From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Asynchronous DNS Date: Sat, 20 Feb 2016 12:57:23 +0200 Message-ID: <83egc7ps30.fsf@gnu.org> References: <8760y9kwrk.fsf@gnus.org> <87wpqpjgwy.fsf@gnus.org> <83a8nk1cxk.fsf@gnu.org> <87h9hrnc8x.fsf@gnus.org> <83powfzsqt.fsf@gnu.org> <87y4b393hl.fsf@gnus.org> <83io27ytu3.fsf@gnu.org> <87k2mmzkry.fsf@gnus.org> <83k2mlyet8.fsf@gnu.org> <87lh71nriy.fsf@gnus.org> <8637t8opla.fsf@realize.ch> <871t8skg6c.fsf@gnus.org> <86y4b0n5q2.fsf@realize.ch> <87fux7gb7o.fsf@gnus.org> <83wpqjvd2f.fsf@gnu.org> <87zivfobn4.fsf@gnus.org> <86y4ao5g1c.fsf@realize.ch> <87r3ggdo9f.fsf@gnus.org> <86twlb5yl4.fsf@realize.ch> <83d1rzz1mu.fsf@gnu.org> <86egcc49qu.fsf@realize.ch> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1455965873 31598 80.91.229.3 (20 Feb 2016 10:57:53 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 20 Feb 2016 10:57:53 +0000 (UTC) Cc: larsi@gnus.org, emacs-devel@gnu.org To: Alain Schneble Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Feb 20 11:57:49 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1aX5ES-0000p9-LU for ged-emacs-devel@m.gmane.org; Sat, 20 Feb 2016 11:57:48 +0100 Original-Received: from localhost ([::1]:60010 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aX5ES-0000So-7a for ged-emacs-devel@m.gmane.org; Sat, 20 Feb 2016 05:57:48 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:43219) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aX5EN-0000SL-T1 for emacs-devel@gnu.org; Sat, 20 Feb 2016 05:57:46 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aX5EK-0008Dr-3t for emacs-devel@gnu.org; Sat, 20 Feb 2016 05:57:43 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:59028) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aX5EK-0008Dn-0L; Sat, 20 Feb 2016 05:57:40 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1384 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1aX5EI-0003Ln-Ix; Sat, 20 Feb 2016 05:57:39 -0500 In-reply-to: <86egcc49qu.fsf@realize.ch> (message from Alain Schneble on Tue, 16 Feb 2016 22:37:45 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:200298 Archived-At: > From: Alain Schneble > CC: , > Date: Tue, 16 Feb 2016 22:37:45 +0100 > > Eli Zaretskii writes: > > >> From: Alain Schneble > >> CC: Eli Zaretskii , > >> Date: Sun, 14 Feb 2016 12:19:03 +0100 > >> > >> Lars Ingebrigtsen writes: > >> > >> > Alain Schneble writes: > >> > > >> >> The following patch removes the separate dns_processes list in favour of > >> >> reusing Vprocess_alist. The latter list is now used to loop over all > >> >> processes -- to check if pending DNS requests have completed. > >> >> > >> >> Do you agree whith this change? > >> > > >> > Well, it changes a test in the network loop that is basically a if (! > >> > NILP (Qnil)) in 99.9999% (plus some nines) of the cases with code that > >> > loops through all processes in the network loop all the time. > >> > >> True. Seems like I was too naive. I thought that these additional > >> cycles were negligible (even though it's O(n)...). > > > > We could traverse the list when Emacs is idle and maintain the result > > in a cache variable. > > What exactly do you mean by "when Emacs is idle"? The loop is in > wait_reading_process_output and I thought that this is "kind of" > executed when Emacs is idle. That's what I meant.