From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: How to add pseudo vector types Date: Sat, 24 Jul 2021 17:32:30 +0300 Message-ID: <83eebnzssh.fsf@gnu.org> References: <83h7gw6pyj.fsf@gnu.org> <45EBF16A-C953-42C7-97D1-3A2BFEF7DD01@gmail.com> <83y2a764oy.fsf@gnu.org> <83v95b60fn.fsf@gnu.org> <00DD5BFE-D14E-449A-9319-E7B725DEBFB3@gmail.com> <83r1fz5xr9.fsf@gnu.org> <1AAB1BCC-362B-4249-B785-4E0530E15C60@gmail.com> <83czri67h0.fsf@gnu.org> <46BBFF88-76C3-4818-8805-5437409BEA93@gmail.com> <83wnpq46uk.fsf@gnu.org> <533BD53B-4E85-4E9E-B46A-346A5BBAD0F5@gmail.com> <258CB68D-1CC1-42C8-BDCD-2A8A8099B783@gmail.com> <1a776770-50b7-93cd-6591-c9a5b3a56eb8@gmail.com> <831r7w4yhb.fsf@gnu.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="35278"; mail-complaints-to="usenet@ciao.gmane.io" Cc: cpitclaudel@gmail.com, emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Jul 24 16:33:40 2021 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 1m7Iih-0008wH-Sb for ged-emacs-devel@m.gmane-mx.org; Sat, 24 Jul 2021 16:33:39 +0200 Original-Received: from localhost ([::1]:54536 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m7Iig-0004U1-Ii for ged-emacs-devel@m.gmane-mx.org; Sat, 24 Jul 2021 10:33:38 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:43014) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m7Ihq-0003hq-JP for emacs-devel@gnu.org; Sat, 24 Jul 2021 10:32:46 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:42102) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m7Ihq-0005RS-BA; Sat, 24 Jul 2021 10:32:46 -0400 Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:1262 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m7Ihp-0008Dx-Uv; Sat, 24 Jul 2021 10:32:46 -0400 In-Reply-To: (message from Stefan Monnier on Sat, 24 Jul 2021 10:08:58 -0400) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.io gmane.emacs.devel:271544 Archived-At: > From: Stefan Monnier > Cc: cpitclaudel@gmail.com, emacs-devel@gnu.org > Date: Sat, 24 Jul 2021 10:08:58 -0400 > > >> If we copy the buffer's content to a freshly malloc area before passing > >> that to TS, then there should be no problem running TS in a separate > >> concurrent thread, indeed. > > Making a copy of the buffer is a non-starter from where I stand. It > > doesn't scale, for starters. I don't see any reason to go to such a > > complex design at this early stage. > > I see absolutely no problem with scaling in making a copy: the extra > memory and CPU time taken by the copy will be a constant factor which > I don't expect to go much beyond 10% 10% of what? It will be 100% of all the buffers that need parsing. > I'm not sure we'll want to do that, but I see no reason to consider it > a non-starter. It's a bad start, okay? Anyway, it looks like nothing like that will be necessary, fortunately.