1 //===----------------------------------------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Copyright (C) 2011 Vicente J. Botet Escriba
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)
15 // <boost/thread/locks.hpp>
17 // template <class Mutex> class unique_lock;
19 // explicit operator bool() const;
21 #include <boost/thread/lock_types.hpp>
22 #include <boost/thread/mutex.hpp>
23 #include <boost/detail/lightweight_test.hpp>
30 boost::unique_lock<boost::mutex> lk0;
31 BOOST_TEST(bool(lk0) == false);
32 boost::unique_lock<boost::mutex> lk1(m);
33 BOOST_TEST(bool(lk1) == true);
35 BOOST_TEST(bool(lk1) == false);
39 boost::unique_lock<boost::mutex> lk0;
40 if (lk0) BOOST_TEST(false);
41 boost::unique_lock<boost::mutex> lk1(m);
42 if (!lk1) BOOST_TEST(false);
44 if (lk1) BOOST_TEST(false);
46 return boost::report_errors();