From owner-freebsd-hackers@FreeBSD.ORG  Sat Dec 15 11:11:56 2007
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 7BAD016A469
	for <freebsd-hackers@freebsd.org>; Sat, 15 Dec 2007 11:11:56 +0000 (UTC)
	(envelope-from joerg@britannica.bec.de)
Received: from www.pkgsrc-box.org (www.ostsee-abc.de [62.206.222.50])
	by mx1.freebsd.org (Postfix) with ESMTP id 3B9F213C457
	for <freebsd-hackers@freebsd.org>; Sat, 15 Dec 2007 11:11:56 +0000 (UTC)
	(envelope-from joerg@britannica.bec.de)
Received: from britannica.bec.de (www.pkgsrc-box.org [127.0.0.1])
	by www.pkgsrc-box.org (Postfix) with ESMTP id 08CDCE7BA9E
	for <freebsd-hackers@freebsd.org>; Sat, 15 Dec 2007 10:50:28 +0000 (UTC)
Received: by britannica.bec.de (Postfix, from userid 1000)
	id 74C33175B9; Sat, 15 Dec 2007 11:47:30 +0100 (CET)
Date: Sat, 15 Dec 2007 11:47:30 +0100
From: Joerg Sonnenberger <joerg@britannica.bec.de>
To: freebsd-hackers@freebsd.org
Message-ID: <20071215104730.GB16063@britannica.bec.de>
Mail-Followup-To: freebsd-hackers@freebsd.org
References: <4763A398.2040109@mansionfamily.plus.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4763A398.2040109@mansionfamily.plus.com>
User-Agent: Mutt/1.5.16 (2007-06-09)
Subject: Re: kqueue and libev
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 15 Dec 2007 11:11:56 -0000

On Sat, Dec 15, 2007 at 09:51:20AM +0000, James Mansion wrote:
>    Kqueue deserves special mention, as at the time of this writing, it
>    was broken on all BSDs except NetBSD (usually it doesn't work with
>    anything but sockets and pipes, except on Darwin, where of course
>    its completely useless).

You normally don't get useful writeable/readable state for files, if
that is what the author means. This is the same situation as you have
with poll(2) and select(2) though. Otherwise I can't think of what he
could mean.

Joerg