From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23099 invoked by alias); 3 Nov 2005 17:51:01 -0000 Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org Received: (qmail 23088 invoked by uid 22791); 3 Nov 2005 17:50:57 -0000 Received: from elbarto.betaversion.net (HELO elbarto.betaversion.net) (82.165.28.81) by sourceware.org (qpsmtpd/0.30-dev) with ESMTP; Thu, 03 Nov 2005 17:50:57 +0000 Received: by elbarto.betaversion.net (Postfix, from userid 8) id 145FAA36ED; Thu, 3 Nov 2005 18:50:56 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by elbarto.betaversion.net (Postfix) with ESMTP id 57C5BA373B; Thu, 3 Nov 2005 18:50:48 +0100 (CET) Received: from elbarto.betaversion.net ([127.0.0.1]) by localhost (elbarto.betaversion.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 11210-06; Thu, 3 Nov 2005 18:50:47 +0100 (CET) Received: from elbarto.betaversion.net (localhost [127.0.0.1]) by elbarto.betaversion.net (Postfix) with ESMTP id 8140BA36ED; Thu, 3 Nov 2005 18:50:47 +0100 (CET) Received: from p54A7D878.dip.t-dialin.net (p54A7D878.dip.t-dialin.net [84.167.216.120]) by admin.betaversion.net (Horde) with HTTP for ; Thu, 03 Nov 2005 18:50:47 +0100 Message-ID: <20051103185047.8o634uhdvtsg8kcc@admin.betaversion.net> Date: Thu, 03 Nov 2005 17:51:00 -0000 From: Frank Meerkoetter To: Daniel Jacobowitz Cc: gdb@sourceware.org Subject: Re: multithreaded programs on arm-linux References: <20051102143909.GA27932@nevyn.them.org> <20051102165558.mg4g0d5htl8ockco@admin.betaversion.net> <20051102164925.GA31801@nevyn.them.org> <20051103093306.qyr5bz57icqo04ck@admin.betaversion.net> <20051103135617.GA29302@nevyn.them.org> <20051103160009.8sy1s7ydxhwok0ww@admin.betaversion.net> <20051103150707.GA31256@nevyn.them.org> <20051103165107.69fo0r6r2li8csws@admin.betaversion.net> <20051103155928.GA630@nevyn.them.org> <20051103172809.nzyshptn7w5cscs0@admin.betaversion.net> <20051103164212.GA2532@nevyn.them.org> In-Reply-To: <20051103164212.GA2532@nevyn.them.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: 7bit User-Agent: Internet Messaging Program (IMP) H3 (4.0) X-Remote-Browser: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050920 Firefox/1.0.7 SUSE/1.0.7-0.1 X-SW-Source: 2005-11/txt/msg00068.txt.bz2 Quoting Daniel Jacobowitz : > On Thu, Nov 03, 2005 at 05:28:09PM +0100, Frank Meerkoetter wrote: >> thread_db_new_objfile() is called two times. >> On the first run it prints the library name and >> than branches on the falg using_thread_db >> to the label quit. >> There it returns without executing target_new_objfile_chain (objfile). >> >> The second time the same path is followed but without branching into >> the block protected by the flag dejavu. >> >> In neither cases is this line executed: >> /* Now attempt to open a connection to the thread library. */ >> err = td_ta_new_p (&proc_handle, &thread_agent); > > Then what set using_thread_db? I misinterpreted the indentation level at the first try. So the paths reported above are a little bit different. The problem is that we end up in the block below. static void thread_db_new_objfile (struct objfile *objfile) [...] /* Don't attempt to use thread_db on targets which can not run (core files). */ if (objfile == NULL || !target_has_execution) { /* All symbols have been discarded. If the thread_db target is active, deactivate it now. */ if (using_thread_db) { gdb_assert (proc_handle.pid == 0); unpush_target (&thread_db_ops); using_thread_db = 0; } goto quit; } objfile is NULL, why i couldn't figure out. Regards, Frank