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) 2011 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/null_mutex> 16 17 // class null_mutex; 18 19 // template <class Clock, class Duration> 20 // bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time); 21 22 #include <boost/thread/null_mutex.hpp> 23 #include <boost/thread/thread.hpp> 24 #include <boost/detail/lightweight_test.hpp> 25 #include "../../../timming.hpp" 26 27 #if defined BOOST_THREAD_USES_CHRONO 28 29 boost::null_mutex m; 30 31 typedef boost::chrono::steady_clock Clock; 32 typedef Clock::time_point time_point; 33 typedef Clock::duration duration; 34 typedef boost::chrono::milliseconds ms; 35 typedef boost::chrono::nanoseconds ns; 36 37 const ms max_diff(BOOST_THREAD_TEST_TIME_MS); 38 f1()39void f1() 40 { 41 time_point t0 = Clock::now(); 42 BOOST_TEST(m.try_lock_until(Clock::now() + ms(250)) == true); 43 time_point t1 = Clock::now(); 44 m.unlock(); 45 ns d = t1 - t0 ; 46 BOOST_THREAD_TEST_IT(d, ns(max_diff)); 47 } 48 49 main()50int main() 51 { 52 { 53 m.lock(); 54 boost::thread t(f1); 55 m.unlock(); 56 t.join(); 57 } 58 59 return boost::report_errors(); 60 } 61 62 #else 63 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported" 64 #endif 65 66