停止不在while循环中的C＃线程

Question

I've searched around to find the best way to terminate a non UI thread. What I found is that, in short, the thread is in a while loop and you simply set the while loop condition to false to make the thread exit the loop:

https://msdn.microsoft.com/en-us/library/7a2f3ay4(v=vs.80).aspx

Fine but my thread is not in a while loop. The thread is started and then its dispatcher is used. It's actually a thread in a C# dll. The dll itself is using a second C++ dll through a SWIG interface. Long story short, I need a dispatcher.

Now before going further, I would like to mention that everything works fine. But the only way I found to stop the dll thread is by calling Thread.Abort(). I would like to this in a more graceful way.

From the UI thread, that uses the C# dll, an instance of the dll class is created:

    public CSomethingDll()
    {
        // This is the dll class constructor.
        using (m_startEvent = new ManualResetEvent(false))
        {
            m_mainSdkThread = new Thread(DllThreadEntryPoint);
            m_mainSdkThread.Name = "DLL THREAD";
            m_mainSdkThread.Start(m_startEvent);

            m_startEvent.WaitOne();
        }
    }

    [STAThreadAttribute]
    public void DllThreadEntryPoint (object o)
    {
        m_dispatcher = System.Windows.Threading.Dispatcher.CurrentDispatcher;

        (o as ManualResetEvent).Set();

        System.Windows.Threading.Dispatcher.Run();

        // The dispatcher is now running and ready for calls to BeginInvoke().
    }

The dispatcher of the dll thread is now running. The UI thread can now initialize the dll by calling the InitializeA method of the dll:

    public void InitializeA()
    {
        m_dispatcher.BeginInvoke(EvInitialize);
    }

Now, when the UI thread is terminating, when the application is closing, the UI thread calls the FinalizeA method:

    public void FinalizeA()
    {
        m_dispatcher.BeginInvoke(EvFinalize);
    }

Inside the dll thread, stuff is done to terminate everything and release the resources. Everything works fine. But the only way I found to stop the dll thread is by calling Thread.Abort():

m_dispatcher.Thread.Abort();

Now, is there some trick to stop the dll thread through the Dispatcher? Some way to stop the dispatcher that will then terminate the associated thread?

Thanks!

Answer 1

How do you terminate your UI thread, do you properly exit your dispatcher?

You really need to call Dispatcher.ExitAllFrames so that the Run method exits.