1 // Copyright (C) 2013 Vicente Botet 2 // 3 // Distributed under the Boost Software License, Version 1.0. (See accompanying 4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 5 6 7 #include <boost/config.hpp> 8 #if ! defined BOOST_NO_CXX11_DECLTYPE 9 #define BOOST_RESULT_OF_USE_DECLTYPE 10 #endif 11 12 #define BOOST_THREAD_VERSION 4 13 //#define BOOST_THREAD_USES_LOG 14 #define BOOST_THREAD_USES_LOG_THREAD_ID 15 16 #include <boost/thread/detail/log.hpp> 17 #include <boost/thread/future.hpp> 18 #include <boost/assert.hpp> 19 #include <string> 20 #include <iostream> 21 22 #if defined BOOST_THREAD_PROVIDES_FUTURE_CONTINUATION \ 23 && ! defined BOOST_NO_CXX11_LAMBDAS && ! (defined BOOST_MSVC && _MSC_VER < 1800) // works since msvc-12.0 24 25 #ifdef BOOST_MSVC 26 #pragma warning(disable: 4127) // conditional expression is constant 27 #endif 28 main()29int main() 30 { 31 const int number_of_tests = 100; 32 BOOST_THREAD_LOG << "<MAIN" << BOOST_THREAD_END_LOG; 33 34 for (int i=0; i< number_of_tests; i++) 35 try 36 { 37 { 38 boost::future<int> f1 = boost::async(boost::launch::async, []() {return 123;}); 39 int result = f1.get(); 40 BOOST_THREAD_LOG << "f1 " << result << BOOST_THREAD_END_LOG; 41 } 42 { 43 boost::future<int> f1 = boost::async(boost::launch::async, []() {return 123;}); 44 boost::future<int> f2 = f1.then([](boost::future<int> f) {return 2*f.get(); }); 45 int result = f2.get(); 46 BOOST_THREAD_LOG << "f2 " << result << BOOST_THREAD_END_LOG; 47 } 48 #if ! defined BOOST_NO_CXX14_GENERIC_LAMBDAS 49 { 50 boost::future<int> f1 = boost::async(boost::launch::async, []() {return 123;}); 51 boost::future<int> f2 = f1.then([](auto f) {return 2*f.get(); }); 52 int result = f2.get(); 53 BOOST_THREAD_LOG << "f2 " << result << BOOST_THREAD_END_LOG; 54 } 55 #endif 56 } 57 catch (std::exception& ex) 58 { 59 std::cout << "ERRORRRRR "<<ex.what() << "" << std::endl; 60 BOOST_THREAD_LOG << "ERRORRRRR "<<ex.what() << "" << BOOST_THREAD_END_LOG; 61 return 1; 62 } 63 catch (...) 64 { 65 std::cout << " ERRORRRRR exception thrown" << std::endl; 66 BOOST_THREAD_LOG << " ERRORRRRR exception thrown" << BOOST_THREAD_END_LOG; 67 return 2; 68 } 69 BOOST_THREAD_LOG << "MAIN>" << BOOST_THREAD_END_LOG; 70 return 0; 71 } 72 #else 73 74 //#warning "This test is not supported in this configuration, either because Bosst.Thread has been configured to don't support continuations, the compiler doesn't provides lambdas or because they are buggy as for MSV versions < msvc-12.0" 75 main()76int main() 77 { 78 return 0; 79 } 80 #endif 81