52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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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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#ifndef OSGDB_REENTRANTMUTEX
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#define OSGDB_REENTRANTMUTEX
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#include <OpenThreads/Thread>
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#include <OpenThreads/Mutex>
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#include <osgDB/Export>
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namespace osgDB {
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class OSGDB_EXPORT ReentrantMutex : public OpenThreads::Mutex
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{
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public:
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ReentrantMutex();
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virtual ~ReentrantMutex();
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virtual int lock();
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virtual int unlock();
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virtual int trylock();
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private:
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ReentrantMutex(const ReentrantMutex &):Mutex() {}
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ReentrantMutex &operator=(const ReentrantMutex &) {return *(this);}
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OpenThreads::Thread* _threadHoldingMutex;
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unsigned int _lockCount;
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};
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}
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#endif
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