From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ihor Radchenko Newsgroups: gmane.emacs.devel Subject: Re: Emacs design and architecture. How about copy-on-write? Date: Fri, 22 Sep 2023 13:08:42 +0000 Message-ID: <87lecywe1x.fsf@localhost> References: <87bkdzeas1.fsf@localhost> <83cyyfe5l8.fsf@gnu.org> <87led2o0nb.fsf@localhost> <83ttrqcpfb.fsf@gnu.org> <877comnv4a.fsf@localhost> <83fs3ackrq.fsf@gnu.org> <99e84ae7-b3aa-a009-5cb8-a75826343196@gutov.dev> <838r92cgxp.fsf@gnu.org> <837comcam8.fsf@gnu.org> <6946e6f0-c6ef-186c-35d4-c09935c05a07@gutov.dev> <83y1h1axtq.fsf@gnu.org> <87cyyd8487.fsf@localhost> <83il84c3p4.fsf@gnu.org> <87pm2bzu33.fsf@localhost> <831qerac81.fsf@gnu.org> <87pm2ay13w.fsf@localhost> <83o7hu77bm.fsf@gnu.org> <87wmwiwey6.fsf@localhost> <8334z6745u.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="7444"; mail-complaints-to="usenet@ciao.gmane.io" Cc: dmitry@gutov.dev, acm@muc.de, incal@dataswamp.org, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Sep 22 15:07:53 2023 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qjfsv-0001mI-1t for ged-emacs-devel@m.gmane-mx.org; Fri, 22 Sep 2023 15:07:53 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qjfsd-0001v3-1T; Fri, 22 Sep 2023 09:07:35 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qjfsb-0001uS-8N for emacs-devel@gnu.org; Fri, 22 Sep 2023 09:07:33 -0400 Original-Received: from mout02.posteo.de ([185.67.36.66]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qjfsY-0002vc-2i for emacs-devel@gnu.org; Fri, 22 Sep 2023 09:07:32 -0400 Original-Received: from submission (posteo.de [185.67.36.169]) by mout02.posteo.de (Postfix) with ESMTPS id E6A65240103 for ; Fri, 22 Sep 2023 15:07:27 +0200 (CEST) Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4RsXcH0Wx7z6tw4; Fri, 22 Sep 2023 15:07:26 +0200 (CEST) In-Reply-To: <8334z6745u.fsf@gnu.org> Received-SPF: pass client-ip=185.67.36.66; envelope-from=yantar92@posteo.net; helo=mout02.posteo.de X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:310964 Archived-At: Eli Zaretskii writes: >> The algorithm I have in mind is to change interval tree to store several >> trees together - a common tree storing segments delimited by _a_ >> property change + a tree for individual properties. That way, looking up >> for next single property change will be a simple call to next_interval for >> the property itself + property aliases. > > Feel free to implement that and benchmark it against the current > implementation. If it's significantly faster, I';m sure we will > accept the changes. It is on my todo list.