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) 2012 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/locks.hpp> 16 17 // template <class Mutex> class lock_guard; 18 19 // lock_guard(mutex_type& m, adopt_lock_t); 20 21 #include <boost/thread/lock_guard.hpp> 22 #include <boost/thread/mutex.hpp> 23 #include <boost/thread/thread.hpp> 24 #include <boost/detail/lightweight_test.hpp> 25 #include "../../../../timming.hpp" 26 27 #ifdef BOOST_THREAD_USES_CHRONO 28 typedef boost::chrono::high_resolution_clock Clock; 29 typedef Clock::time_point time_point; 30 typedef Clock::duration duration; 31 typedef boost::chrono::milliseconds ms; 32 typedef boost::chrono::nanoseconds ns; 33 time_point t0; 34 time_point t1; 35 #endif 36 boost::mutex m; 37 38 const ms max_diff(BOOST_THREAD_TEST_TIME_MS); 39 f()40void f() 41 { 42 #ifdef BOOST_THREAD_USES_CHRONO 43 t0 = Clock::now(); 44 { 45 m.lock(); 46 boost::lock_guard<boost::mutex> lg(m, boost::adopt_lock); 47 t1 = Clock::now(); 48 } 49 #else 50 //time_point t0 = Clock::now(); 51 //time_point t1; 52 { 53 m.lock(); 54 boost::lock_guard<boost::mutex> lg(m, boost::adopt_lock); 55 //t1 = Clock::now(); 56 } 57 //ns d = t1 - t0 - ms(250); 58 //BOOST_TEST(d < max_diff); 59 #endif 60 } 61 main()62int main() 63 { 64 m.lock(); 65 boost::thread t(f); 66 #ifdef BOOST_THREAD_USES_CHRONO 67 time_point t2 = Clock::now(); 68 boost::this_thread::sleep_for(ms(250)); 69 time_point t3 = Clock::now(); 70 #endif 71 m.unlock(); 72 t.join(); 73 74 #if defined BOOST_THREAD_USES_CHRONO 75 ns sleep_time = t3 - t2; 76 ns d_ns = t1 - t0 - sleep_time; 77 ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns); 78 // BOOST_TEST_GE(d_ms.count(), 0); 79 BOOST_THREAD_TEST_IT(d_ms, max_diff); 80 BOOST_THREAD_TEST_IT(d_ns, ns(max_diff)); 81 #endif 82 83 return boost::report_errors(); 84 } 85 86