From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Alan Mackenzie Newsgroups: gmane.emacs.bugs Subject: bug#10652: 24.0.93; font-lock very slow for C++ Date: Fri, 16 Mar 2012 14:19:37 +0000 Message-ID: <20120316141937.GC3439@acm.acm> References: <874nuekjte.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1331907676 5944 80.91.229.3 (16 Mar 2012 14:21:16 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 16 Mar 2012 14:21:16 +0000 (UTC) Cc: Helmut Eller , 10652@debbugs.gnu.org To: Chong Yidong Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Mar 16 15:21:14 2012 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1S8Y1n-0002cY-GO for geb-bug-gnu-emacs@m.gmane.org; Fri, 16 Mar 2012 15:21:11 +0100 Original-Received: from localhost ([::1]:35453 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S8Y1m-0004SE-Rt for geb-bug-gnu-emacs@m.gmane.org; Fri, 16 Mar 2012 10:21:10 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:36235) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S8Y1g-0004QE-0R for bug-gnu-emacs@gnu.org; Fri, 16 Mar 2012 10:21:09 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1S8Y1Y-0000LR-8B for bug-gnu-emacs@gnu.org; Fri, 16 Mar 2012 10:21:03 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:46730) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1S8Y1Q-0000Js-Vw; Fri, 16 Mar 2012 10:20:49 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1S8YUg-0003Bm-0z; Fri, 16 Mar 2012 10:51:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Alan Mackenzie Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org, bug-cc-mode@gnu.org Resent-Date: Fri, 16 Mar 2012 14:51:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 10652 X-GNU-PR-Package: emacs,cc-mode X-GNU-PR-Keywords: Original-Received: via spool by 10652-submit@debbugs.gnu.org id=B10652.133190945912250 (code B ref 10652); Fri, 16 Mar 2012 14:51:01 +0000 Original-Received: (at 10652) by debbugs.gnu.org; 16 Mar 2012 14:50:59 +0000 Original-Received: from localhost ([127.0.0.1]:53562 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1S8YUa-0003BV-TC for submit@debbugs.gnu.org; Fri, 16 Mar 2012 10:50:58 -0400 Original-Received: from colin.muc.de ([193.149.48.1]:44181 helo=mail.muc.de) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1S8YUX-0003BJ-P5 for 10652@debbugs.gnu.org; Fri, 16 Mar 2012 10:50:55 -0400 Original-Received: (qmail 81712 invoked by uid 3782); 16 Mar 2012 14:20:38 -0000 Original-Received: from acm.muc.de (pD951A238.dip.t-dialin.net [217.81.162.56]) by colin.muc.de (tmda-ofmipd) with ESMTP; Fri, 16 Mar 2012 15:20:36 +0100 Original-Received: (qmail 5625 invoked by uid 1000); 16 Mar 2012 14:19:37 -0000 Content-Disposition: inline In-Reply-To: <874nuekjte.fsf@gnu.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-Delivery-Agent: TMDA/1.1.12 (Macallan) X-Primary-Address: acm@muc.de X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:57822 Archived-At: Hello, Yidong, Helmut. On Sun, Feb 26, 2012 at 05:47:25PM +0800, Chong Yidong wrote: > Helmut Eller writes: > > Font lock is extremely slow in this file: > > http://hg.openjdk.java.net/jdk7/jdk7/hotspot/raw-file/b92c45f2bc75/src/share/vm/runtime/globals.hpp > > Download the file and open it with emacs -Q globals.hpp. Then > > scroll around in the file to see how slow it is. > I got Emacs into an uninterruptible loop while scrolling through the > buffer :-( > Looks like a regression against Emacs 23's CC mode, which handles the > file just fine. Alan, could you investigate? Thanks. I've just committed revision #107615, which solves the slow scrolling problem. Typing "electric" characters (e.g. comma) into the buffer is still slower than I'd like, but is tolerable. I don't intend doing any more optimisation before the next pretest (or release :-). -- Alan Mackenzie (Nuremberg, Germany).