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Re: round-robin


Jing Luo wrote:
> 
> Hi Ravi,
> Thanks for your reply.
> 
> I am working on Intel 80200 based on Xscale Microarchitecture.
> Does someone have experience to port eCos on this microprocessor?
> I am trying to evaluate eCos to see if it fits our requirement.
> I have some more questions about eCos on Xscale, wish someone can give me a
> hand.
> 
> 1. Does eCos have task limitation on Xscale in Multitasking?

eCos is multi-threaded, not multi-tasking. A lot of efficient RTOS's are
like that to avoid the overhead of task switching.

As for the number of threads, there isn't any real limit using the default
multi-level queue scheduler.

> 2. Pend on the logical AND/OR of event flags is available?

Yes eCos has a "flags" synchronization object, an idea based on uItron (and
used by the uItron compatibility layer).
 
> 3. How eCos dealing with memory partition services?

What do you mean?

Jifl
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