qcleaner.h

00001 /***************************************************************************
00002  *   Copyright (C) 2004 by Gav Wood                                        *
00003  *   gav@kde.org                                                           *
00004  *                                                                         *
00005  *   This program is free software; you can redistribute it and/or modify  *
00006  *   it under the terms of the GNU General Public License as published by  *
00007  *   the Free Software Foundation; either version 2 of the License, or     *
00008  *   (at your option) any later version.                                   *
00009  *                                                                         *
00010  *   This program is distributed in the hope that it will be useful,       *
00011  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00012  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
00013  *   GNU General Public License for more details.                          *
00014  *                                                                         *
00015  *   You should have received a copy of the GNU General Public License     *
00016  *   along with this program; if not, write to the                         *
00017  *   Free Software Foundation, Inc.,                                       *
00018  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
00019  ***************************************************************************/
00020 
00021 #ifndef _QT_CLEANER_H
00022 #define _QT_CLEANER_H
00023 
00024 #include <qthread.h>
00025 #include <qmutex.h>
00026 #include <qptrlist.h>
00027 
00028 template<class X>
00029 class QCleaner: public QThread, private QMutex
00030 {
00031  QPtrList<X> theRow;
00032  int theInterval;
00033 
00034  void purgeAll()
00035  {
00036   QMutexLocker lock(this);
00037   theRow.clear();
00038  }
00039 
00040  void run()
00041  {
00042   while(1)
00043   { usleep(theInterval * 1000000);
00044    purgeAll();
00045   }
00046  }
00047 
00048 public:
00049  void deleteObject(X *theObject)
00050  {
00051   QMutexLocker lock(this);
00052   theRow.append(theObject);
00053  }
00054 
00055  QCleaner(int interval = 300): QThread()
00056  {
00057   theInterval = interval;
00058   theRow.setAutoDelete(true);
00059   start();
00060  }
00061 
00062  ~QCleaner()
00063  {
00064   terminate();
00065   wait();
00066   purgeAll();
00067  }
00068 };
00069 
00070 #endif

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