From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: [OSSTEST PATCH 09/13] Planner: ms-queuedaemon: Synchronise thinking multiple walkers Date: Thu, 3 Sep 2015 13:06:25 +0100 Message-ID: <1441281985.26292.353.camel@citrix.com> References: <1441208719-31336-1-git-send-email-ian.jackson@eu.citrix.com> <1441208719-31336-10-git-send-email-ian.jackson@eu.citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZXTSm-0003Ei-S0 for xen-devel@lists.xenproject.org; Thu, 03 Sep 2015 12:17:56 +0000 In-Reply-To: <1441208719-31336-10-git-send-email-ian.jackson@eu.citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Ian Jackson , xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org On Wed, 2015-09-02 at 16:45 +0100, Ian Jackson wrote: > If multiple walkers want to ask the same chan, we want to serialise > them. This is actually straightforward: Firstly, we arrrange that > each walker finishing a thought will prompt _all_ walkers to > reconsider whether they need to continue. Then we can simply do > nothing if we want to a chan to think that another walker is already > waiting for; since that other walker will prompt us later. > > Still no actual functional change because there is still only one > walker. > > Signed-off-by: Ian Jackson Acked-by: Ian Campbell