This is the mail archive of the
ecos-discuss@sources.redhat.com
mailing list for the eCos project.
Re: round-robin
- From: Jonathan Larmour <jlarmour at redhat dot com>
- To: Jing Luo <Jing at vicom dot com>
- Cc: 'Ravi Kumar B S' <ravi_kumar at mindtree dot com>,ecos-discuss at sources dot redhat dot com
- Date: Fri, 25 Jan 2002 22:00:27 +0000
- Subject: Re: [ECOS] round-robin
- Organization: Red Hat UK Ltd.
- References: <B26EACBBAF91D411BD8500508BF7D695051CDD@earth.vicom.com>
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
--
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine