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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <qcoreapplication.h>
#include <qcoreevent.h>
#include <qthread.h>
class QTestAliveEvent: public QEvent
{
public:
enum { AliveEventType = QEvent::User + 422 };
explicit inline QTestAliveEvent(int aSequenceId)
: QEvent(QEvent::Type(AliveEventType)), seqId(aSequenceId)
{}
inline int sequenceId() const { return seqId; }
private:
int seqId;
};
class QTestAlivePinger: public QObject
{
public:
QTestAlivePinger(QObject *receiver, QObject *parent = 0);
bool event(QEvent *e);
protected:
void timerEvent(QTimerEvent *event);
private:
QObject *rec;
int timerId;
int currentSequenceId;
int lastSequenceId;
};
QTestAlivePinger::QTestAlivePinger(QObject *receiver, QObject *parent)
: QObject(parent), rec(receiver), currentSequenceId(0), lastSequenceId(0)
{
if (!rec)
qFatal("Null receiver object passed to QTestAlivePinger::QTestAlivePinger()");
timerId = startTimer(850);
}
bool QTestAlivePinger::event(QEvent *event)
{
// pong received
if (int(event->type()) == QTestAliveEvent::AliveEventType) {
QTestAliveEvent *e = static_cast<QTestAliveEvent *>(event);
//qDebug("PONG %d received", e->sequenceId());
// if the events are not delivered in order, we don't care.
if (e->sequenceId() > lastSequenceId)
lastSequenceId = e->sequenceId();
return true;
}
return QObject::event(event);
}
void QTestAlivePinger::timerEvent(QTimerEvent *event)
{
if (event->timerId() != timerId)
return;
if (lastSequenceId < currentSequenceId - 2) {
qWarning("TEST LAGS %d PINGS behind!", currentSequenceId - lastSequenceId);
}
++currentSequenceId;
//qDebug("PING %d", currentSequenceId);
QCoreApplication::postEvent(rec, new QTestAliveEvent(currentSequenceId));
}
class QTestAlive: public QThread
{
public:
QTestAlive(QObject *parent = 0);
~QTestAlive();
void run();
bool event(QEvent *e);
private:
QTestAlivePinger *pinger;
};
QTestAlive::QTestAlive(QObject *parent)
: QThread(parent), pinger(0)
{
}
QTestAlive::~QTestAlive()
{
quit();
while (isRunning());
}
bool QTestAlive::event(QEvent *e)
{
if (int(e->type()) == QTestAliveEvent::AliveEventType && pinger) {
// ping received, send back the pong
//qDebug("PONG %d", static_cast<QTestAliveEvent *>(e)->sequenceId());
QCoreApplication::postEvent(pinger,
new QTestAliveEvent(static_cast<QTestAliveEvent *>(e)->sequenceId()));
return true;
}
return QThread::event(e);
}
void QTestAlive::run()
{
if (!QCoreApplication::instance())
qFatal("QTestAlive::run(): Cannot start QTestAlive without a QCoreApplication instance.");
QTestAlivePinger p(this);
pinger = &p;
exec();
pinger = 0;
}
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