Re: [Xenomai-help] troubles deleting tasks

[Jan Kiszka <jan.kiszka@domain.hid>]

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Philipp Keller wrote:
> Thank you Jan.
> 
> As to your answer:
> That must be a different issue. Check /proc/xenomai/rtdm/open_fildes for
> any leftover (CAN) file descriptor. Note that rt_dev_close() can fail if
> the descriptor is busy. And such thing can happen if you simply kill the
> task that currently blocks on a CAN device e.g.
> 
> The correct ordering is therefore: close the sockets, catch the failure
> in the blocking threads, and make them self-terminate. Granted, note the
> most comfortable situation, but I'm sure we can improve it in the future
> (e.g. via auto-cleanup also for RTDM file descriptors).
> 
> I am actually doing that quite defensively I think, as you see in the
> code snippet:
[...]

That code looks sane (for UP systems), and you are dumping all errors so
that I can assume a non-closed socket would have been detected.

So we now need more information on your precise issues, which are still
two as I see it: rt_task_delete(&main) (actually a non-issue as I
explained) and the failing re-opening of the CAN device.

What error codes do you get? Can you derive a simple demo program that
exposes the error and can be analysed by us?

Jan


PS: Yet another lacking reply-to-all...


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