From owner-freebsd-hackers@FreeBSD.ORG Thu Mar 7 18:17:06 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id F3037532 for ; Thu, 7 Mar 2013 18:17:06 +0000 (UTC) (envelope-from erdgeist@erdgeist.org) Received: from elektropost.org (elektropost.org [217.13.206.130]) by mx1.freebsd.org (Postfix) with ESMTP id 50C95ABC for ; Thu, 7 Mar 2013 18:17:05 +0000 (UTC) Received: (qmail 86772 invoked from network); 7 Mar 2013 18:16:59 -0000 Received: from elektropost.org (HELO elektropost.org) (erdgeist@erdgeist.org) by elektropost.org with CAMELLIA256-SHA encrypted SMTP; 7 Mar 2013 18:16:59 -0000 Message-ID: <5138D99E.8010700@erdgeist.org> Date: Thu, 07 Mar 2013 19:17:02 +0100 From: Dirk Engling User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130216 Thunderbird/17.0.3 MIME-Version: 1.0 CC: freebsd-hackers@freebsd.org Subject: Re: pop filters from kqueue References: <513622F2.20902@mu.org> In-Reply-To: <513622F2.20902@mu.org> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Mar 2013 18:17:07 -0000 On 05.03.13 17:53, Alfred Perlstein wrote: Alfred, > I'm not sure if kqueue support this, however adding such a facility > might be OK. thanks for your reply. What would be the correct place to suggest such a change? > The only pain here is that it requires managing a doubly linked list and > additional pointer dereferences. Which seems extra absurd in the light of a performant implementation already handling all this - within the kqueue. And it still does not solve my problem that for every operation on my allocation I need to update pointers both in the kqueue and in my linked list. Regards, erdgeist