Can how I download a call stack when there is an error?

VI "call the string" print only one stack of calls from the VI which contains the string of appeal VI.

Since I use a Subvi, which manages errors and the chain of appeal VI cannot be located in the VI where an error occurs,

VI "call the string" isn't useful in a logging error VI.

In java, you have Throwable.printStackTrace () that prints the call stack.

Is there an equivalent of Throwable.printStackTrace () LabVIEW?

CITA wrote:

nathand / / there is no call chain in the cluster of error.

rolfk / / the problem is that the first element of the array is in the depths of the call chain.
Suppose I put "call the string" VI in D.vi
E.VI called D.vi (D<>
And the tree of VI is 'A '.<><><><>
If a VI was an error in A.i, VI "call the string" would return only 'D.vi' and "E.vi" in the returned array.
I want to see "A.i", 'B.vi', 'C.vi', 'D.vi' and "E.vi" in the table of call chain.

But it is impossible to place "call the string" VI at the lowest level (A.i in this case) for a large canvas of the screws.
A.I could be included at the next to last level later in time.

Well, you may need to rethink what you expect here. You want to have the same as structured exceptions management, but also that there is indeed patents on several of these implementations, LabVIEW works a little different since it is data flow. Basically what I do in LabVIEW, is to have a VI that is placed where an error occurs. It checks the error condition and if violations adds the actual call stack (called string - the number of levels the error checker uses) more than the additional error information in the error cluster. Basically, this is what in other languages is the throw statement. All consecutive screws have this cluster of error usually wired through and do nothing (except the close function that tries to close all resources in any case) if there is an error in. Then at the end of your transaction, usually in a higher level VI there is an error handler, which records the information, shows a dialog box or all that logical for an error in this regard. If your stack is determined at the point where the error occurs, but you don't have much code every time, you can write a Subvi, you can drop into the diagram to manage this for you and add the cluster of error information.

The cluster of error is not exactly the most ideal way to manage the structured exception handling, but it is a mechanism that has been introduced a long time ago and worked pretty well, or of less not pretty bad a lot of people were worried trying to find a more universal (and always easy to handle) MECHANISM.

Tags: NI Software

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