qt5base-lts/examples/tutorials/threads/movedobject/thread.cpp
Friedemann Kleint 5e6605f7b0 Fix building of examples.
Change-Id: Iebb56c81fd13deaa82d8883e3f1529f1a78ebea8
Reviewed-on: http://codereview.qt.nokia.com/3603
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>
2011-08-25 15:54:16 +02:00

101 lines
3.7 KiB
C++

/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the examples of the Qt Toolkit.
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#include "thread.h"
/*
* QThread derived class with additional capability to move a QObject to the
* new thread, to stop the thread and move the QObject back to the thread where
*it came from.
*/
Thread::Thread( QObject *parent)
: QThread (parent)
{
//we need a class that receives signals from other threads and emits a signal in response
shutDownHelper=new QSignalMapper;
shutDownHelper->setMapping(this,0);
connect(this, SIGNAL(started()), this, SLOT(setReadyStatus() ), Qt::DirectConnection);
connect(this, SIGNAL(aboutToStop()), shutDownHelper, SLOT(map()) );
}
//------------------------------------------------------
Thread::~Thread()
{
delete shutDownHelper;
}
//------------------------------------------------------
// starts thread, moves worker to this thread and blocks
void Thread::launchWorker(QObject *worker)
{
worker = worker;
start();
worker->moveToThread(this);
shutDownHelper->moveToThread(this);
connect(shutDownHelper, SIGNAL(mapped(int) ), this, SLOT(stopExecutor()), Qt::DirectConnection );
mutex.lock();
waitCondition.wait(&mutex);
}
//------------------------------------------------------
// puts a command to stop processing in the event queue of worker thread
void Thread::stop()
{
emit aboutToStop();
}
//------------------------------------------------------
// methods above this line should be called in gui thread context
// methods below this line are private and will be run in secondary thread context
//------------------------------------------------------
void Thread::stopExecutor() //secondary thread context
{
exit();
}
//------------------------------------------------------
void Thread::setReadyStatus()
{
waitCondition.wakeAll();
}