Re: Multithreading question

Der Herr Hofrat <[email protected]>
Newsgroups gmane.linux.real-time.rtlinux.general
Message-ID <[email protected]>
> Sorry,
> now that im thinking about it more, i think my question was more
> directed towards time slicing.  Ive written multi threaded programs
> before, but I wasnt quite sure if RTLinux time sliced the same way,
> Ive read up some more on threads and RTLinux and from what I gather It
> would be quicker to multithread my program since thread creation is
> less overhead then processes in general.  I think I was rushing into
> the question, what I have is a real time robotics module that was
> written without the general philosophy of rtlinux, being, anything
> that can be done non real time, should not be done real time
> (something to that effect), so Im thinking now that perhaps it would
> be more efficient to spawn threads for movement, vision and sensing. 
> My next question is , can the sigaction be used with the free rtlinux
> or just with pro?
>
sigaction is fully supported by the signals extension that the OCERA
people (University of Valencia) added -> examples/signals/pending/pending.c

If you where refering to rtlinux_sigaction calls for user-space signal/interrupt handling, this is actually still supported but has benn causing problems in 
the latest version - basically because it is not realy a very good solution, and it has not shown to be that usable for hard-realtime, guess its more or less
unmaintained at this point. 

hofrat 
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