/*
 *  Copyright (c) 2017 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef KISREADWRITELOCKPOLICY_H
#define KISREADWRITELOCKPOLICY_H

#include <boost/utility.hpp>

#include <QReadLocker>
#include <QWriteLocker>
#include "KisUpgradeToWriteLocker.h"

struct NormalLockPolicy {
    typedef QReadLocker ReadLocker;
    typedef QWriteLocker WriteLocker;
};

struct UpgradeLockPolicy {
    struct FakeLocker : private boost::noncopyable {
        FakeLocker(QReadWriteLock *) {}
    };

    typedef FakeLocker ReadLocker;
    typedef KisUpgradeToWriteLocker WriteLocker;
};

struct NoLockPolicy {
    struct FakeLocker : private boost::noncopyable {
        FakeLocker(QReadWriteLock *) {}
    };

    typedef FakeLocker ReadLocker;
    typedef FakeLocker WriteLocker;
};
#endif // KISREADWRITELOCKPOLICY_H
