Lionel Perrin wrote:
>
> > I can confirm that a few fixes in v2.1 were missing, so trunk works
> > correctly, didn't you forget to rebuild the kernel when building trunk ?
> > Attached is a patch to v2.1 that contain the fixes backported from
> > trunk. Please try this patch and tell me if this works for you.
> >
> In fact, I've downloaded the last version of trunk before your mail and
> the patch. You're right that works pretty good with this version... :)
>
> Unfortunately, it seem's that we can't share between a real time process
> and a non real one ?
Sharing memory should work, could you explain what happens ? Note that
you may use Linux regular shared memory services in the real-time
process by calling __real_shm_open instead of shm_open.
> I got one task which need to be real time in order to acquire datas, and
> another one that plot this datas on screen.
> I'd like to give user the choice to launch (or not) the second process,
> if he wish (or not) to watch the acquired datas. I'm figure out that
> making this second process a xenomai thread with a low priority would
> solve my problem but i'd rather prefered a standard linux process...
Using Xenomai thread with a low priority would allow you to share
synchronization objects between the real-time and non real-time
activites. You may also create non real-time threads in a
real-time process by calling __real_pthread_create instead of
pthread_create.
--
Gilles Chanteperdrix.
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