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Date:      Mon, 1 Nov 1999 16:04:28 -0500 (EST)
From:      Peter Dufault <dufault@hda.com>
To:        eischen@vigrid.com (Daniel Eischen)
Cc:        arch@freebsd.org
Subject:   Re: Threads models and FreeBSD.
Message-ID:  <199911012104.QAA19039@hda.hda.com>
In-Reply-To: <Pine.SUN.3.91.991101153041.20619A-100000@pcnet1.pcnet.com> from Daniel Eischen at "Nov 1, 99 03:36:34 pm"

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(I asked if the POSIX spec permitted private per-thread stack...)

> If each threads stack was private, how would you pass objects allocated
> off the stack to other threads for processing?

You wouldn't, at least not with some flavor of mmap publishing and
attaching that would probably open up your whole stack.

I have no problem with that, especially in the kernel.  I understand
current practice may rule it out in a user library.

Peter

-- 
Peter Dufault (dufault@hda.com)   Realtime development, Machine control,
HD Associates, Inc.               Safety critical systems, Agency approval




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