From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: scratch/sigchld-fd 8f0ce42 1/2: Fix deadlock when receiving SIGCHLD during 'pselect'. Date: Wed, 20 Jan 2021 19:07:15 +0100 Message-ID: <87ft2vv5ws.fsf@igel.home> References: <20210116184947.2105.45267@vcs0.savannah.gnu.org> <20210116184949.3C17C211A5@vcs0.savannah.gnu.org> <834kjd7yk5.fsf@gnu.org> <83turc7n93.fsf@gnu.org> <871regr6x5.fsf@igel.home> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34127"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1.90 (gnu/linux) Cc: Eli Zaretskii , Philipp Stephani , Emacs developers To: Philipp Stephani Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed Jan 20 19:09:56 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 1l2HvW-0008gt-Pb for ged-emacs-devel@m.gmane-mx.org; Wed, 20 Jan 2021 19:09:54 +0100 Original-Received: from localhost ([::1]:58706 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l2HvV-0004sI-RH for ged-emacs-devel@m.gmane-mx.org; Wed, 20 Jan 2021 13:09:53 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58700) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l2Ht6-0003S8-M5 for emacs-devel@gnu.org; Wed, 20 Jan 2021 13:07:26 -0500 Original-Received: from mail-out.m-online.net ([212.18.0.9]:33933) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l2Ht1-0007ON-T6; Wed, 20 Jan 2021 13:07:24 -0500 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4DLYQD4hFsz1qsk5; Wed, 20 Jan 2021 19:07:16 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4DLYQD4GRTz1r2xt; Wed, 20 Jan 2021 19:07:16 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id lSpZfT5qB7te; Wed, 20 Jan 2021 19:07:15 +0100 (CET) X-Auth-Info: +YABGUtBh370TrmMR+RKGdvmbWP9jnlZl5dbAMBU1TI4A7c/WOzo6b1mu1Aeg7tp Original-Received: from igel.home (ppp-46-244-163-184.dynamic.mnet-online.de [46.244.163.184]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Wed, 20 Jan 2021 19:07:15 +0100 (CET) Original-Received: by igel.home (Postfix, from userid 1000) id 610732C35FC; Wed, 20 Jan 2021 19:07:15 +0100 (CET) X-Yow: And furthermore, my bowling average is unimpeachable!!! In-Reply-To: (Philipp Stephani's message of "Tue, 19 Jan 2021 21:58:26 +0100") Received-SPF: pass client-ip=212.18.0.9; envelope-from=whitebox@nefkom.net; helo=mail-out.m-online.net X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.248, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=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: 2.1.23 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:263216 Archived-At: On Jan 19 2021, Philipp Stephani wrote: > Right. It looks like we're not doing that because we want to support > systems that don't have pselect (and it's gnulib emulation can't be > race-free). For those that don't provide a proper pselect, the situation wouldn't be worse than today. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."