How to determine the position in code after pause/abort

Hi there.
I've been searching for this for quite a while now, but I didn't find a solution, although I might just have looked in the wrong direction.
Problem is: I'm trying to find a way to see where my program was (i.e. which part of the code it was execution) the moment I click on pause or abort. (Like the "pause" button present in most modern IDEs, when pressed, it halts the tread and jumps to the code-line or ASM-instruction the CPU was executing).
The reason: I'm using LabView to control a few instruments to do some measurements on OPVCs. During long measurements involving multiple parameter-sweeps and hence numerous reconfigurations of both function generators and scopes, the program sometimes stops, or better "stalls".
That is, the front panel's still responsive, but the measurement stops. I don't know whether the problem is related to my program or the scope (it's a LeCroy 434 Wavesurfer) or the FG (a Tabor series) - but I cannot find out either because I don't know what the program did last. FYI: when watching the program's execution using the Execution Highlighting tool, the error doesn't show up, so I guess it's some sort of timing issue.
I'm currently installing the Execution Trace toolkit in the hope it will help, but still, any help would be great!
Thanks in advance
Alex

AlexHofi wrote:
LV_Pro wrote:
Do you have any other means to stop your program currently?
Yes, in theory... in the last few minutes I reviewed some code I wrote months ago when starting with the development and saw some possible dead-locks with the UI. I have two "Stop"-Buttons, one that stops the measurement and one that exits the wohle program, the latter via an event, the first get's polled in the measurement loop via reference. I read elsewhere that this might not be the best way of doing it, as accessing the UI outside the main event loop might cause some problems.
I've got some spare lab-time today and will look into this again, unfortunately I cann't test the OutputDebugString-Thingy on my development machine as it's on linux.
Anyway, it's quite exciting that I finally found a board where peopple really try to helpt, even if the questions ask might not be as constructive as theay could/should be. Thank you very much for that!
Generally it is best to keep UI elements out of your processing code. Not only will a property node force execution to the UI thread it also tightly couples your UI and processing tasks. The prefered method is to use some type of messaging to the processing tasks. This can be implemented using queues, notifiers or user events. Your processing tasks now have a defined interface for interacting with them which makes reuse of the code easier. It is also more maintainable since you can completely change the UI without requiring a change to the processing code.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

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