47 lines
995 B
C++
47 lines
995 B
C++
/*
|
|
* \brief Lock guard
|
|
* \author Norman Feske
|
|
* \date 2006-07-26
|
|
*
|
|
* A lock guard is instantiated as a local variable.
|
|
* When a lock guard is constructed, it acquires the lock that
|
|
* is specified as constructor argument. When the control
|
|
* flow leaves the scope of the lock guard variable via
|
|
* a return statement or an exception, the lock guard's
|
|
* destructor gets called, freeing the lock.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2013 Genode Labs GmbH
|
|
*
|
|
* This file is part of the Genode OS framework, which is distributed
|
|
* under the terms of the GNU General Public License version 2.
|
|
*/
|
|
|
|
#ifndef _INCLUDE__BASE__LOCK_GUARD_H_
|
|
#define _INCLUDE__BASE__LOCK_GUARD_H_
|
|
|
|
namespace Genode {
|
|
|
|
/**
|
|
* Lock guard template
|
|
*
|
|
* \param LT lock type
|
|
*/
|
|
template <typename LT>
|
|
class Lock_guard
|
|
{
|
|
private:
|
|
|
|
LT &_lock;
|
|
|
|
public:
|
|
|
|
explicit Lock_guard(LT &lock) : _lock(lock) { _lock.lock(); }
|
|
|
|
~Lock_guard() { _lock.unlock(); }
|
|
};
|
|
}
|
|
|
|
#endif /* _INCLUDE__BASE__LOCK_GUARD_H_ */
|