Fail when using Phonon after restarting application programatically.

Hi all,
I have a problem with using phonon after restarting application.
I have created singleton pattern class which holds voice messages for application. This class inherits from QObject to allow connection of signals and slots. Everything works fine in normal operation. However when i restart the application programatically with use of the following technique:

Code:

---

int main(int argc, char *argv[])
{
    int currentExitCode = 0;
 
    do{
        QApplication a(argc, argv);
        qApp->setQuitOnLastWindowClosed(true);
 
        SoundPlayer::instance()->loadSounds();
        bool success;
        MainWindow w(success);
        if(success)
            currentExitCode=a.exec();
        else
            qApp->exit();
 
    }while( currentExitCode == MainWindow::EXIT_CODE_REBOOT );
 
    return currentExitCode;
}
 
(..)
 
void SoundPlayer::loadSounds()
{
    unloadSounds();
 
    QString dirfilename = "sound.mp3";
    if(QFile::exists(dirfilename))
    {   
        qDebug()<<Phonon::phononVersion();
 
        sounds.insert(estSound1 ,Phonon::createPlayer(Phonon::MusicCategory,Phonon::MediaSource(dirfilename)));
        connect(sounds[estSound1],SIGNAL(finished()),this, SLOT(rewindPlayer()));
    }
}

---

When the application restarts and the execution reaches loadSounds(), the error arises at:

Code:

---

Phonon::createPlayer(Phonon::MusicCategory,Phonon::MediaSource(dirfilename))

---

with message:

Quote:

---

Fatal Error: Accessed global static 'Phonon::FactoryPrivate *globalFactory()' after destruction. Defined at ../3rdparty/phonon/phonon/factory.cpp:84

---

the same error appears when i try to execute any of:

Code:

---

Phonon::AudioOutput *audioOutput = new Phonon::AudioOutput();
Phonon::MediaObject *mo = new Phonon::MediaObject(this);

---

after restart.

Do you have any idea what can be wrong?
Best regards,
Konrad

As a workaround i have changed the way i do programatical restart. I have to use process respawn to keep phonon alive:

Code:

---

// Restart Application
void myApp::Restart(bool Abort)
{
    // Spawn a new instance of myApplication:
    QProcess proc;
#ifdef Q_OS_WIN
    proc.startDetached(this->applicationFilePath());
#endif    
 
#ifdef Q_OS_MAC
    // In Mac OS the full path of aplication binary is:
    //    <base-path>/myApp.app/Contents/MacOS/myApp
    QStringList args;
    args << (this->applicationDirPath() + "/../../../myApp.app");
    proc.startDetached("open", args);
#endif
 
    // Terminate current instance:
    if (Abort) // Abort Application process (exit immediattely)
        ::exit(0);
    else
        this->exit(0); // Exit gracefully by terminating the myApp instance
}

---

Maybe the phonon failure is a QT bug or i am missing some object lifetime nuance. If someone has some thoughts, i will appreciate it.

Best regards,