From owner-freebsd-chat Fri Feb 20 01:22:40 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id BAA16557 for freebsd-chat-outgoing; Fri, 20 Feb 1998 01:22:40 -0800 (PST) (envelope-from owner-freebsd-chat@FreeBSD.ORG) Received: from symbionics.co.uk (symsun3.symbionics.co.uk [194.32.100.60]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id BAA16545 for ; Fri, 20 Feb 1998 01:22:28 -0800 (PST) (envelope-from dmlb@symbionics.co.uk) Received: from by symbionics.co.uk (4.1/SMI-4.1) id AB13629; Fri, 20 Feb 98 09:22:15 GMT Received: by symnt3.symbionics.co.uk with SMTP (Microsoft Exchange Server Internet Mail Connector Version 4.0.995.52) id <01BD3DE0.E6295900@symnt3.symbionics.co.uk>; Fri, 20 Feb 1998 09:21:17 -0000 Message-Id: From: Duncan Barclay To: "'dg@root.com'" Cc: "'chat@freebsd.org'" Subject: RE: pre-emptive multitasking patent! Date: Fri, 20 Feb 1998 09:21:16 -0000 X-Mailer: Microsoft Exchange Server Internet Mail Connector Version 4.0.995.52 Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: owner-freebsd-chat@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > > Actually, that article mentions pre-emptive multithreading, which FreeBSD >doesn't currently support in the kernel. This might be an issue if we go >beyond the single giant lock model in SMP, however. I haven't read the >patent, but it shouldn't be difficult to prove prior art. > > -DG > >David Greenman > I had a look at the patent a couple of days ago. It's a bit odd in that he seems to be shooting himself in the foot re-prior art by citing papers back to 1972 by CAR Hoare and a few bits in the 70's. > >Duncan > >PS. if the formatting is crap sorry; at work with M$ Exchange. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-chat" in the body of the message