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/shared_lock_guard.hpp> 16 17 // template <class Mutex> class shared_lock_guard; 18 19 // shared_lock_guard(mutex_type& m, adopt_lock_t); 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 "../../../../timming.hpp" 26 27 #if defined 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 #else 36 #endif 37 38 boost::shared_mutex m; 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 m.lock_shared(); 48 boost::shared_lock_guard<boost::shared_mutex> lg(m, boost::adopt_lock); 49 t1 = Clock::now(); 50 } 51 #else 52 //time_point t0 = Clock::now(); 53 //time_point t1; 54 { 55 m.lock_shared(); 56 boost::shared_lock_guard<boost::shared_mutex> lg(m, boost::adopt_lock); 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