kis_swapped_data_store.h

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/*
 *  SPDX-FileCopyrightText: 2010 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#ifndef __KIS_SWAPPED_DATA_STORE_H
#define __KIS_SWAPPED_DATA_STORE_H
 
#include "kritaimage_export.h"
 
#include <QMutex>
#include <QByteArray>
 
 
class QMutex;
class KisTileData;
class KisAbstractTileCompressor;
class KisChunkAllocator;
class KisMemoryWindow;
 
class KRITAIMAGE_EXPORT KisSwappedDataStore
{
public:
    KisSwappedDataStore();
    ~KisSwappedDataStore();
 
    quint64 numTiles() const;
 
    bool trySwapOutTileData(KisTileData *td);
 
    void swapInTileData(KisTileData *td);
 
    void forgetTileData(KisTileData *td);
 
    qint64 totalSwapMemoryUsed() const;
 
    void debugStatistics();
 
private:
    QByteArray m_buffer;
    KisAbstractTileCompressor *m_compressor;
 
    KisChunkAllocator *m_allocator;
    KisMemoryWindow *m_swapSpace;
 
    QMutex m_lock;
 
    qint64 m_totalSwapMemoryUsed;
};
 
#endif /* __KIS_SWAPPED_DATA_STORE_H */