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 shared_lock; 18 19 // explicit shared_lock(Mutex& m); 20 21 #include <boost/thread/lock_types.hpp> 22 #include <boost/thread/shared_mutex.hpp> 23 #include <boost/thread/thread.hpp> 24 #include <boost/detail/lightweight_test.hpp> 25 #include "../../../../../timming.hpp" 26 27 boost::shared_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 { 47 boost::shared_lock<boost::shared_mutex> ul(m); 48 t1 = Clock::now(); 49 } 50 #else 51 //time_point t0 = Clock::now(); 52 //time_point t1; 53 { 54 boost::shared_lock<boost::shared_mutex> ul(m); 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 #if defined 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 #else 71 #endif 72 m.unlock(); 73 t.join(); 74 75 #if defined BOOST_THREAD_USES_CHRONO 76 ns sleep_time = t3 - t2; 77 ns d_ns = t1 - t0 - sleep_time; 78 ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns); 79 // BOOST_TEST_GE(d_ms.count(), 0); 80 BOOST_THREAD_TEST_IT(d_ms, max_diff); 81 BOOST_THREAD_TEST_IT(d_ns, ns(max_diff)); 82 #endif 83 84 return boost::report_errors(); 85 } 86 87