/usr/include/mirtest/mir/test/auto_unblock_thread.h is in mirtest-dev 0.26.3+16.04.20170605-0ubuntu1.1.
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* Copyright © 2014 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Alberto Aguirre <alberto.aguirre@canonical.com>
*/
/** AutoUnblockThread is a helper thread class that can gracefully shutdown
* at destruction time. This is helpul for tests that botch create
* threads and use ASSERT macros for example (or any other condition that
* makes the test exit early). Using naked std::thread would call std::terminate
* under such conditions.
*/
#ifndef MIR_TEST_AUTO_UNBLOCK_THREAD_H_
#define MIR_TEST_AUTO_UNBLOCK_THREAD_H_
#include <thread>
#include <functional>
namespace mir
{
namespace test
{
class AutoJoinThread
{
public:
AutoJoinThread() = default;
template<typename Callable, typename... Args>
explicit AutoJoinThread(Callable&& f,
Args&&... args)
: thread{std::forward<Callable>(f), std::forward<Args>(args)...}
{}
~AutoJoinThread()
{
stop();
}
void stop()
{
if (thread.joinable())
thread.join();
}
std::thread::native_handle_type native_handle()
{
return thread.native_handle();
}
AutoJoinThread(AutoJoinThread&& t) = default;
AutoJoinThread& operator=(AutoJoinThread&& t) = default;
private:
std::thread thread;
};
class AutoUnblockThread : public AutoJoinThread
{
public:
AutoUnblockThread() = default;
template<typename Callable, typename... Args>
explicit AutoUnblockThread(std::function<void(void)> const& unblock,
Callable&& f,
Args&&... args)
: AutoJoinThread{std::forward<Callable>(f), std::forward<Args>(args)...},
unblock{unblock}
{}
~AutoUnblockThread()
{
stop();
}
AutoUnblockThread(AutoUnblockThread&& t) = default;
AutoUnblockThread& operator=(AutoUnblockThread&& t) = default;
void stop()
{
if (unblock)
unblock();
AutoJoinThread::stop();
}
private:
std::function<void(void)> unblock;
};
}
}
#endif
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