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101 lines
2.0 KiB
101 lines
2.0 KiB
/* -*-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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// Mutex - C++ mutex class
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// ~~~~~
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//
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#ifndef _OPENTHREADS_MUTEX_
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#define _OPENTHREADS_MUTEX_
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#include <OpenThreads/Exports>
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namespace OpenThreads {
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/**
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* @class Mutex
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* @brief This class provides an object-oriented thread mutex interface.
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*/
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class OPENTHREAD_EXPORT_DIRECTIVE Mutex {
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friend class Condition;
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public:
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enum MutexType
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{
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MUTEX_NORMAL,
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MUTEX_RECURSIVE
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};
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/**
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* Constructor
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*/
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Mutex(MutexType type=MUTEX_NORMAL);
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/**
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* Destructor
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*/
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virtual ~Mutex();
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MutexType getMutexType() const { return _mutexType; }
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/**
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* Lock the mutex
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*
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* @return 0 if normal, -1 if errno set, errno code otherwise.
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*/
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virtual int lock();
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/**
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* Unlock the mutex
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*
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* @return 0 if normal, -1 if errno set, errno code otherwise.
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*/
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virtual int unlock();
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/**
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* Test if mutex can be locked.
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*
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* @return 0 if normal, -1 if errno set, errno code otherwise.
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*/
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virtual int trylock();
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private:
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/**
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* Private copy constructor, to prevent tampering.
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*/
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Mutex(const Mutex &/*m*/) {};
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/**
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* Private copy assignment, to prevent tampering.
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*/
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Mutex &operator=(const Mutex &/*m*/) {return *(this);};
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/**
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* Implementation-specific private data.
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*/
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void *_prvData;
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MutexType _mutexType;
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};
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}
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#endif // _OPENTHREADS_MUTEX_
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