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/mutex.hpp> 16 17 // class mutex; 18 19 // void lock(); 20 21 #include <boost/thread/mutex.hpp> 22 #include <boost/thread/thread.hpp> 23 #include <boost/detail/lightweight_test.hpp> 24 25 26 boost::mutex m; 27 28 #if defined BOOST_THREAD_USES_CHRONO 29 typedef boost::chrono::system_clock Clock; 30 typedef Clock::time_point time_point; 31 typedef Clock::duration duration; 32 typedef boost::chrono::milliseconds ms; 33 typedef boost::chrono::nanoseconds ns; 34 #else 35 #endif 36 f()37void f() 38 { 39 #if defined BOOST_THREAD_USES_CHRONO 40 time_point t0 = Clock::now(); 41 m.lock(); 42 time_point t1 = Clock::now(); 43 m.unlock(); 44 ns d = t1 - t0 - ms(250); 45 // This test is spurious as it depends on the time the thread system switches the threads 46 BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms 47 #else 48 //time_point t0 = Clock::now(); 49 m.lock(); 50 //time_point t1 = Clock::now(); 51 m.unlock(); 52 //ns d = t1 - t0 - ms(250); 53 // This test is spurious as it depends on the time the thread system switches the threads 54 //BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms 55 #endif 56 } 57 main()58int main() 59 { 60 m.lock(); 61 boost::thread t(f); 62 #if defined BOOST_THREAD_USES_CHRONO 63 boost::this_thread::sleep_for(ms(250)); 64 #endif 65 m.unlock(); 66 t.join(); 67 68 return boost::report_errors(); 69 } 70 71 72