PacCorrelator.h

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/***************************************************************************
 *   Copyright (C) 2008-2010 by Matthias Nagl                              *
 *   mnagl@uni-goettingen.de                                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program 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 General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef PACCORRELATOR_H
#define PACCORRELATOR_H

#include <QThread>
#include <QSemaphore>

class PacEvent;
class PacEventChunk;

class PacCorrelator : public QThread
{
    Q_OBJECT
  public:
    PacCorrelator(QObject *parent = 0);
    ~PacCorrelator();
    void enqueue(PacEventChunk* c);
    void getQueueThroughput(qulonglong * const in, qulonglong * const drop, qulonglong * const size);
    void setBufferSize(quint32 size);
    void setMaxCorrelationLength(quint32 timeinps);

  protected:
    void run();

  private:
    QSemaphore usedbufferfield, freebufferfield;
    PacEventChunk **buffer;
    QAtomicInt stopthread;
    QAtomicInt qin, qdrop;
    qlonglong buffersize, writepos, readpos;
    quint32 maxcorrlength;
};

#endif