KisReadWriteLockPolicy.h

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/*
 *  SPDX-FileCopyrightText: 2017 Dmitry Kazakov <dimula73@gmail.com>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 */
 
#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