From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15674 invoked by alias); 30 Aug 2011 17:53:39 -0000 Received: (qmail 15666 invoked by uid 22791); 30 Aug 2011 17:53:38 -0000 X-SWARE-Spam-Status: No, hits=-7.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,SPF_HELO_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 30 Aug 2011 17:53:22 +0000 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p7UHrLHv007984 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 30 Aug 2011 13:53:21 -0400 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p7UHrKtq001569; Tue, 30 Aug 2011 13:53:20 -0400 Received: from barimba (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id p7UHrIck023182; Tue, 30 Aug 2011 13:53:19 -0400 From: Tom Tromey To: Jan Kratochvil Cc: Mark Kettenis , sanjoy@playingwithpointers.com, gdb-patches@sourceware.org Subject: Re: [PATCH 5/6] New JIT unwinder. References: <1313821635-22137-1-git-send-email-sanjoy@playingwithpointers.com> <1313821635-22137-6-git-send-email-sanjoy@playingwithpointers.com> <20110820175838.GC26447@host1.jankratochvil.net> <201108201829.p7KITqt7024731@glazunov.sibelius.xs4all.nl> <20110820194503.GA21581@host1.jankratochvil.net> Date: Tue, 30 Aug 2011 17:53:00 -0000 In-Reply-To: <20110820194503.GA21581@host1.jankratochvil.net> (Jan Kratochvil's message of "Sat, 20 Aug 2011 21:45:03 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain 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 X-SW-Source: 2011-08/txt/msg00620.txt.bz2 >>>>> "Jan" == Jan Kratochvil writes: Jan> Couldn't GDB just export these functions to the plugin without Jan> having to use the callbacks vector? Python does so, libthread_db Jan> does so (see proc-service.list). Mark> I'd say that's a bad idea. The --dynamic-list linker option isn't Mark> uniformly available, and even -rdynamic may not work everywehere. Jan> But neither glibc libthread_db nor Python works there. But it is Jan> true I heard some platforms have problems creating libraries with Jan> referenced unresolved by any other library. I think the proposed approach is more flexible, since it lets us more easily mess with renames and API version changes while keeping compatibility; while I don't think there are definite advantages to the libthread_db approach. Tom