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(mutex_type& m, adopt_lock_t); 20 21 #include <boost/thread/lock_types.hpp> 22 #include <boost/thread/shared_mutex.hpp> 23 #include <boost/detail/lightweight_test.hpp> 24 main()25int main() 26 { 27 boost::shared_mutex m; 28 m.lock(); 29 boost::upgrade_lock<boost::shared_mutex> lk(m, boost::defer_lock); 30 BOOST_TEST(lk.mutex() == &m); 31 BOOST_TEST(lk.owns_lock() == false); 32 33 return boost::report_errors(); 34 } 35 36