[Info-vax] DECThreads hard landing

[Arne Vajhøj]

On 5/12/2021 4:26 AM, Volker Halle wrote:
> is this what happened ?
> 
> You ran your Python program
> It seemed to hang, so you issued a CTRL-C
> Nothing happened
> Then you typed CTRL-Y and got to the DCL prompt
> Then you invoked another image ($ DIR), causing the Python image to be terminated forcefully and the DECthreads bugcheck info to be printed and an image dump to be generated - please don't abort the image dump and save the python.dmp file for later analysis.

Yes.

> Is this reproducable ?

I don't know.

There was a network connectivity problem between the VMS system and the
PC that Python tried to connect to (stomp module trying to connect to
ActiveMQ).

And the Python program was not complete.

I fixed the connectivity issue and completed the program.

It works fine now.

I did not post to get a fix but because it was a rather
surprising outcome.

> If you can, please report this problem to VSI support. I can't tell, whether this is an OpenVMS DECthreads problem, a Python problem or a problem with your Python program, but maybe VSI can tell.

This is way outside my area of expertise.

But I would not expect something like this to happen for a unprivileged
program neither good code nor bad code.

Arne