From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andy Moreton Newsgroups: gmane.emacs.devel Subject: Re: master 2c79a8f 2/2: Use posix_spawn if possible. Date: Fri, 01 Jan 2021 23:38:14 +0000 Message-ID: <86k0swut21.fsf@gmail.com> References: <835z4qnhyx.fsf@gnu.org> <83y2hklqhg.fsf@gnu.org> <83wnx4lq3b.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="34838"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (windows-nt) To: emacs-devel@gnu.org Cancel-Lock: sha1:I5CbqnT2wHWLD4ewT4LMA+x76sI= Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sat Jan 02 00:38:59 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 1kvU0Z-0008oV-GS for ged-emacs-devel@m.gmane-mx.org; Sat, 02 Jan 2021 00:38:59 +0100 Original-Received: from localhost ([::1]:36450 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kvU0Y-0001ga-Eg for ged-emacs-devel@m.gmane-mx.org; Fri, 01 Jan 2021 18:38:58 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:47326) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kvTzz-0000ru-Ij for emacs-devel@gnu.org; Fri, 01 Jan 2021 18:38:23 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]:52506) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kvTzy-0002Hr-Ab for emacs-devel@gnu.org; Fri, 01 Jan 2021 18:38:23 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1kvTzv-0008Aq-IX for emacs-devel@gnu.org; Sat, 02 Jan 2021 00:38:19 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=ged-emacs-devel@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: 5 X-Spam_score: 0.5 X-Spam_bar: / X-Spam_report: (0.5 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, NML_ADSP_CUSTOM_MED=0.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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:262273 Archived-At: On Thu 31 Dec 2020, Philipp Stephani wrote: > The annoying thing about this, though, is that it doesn't work on the > BSDs (including macOS). For pty processes on those systems we'll have > to continue using fork/vfork for the time being. > I think that using posix_spawn on GNU/Linux and for non-pty processes > is still a significant win, though. Can I ask why ? You have not yet explained what benefit this change brings, and the length of the discussion shows that there are difficulties with it. What is improved by using posix_spawn ? AndyM