101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
//------------------------------------------------------------------------------
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// Copyright (c) 2001-2002, OpenBeOS
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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// File Name: ObjectLocker.h
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// Author(s): Erik Jaesler (erik@cgsoftware.com)
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// Description: A templatized version of BAutolock. Client class needs to
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// supply:
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// bool Lock() -- returns whether lock succeeded
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// void Unlock() -- unlocks the class
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//------------------------------------------------------------------------------
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#ifndef OBJECTLOCKER_H
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#define OBJECTLOCKER_H
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// Standard Includes -----------------------------------------------------------
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// System Includes -------------------------------------------------------------
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// Project Includes ------------------------------------------------------------
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// Local Includes --------------------------------------------------------------
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// Local Defines ---------------------------------------------------------------
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// Globals ---------------------------------------------------------------------
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namespace BPrivate {
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template<class T>
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class BObjectLocker
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{
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public:
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inline BObjectLocker(T* looper);
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inline BObjectLocker(T& locker);
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inline ~BObjectLocker();
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inline bool IsLocked(void);
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private:
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T* fLockClient;
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bool fIsLocked;
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};
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template<class T>
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BObjectLocker<T>::BObjectLocker(T* client)
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: fLockClient(client), fIsLocked(client->Lock())
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{
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}
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template<class T>
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BObjectLocker<T>::BObjectLocker(T& client)
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: fLockClient(&client), fIsLocked(client.Lock())
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{
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}
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template<class T>
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BObjectLocker<T>::~BObjectLocker()
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{
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if (fIsLocked)
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{
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fLockClient->Unlock();
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}
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}
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template<class T>
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bool BObjectLocker<T>::IsLocked(void)
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{
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return fIsLocked;
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}
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} // namespace BPrivate
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#endif //OBJECTLOCKER_H
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/*
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* $Log $
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*
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* $Id $
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*
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*/
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