Condition
上传用户:chinafayin
上传日期:2022-04-05
资源大小:153k
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
- //
- //
- // Condition - C++ condition class
- // ~~~~~~~~~
- //
- #ifndef _OPENTHREADS_CONDITION_
- #define _OPENTHREADS_CONDITION_
- #include "Exports"
- #include "Mutex"
- namespace OpenThreads {
- /**
- * @class Condition
- * @brief This class provides an object-oriented thread condition interface.
- */
- class OPENTHREAD_EXPORT_DIRECTIVE Condition {
- public:
- /**
- * Constructor
- */
- Condition();
- /**
- * Destructor
- */
- virtual ~Condition();
- /**
- * Wait on a mutex.
- */
- int wait(Mutex *mutex);
- /**
- * Wait on a mutex for a given amount of time (ms)
- *
- * @return 0 if normal, -1 if errno set, errno code otherwise.
- */
- int wait(Mutex *mutex, unsigned long int ms);
- /**
- * Signal a SINGLE thread to wake if it's waiting.
- *
- * @return 0 if normal, -1 if errno set, errno code otherwise.
- */
- int signal();
- /**
- * Wake all threads waiting on this condition.
- *
- * @return 0 if normal, -1 if errno set, errno code otherwise.
- */
- int broadcast();
- private:
- /**
- * Private copy constructor, to prevent tampering.
- */
- Condition(const Condition &) {};
- /**
- * Private copy assignment, to prevent tampering.
- */
- Condition &operator=(const Condition &) {return *(this);};
- /**
- * Implementation-specific data
- */
- void *_prvData;
- };
- }
- #endif // !_OPENTHREADS_CONDITION_