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