Files
pilotclient/samples/blackmisc/samplesconcurrent.cpp
Klaus Basan f0db7ed660 refs #380, QConcurrent vs QThread sample and fix
* in same step fixed nullptr issue in worker (with no parent)
* Changed from QConccurennt::run to CWorker in core
2015-03-20 16:33:23 +01:00

104 lines
2.8 KiB
C++

/* Copyright (C) 2015
* swift Project Community / Contributors
*
* This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
* directory of this distribution and at http://www.swift-project.org/license.html. No part of Swift Project,
* including this file, may be copied, modified, propagated, or distributed except according to the terms
* contained in the LICENSE file.
*/
#include "samplesconcurrent.h"
#include "blackmisc/algorithm.h"
#include <QDebug>
#include <QCoreApplication>
#include <QtConcurrent/QtConcurrent>
#include <QString>
using namespace BlackMisc;
namespace BlackMiscTest
{
int CSamplesConcurrent::samples(const QString &type, QTextStream &out, QTextStream &in)
{
Q_UNUSED(in);
Q_UNUSED(type);
out << "Main thread id: " << QThread::currentThreadId() << endl;
CThreadOutput b1("b1");
b1.start();
CThreadOutput b2("b2");
b2.start();
CThreadOutput b3("b3");
b3.start();
QThread::msleep(10 * 1000);
b1.stop();
b2.stop();
b3.stop();
QThread::msleep(1 * 1000); // allow to stop
out << "Main thread id: " << QThread::currentThreadId() << endl;
CConcurrentOutput c1("c1");
QtConcurrent::run(&c1, &CConcurrentOutput::doWork);
CConcurrentOutput c2("c2");
QtConcurrent::run(&c2, &CConcurrentOutput::doWork);
CConcurrentOutput c3("c3");
QtConcurrent::run(&c3, &CConcurrentOutput::doWork);
QThread::msleep(10 * 1000);
c1.stop();
c2.stop();
// stop 2, but then wait and see whats happening
out << "stopped c1, c2" << endl;
QThread::msleep(5 * 1000);
out << "stopped c3" << endl;
c3.stop();
QThread::msleep(1 * 1000); // allow to stop
return 0;
}
CThreadOutput::CThreadOutput(const QString &name, QObject *parent) :
CContinuousWorker(parent, name)
{ }
void CThreadOutput::doWork()
{
QTextStream out(stdout);
while (m_run)
{
out << this->objectName() << " worker id: " << QThread::currentThreadId() << endl;
QThread::msleep(1000);
}
}
void CThreadOutput::stop()
{
m_run = false;
}
void CThreadOutput::initialize()
{
this->doWork();
}
CConcurrentOutput::CConcurrentOutput(const QString &name, QObject *parent) :
QObject(parent), m_name(name)
{ }
void CConcurrentOutput::stop()
{
m_run = false;
}
void CConcurrentOutput::doWork()
{
QTextStream out(stdout);
while (m_run)
{
out << m_name << " worker id: " << QThread::currentThreadId() << endl;
QThread::msleep(1000);
}
}
} // namespace