From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Questions about throw-on-input Date: Mon, 11 May 2020 11:21:33 -0400 Message-ID: References: <1f5456b9-1fd6-5084-1578-8f6a413fe1b4@web.de> <834ksmd0fr.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="16380"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Alexander Miller , yyoncho@gmail.com, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Mon May 11 17:22:48 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 1jYAGW-00048U-Kl for ged-emacs-devel@m.gmane-mx.org; Mon, 11 May 2020 17:22:48 +0200 Original-Received: from localhost ([::1]:56660 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jYAGV-0000WO-9p for ged-emacs-devel@m.gmane-mx.org; Mon, 11 May 2020 11:22:47 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:40868) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jYAFP-0007aR-1G for emacs-devel@gnu.org; Mon, 11 May 2020 11:21:39 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:44433) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jYAFN-0000dT-F1; Mon, 11 May 2020 11:21:38 -0400 Original-Received: from pmg3.iro.umontreal.ca (localhost [127.0.0.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id F12C4450BEF; Mon, 11 May 2020 11:21:35 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg3.iro.umontreal.ca (Proxmox) with ESMTP id 52FAA450BE8; Mon, 11 May 2020 11:21:34 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1589210494; bh=p5FJ9NepP+7hqKo5M343n4CEoeNW7kPnIjVMI6fkRcQ=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=pa0w8WQfKbj6PDhD6cPtDXDOziv6EWGD6ERgXLTrg+3oIveyQp+1Vimp+1DC1Ctlg LEPcv4RzK05xuFCzGNdnNup7veXm+SjNK2lG7FxQ2TpTe0GxOEkAaLMXrHisCsEpNu EllgxRqfTLxQyoUeXMDOhIWjrDROQKwG1q0q1bP+z9YIZgKhpzHwheSwnUqN7g44vl JbZS0ShCBziXI6wnphF3R160S9Rdy9Bgc/XbWw5Q0XApZKjlT/5ab42JB9PlXWM98b 8xnHC5lJE/833iLHhRAGsjq8uK/X9UUih3FArxcNm47uZQIumLFna8znAEH+V5W8W6 TArdQB2zWxC6g== Original-Received: from alfajor (unknown [216.154.3.202]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id C3E4D120055; Mon, 11 May 2020 11:21:33 -0400 (EDT) In-Reply-To: <834ksmd0fr.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 11 May 2020 17:13:28 +0300") Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/11 10:58:52 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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:249802 Archived-At: > It is unusual for non-main threads to wait for keyboard input > descriptor. You shouldn't rely on that because it can only work very > rarely, if at all, and when it does, you are likely to see serious > problems. Normally, the 'pselect' call issued by a non-main thread > will not mark the keyboard descriptor as being waited for. Should input-pending-p and friends catch that case and signal an error, then? Stefan