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 // Copyright (C) 2011 Vicente J. Botet Escriba 10 // 11 // Distributed under the Boost Software License, Version 1.0. (See accompanying 12 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 13 14 // <boost/thread/thread.hpp> 15 16 // thread::id this_thread::get_id(); 17 18 #include <boost/thread/thread_only.hpp> 19 #include <cstdlib> 20 #include <algorithm> 21 22 #include <boost/detail/lightweight_test.hpp> 23 24 #if defined BOOST_THREAD_USES_CHRONO 25 main()26int main() 27 { 28 { 29 typedef boost::chrono::system_clock Clock; 30 typedef Clock::time_point time_point; 31 boost::chrono::milliseconds ms(500); 32 time_point t0 = Clock::now(); 33 boost::this_thread::sleep_for(ms); 34 time_point t1 = Clock::now(); 35 boost::chrono::nanoseconds ns = (t1 - t0) - ms; 36 boost::chrono::nanoseconds err = ms / 100; 37 // The time slept is within 1% of 500ms 38 // This test is spurious as it depends on the time the thread system switches the threads 39 BOOST_TEST((std::max)(ns.count(), -ns.count()) < (err+boost::chrono::milliseconds(1000)).count()); 40 //BOOST_TEST(std::abs(static_cast<long>(ns.count())) < (err+boost::chrono::milliseconds(1000)).count()); 41 } 42 { 43 typedef boost::chrono::system_clock Clock; 44 typedef Clock::time_point time_point; 45 boost::chrono::milliseconds ms(500); 46 time_point t0 = Clock::now(); 47 boost::this_thread::no_interruption_point::sleep_for(ms); 48 time_point t1 = Clock::now(); 49 boost::chrono::nanoseconds ns = (t1 - t0) - ms; 50 boost::chrono::nanoseconds err = ms / 100; 51 // The time slept is within 1% of 500ms 52 // This test is spurious as it depends on the time the thread system switches the threads 53 BOOST_TEST((std::max)(ns.count(), -ns.count()) < (err+boost::chrono::milliseconds(1000)).count()); 54 //BOOST_TEST(std::abs(static_cast<long>(ns.count())) < (err+boost::chrono::milliseconds(1000)).count()); 55 } 56 return boost::report_errors(); 57 58 } 59 60 #else 61 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported" 62 #endif 63 64