cachecleaner.h

/*
    Copyright (c) 2007 Volker Krause <[email protected]>

    This library is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 of the License, or (at your
    option) any later version.

    This library 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 Library General Public
    License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to the
    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    02110-1301, USA.
*/

#ifndef AKONADI_CACHECLEANER_H
#define AKONADI_CACHECLEANER_H

#include "collectionscheduler.h"

#include <QMutex>

namespace Akonadi
{
namespace Server
{

class Collection;
class CacheCleaner;
class AkonadiServer;

class CacheCleanerInhibitor
{
public:
    explicit CacheCleanerInhibitor(AkonadiServer &akonadi, bool inhibit = true);
    ~CacheCleanerInhibitor();

    void inhibit();
    void uninhibit();

private:
    Q_DISABLE_COPY(CacheCleanerInhibitor)
    static QMutex sLock;
    static int sInhibitCount;

    CacheCleaner *mCleaner = nullptr;
    bool mInhibited = false;
};

class CacheCleaner : public CollectionScheduler
{
    Q_OBJECT

public:
    explicit CacheCleaner(QObject *parent = nullptr);
    ~CacheCleaner() override;

protected:
    void collectionExpired(const Collection &collection) override;
    int collectionScheduleInterval(const Collection &collection) override;
    bool hasChanged(const Collection &collection, const Collection &changed) override;
    bool shouldScheduleCollection(const Collection &collection) override;

private:
    friend class CacheCleanerInhibitor;

};

} // namespace Server
} // namespace Akonadi

#endif