Re: Hurd IPC

[Marcus Brinkmann]

On Tue, Oct 15, 2002 at 04:46:34PM +0200, Ludovic Courtès wrote:
> On Tue, Oct 15, 2002 at 10:45:45AM -0400, Neal H. Walfield wrote:
> > On L4, a handle will be unique to a server which means that the client
> > must store both the server's communication thread id and the handle
> > id.  On Mach, a handle would be task local--it is just a normal port
> > managed by Mach.
> 
> On L4, shouldn't the client compute a locally unique id for a given server
> handle id? On the client side, this would imply translation of the local id
> into the server's handle id. Doing so, the client code would still just see an
> integer, the same as what we have when using ports or file descriptors.

This computation could be as easy as "(server_id << server_id_base) | handle id"

Thanks,
Marcus

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Marcus Brinkmann              The Hurd http://www.gnu.org/software/hurd/
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