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Re: Hurd IPC

From: Neal H. Walfield
Subject: Re: Hurd IPC
Date: 15 Oct 2002 10:45:45 -0400
User-agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.2

> There's actually one point that's still not very clear to me about the IPC
> model you described. You said the client would *only* keep the handle. Now, if
> the client does an open on two different servers and both of them return the
> same handle (the same integer), how can the client differentiate between them
> in further communication?

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.

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