[Interest] The right way of using QProcess

[Nuno Santos]

Hi,

I’m calling the function below with a one second interval while my app is open. The functions executes the command “adb devices"

Is there any kind of limitation by the system by the number of calls? I think my system gets to a point where no more processes can be created: Chrome starts to hang, QtCreator isn’t able to do make, etc

static QString executeAdbCommand(QStringList arguments)
{
    QProcess p;

    //p.setReadChannel(QProcess::StandardError);

    #ifdef Q_OS_MAC
    p.start(QString("%1/adb").arg(QCoreApplication::applicationDirPath()), arguments);
    #endif

    #ifdef Q_OS_WIN
    p.start("adb.exe", arguments);
    #endif

    //qDebug() << "Executing adb" << arguments;

    if (!p.waitForStarted())
       return "";

    if (!p.waitForFinished())
       return "";

    QString output = p.readAll();

    return output;
}

Nuno

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