From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20186 invoked by alias); 5 Dec 2013 01:39:47 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 20177 invoked by uid 89); 5 Dec 2013 01:39:47 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=2.8 required=5.0 tests=AWL,BAYES_50,GARBLED_BODY autolearn=no version=3.3.2 X-HELO: relay1.mentorg.com Received: from Unknown (HELO relay1.mentorg.com) (192.94.38.131) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 05 Dec 2013 01:39:46 +0000 Received: from svr-orw-fem-01.mgc.mentorg.com ([147.34.98.93]) by relay1.mentorg.com with esmtp id 1VoNub-0002A5-VB from Yao_Qi@mentor.com ; Wed, 04 Dec 2013 17:39:29 -0800 Received: from SVR-ORW-FEM-04.mgc.mentorg.com ([147.34.97.41]) by svr-orw-fem-01.mgc.mentorg.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Wed, 4 Dec 2013 17:39:29 -0800 Received: from qiyao.dyndns.org (147.34.91.1) by svr-orw-fem-04.mgc.mentorg.com (147.34.97.41) with Microsoft SMTP Server id 14.2.247.3; Wed, 4 Dec 2013 17:39:29 -0800 Message-ID: <529FD8F7.1020305@codesourcery.com> Date: Thu, 05 Dec 2013 01:39:00 -0000 From: Yao Qi User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Doug Evans CC: Pedro Alves , Mark Kettenis , gdb-patches Subject: Re: [PATCH 2/3] skip_prolgoue (amd64) References: <1385735051-27558-1-git-send-email-yao@codesourcery.com> <1385735051-27558-3-git-send-email-yao@codesourcery.com> <201311291436.rATEaZ5Z030292@glazunov.sibelius.xs4all.nl> <201311291605.rATG5XVb030184@glazunov.sibelius.xs4all.nl> <52994E79.4000004@codesourcery.com> <5299B9D0.2020304@redhat.com> In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2013-12/txt/msg00164.txt.bz2 On 12/05/2013 01:54 AM, Doug Evans wrote: > The dcache and non-stop are basically incompatible, but we need both. Agreed. > With any other thread still running the ground can be pulled out from > underneath my view of memory from a stopped thread (even when I'm in > the middle of viewing it - I can imagine a pretty-printer of a complex > object getting really confused for example). > It feels like there's diminishing returns and increasing costs the > farther we go to try to protect the user from this. That is reasonable. In the long term, we'll switch to "running all-stop on top of non-stop", users shouldn't get staled results because they think they are in "all-stop" mode, although all-stop is "simulated" by non-stop, which is invisible to users. -- Yao (齐尧)