Threads in Plugins

[Old Dog]

I have a thread running in my plugin. After Exiting GBPVR normally, the next time I invoke GBPVR it simply will not start. I have localized the problem to this thread, which BTW is waiting on an event.

I have tried alot of things to terminate the thread in the destructor for it's class to no avail.

Is anyone else using threads in their plugins? Anyone have any experience with this kind of problem?

Thanks in Advance,
David

[Hunter Sun]

On the Deactivate method of the plugin, have you tried running a thread abort?

- Scott

[Old Dog]

On the Deactivate method of the plugin, have you tried running a thread abort?

- Scott

My (mis?)understanding is that deactivate is when control returns to the main menu but the application is still running. If so, I don't want the tread aborted at this time, only when the apllication terminates.

Thanks,
David

[Old Dog]

I have a thread running in my plugin. After Exiting GBPVR normally, the next time I invoke GBPVR it simply will not start. I have localized the problem to this thread, which BTW is waiting on an event.

I have tried alot of things to terminate the thread in the destructor for it's class to no avail.

Is anyone else using threads in their plugins? Anyone have any experience with this kind of problem?

Thanks in Advance,
David

Solved the problem by creating an Application.OnExit event handler that terminates the thread.

[glensh]

Hi David,

Could you give the code you put in to solve this?
I put the following into my plugins constructor...

Application.ApplicationExit += new EventHandler(OnExit);

and then the following method...

protected void OnExit (object sender, System.EventArgs args) {
CommonGBPVRUtilities.StatusLog.LogMessage("Plugin.log","Application is exiting!");
}

But I didn't get a log entry, so I don't think it is working.

Question 2: Does your solution work on the MVP? ie: does the application exit event occur when the MVP is turned off?

Thanks in advance.

Glen

[Old Dog]

Code:

...
[SIZE="3"]
    WThread = new Thread(new ThreadStart(WaitThread));
    WThread.Start();
    Application.ApplicationExit += new EventHandler(this.OnExit);
}

//----------------------------------------------------------------------
// OnExit - Application exit event handler
//----------------------------------------------------------------------
private void OnExit(object sender, EventArgs e)
{
    Logger.Verbose("Appearance: Exit event.");
    TerminateThread = true;
    WThread.Join();
}

//----------------------------------------------------------------------
// WaitThread - Thread that reloads the application when signaled from
// any instance of GBPVR.exe
//----------------------------------------------------------------------
private void WaitThread()
{
    Thread.Sleep(2000);    // prevents restarting more than once.
    WThread.Priority = ThreadPriority.AboveNormal;
    while (!TerminateThread)
    {


[/SIZE]

where would this

Code:

CommonGBPVRUtilities.StatusLog.LogMessage(...

log a message?

[glensh]

CommonGBPVRUtilities.StatusLog.LogMessage("Plugin.log","Application is exiting!");

This logs to the gbpvr directory in a file based on your first parm.

Possibly the utilities logging services are already stopped by the time the application exit event is handled.

Thanks for the code snippet.

Glen