Technique to locate VI which is 'suspended' / waiting for debugging. Pause button - does not work.

During development, I have experience at the time that the high-vi simply "blockages"The debug break button does not break in the program - it turns red but nothing happens.

I can stop with 'Button give up', but then I see not how vi was stuck in a wait state - this information is lost.

Is there a way to determine 'the State' s sub - VI in a running application (during development).

as a list:

A.I: running

B.VI: IO queue, in queue or similar

C.VI: finished

This would help locate the problem.

Some clever stuff?

I looked on the forum I thought that this was discussed previously, but I found this thread:

http://forums.NI.com/T5/LabVIEW/how-to-find-which-sub-VI-is-running-in-highlight-execution-mode/m-p/...

If your problem is easily reproducible, you can use the option 'Retain the values of thread' to see what happens and when (the "last updated" timestamp is saved and you can read it with a probe).  In this way, you can quickly follow the data flow and see where your program hangs.

Otherwise, you can dig into your subVIs and watch the execution of each arrow.  Search in the help file "VI-toolbar buttons" and look at the top of page three icons.  An icon is actually absent from this list, and it's another arrow, slightly different performance, which indicates that the VI is part of a running application, but is not running.  By finding that VI is in fact running vs. just waiting to be called, you can find out where your problem is.

Tags: NI Software

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