From owner-freebsd-threads@FreeBSD.ORG  Fri Jul 11 07:08:57 2003
Return-Path: <owner-freebsd-threads@FreeBSD.ORG>
Delivered-To: freebsd-threads@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5552237B401
	for <freebsd-threads@freebsd.org>;
	Fri, 11 Jul 2003 07:08:57 -0700 (PDT)
Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 8C52E43FAF
	for <freebsd-threads@freebsd.org>;
	Fri, 11 Jul 2003 07:08:56 -0700 (PDT)
	(envelope-from gallatin@cs.duke.edu)
Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu
	[152.3.145.30])
	by duke.cs.duke.edu (8.12.9/8.12.9) with ESMTP id h6BE8twV020170
	(version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO)
	for <freebsd-threads@freebsd.org>;
	Fri, 11 Jul 2003 10:08:55 -0400 (EDT)
Received: (from gallatin@localhost)
	by grasshopper.cs.duke.edu (8.11.6/8.9.1) id h6BE8ol31689;
	Fri, 11 Jul 2003 10:08:50 -0400 (EDT)
	(envelope-from gallatin@cs.duke.edu)
From: Andrew Gallatin <gallatin@cs.duke.edu>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <16142.50418.692392.183187@grasshopper.cs.duke.edu>
Date: Fri, 11 Jul 2003 10:08:50 -0400 (EDT)
To: freebsd-threads@freebsd.org
X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid
Subject: dumb KSE question
X-BeenThere: freebsd-threads@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Threading on FreeBSD <freebsd-threads.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>,
	<mailto:freebsd-threads-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-threads>
List-Post: <mailto:freebsd-threads@freebsd.org>
List-Help: <mailto:freebsd-threads-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-threads>,
	<mailto:freebsd-threads-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 11 Jul 2003 14:08:57 -0000


We have a driver which will block a thread in a cv_timewait_sig()
after it calls into driver via an ioctl.  Under libc_r, this will
naturally block the entire process until the driver wakes it up via a
cv_signal().

I assume that with KSE, the UTS will schedule another thread to run as
a result of calling the cv_timewait_sig()?  Ie, it won't block the
entire process?

Thanks,

Drew