1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // Copyright (C) 2013 Vicente J. Botet Escriba 11 // 12 // Distributed under the Boost Software License, Version 1.0. (See accompanying 13 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 14 15 // <boost/thread/future.hpp> 16 17 // class shared_future<R> 18 19 // template <class Rep, class Period> 20 // void wait() const; 21 22 //#define BOOST_THREAD_VERSION 3 23 #define BOOST_THREAD_VERSION 4 24 //#define BOOST_THREAD_USES_LOG 25 #define BOOST_THREAD_USES_LOG_THREAD_ID 26 #include <boost/thread/detail/log.hpp> 27 28 #include <boost/thread/future.hpp> 29 #include <boost/thread/thread.hpp> 30 #include <boost/chrono/chrono_io.hpp> 31 #include <boost/detail/lightweight_test.hpp> 32 33 #if defined BOOST_THREAD_USES_CHRONO 34 35 #ifdef BOOST_MSVC 36 #pragma warning(disable: 4127) // conditional expression is constant 37 #endif 38 39 typedef boost::chrono::milliseconds ms; 40 41 namespace boost 42 { 43 template <typename OStream> operator <<(OStream & os,boost::future_status st)44 OStream& operator<<(OStream& os , boost::future_status st ) 45 { 46 os << underlying_cast<int>(st) << " "; 47 return os; 48 } 49 } 50 func1(boost::promise<int> p)51void func1(boost::promise<int> p) 52 { 53 boost::this_thread::sleep_for(ms(500)); 54 p.set_value(3); 55 } 56 57 int j = 0; 58 func3(boost::promise<int &> p)59void func3(boost::promise<int&> p) 60 { 61 boost::this_thread::sleep_for(ms(500)); 62 j = 5; 63 p.set_value(j); 64 } 65 func5(boost::promise<void> p)66void func5(boost::promise<void> p) 67 { 68 boost::this_thread::sleep_for(ms(500)); 69 p.set_value(); 70 } 71 main()72int main() 73 { 74 BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; 75 { 76 typedef boost::chrono::high_resolution_clock Clock; 77 { 78 typedef int T; 79 boost::promise<T> p; 80 boost::shared_future<T> f((p.get_future())); 81 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD) 82 boost::thread(func1, boost::move(p)).detach(); 83 #else 84 func1(boost::move(p)); 85 #endif 86 BOOST_TEST(f.valid()); 87 f.wait(); 88 BOOST_TEST(f.valid()); 89 Clock::time_point t0 = Clock::now(); 90 f.wait(); 91 Clock::time_point t1 = Clock::now(); 92 BOOST_TEST(f.valid()); 93 BOOST_TEST(t1 - t0 < ms(50)); 94 } 95 { 96 typedef int& T; 97 boost::promise<T> p; 98 boost::shared_future<T> f((p.get_future())); 99 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD) 100 boost::thread(func3, boost::move(p)).detach(); 101 #else 102 func3(boost::move(p)); 103 #endif 104 BOOST_TEST(f.valid()); 105 f.wait(); 106 BOOST_TEST(f.valid()); 107 Clock::time_point t0 = Clock::now(); 108 f.wait(); 109 Clock::time_point t1 = Clock::now(); 110 BOOST_TEST(f.valid()); 111 BOOST_TEST(t1 - t0 < ms(50)); 112 } 113 { 114 typedef void T; 115 boost::promise<T> p; 116 boost::shared_future<T> f((p.get_future())); 117 #if defined BOOST_THREAD_PROVIDES_SIGNATURE_PACKAGED_TASK && defined(BOOST_THREAD_PROVIDES_VARIADIC_THREAD) 118 boost::thread(func5, boost::move(p)).detach(); 119 #else 120 func5(boost::move(p)); 121 #endif 122 BOOST_TEST(f.valid()); 123 f.wait(); 124 BOOST_TEST(f.valid()); 125 Clock::time_point t0 = Clock::now(); 126 f.wait(); 127 Clock::time_point t1 = Clock::now(); 128 BOOST_TEST(f.valid()); 129 BOOST_TEST(t1 - t0 < ms(50)); 130 } 131 } 132 BOOST_THREAD_LOG << BOOST_THREAD_END_LOG; 133 134 return boost::report_errors(); 135 } 136 137 #else 138 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported" 139 #endif 140