From patchwork Mon Jan 24 17:33:06 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabien Chouteau X-Patchwork-Id: 80220 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [199.232.76.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id D2124B7124 for ; Tue, 25 Jan 2011 04:46:07 +1100 (EST) Received: from localhost ([127.0.0.1]:45201 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PhQUO-0001cv-SN for incoming@patchwork.ozlabs.org; Mon, 24 Jan 2011 12:46:04 -0500 Received: from [140.186.70.92] (port=35201 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PhQHs-0004Kf-BN for qemu-devel@nongnu.org; Mon, 24 Jan 2011 12:34:12 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PhQHq-000350-U1 for qemu-devel@nongnu.org; Mon, 24 Jan 2011 12:33:08 -0500 Received: from mel.act-europe.fr ([194.98.77.210]:44978) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PhQHq-00034T-MT for qemu-devel@nongnu.org; Mon, 24 Jan 2011 12:33:06 -0500 Received: from localhost (localhost [127.0.0.1]) by filtered-smtp.eu.adacore.com (Postfix) with ESMTP id B2362CB02D0; Mon, 24 Jan 2011 18:33:05 +0100 (CET) X-Virus-Scanned: amavisd-new at eu.adacore.com Received: from mel.act-europe.fr ([127.0.0.1]) by localhost (smtp.eu.adacore.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6wHAyq+iR820; Mon, 24 Jan 2011 18:33:05 +0100 (CET) Received: from PomPomGalli.act-europe.fr (pompomgalli.act-europe.fr [10.10.1.88]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mel.act-europe.fr (Postfix) with ESMTP id 9E579CB0289; Mon, 24 Jan 2011 18:33:05 +0100 (CET) From: Fabien Chouteau To: qemu-devel@nongnu.org Date: Mon, 24 Jan 2011 18:33:06 +0100 Message-Id: X-Mailer: git-send-email 1.7.1 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) Cc: Fabien Chouteau Subject: [Qemu-devel] [PATCH][RFC] New trace-event backend: stdio X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This backend sends trace events to standard output during the emulation. Signed-off-by: Fabien Chouteau --- configure | 2 +- docs/tracing.txt | 5 +++++ scripts/tracetool | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 57 insertions(+), 2 deletions(-) diff --git a/configure b/configure index 210670c..2672f2a 100755 --- a/configure +++ b/configure @@ -907,7 +907,7 @@ echo " --enable-docs enable documentation build" echo " --disable-docs disable documentation build" echo " --disable-vhost-net disable vhost-net acceleration support" echo " --enable-vhost-net enable vhost-net acceleration support" -echo " --enable-trace-backend=B Trace backend nop simple ust dtrace" +echo " --enable-trace-backend=B Trace backend nop simple stdio ust dtrace" echo " --with-trace-file=NAME Full PATH,NAME of file to store traces" echo " Default:trace-" echo " --disable-spice disable spice" diff --git a/docs/tracing.txt b/docs/tracing.txt index 963c504..de033ad 100644 --- a/docs/tracing.txt +++ b/docs/tracing.txt @@ -133,6 +133,11 @@ source tree. It may not be as powerful as platform-specific or third-party trace backends but it is portable. This is the recommended trace backend unless you have specific needs for more advanced backends. +=== Stdio === + +The "stdio" backend sends trace events directly to standard output during +emulation. + ==== Monitor commands ==== * info trace diff --git a/scripts/tracetool b/scripts/tracetool index fce491c..01f81a1 100755 --- a/scripts/tracetool +++ b/scripts/tracetool @@ -19,6 +19,7 @@ Generate tracing code for a file on stdin. Backends: --nop Tracing disabled --simple Simple built-in backend + --stdio Stdio built-in backend --ust LTTng User Space Tracing backend --dtrace DTrace/SystemTAP backend @@ -236,6 +237,55 @@ linetoc_end_simple() EOF } +#STDIO +linetoh_begin_stdio() +{ + return +} + +linetoh_stdio() +{ + local name args argnamess argc fmt + name=$(get_name "$1") + args=$(get_args "$1") + argnames=$(get_argnames "$1" ",") + argc=$(get_argc "$1") + state=$(get_state "$1") + fmt=$(get_fmt "$1") + + if [ "$argc" -gt 0 ]; then + argnames=", $argnames" + fi + + cat <