blob: 238addee58d00dfafe9fe34b0e1b6c3ce93eeb75 (
plain)
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
|
// Copyright (C) 2014 BogDan Vatra <bogdan@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qandroideventdispatcher.h"
#include "androidjnimain.h"
#include "androiddeadlockprotector.h"
QAndroidEventDispatcher::QAndroidEventDispatcher(QObject *parent) :
QUnixEventDispatcherQPA(parent)
{
if (QtAndroid::blockEventLoopsWhenSuspended())
QAndroidEventDispatcherStopper::instance()->addEventDispatcher(this);
}
QAndroidEventDispatcher::~QAndroidEventDispatcher()
{
if (QtAndroid::blockEventLoopsWhenSuspended())
QAndroidEventDispatcherStopper::instance()->removeEventDispatcher(this);
}
enum States {Running = 0, StopRequest = 1, Stopping = 2};
void QAndroidEventDispatcher::start()
{
int prevState = m_stopRequest.fetchAndStoreAcquire(Running);
if (prevState == Stopping) {
m_semaphore.release();
wakeUp();
} else if (prevState == Running) {
qWarning("Error: start without corresponding stop");
}
//else if prevState == StopRequest, no action needed
}
void QAndroidEventDispatcher::stop()
{
if (m_stopRequest.testAndSetAcquire(Running, StopRequest))
wakeUp();
else
qWarning("Error: start/stop out of sync");
}
void QAndroidEventDispatcher::goingToStop(bool stop)
{
m_goingToStop.storeRelaxed(stop ? 1 : 0);
if (!stop)
wakeUp();
}
bool QAndroidEventDispatcher::processEvents(QEventLoop::ProcessEventsFlags flags)
{
if (m_goingToStop.loadRelaxed())
flags |= QEventLoop::ExcludeSocketNotifiers | QEventLoop::X11ExcludeTimers;
{
AndroidDeadlockProtector protector;
if (protector.acquire() && m_stopRequest.testAndSetAcquire(StopRequest, Stopping)) {
m_semaphore.acquire();
wakeUp();
}
}
return QUnixEventDispatcherQPA::processEvents(flags);
}
QAndroidEventDispatcherStopper *QAndroidEventDispatcherStopper::instance()
{
static QAndroidEventDispatcherStopper androidEventDispatcherStopper;
return &androidEventDispatcherStopper;
}
void QAndroidEventDispatcherStopper::startAll()
{
QMutexLocker lock(&m_mutex);
if (!m_started.testAndSetOrdered(0, 1))
return;
for (QAndroidEventDispatcher *d : qAsConst(m_dispatchers))
d->start();
}
void QAndroidEventDispatcherStopper::stopAll()
{
QMutexLocker lock(&m_mutex);
if (!m_started.testAndSetOrdered(1, 0))
return;
for (QAndroidEventDispatcher *d : qAsConst(m_dispatchers))
d->stop();
}
void QAndroidEventDispatcherStopper::addEventDispatcher(QAndroidEventDispatcher *dispatcher)
{
QMutexLocker lock(&m_mutex);
m_dispatchers.push_back(dispatcher);
}
void QAndroidEventDispatcherStopper::removeEventDispatcher(QAndroidEventDispatcher *dispatcher)
{
QMutexLocker lock(&m_mutex);
m_dispatchers.erase(std::find(m_dispatchers.begin(), m_dispatchers.end(), dispatcher));
}
void QAndroidEventDispatcherStopper::goingToStop(bool stop)
{
QMutexLocker lock(&m_mutex);
for (QAndroidEventDispatcher *d : qAsConst(m_dispatchers))
d->goingToStop(stop);
}
|
