From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Temporarily disable `timer-event-handler' Date: Mon, 03 Feb 2020 17:44:50 +0200 Message-ID: <83wo93hdzh.fsf@gnu.org> References: Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="25150"; mail-complaints-to="usenet@ciao.gmane.io" Cc: emacs@Alexander.Shukaev.name, emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon Feb 03 16:45:34 2020 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 1iyduo-0006Px-HV for ged-emacs-devel@m.gmane-mx.org; Mon, 03 Feb 2020 16:45:34 +0100 Original-Received: from localhost ([::1]:43636 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iydun-00088W-Id for ged-emacs-devel@m.gmane-mx.org; Mon, 03 Feb 2020 10:45:33 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34605) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iyduH-0007FM-Gq for emacs-devel@gnu.org; Mon, 03 Feb 2020 10:45:02 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:40743) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1iyduH-0006zp-3K; Mon, 03 Feb 2020 10:45:01 -0500 Original-Received: from [176.228.60.248] (port=4296 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1iyduG-0001gy-Ip; Mon, 03 Feb 2020 10:45:00 -0500 In-reply-to: (message from Stefan Monnier on Mon, 03 Feb 2020 09:01:47 -0500) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:244833 Archived-At: [I removed help-gnu-emacs from the CC list.] > From: Stefan Monnier > Date: Mon, 03 Feb 2020 09:01:47 -0500 > Cc: help-gnu-emacs@gnu.org, emacs-devel@gnu.org > > > Finally, what's the motivation behind this design? This looks fragile and > > error-prone to run some arbitrary code in the middle of execution of another > > code without separating their "stacks" (environment scopes), > > It's a direct consequence of the implementation, rather than the result > of design, AFAICT. There's also the need to run a timer as close to its expected time as possible, so waiting for any Lisp to return might delay timers too much.