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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

#ifndef QT3DCORE_TASK_P_H

#define QT3DCORE_TASK_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtCore/QRunnable>

#include <QtCore/QSharedPointer>

#include <QtCore/QThread>

#include <QtCore/QtGlobal>

#include <Qt3DCore/private/qaspectjobmanager_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DCore {

class JobRunner;

class DependencyHandler;

class QThreadPooler;

class QSystemInformationService;

class RunnableInterface : public QRunnable

public:

    enum class RunnableType {

        AspectTask,

        SyncTask

};

    virtual ~RunnableInterface();

    virtual bool isRequired() const = 0;

    virtual void run() override = 0;

    virtual int id() = 0;

    virtual void setId(int id) = 0;

    virtual void setReserved(bool reserved) = 0;

    virtual bool reserved() = 0;

    virtual void setPooler(QThreadPooler *pooler) = 0;

    virtual RunnableType type() const = 0;

};

class AspectTaskRunnable : public RunnableInterface

public:

    AspectTaskRunnable(QSystemInformationService *service);

    ~AspectTaskRunnable();

    bool isRequired() const override;

    void run() override;

    void setPooler(QThreadPooler *pooler) override { m_pooler = pooler; }

    void setReserved(bool reserved) override { m_reserved = reserved; }

    bool reserved() override { return m_reserved; }

    int id() override { return m_id; }

    void setId(int id) override { m_id = id; }

    RunnableType type() const override { return RunnableType::AspectTask; }

public:

    QSharedPointer<QAspectJob> m_job;

    QList<AspectTaskRunnable *> m_dependers;

    int m_dependerCount = 0;

private:

    QSystemInformationService *m_service;

    QThreadPooler *m_pooler;

    int m_id; // For testing purposes for now

    bool m_reserved;

};

class SyncTaskRunnable : public RunnableInterface

public:

    explicit SyncTaskRunnable(QAbstractAspectJobManager::JobFunction func, void *arg,

                              QAtomicInt *atomicCount);

    ~SyncTaskRunnable();

    bool isRequired() const override;

    void run() override;

    void setPooler(QThreadPooler *pooler) override { m_pooler = pooler; }

    void setReserved(bool reserved) override { m_reserved = reserved; }

    bool reserved() override { return m_reserved; }

    int id() override { return m_id; }

    void setId(int id) override { m_id = id; }

    RunnableType type() const override { return RunnableType::SyncTask; }

private:

    QAbstractAspectJobManager::JobFunction m_func;

    void *m_arg;

    QAtomicInt *m_atomicCount;

    QThreadPooler *m_pooler;

    bool m_reserved;

    int m_id;

};

} // namespace Qt3DCore

QT_END_NAMESPACE

#endif // QT3DCORE_TASK_P_H