QChangeArbiter d-pointered

Change-Id: Ic33650363629860ff23dfb048fa831dccf47b516
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/src/core/qchangearbiter_p.h b/src/core/qchangearbiter_p.h
new file mode 100644
index 000000000..50b64afff
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+++ b/src/core/qchangearbiter_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3D_QCHANGEARBITER_P_H
+#define QT3D_QCHANGEARBITER_P_H
+
+#include <private/qobject_p.h>
+#include <QMutex>
+#include <QThreadStorage>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3D {
+
+class QNode;
+class QChangeArbiter;
+class QObservableInterface;
+class QJobManagerInterface;
+
+typedef QVector<QSceneChangePtr> ChangeQueue;
+typedef QPair<ChangeFlags, QObserverInterface *> QObserverPair;
+typedef QList<QObserverPair> QObserverList;
+
+class QChangeArbiterPrivate : public QObjectPrivate
+{
+public:
+    QChangeArbiterPrivate(QChangeArbiter *qq);
+
+    Q_DECLARE_PUBLIC(QChangeArbiter)
+
+    QMutex m_mutex;
+    QJobManagerInterface *m_jobManager;
+
+    // The lists of observers indexed by observable. We maintain two
+    // distinct hashes:
+    //
+    // m_aspectObservations is for observables owned by aspects
+    // m_nodeObservations is for observables in the main thread's object tree
+    //
+    // We keep these distinct because we do not manage the main thread which means
+    // the mechanisms for working with objects there is different.
+    QHash<QObservableInterface *, QObserverList> m_aspectObservations;
+    QHash<QNode *, QObserverList> m_nodeObservations;
+
+    // Each thread has a TLS ChangeQueue so we never need to lock whilst
+    // receiving a QSceneChange.
+    QThreadStorage<ChangeQueue *> m_tlsChangeQueue;
+
+    // We store a list of the ChangeQueue's from each thread. This will only
+    // be accessed from the aspect thread during the syncChanges() phase.
+    QList<ChangeQueue *> m_changeQueues;
+    QList<ChangeQueue *> m_lockingChangeQueues;
+};
+
+} // Qt3D
+
+QT_END_NAMESPACE
+
+#endif // QT3D_QCHANGEARBITER_P_H