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