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71 lines
2.2 KiB
71 lines
2.2 KiB
14 years ago
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/* -*-c++-*- OpenThreads library, Copyright (C) 2002 - 2007 The Open Thread Group
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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//
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// ScopedLock and ReverseScopedLock templates
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// ~~~~~~~
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//
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#ifndef _ScopedLock_
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#define _ScopedLock_
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namespace OpenThreads{
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template <class M> class ScopedLock
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{
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private:
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M& m_lock;
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ScopedLock(const ScopedLock&); // prevent copy
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ScopedLock& operator=(const ScopedLock&); // prevent assign
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public:
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explicit ScopedLock(M& m):m_lock(m) {m_lock.lock();}
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~ScopedLock(){m_lock.unlock();}
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};
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template <class M> class ReverseScopedLock
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{
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private:
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M& m_lock;
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ReverseScopedLock(const ReverseScopedLock&); // prevent copy
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ReverseScopedLock& operator=(const ReverseScopedLock&); // prevent assign
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public:
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explicit ReverseScopedLock(M& m):m_lock(m) {m_lock.unlock();}
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~ReverseScopedLock(){m_lock.lock();}
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};
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template <class M> class ScopedPointerLock
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{
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private:
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M* m_lock;
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ScopedPointerLock(const ScopedPointerLock&); // prevent copy
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ScopedPointerLock& operator=(const ScopedPointerLock&); // prevent assign
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public:
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explicit ScopedPointerLock(M* m):m_lock(m) { if (m_lock) m_lock->lock();}
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~ScopedPointerLock(){ if (m_lock) m_lock->unlock();}
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};
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template <class M> class ReverseScopedPointerLock
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{
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private:
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M* m_lock;
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ReverseScopedPointerLock(const ReverseScopedPointerLock&); // prevent copy
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ReverseScopedPointerLock& operator=(const ReverseScopedPointerLock&); // prevent assign
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public:
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explicit ReverseScopedPointerLock(M* m):m_lock(m) { if (m_lock) m_lock->unlock();}
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~ReverseScopedPointerLock(){ if (m_lock) m_lock->lock();}
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};
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}
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#endif
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