Thread acting as a timer issue

General
1

Hi folks.

I have run into an issue that is making me frustrated.

I’m running Xojo 2025R2 on mac Sonoma.

I have a thread that will update on a window a label, so people can see the program is running, even if it isn’t showing anything.

here is the code for threadForRunningTime.Run

static runTimerValue As Integer

While app.runningTime = TRUE

runTimerValue = runTimerValue + 1

Me.AddUserInterfaceUpdate("timeCounter":runTimerValue)

Thread.SleepCurrent(1000)

Wend

And in my threadForRunningTime.UserInterfaceUpdate:

Var seconds As Integer

If data.LastIndex >= 0 Then

Var arg As Dictionary = data(data.LastIndex)

If arg.HasKey("timeCounter") Then
seconds = arg.Value("timeCounter").IntegerValue
labelProgramRunTime.Text = seconds.ToString
End If

End If

The issue I have is that instead of getting 1..2..3.. it screams up to tens of thousands. And just stops.

Or locks up my program and xojo.

If I remove the Me.AddUserInterface… it seems to act normally according to my log file.

7:12:19 PM : There are 45 total rows
7:12:21 PM : ******** MATCH FOUND ********
: I = 4 J = 6
: ******** MATCH FOUND ********
: I = 4 J = 18
: ******** MATCH FOUND ********
: I = 4 J = 20
7:12:22 PM : ******** MATCH FOUND ********
: I = 6 J = 18
: ******** MATCH FOUND ********
: I = 6 J = 20
7:12:23 PM : ******** MATCH FOUND ********
: I = 9 J = 16
: ******** MATCH FOUND ********
: I = 9 J = 19
: ******** MATCH FOUND ********
: I = 9 J = 23
7:12:24 PM : ******** MATCH FOUND ********
: I = 11 J = 12
7:12:25 PM : ******** MATCH FOUND ********
: I = 13 J = 37
: ******** MATCH FOUND ********
: I = 14 J = 22
7:12:26 PM : ******** MATCH FOUND ********
: I = 15 J = 43
: ******** MATCH FOUND ********
: I = 16 J = 19
: ******** MATCH FOUND ********
: I = 16 J = 23
: ******** MATCH FOUND ********
: I = 17 J = 21
: ******** MATCH FOUND ********
: I = 18 J = 20
7:12:27 PM : ******** MATCH FOUND ********
: I = 19 J = 23
7:12:28 PM : ******** MATCH FOUND ********
: I = 24 J = 31
7:12:29 PM : ******** MATCH FOUND ********
: I = 26 J = 27
: ******** MATCH FOUND ********
: I = 28 J = 33
7:12:32 PM : Done and Dusted
: ABOUT TO STOP RUNNING TIME
: RUNNING TIME IS NOW: False
7:1

Any ideas?

Regards

2

If the thread isn’t doing anything other than acting as a timer, just use a timer.

3

Hi Clifford.

Thank you for the response.

The reason I am using a thread as a timer is I have the program doing processor heavy work. If I try to do it with a timer, my program doesn’t update until after the work has been completed.

Regards

4

AddUserInterfaceUpdate uses a Timer internally.

Have you tried using Thread.YieldToNext() instead of Thead.SleepCurrent(1000)?

5

Are you using preemptive threads?

6

So is the “processor heavy work” going on in the main thread? This sounds backwards to me.

7

Thanks Andrew.

I’m getting so many good hints.

Thank you.

I will try and advise.

Regards

8

Yes, Eric.

Thanks for the response.

Regards