From owner-freebsd-current Tue Mar 10 01:33:51 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id BAA21120 for freebsd-current-outgoing; Tue, 10 Mar 1998 01:33:51 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from smtp03.primenet.com (smtp03.primenet.com [206.165.6.133]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id BAA21096 for ; Tue, 10 Mar 1998 01:33:46 -0800 (PST) (envelope-from tlambert@usr09.primenet.com) Received: (from daemon@localhost) by smtp03.primenet.com (8.8.8/8.8.8) id CAA11932; Tue, 10 Mar 1998 02:17:49 -0700 (MST) Received: from usr09.primenet.com(206.165.6.209) via SMTP by smtp03.primenet.com, id smtpd011920; Tue Mar 10 02:17:42 1998 Received: (from tlambert@localhost) by usr09.primenet.com (8.8.5/8.8.5) id CAA13575; Tue, 10 Mar 1998 02:17:40 -0700 (MST) From: Terry Lambert Message-Id: <199803100917.CAA13575@usr09.primenet.com> Subject: Re: vnode_pager: *** WARNING *** stale FS code in system To: mellon@pobox.com (Anatoly Vorobey) Date: Tue, 10 Mar 1998 09:17:40 +0000 (GMT) Cc: nate@mt.sri.com, current@FreeBSD.ORG In-Reply-To: <19980309194602.38788@techunix.technion.ac.il> from "Anatoly Vorobey" at Mar 9, 98 07:46:02 pm X-Mailer: ELM [version 2.4 PL25] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > So, does the stacking layer support multiple inheritance? :) Yes. > P.S. In fact, the VFS framework (more precisely, one of its > predecessors, Sun's vnode system) is mentioned in at least one > book on Java as an example to what pains these poor C programmers > must go in order to create OOP-like FS interface, and how easily > you would do that in Java ;) The Sun VFS framework is a bit more primitive than the BSD 4.4 implementation, even with all its current faults. That said, I saw an OO based OS demonstration by some people from the University of Kentucky on the "Choices" OS. I was impressed when they implemented ACL's in about ten minutes, using inheritance. Of course, they had done it before (Any sufficiently advanced technology is indistiguishable from a rigged demo ;-)). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message