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/timed_mutex.hpp> 16 17 // class timed_mutex; 18 19 // bool try_lock(); 20 21 #include <boost/thread/mutex.hpp> 22 #include <boost/thread/thread.hpp> 23 #include <boost/detail/lightweight_test.hpp> 24 #include "../../../timming.hpp" 25 26 27 boost::timed_mutex m; 28 29 #if defined BOOST_THREAD_USES_CHRONO 30 typedef boost::chrono::high_resolution_clock Clock; 31 typedef Clock::time_point time_point; 32 typedef Clock::duration duration; 33 typedef boost::chrono::milliseconds ms; 34 typedef boost::chrono::nanoseconds ns; 35 time_point t0; 36 time_point t1; 37 #else 38 #endif 39 40 const ms max_diff(BOOST_THREAD_TEST_TIME_MS); 41 f()42void f() 43 { 44 #if defined BOOST_THREAD_USES_CHRONO 45 t0 = Clock::now(); 46 BOOST_TEST(!m.try_lock()); 47 BOOST_TEST(!m.try_lock()); 48 BOOST_TEST(!m.try_lock()); 49 while (!m.try_lock()) 50 ; 51 t1 = Clock::now(); 52 m.unlock(); 53 #else 54 //time_point t0 = Clock::now(); 55 //BOOST_TEST(!m.try_lock()); 56 //BOOST_TEST(!m.try_lock()); 57 //BOOST_TEST(!m.try_lock()); 58 while (!m.try_lock()) 59 ; 60 //time_point t1 = Clock::now(); 61 m.unlock(); 62 //ns d = t1 - t0 - ms(250); 63 //BOOST_TEST(d < max_diff); 64 #endif 65 } 66 main()67int main() 68 { 69 m.lock(); 70 boost::thread t(f); 71 #if defined BOOST_THREAD_USES_CHRONO 72 time_point t2 = Clock::now(); 73 boost::this_thread::sleep_for(ms(250)); 74 time_point t3 = Clock::now(); 75 #else 76 #endif 77 m.unlock(); 78 t.join(); 79 80 #if defined BOOST_THREAD_USES_CHRONO 81 ns sleep_time = t3 - t2; 82 ns d_ns = t1 - t0 - sleep_time; 83 ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns); 84 // BOOST_TEST_GE(d_ms.count(), 0); 85 BOOST_THREAD_TEST_IT(d_ms, max_diff); 86 BOOST_THREAD_TEST_IT(d_ns, ns(max_diff)); 87 #endif 88 89 return boost::report_errors(); 90 } 91 92 93