qt-everywhere-src-5.14.1/qt3d/src/core/qscheduler.cpp

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#include "qscheduler_p.h"

#include <Qt3DCore/qabstractaspect.h>
#include <Qt3DCore/private/qaspectjob_p.h>
#include <Qt3DCore/private/qabstractaspect_p.h>
#include <Qt3DCore/private/qaspectmanager_p.h>
#include <Qt3DCore/private/qabstractaspectjobmanager_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DCore {

QScheduler::QScheduler(QObject *parent)
    : QObject(parent)
    , m_aspectManager(nullptr)
{
}

QScheduler::~QScheduler()
{
}

void QScheduler::setAspectManager(QAspectManager *aspectManager)
{
    m_aspectManager = aspectManager;
}

QAspectManager *QScheduler::aspectManager() const
{
    return m_aspectManager;
}

void QScheduler::scheduleAndWaitForFrameAspectJobs(qint64 time)
{
    QVector<QAspectJobPtr> jobQueue;

    // TODO: Allow clocks with custom scale factors and independent control
    //       over running / paused / stopped status
    // TODO: Advance all clocks registered with the engine

    // TODO: Set up dependencies between jobs as needed
    // For now just queue them up as they are
    const QVector<QAbstractAspect *> &aspects = m_aspectManager->aspects();
    for (QAbstractAspect *aspect : aspects) {
        const QVector<QAspectJobPtr> aspectJobs = QAbstractAspectPrivate::get(aspect)->jobsToExecute(time);
        jobQueue << aspectJobs;
    }

    m_aspectManager->jobManager()->enqueueJobs(jobQueue);

    // Do any other work here that the aspect thread can usefully be doing
    // whilst the threadpool works its way through the jobs

    m_aspectManager->jobManager()->waitForAllJobs();

    for (auto &job : qAsConst(jobQueue))
        QAspectJobPrivate::get(job.data())->postFrame(m_aspectManager);

    for (QAbstractAspect *aspect : aspects)
        QAbstractAspectPrivate::get(aspect)->jobsDone();
}

} // namespace Qt3DCore

QT_END_NAMESPACE