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 upgrade_lock; 18 19 // upgrade_lock(upgrade_lock const&) = delete; 20 21 22 #include <boost/thread/lock_types.hpp> 23 #include <boost/thread/shared_mutex.hpp> 24 #include <boost/detail/lightweight_test.hpp> 25 26 boost::shared_mutex m0; 27 boost::shared_mutex m1; 28 main()29int main() 30 { 31 boost::upgrade_lock<boost::shared_mutex> lk0(m0); 32 boost::upgrade_lock<boost::shared_mutex> lk1(lk0); 33 BOOST_TEST(lk1.mutex() == &m1); 34 BOOST_TEST(lk1.owns_lock() == true); 35 BOOST_TEST(lk0.mutex() == 0); 36 BOOST_TEST(lk0.owns_lock() == false); 37 } 38 39 #include "../../../../../remove_error_code_unused_warning.hpp" 40 41