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 // template <class Clock, class Duration> 20 // bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time); 21 22 #include <boost/thread/lock_types.hpp> 23 #include <boost/thread/shared_mutex.hpp> 24 #include <boost/detail/lightweight_test.hpp> 25 26 bool try_lock_until_called = false; 27 28 struct shared_mutex 29 { 30 template <class Clock, class Duration> try_lock_shared_untilshared_mutex31 bool try_lock_shared_until(const boost::chrono::time_point<Clock, Duration>& abs_time) 32 { 33 typedef boost::chrono::milliseconds ms; 34 BOOST_TEST(Clock::now() - abs_time < ms(5)); 35 try_lock_until_called = !try_lock_until_called; 36 return try_lock_until_called; 37 } unlock_sharedshared_mutex38 void unlock_shared() 39 { 40 } 41 }; 42 43 shared_mutex m; 44 main()45int main() 46 { 47 typedef boost::chrono::steady_clock Clock; 48 boost::shared_lock<shared_mutex> lk(m, boost::defer_lock); 49 BOOST_TEST(lk.try_lock_until(Clock::now()) == true); 50 BOOST_TEST(try_lock_until_called == true); 51 BOOST_TEST(lk.owns_lock() == true); 52 try 53 { 54 lk.try_lock_until(Clock::now()); 55 BOOST_TEST(false); 56 } 57 catch (boost::system::system_error& e) 58 { 59 BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur); 60 } 61 lk.unlock(); 62 BOOST_TEST(lk.try_lock_until(Clock::now()) == false); 63 BOOST_TEST(try_lock_until_called == false); 64 BOOST_TEST(lk.owns_lock() == false); 65 lk.release(); 66 try 67 { 68 lk.try_lock_until(Clock::now()); 69 BOOST_TEST(false); 70 } 71 catch (boost::system::system_error& e) 72 { 73 BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted); 74 } 75 return boost::report_errors(); 76 } 77