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#include <QtGui> 
#include "myqtapp.h"

myQtApp::myQtApp(QWidget *parent)
{
	setupUi(this); // this sets up GUI

	// signals/slots mechanism in action
	connect( pushButton_lmain, SIGNAL( clicked() ), this, SLOT( launch_in_main() ) ); 
	connect( pushButton_lnew, SIGNAL( clicked() ), this, SLOT( launch_in_new() ) ); 

}


void myQtApp::launch_in_main()
{
	qDebug() << "Executing in main thread, GUI is now blocked";
		
	for(int i=0;i<10;i++)
	{
		qDebug() << "Time to wait: " << 10-i;
		int t=1;

		// some OS specific stuff
		// mingw (3.4.2) sleep on windows is called _sleep and uses microseconds
		#ifdef Q_OS_WIN32
		t = t * 1000;
		_sleep(t);
		#else
		sleep(t);
		#endif

	}

	qDebug() << "Now you can operate with GUI";
}


void myQtApp::launch_in_new()
{
	// create new thread (on heap) and start it
	thread = new MyThread(this);
	thread->start(); // after this, thread's run() method starts 

}

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#include "mythread.h"
#include <QWriteLocker>

MyThread::MyThread(QObject *parent)
: QThread(parent)
{
}

void MyThread::run()
{
       //lock.lockForWrite();
        QWriteLocker locker(&lock);


	qDebug() << "Executing in new independant thread, GUI is NOT blocked";
		
	for(int i=0;i<10;i++)
	{
		qDebug() << "Time: " << 10-i;	

		int t=1;

		// some OS specific stuff
		// mingw (3.4.2) sleep on windows is called _sleep and uses microseconds
		#ifdef Q_OS_WIN32
		t = t * 1000;
		_sleep(t);
		#else
		sleep(t);
		#endif

	}
        //lock.unlock();
	
	qDebug() << "Execution done";
	
	exec();
}

Code: Alles auswählen

#ifndef MYTHREAD_H
#define MYTHREAD_H

#include <QtGui>

class MyThread : public QThread
{
	Q_OBJECT

public:
	MyThread(QObject *parent);
	void run(); // this is virtual method, we must implement it in our subclass of QThread


private:
        QReadWriteLock lock;

};


#endif

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void MyThread::start_me(QReadWriteLock *lock)
{
...
QReadWriteLock *lock_alias = lock;
...
}

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lock_alias = lock

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    lock_alias->lockForRead();
    lock_alias->lockForWrite();
    //mach was...
    lock_alias->unlock();