Hi all,
some more interesing measurements:
1) Even when I remove the printf() completely, the system freezes.
My realtimetask is then
static void realtimetask(void *arg)
{
system("ls -l");
rt_task_sleep(1000000000ULL);
}
2) When I replace the printf() by a gepid() the behaviour is the same.
3) Jan, your application using the rt_task_shadow behaves the very same (it
freezes)!
4) A getpid() directly after system does not help - however, a printf at this
position helps to
prevent the freeze.
But now, I found one very interesting thing:
When I rename my /lib/tls to /lib/tls.disabled, it works!!!!
It seems to be (once more) a ugly thread local storage stuff.
The ldd dependency of xeno_crash show libc and libpthread that are take from
/lib/tls/i686/cmov directory.
Perhaps that could give a hint!
Regards
Mathias
> Hello Philippe,
> >
> > > The important issue to check is the above one. Please try calling
> > > rt_task_delete(NULL), and in a second test, rt_task_suspend(NULL),
> > > instead of letting the thread routine return. TIA,
> > O.K, here are the results:
> > I have placed rt_task_delete() at all possible positions in
> realtimetask().
> > The system freezes when I place rt_task_delete() after the printf()
> statement.
> > At all other positions (after system(), after rt_task_sleep()) the system
> does not freeze.
> > I get the very same results when I use rt_task_suspend() instead of
> rt_task_delete().
> >
> > It means, that the printf() call causes the freeze.
>
> just to be sure.
>
> Could you try with other secondary domain calls (instead of printf() )
> : write() (open/close as I suggested before) or even getpid() ?
>
> (1) instead of the last code line (printf() after rt_task_sleep() ) ;
>
> (2) put it after system(). Does it still prevent a PC from hanging?
>
>
> --
> Best regards,
> Dmitry Adamushko
>
--
Mathias Koehrer
[EMAIL PROTECTED]
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