Mutex
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上传日期:2022-04-05
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文件大小:2k
- //
- // OpenThreads library, Copyright (C) 2002 - 2003 The Open Thread Group
- //
- // This library is free software; you can redistribute it and/or
- // modify it under the terms of the GNU Lesser General Public
- // License as published by the Free Software Foundation; either
- // version 2.1 of the License, or (at your option) any later version.
- //
- // This library is distributed in the hope that it will be useful,
- // but WITHOUT ANY WARRANTY; without even the implied warranty of
- // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- // Lesser General Public License for more details.
- //
- // You should have received a copy of the GNU Lesser General Public
- // License along with this library; if not, write to the Free Software
- // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- //
- //
- // Mutex - C++ mutex class
- // ~~~~~
- //
- #ifndef _OPENTHREADS_MUTEX_
- #define _OPENTHREADS_MUTEX_
- #include "Exports"
- namespace OpenThreads {
- /**
- * @class Mutex
- * @brief This class provides an object-oriented thread mutex interface.
- */
- class OPENTHREAD_EXPORT_DIRECTIVE Mutex {
- friend class Condition;
- public:
- /**
- * Constructor
- */
- Mutex();
- /**
- * Destructor
- */
- virtual ~Mutex();
- /**
- * Lock the mutex
- *
- * @return 0 if normal, -1 if errno set, errno code otherwise.
- */
- virtual int lock();
- /**
- * Unlock the mutex
- *
- * @return 0 if normal, -1 if errno set, errno code otherwise.
- */
- virtual int unlock();
- /**
- * Test if mutex can be locked.
- *
- * @return 0 if normal, -1 if errno set, errno code otherwise.
- */
- virtual int trylock();
- private:
- /**
- * Private copy constructor, to prevent tampering.
- */
- Mutex(const Mutex &) {};
- /**
- * Private copy assignment, to prevent tampering.
- */
- Mutex &operator=(const Mutex &) {return *(this);};
- /**
- * Implementation-specific private data.
- */
- void *_prvData;
- };
- }
- #endif // _OPENTHREADS_MUTEX_