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 upgrade_lock;
19 // template <class Rep, class Period>
20 // bool try_lock_for(const chrono::duration<Rep, Period>& rel_time);
22 #include <boost/thread/lock_types.hpp>
23 //#include <boost/thread/shared_mutex.hpp>
24 #include <boost/detail/lightweight_test.hpp>
26 bool try_lock_called
= false;
30 bool try_lock_upgrade()
32 try_lock_called
= !try_lock_called
;
33 return try_lock_called
;
44 boost::upgrade_lock
<shared_mutex
> lk(m
, boost::defer_lock
);
45 BOOST_TEST(lk
.try_lock() == true);
46 BOOST_TEST(try_lock_called
== true);
47 BOOST_TEST(lk
.owns_lock() == true);
53 catch (boost::system::system_error
& e
)
55 BOOST_TEST(e
.code().value() == boost::system::errc::resource_deadlock_would_occur
);
58 BOOST_TEST(lk
.try_lock() == false);
59 BOOST_TEST(try_lock_called
== false);
60 BOOST_TEST(lk
.owns_lock() == false);
67 catch (boost::system::system_error
& e
)
69 BOOST_TEST(e
.code().value() == boost::system::errc::operation_not_permitted
);
72 return boost::report_errors();