Real Time threads

Hi there,

 quick questions: how is Haiku supposed to behave with Real Time threads?
 Do we have to do our best, or we have to guarantee what they ask if we accept
 to scheduler them? Or return a message, not a error, if we can't
 guarantee what they ask in order to prevent starvation for other threads.

 For example, let's say we have a thread of a 3D shooting game that ask
 to be schedule periodically
 in order to render images, and another thread that ask be run
 periodically to reproduce the sounds of the game.
 And all this are real time threads, or _happen_to_be_ real time threads(
 say we return 120 with suggest_thread_priority).
 How should we cope with that? I guess our primary concern is to avoid
 starvation of the other threads anyway right?
 But on the other hand, if we accept a thread, we have to guarantee
 what they ask. Should we provide some functions
 about periodic task like this? If so, we should adopt some kind of
 hard real time scheduler for this kind of thread
 in order to guarantee what they ask, but also we have to make sure we
 don't create starvation for other backgrounds, low priority
 threads.


Regards,
-- 
Salvatore Benedetto (a.k.a. emitrax)
Student of Computer Engineer
University of Pisa
www.haiku-os.it

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