1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/****************************************************************************
**
** 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 <QObject>
#include <QFlags>
#include <QReadWriteLock>
#include <QVariant>
#include <QVector>
#include <QPair>
#include <QThreadStorage>
#include <QMutex>
#include <Qt3DCore/qnodeid.h>
#include <Qt3DCore/qscenechange.h>
#include <Qt3DCore/private/qobserverinterface_p.h>
QT_BEGIN_NAMESPACE
namespace Qt3D {
class QNode;
class QObservableInterface;
class QAbstractAspectJobManager;
class QSceneObserverInterface;
class QPostman;
class QSceneInterface;
typedef QVector<QSceneChangePtr> ChangeQueue;
typedef QPair<ChangeFlags, QObserverInterface *> QObserverPair;
typedef QList<QObserverPair> QObserverList;
class QT3DCORESHARED_EXPORT QChangeArbiter
: public QObject
, public QObserverInterface
{
Q_OBJECT
public:
explicit QChangeArbiter(QObject *parent = 0);
~QChangeArbiter();
void initialize(Qt3D::QAbstractAspectJobManager *jobManager);
void syncChanges();
void registerObserver(QObserverInterface *observer,
const QNodeId &nodeId,
ChangeFlags changeFlags = AllChanges);
void unregisterObserver(QObserverInterface *observer,
const QNodeId &nodeId);
void registerSceneObserver(QSceneObserverInterface *observer);
void unregisterSceneObserver(QSceneObserverInterface *observer);
void sceneChangeEvent(const QSceneChangePtr &e) Q_DECL_OVERRIDE; // QObserverInterface impl
void sceneChangeEventWithLock(const QSceneChangePtr &e);
Q_INVOKABLE void setPostman(Qt3D::QObserverInterface *postman);
Q_INVOKABLE void setScene(Qt3D::QSceneInterface *scene);
QObserverInterface *postman() const;
QSceneInterface *scene() const;
static void createUnmanagedThreadLocalChangeQueue(void *changeArbiter);
static void destroyUnmanagedThreadLocalChangeQueue(void *changeArbiter);
static void createThreadLocalChangeQueue(void *changeArbiter);
static void destroyThreadLocalChangeQueue(void *changeArbiter);
protected:
typedef std::vector<QSceneChangePtr> ChangeQueue;
typedef QPair<ChangeFlags, QObserverInterface *> QObserverPair;
typedef QList<QObserverPair> QObserverList;
void distributeQueueChanges(ChangeQueue *queue);
QThreadStorage<ChangeQueue *> *tlsChangeQueue();
void appendChangeQueue(ChangeQueue *queue);
void removeChangeQueue(ChangeQueue *queue);
void appendLockingChangeQueue(ChangeQueue *queue);
void removeLockingChangeQueue(ChangeQueue *queue);
private:
QMutex m_mutex;
QAbstractAspectJobManager *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<QNodeId, QObserverList> m_nodeObservations;
QList<QSceneObserverInterface *> m_sceneObservers;
// 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;
QObserverInterface *m_postman;
QSceneInterface *m_scene;
};
} // namespace Qt3D
QT_END_NAMESPACE
#endif // QT3D_QCHANGEARBITER_P_H
|
