From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17244 invoked by alias); 13 Jun 2011 01:57:06 -0000 Received: (qmail 17233 invoked by uid 22791); 13 Jun 2011 01:57:05 -0000 X-SWARE-Spam-Status: No, hits=-2.3 required=5.0 tests=AWL,BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,RFC_ABUSE_POST,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: sourceware.org Received: from mail-iw0-f169.google.com (HELO mail-iw0-f169.google.com) (209.85.214.169) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 13 Jun 2011 01:56:50 +0000 Received: by iwg8 with SMTP id 8so4887601iwg.0 for ; Sun, 12 Jun 2011 18:56:49 -0700 (PDT) MIME-Version: 1.0 Received: by 10.42.108.9 with SMTP id f9mr2207527icp.358.1307930209238; Sun, 12 Jun 2011 18:56:49 -0700 (PDT) Received: by 10.42.176.72 with HTTP; Sun, 12 Jun 2011 18:56:49 -0700 (PDT) Date: Mon, 13 Jun 2011 01:57:00 -0000 Message-ID: Subject: Re: ReBranch - a record-replay debugging tool From: Robert Bu To: pi3orama@gmail.com Cc: gdb@sourceware.org Content-Type: text/plain; charset=ISO-8859-1 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/msg00088.txt.bz2 Hi, For data flow, recording syscall is not enough. There may be IO interaction. I think your current implementation looks like a PC tracing, replaying tool. Robert >From: pi3orama >To: paawan oza >Date: Fri, 10 Jun 2011 17:34:23 +0800 >Subject: Re: ReBranch - a record-replay debugging tool >In multi-thread situation, nearly all data-flow information is lost >because of propagation. However, in single thread situation, signal >processing and system call results are all recorded and replayed, all >data-flow info can still be restored. > >> ok got that point. >> so in conclusion, any data-flow info which is reponsible for crash may not be >> caught by rebranch, or there is a way ? >> >> Regards, >> Oza.