How can I determine which (sub) vi is currently executing?

[mark-san]

I have a main vi which incorporates many sub-vi's. On rare occasions execution will 'hang-up' and it would be nice to know which vi is stuck. Is there any easy way to determine which vi is currently executing (I don't want to use the light-bulb/execution hi-lighting feature because of timing considerations).

Thanks!

[LarsRoe]

As a VI is running, you can see the run arrow look like it's running. If you are using reentrant VIs, this won't work because there are multiple instances of that VI, which may be run independently.

[mark-san]

Thanks LarsRoe...I guess I was aware of the run arrow, but was hoping there was another/easier way. I have quite a few vi's and it will be a pain to have to look at all of them (potentially). However, if that's the only way, then so be it.

[LarsRoe]

You can also do it programmatically with LabVIEW. "Exec.State" is a VI property that will tell you if a given VI is running.

[mark-san]

This sounds more like what I was looking for...I'll investigate to see how it works.

Presumably I could have the main vi monitor the Exec.State of all (sub) vi's and display an LED panel indicating which one is executing?

[BJD1613]

To add to this when in execution highlighting there is a green arrow on what subvi is running.