RE: [U2] Runtime Stack Overflow [uv]

[Norman, David (SAAS)]

Thanks to Brian, Sara, Mark, Charles and Baker for your responses.
I hope Brian and Charles have hit the nail on the head. I did manage to
create an infinitely recursive subroutine call, exactly as Charles said,
by reusing code from a different program with slightly different
structure (GOTO instead of RETURN).
This phantom has now been running for almost 20 hours, and I have hopes
it will run until I tell it to stop.
Now I've just got to clean up my XML processing, so that every
PrepareXML is matched with a ReleaseXML, and every OpenXMLData has a
corresponding CloseXMLData - if I found a malformed XML input (which I
haven't so far) I was skipping the ReleaseXML or CloseXMLData.

Thanks everyone and Happy Easter !!

David Norman
Senior Software Engineer
SA Ambulance Service
Box 3, GPO
Adelaide, South Australia 5001
*+61 8 8274 0384
* fax +61 8 8271 4844
* [EMAIL PROTECTED]
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RE: [U2] Runtime Stack Overflow [uv]

[Baker Hughes]

I'm joining the fishing expedition a bit late so I guess I'll cast even
farther from the boat than the others ...

In your Select statements, do you utilize any I-type DICTs which have
Sub calls or User exits which open files?

Plus, in any opens for a phantom, I'm sure you are opening to a named
Common, with an INIT flag (which you check and only open the file IF
NOT(INIT.FLAG) THEN ... )

[ the recursive call is interesting too - we do a bit of that - this is
taking code reuse to an extreme - what a headache to test ]

HTH,
-Baker


 My VAR advises that this error is associated with too many files, or
nested Executes. 

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RE: [U2] Runtime Stack Overflow [uv]

[Stevenson, Charles]

And look for GOTO where RETURN should have been used to exit a gosub,
thus goofing up the return stack, which grows and grows and grows.

Brian's SYSTEM(9001) & PORT.STATUS LAYER.STACK are good debug
suggestions.
I haven't seen this error associated with too many files being open, but
PORT.STATUS also has a FILEMAP & MFILE.HIST options. 

Note to those unfamiliar with PORT.STATUS: All 3 of these options
only(?) work when you limit the report via the PID keyword.  And you
might need to run it in the uv account or copy keywords into your
working account for PORT.STATUS to work in all its glory.
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RE: [U2] Runtime Stack Overflow [uv]

[Hennessey, Mark F.]

 My VAR advises that this error is associated
with too many files, or nested Executes. 


Would using PERFORM be better? EXECUTE creates a new environment while PERFORM 
commands are executed in the same environment as the Basic program.
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[U2] Runtime Stack Overflow [uv]

[Sara Burns]

I have seen this where a program repeatedly called a subroutine which
opened the same file.  Eventually the process grew too big and was
unable to open one of the main files.  The error message seemed wrong as
the file had been opened in the last pass.

This may give you some areas to check.

Sara Burns

Sara Burns (SEB)


IS Development Manager

Public Trust
Phone: +64 (04) 978 4534 (DDI)

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RE: [U2] Runtime Stack Overflow [uv]

[brian]

Hi

I've only seen this with a recursive subroutine that was a bit too - um - 
recursive (and never found its way back).

Check for some logic path that would cause it - or part of it -to run itself. 
Use PORT.STATUS to keep track of where it is - see the LAYER.STACK option -  or 
have it write System(9001) away at intervals, though that will only show the 
BASIC stack not any nested executes.

Brian


UV 10.0.16 (Information) HP-UX 11.
I am developing a new phantom that will run 24x7 until told to stop. I
have many phantoms running this way.
The new phantom won't run for more than about 12 hours no matter what
time started, when it aborts with a Runtime Stack Overflow, pointing to
a quite innocuous line. My VAR advises that this error is associated
with too many files, or nested Executes. I can't see what's wrong in my
program - it does have Executes for selects etc but I can't see any
problems.
Anyone have any ideas what I should be looking for ? How accurate is the
line number in the error message ?

Thanks all,


David Norman
Senior Software Engineer
SA Ambulance Service
Box 3, GPO
Adelaide, South Australia 5001
*+61 8 8274 0384
* fax +61 8 8271 4844
* [EMAIL PROTECTED]
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[U2] Runtime Stack Overflow [uv]

[Norman, David \(SAAS\)]

UV 10.0.16 (Information) HP-UX 11.
I am developing a new phantom that will run 24x7 until told to stop. I
have many phantoms running this way.
The new phantom won't run for more than about 12 hours no matter what
time started, when it aborts with a Runtime Stack Overflow, pointing to
a quite innocuous line. My VAR advises that this error is associated
with too many files, or nested Executes. I can't see what's wrong in my
program - it does have Executes for selects etc but I can't see any
problems.
Anyone have any ideas what I should be looking for ? How accurate is the
line number in the error message ?

Thanks all,


David Norman
Senior Software Engineer
SA Ambulance Service
Box 3, GPO
Adelaide, South Australia 5001
*+61 8 8274 0384
* fax +61 8 8271 4844
* [EMAIL PROTECTED]
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