Need help debugging sp02.exe run on Strong APA scheduler

[Joel Sherrill]

On Wed, Sep 23, 2020 at 11:54 AM Richi Dubey <richidubey at gmail.com> wrote:

> Thanks for the advice.
>
> I feel something is going wrong when we're trying to delete a suspended
> task because maybe I'm not handling the suspension/deletion of tasks
> properly in my code. Do you think this might be true for my code
> <https://github.com/richidubey/rtems/blob/Release-Strong-APA/cpukit/score/src/schedulerstrongapa.c>
> ?
>

That's a specific scheduler action and combination of object states. It is
quite possible something is not processed correctly by your scheduler.
Deleting a suspended thread would not require any actions on the Ready set
of threads, for example.

--joel



>
> On Wed, Sep 23, 2020 at 12:41 AM Joel Sherrill <joel at rtems.org> wrote:
>
>> This isn't a proper solution but a debug technique. When stepping
>> and running result in different behavior, it is sometimes useful to
>> run to a specific point and look at data structures for anomalies.
>>
>> Since TA1 never prints, I wonder if something went wrong with the
>> data structures before INIT deletes itself at the bottom.
>>
>> --joel
>>
>>
>> On Tue, Sep 22, 2020 at 12:40 PM Richi Dubey <richidubey at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I've been trying to debug why sp02 keeps failing on Strong APA scheduler
>>> and it's hard for me to debug because there are different points at which
>>> the same program breaks on gdb even though this is a single processor test.
>>> I have attached the different error logs. In error.txt, we can see that the
>>> execution fails somewhere in _Context_Switch while it is not the case when
>>> I step inside in case II, and other random things like these keep
>>> happening. I'd appreciate it if you direct my thoughts.
>>>
>>> I'm testing the source over this
>>> <https://lists.rtems.org/pipermail/devel/2020-August/061661.html> and
>>> this
>>> <https://lists.rtems.org/pipermail/devel/2020-September/061832.html>
>>> patch.
>>>
>>> Thanks,
>>> Richi.
>>> _______________________________________________
>>> devel mailing list
>>> devel at rtems.org
>>> http://lists.rtems.org/mailman/listinfo/devel
>>
>>
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