int fib_task_region_gen( Ex& ex, int n)
- {
- using boost::experimental::parallel::task_region;
- using boost::experimental::parallel::task_region_handle_gen;
- if (n == 0) return 0;
- if (n == 1) return 1;
- int n1;
- int n2;
- task_region(ex, [&](task_region_handle_gen<Ex>& trh)
- {
- trh.run([&]
- {
- n1 = fib_task_region(n - 1);
- });
- n2 = fib_task_region(n - 2);
- });
- return n1 + n2;
- }
- #endif
- int main()
- {
- for (int i = 0; i<10; ++i) {
- std::cout << fib_task_region(i) << " ";
- }
- std::cout << std::endl;
- #if defined BOOST_THREAD_PROVIDES_EXECUTORS
- boost::basic_thread_pool tp;
- for (int i = 0; i<10; ++i) {
- std::cout << fib_task_region_gen(tp,i) << " ";
- }
- std::cout << std::endl;
- #endif
- return 0;
- }
- #else
- int main()
- {
- return 0;
- }
- #endif
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