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poco/Foundation/include/Poco/ScopedUnlock.h
2014-09-29 12:09:01 +02:00

67 lines
1.1 KiB
C++

//
// ScopedUnlock.h
//
// $Id: //poco/1.4/Foundation/include/Poco/ScopedUnlock.h#1 $
//
// Library: Foundation
// Package: Threading
// Module: Mutex
//
// Definition of the ScopedUnlock template class.
//
// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_ScopedUnlock_INCLUDED
#define Foundation_ScopedUnlock_INCLUDED
#include "Poco/Foundation.h"
namespace Poco {
template <class M>
class ScopedUnlock
/// A class that simplifies thread synchronization
/// with a mutex.
/// The constructor accepts a Mutex and unlocks it.
/// The destructor locks the mutex.
{
public:
inline ScopedUnlock(M& mutex, bool unlockNow = true): _mutex(mutex)
{
if (unlockNow)
_mutex.unlock();
}
inline ~ScopedUnlock()
{
try
{
_mutex.lock();
}
catch (...)
{
poco_unexpected();
}
}
private:
M& _mutex;
ScopedUnlock();
ScopedUnlock(const ScopedUnlock&);
ScopedUnlock& operator = (const ScopedUnlock&);
};
} // namespace Poco
#endif // Foundation_ScopedUnlock_INCLUDED