Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!andrew.cmu.edu!<UNAUTHENTICATED>+
From: Richard.Draves@CS.CMU.EDU
Newsgroups: comp.os.mach
Subject: Re: Combinging UNIX-style and MACH-style messaging
Message-ID: <8a3jnn_00j8MMwIFUJ@cs.cmu.edu>
Date: 27 Mar 90 05:41:07 GMT
References: <39001@cornell.UUCP>
Distribution: comp
Organization: Carnegie Mellon, Pittsburgh, PA
Lines: 18
In-Reply-To: <39001@cornell.UUCP>

> Excerpts from netnews.comp.os.mach: 23-Mar-90 Combinging UNIX-style and
> M.. Ken Birman@gvax.cs.corne (1707)

> 1) When I call the UNIX "select" operation, how can I get
>    a file descriptor for a Mach port so that I can detect the
>    presense of a message on it?

You can't.  If you want to do both blocking selects and blocking message
operations, you need to use multiple threads.

> 2) ISIS will need to make a transition from UDP communication to
>    Mach communication in the following steps:

Your tasks need to make use of a third-party to help set up the send
rights.  The standard third-party is the netmsgserver, via the netname
name service.

Rich