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 unique_lock; 18 19 // unique_lock(shared_lock&& u, try_to_lock); 20 21 #define BOOST_THREAD_PROVIDES_SHARED_MUTEX_UPWARDS_CONVERSIONS 22 #define BOOST_THREAD_PROVIDES_EXPLICIT_LOCK_CONVERSION 23 #define BOOST_THREAD_PROVIDES_GENERIC_SHARED_MUTEX_ON_WIN 24 25 #include <boost/thread/lock_types.hpp> 26 #include <boost/thread/shared_mutex.hpp> 27 #include <boost/detail/lightweight_test.hpp> 28 29 boost::shared_mutex m; 30 main()31int main() 32 { 33 { 34 boost::shared_lock<boost::shared_mutex> lk0(m); 35 boost::unique_lock<boost::shared_mutex> lk(boost::move(lk0), boost::try_to_lock ); 36 BOOST_TEST(lk.mutex() == &m); 37 BOOST_TEST(lk.owns_lock() == true); 38 BOOST_TEST(lk0.mutex() == 0); 39 BOOST_TEST(lk0.owns_lock() == false); 40 } 41 { 42 boost::unique_lock<boost::shared_mutex> lk(boost::shared_lock<boost::shared_mutex>(m), boost::try_to_lock); 43 BOOST_TEST(lk.mutex() == &m); 44 BOOST_TEST(lk.owns_lock() == true); 45 } 46 { 47 boost::shared_lock<boost::shared_mutex> lk0(m, boost::defer_lock); 48 boost::unique_lock<boost::shared_mutex> lk(boost::move(lk0), boost::try_to_lock); 49 BOOST_TEST(lk.mutex() == &m); 50 BOOST_TEST(lk.owns_lock() == false); 51 BOOST_TEST(lk0.mutex() == 0); 52 BOOST_TEST(lk0.owns_lock() == false); 53 } 54 { 55 boost::shared_lock<boost::shared_mutex> lk0(m, boost::defer_lock); 56 lk0.release(); 57 boost::unique_lock<boost::shared_mutex> lk(boost::move(lk0), boost::try_to_lock); 58 BOOST_TEST(lk.mutex() == 0); 59 BOOST_TEST(lk.owns_lock() == false); 60 BOOST_TEST(lk0.mutex() == 0); 61 BOOST_TEST(lk0.owns_lock() == false); 62 } 63 64 return boost::report_errors(); 65 } 66 67