| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Copyright (C) 2011 Vicente J. Botet Escriba |
| // |
| // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| // <boost/thread/locks.hpp> |
| |
| // template <class Mutex> class upgrade_lock; |
| |
| // template <class Rep, class Period> |
| // bool try_lock_for(const chrono::duration<Rep, Period>& rel_time); |
| |
| #include <boost/thread/lock_types.hpp> |
| //#include <boost/thread/shared_mutex.hpp> |
| #include <boost/detail/lightweight_test.hpp> |
| |
| bool try_lock_called = false; |
| |
| struct shared_mutex |
| { |
| bool try_lock_upgrade() |
| { |
| try_lock_called = !try_lock_called; |
| return try_lock_called; |
| } |
| void unlock_upgrade() |
| { |
| } |
| }; |
| |
| shared_mutex m; |
| |
| int main() |
| { |
| boost::upgrade_lock<shared_mutex> lk(m, boost::defer_lock); |
| BOOST_TEST(lk.try_lock() == true); |
| BOOST_TEST(try_lock_called == true); |
| BOOST_TEST(lk.owns_lock() == true); |
| try |
| { |
| lk.try_lock(); |
| BOOST_TEST(false); |
| } |
| catch (boost::system::system_error& e) |
| { |
| BOOST_TEST(e.code().value() == boost::system::errc::resource_deadlock_would_occur); |
| } |
| lk.unlock(); |
| BOOST_TEST(lk.try_lock() == false); |
| BOOST_TEST(try_lock_called == false); |
| BOOST_TEST(lk.owns_lock() == false); |
| lk.release(); |
| try |
| { |
| lk.try_lock(); |
| BOOST_TEST(false); |
| } |
| catch (boost::system::system_error& e) |
| { |
| BOOST_TEST(e.code().value() == boost::system::errc::operation_not_permitted); |
| } |
| |
| return boost::report_errors(); |
| } |
| |