From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6407 invoked by alias); 9 Jun 2011 10:32:59 -0000 Received: (qmail 6398 invoked by uid 22791); 9 Jun 2011 10:32:58 -0000 X-SWARE-Spam-Status: No, hits=0.6 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,RFC_ABUSE_POST,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from nm6-vm0.bullet.mail.sp2.yahoo.com (HELO nm6-vm0.bullet.mail.sp2.yahoo.com) (98.139.91.206) by sourceware.org (qpsmtpd/0.43rc1) with SMTP; Thu, 09 Jun 2011 10:32:44 +0000 Received: from [98.139.91.70] by nm6.bullet.mail.sp2.yahoo.com with NNFMP; 09 Jun 2011 10:32:44 -0000 Received: from [98.139.91.17] by tm10.bullet.mail.sp2.yahoo.com with NNFMP; 09 Jun 2011 10:32:44 -0000 Received: from [127.0.0.1] by omp1017.mail.sp2.yahoo.com with NNFMP; 09 Jun 2011 10:32:44 -0000 Received: (qmail 47412 invoked by uid 60001); 9 Jun 2011 10:32:43 -0000 Message-ID: <641906.35134.qm@web112513.mail.gq1.yahoo.com> Received: from [115.99.18.98] by web112513.mail.gq1.yahoo.com via HTTP; Thu, 09 Jun 2011 03:32:43 PDT References: <1307602807.17016.ezmlm@sourceware.org> <4DF0748B.2060703@gmail.com> <201106091027.20575.pedro@codesourcery.com> Date: Thu, 09 Jun 2011 10:32:00 -0000 From: paawan oza Subject: Re: ReBranch - a record-replay debugging tool To: pi3orama Cc: Pedro Alves , gdb@sourceware.org In-Reply-To: <201106091027.20575.pedro@codesourcery.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2011-06/txt/msg00044.txt.bz2 Hi, in the site it says: GDB The replay is driven by GDB, nearly all GDB commands are useable. Do I understand that recording is adopted differently ? Regards,Oza. ________________________________ From: Pedro Alves To: gdb@sourceware.org Cc: pi3orama Sent: Thu, June 9, 2011 2:57:20 PM Subject: Re: ReBranch - a record-replay debugging tool On Thursday 09 June 2011 08:21:47, pi3orama wrote: > Hi, > > I developed a new record-replay tool -- ReBranch > (http://code.google.com/p/rebranch/), which focus on debugging > non-deterministic bugs. ReBranch can record the outgoing addresses of > every branch instructions, and recreate the whole control flow when > debugging. I have use it to fix some bugs in real open source projects > such as lighttpd and memcached. Unfortunately, few people knows this > project at google code, so nearly no one uses it. Nice! > > I know that GDB has its own record-replay. However, I still believe > ReBranch is useful: ReBranch focus on recording in production systems, > its record performance is better than GDB's recording, it can record > whole program path (GDB can only record part of it), and most important, > ReBranch can be used in multi-threading programs. Can you outline ReBranch's record/replay strategy, and how it differs from GDB's record? > I send this mail because I eagerly expect people to use my tool on their > developing process, and help me to improve it. And also, I want the > replay tool to be more integrated with GDB -- currently ReBranch use a > modified gdbserver to do the replay work, however, because ReBranch only > records control-flow, the replay performance is far from prefect. Since it based on modified gdbserver sources, making it a derivative work, it must be GPLv3, right? I ask because the website says MIT license. -- Pedro Alves