qgsreadwritelocker.h

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/***************************************************************************
                         qgsreadwritelocker.cpp
                         -------------------------
    begin                : September 2018
    copyright            : (C) 2018 by Matthias Kuhn
    email                : matthias@opengis.ch
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSREADWRITELOCKER_H
#define QGSREADWRITELOCKER_H
 
#include "qgis_core.h"
 
#include <QReadWriteLock>

class CORE_EXPORT QgsReadWriteLocker
{
  public:
    enum Mode
    {
      Read,    
      Write,   
      Unlocked 
    };

    QgsReadWriteLocker( QReadWriteLock &lock, Mode mode );

    void changeMode( Mode mode );

    void unlock();
 
    ~QgsReadWriteLocker();
 
  private:
#ifdef SIP_RUN
    QgsReadWriteLocker &operator=( const QgsReadWriteLocker & );
#endif
 
    QReadWriteLock &mLock;
    Mode mMode = Unlocked;
};
 
#endif // QGSREADWRITELOCKER_H