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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/****************************************************************************
**
** Copyright (C) 2008-2012 NVIDIA Corporation.
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Quick 3D.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include "qssgrenderthreadpool_p.h"
#if QT_CONFIG(thread)
#include <QtCore/QThreadPool>
#endif // END THREAD
#include <QtCore/QRunnable>
#include <QtCore/QHash>
#include <QtCore/QMutex>
#include <QtCore/QMutexLocker>
QT_BEGIN_NAMESPACE
namespace {
#if QT_CONFIG(thread)
class QSSGThreadPool;
class QSSGTask : public QRunnable
{
public:
QSSGTask(void *inUserData, QSSGTaskCallback inFunction, QSSGTaskCallback inCancelFunction, quint64 id, QSSGThreadPool *threadPool)
: m_userData(inUserData)
, m_function(inFunction)
, m_cancelFunction(inCancelFunction)
, m_id(id)
, m_taskState(TaskStates::Queued)
, m_threadPool(threadPool)
{
setAutoDelete(false);
}
TaskStates taskState()
{
QMutexLocker locker(&m_mutex);
return m_taskState;
}
void run() override;
void doFunction()
{
if (m_function)
m_function(m_userData);
}
bool doCancel()
{
{
QMutexLocker locker(&m_mutex);
if (m_taskState == TaskStates::Running)
return false;
}
if (m_cancelFunction)
m_cancelFunction(m_userData);
return true;
}
private:
void *m_userData;
QSSGTaskCallback m_function;
QSSGTaskCallback m_cancelFunction;
quint64 m_id;
TaskStates m_taskState;
QMutex m_mutex;
QSSGThreadPool *m_threadPool;
};
class QSSGThreadPool : public QSSGAbstractThreadPool
{
public:
QSSGThreadPool(qint32 numThreads);
~QSSGThreadPool() override;
quint64 addTask(void *inUserData, QSSGTaskCallback inFunction, QSSGTaskCallback inCancelFunction) override;
TaskStates getTaskState(quint64 inTaskId) override;
CancelReturnValues cancelTask(quint64 inTaskId) override;
// Called from another thread!
void taskFinished(quint64 inTaskId);
private:
static quint64 generateTaskID()
{
static quint64 taskID = 0;
return taskID++;
}
QThreadPool m_threadPool;
QHash<quint64, QSSGTask *> m_taskMap;
QMutex m_mutex;
};
void QSSGTask::run()
{
{
QMutexLocker locker(&m_mutex);
m_taskState = TaskStates::Running;
}
doFunction();
m_threadPool->taskFinished(m_id);
}
QSSGThreadPool::QSSGThreadPool(qint32 numThreads)
{
m_threadPool.setMaxThreadCount(numThreads);
}
QSSGThreadPool::~QSSGThreadPool()
{
QMutexLocker locker(&m_mutex);
for (auto task : m_taskMap.values()) {
if (m_threadPool.tryTake(task))
task->doCancel();
delete task;
}
}
quint64 QSSGThreadPool::addTask(void *inUserData, QSSGTaskCallback inFunction, QSSGTaskCallback inCancelFunction)
{
QMutexLocker locker(&m_mutex);
const quint64 taskID = generateTaskID();
auto task = new QSSGTask(inUserData, inFunction, inCancelFunction, taskID, this);
m_taskMap.insert(taskID, task);
m_threadPool.start(task);
return taskID;
}
TaskStates QSSGThreadPool::getTaskState(quint64 inTaskId)
{
QMutexLocker locker(&m_mutex);
auto task = m_taskMap.value(inTaskId, nullptr);
if (!task)
return TaskStates::UnknownTask;
return task->taskState();
}
CancelReturnValues QSSGThreadPool::cancelTask(quint64 inTaskId)
{
QMutexLocker locker(&m_mutex);
auto task = m_taskMap.value(inTaskId, nullptr);
if (!task)
return CancelReturnValues::TaskNotFound;
if (m_threadPool.tryTake(task))
if (task->doCancel()) {
auto task = m_taskMap.value(inTaskId);
delete task;
m_taskMap.remove(inTaskId);
return CancelReturnValues::TaskCanceled;
}
return CancelReturnValues::TaskRunning;
}
void QSSGThreadPool::taskFinished(quint64 inTaskId)
{
QMutexLocker locker(&m_mutex);
auto task = m_taskMap.value(inTaskId);
delete task;
m_taskMap.remove(inTaskId);
}
#else
class QSSGThreadPool : public QSSGAbstractThreadPool
{
public:
QSSGThreadPool(quint32) {}
~QSSGThreadPool() override {}
quint64 addTask(void *inUserData, QSSGTaskCallback inFunction, QSSGTaskCallback inCancelFunction) override
{
Q_UNUSED(inCancelFunction);
inFunction(inUserData);
return 0;
}
TaskStates getTaskState(quint64) override { return TaskStates::UnknownTask; }
CancelReturnValues cancelTask(quint64) override { return CancelReturnValues::TaskNotFound; }
};
#endif // END NO THREAD
}
QSSGAbstractThreadPool::~QSSGAbstractThreadPool() = default;
QSSGRef<QSSGAbstractThreadPool> QSSGAbstractThreadPool::createThreadPool(qint32 inNumThreads)
{
Q_ASSERT(inNumThreads > 0);
return QSSGRef<QSSGAbstractThreadPool>(new QSSGThreadPool(inNumThreads));
}
QT_END_NAMESPACE
|
