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93 lines
2.1 KiB
93 lines
2.1 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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// Condition - C++ condition class |
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// ~~~~~~~~~ |
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// |
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#ifndef _OPENTHREADS_CONDITION_ |
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#define _OPENTHREADS_CONDITION_ |
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#include <OpenThreads/Exports> |
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#include <OpenThreads/Mutex> |
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namespace OpenThreads { |
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/** |
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* @class Condition |
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* @brief This class provides an object-oriented thread condition interface. |
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*/ |
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class OPENTHREAD_EXPORT_DIRECTIVE Condition { |
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public: |
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/** |
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* Constructor |
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*/ |
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Condition(); |
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/** |
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* Destructor |
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*/ |
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virtual ~Condition(); |
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/** |
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* Wait on a mutex. |
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*/ |
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virtual int wait(Mutex *mutex); |
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/** |
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* Wait on a mutex for a given amount of time (ms) |
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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 wait(Mutex *mutex, unsigned long int ms); |
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/** |
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* Signal a SINGLE thread to wake if it's waiting. |
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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 signal(); |
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/** |
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* Wake all threads waiting on this condition. |
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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 broadcast(); |
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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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Condition(const Condition &/*c*/) {}; |
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/** |
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* Private copy assignment, to prevent tampering. |
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*/ |
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Condition &operator=(const Condition &/*c*/) {return *(this);}; |
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/** |
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* Implementation-specific data |
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*/ |
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void *_prvData; |
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}; |
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} |
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#endif // !_OPENTHREADS_CONDITION_
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