Fawkes API
Fawkes Development Version
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00001 00002 /*************************************************************************** 00003 * scoped_rwlock.h - Scoped read/write lock 00004 * 00005 * Created: Mon Jan 10 11:42:56 2011 00006 * Copyright 2006-2010 Tim Niemueller [www.niemueller.de] 00007 * 00008 ****************************************************************************/ 00009 00010 /* This program is free software; you can redistribute it and/or modify 00011 * it under the terms of the GNU General Public License as published by 00012 * the Free Software Foundation; either version 2 of the License, or 00013 * (at your option) any later version. A runtime exception applies to 00014 * this software (see LICENSE.GPL_WRE file mentioned below for details). 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Library General Public License for more details. 00020 * 00021 * Read the full text in the LICENSE.GPL_WRE file in the doc directory. 00022 */ 00023 00024 #ifndef __CORE_THREADING_SCOPED_RWLOCK_H_ 00025 #define __CORE_THREADING_SCOPED_RWLOCK_H_ 00026 00027 #include <core/utils/refptr.h> 00028 00029 namespace fawkes { 00030 00031 class ReadWriteLock; 00032 00033 class ScopedRWLock 00034 { 00035 public: 00036 /** What to lock for. */ 00037 typedef enum { 00038 LOCK_WRITE, ///< Lock for writing 00039 LOCK_READ ///< Lock for reading 00040 } LockType; 00041 00042 ScopedRWLock(RefPtr<ReadWriteLock> rwlock, LockType lock_type = LOCK_WRITE, 00043 bool initially_lock = true); 00044 ScopedRWLock(ReadWriteLock *rwlock, LockType lock_type = LOCK_WRITE, 00045 bool initially_lock = true); 00046 ~ScopedRWLock(); 00047 00048 void relock(); 00049 void unlock(); 00050 00051 private: 00052 LockType __lock_type; 00053 bool __locked; 00054 RefPtr<ReadWriteLock> __refrwlock; 00055 ReadWriteLock *__rawrwlock; 00056 }; 00057 00058 00059 } // end namespace fawkes 00060 00061 #endif