RE: [Xen-users] Linux-Windows data sharing in Xen

["ITZIAR BALENCIAGA" <ibalenciaga@xxxxxxxx>]

The counter is continuously changing and I refresh the window where I show the value every 500 ms. Is it too often for xenstore?


-----Mensaje original-----
De: James Harper [mailto:james.harper@xxxxxxxxxxxxxxxx]
Enviado el: lun 01/06/2009 14:08
Para: ITZIAR BALENCIAGA; xen-users@xxxxxxxxxxxxxxxxxxx
Asunto: RE: [Xen-users] Linux-Windows data sharing in Xen

>
> Now I'll try to explain my situation a little bit more. I use Xen
3.3.1 and
> have Ubuntu 8.10 as my dom0 and Windows XP as my domU. I have two
processes
> where one of them writes into a counter and the other one visualizes
its
> value. I've done it in windows with shared memory (using
CreateFileMapping)
> and now I'd like to move it to my new system. My intention is putting
the
> process that writes into the counter in Linux and the other one in
Windows. In
> the post I've previously mentioned he says that he does something
similar
> using the functions xc_domain_translate_gpfn_list and
xc_map_foreign_batch.
> I've tried to understand what these functions do but I had no success
and
> don't know how to use them. Does anybody know anything about these
functions?
> Has anybody done anything similar and can show me the code in order to
try to
> understand it better? If not, where could I find an example doing
something
> similar?
>

How often are your counters being updated? If it's not too often then
xenstore could be used for this.

James

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