From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Alan Third Newsgroups: gmane.emacs.devel Subject: Re: SIGIO and the NS port Date: Mon, 13 Mar 2017 16:38:17 +0000 Message-ID: <20170313163817.GA40836@breton.holly.idiocy.org> References: <20170310124117.GA74077@breton.holly.idiocy.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1489423120 5105 195.159.176.226 (13 Mar 2017 16:38:40 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 13 Mar 2017 16:38:40 +0000 (UTC) User-Agent: Mutt/1.7.2 (2016-11-26) To: Emacs-Devel devel Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Mar 13 17:38:36 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cnSzK-00007m-9g for ged-emacs-devel@m.gmane.org; Mon, 13 Mar 2017 17:38:26 +0100 Original-Received: from localhost ([::1]:53208 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnSzQ-0008RU-Ch for ged-emacs-devel@m.gmane.org; Mon, 13 Mar 2017 12:38:32 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:41285) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cnSzG-0008Pj-C2 for emacs-devel@gnu.org; Mon, 13 Mar 2017 12:38:23 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cnSzF-0003mi-H9 for emacs-devel@gnu.org; Mon, 13 Mar 2017 12:38:22 -0400 Original-Received: from mail-wm0-x22a.google.com ([2a00:1450:400c:c09::22a]:37378) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cnSzF-0003li-9l for emacs-devel@gnu.org; Mon, 13 Mar 2017 12:38:21 -0400 Original-Received: by mail-wm0-x22a.google.com with SMTP id n11so44555527wma.0 for ; Mon, 13 Mar 2017 09:38:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20161025; h=sender:date:from:to:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=uwvie6CK/w+ruh8VTXajbrNGBRMYsbIBt2Wg30mWRuQ=; b=cB9UhQFivuL8WdN3OTXzZBA+kSIaJ1Vcu/ECbgtH4yGQZwFvLexWHLBp4Ooy5Y6Yry eYxllZZer8PhWh2HeXlq+zF6jsEmvJo9wmJBd07UMti7evXKqgHqmG5W9qKvbHZPywea NYfG5h01IkE/04K/EczF8XGr21BElt3RmwXSBTJq4v5yvu9/0Ueu1BtY3C1SP1RBP+zG SaPlu71URwpu6g5I5cQbbQzetyBC5eAD7NZtcXeCqN/t4lR5qZsjvf+Yqi6vrnR6NqJY iel5WCOJ+OH4yQrHUrrH25TvGxk8YPhDLpiDlT8ccEA0BxqAzFmSSM7c77Z3poUgEsNe pPMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:subject:message-id :references:mime-version:content-disposition :content-transfer-encoding:in-reply-to:user-agent; bh=uwvie6CK/w+ruh8VTXajbrNGBRMYsbIBt2Wg30mWRuQ=; b=J/Dh/BvD7oNHfgUXv+cUuFV7UhdJh+X0655rAZ6+k03EnyOZipXaAgyPqamHFHeT/n ysxLpOlbfaiV5cnIbXrziYVSYv6n/eCXtxM9+uCPlOnLMJEELbnfssKoHev82O5Al5SJ oBOYndSCuC4wdOivTuqjbFxM3twDvxTeJhvCZnSgoFpj4xCOxpwsw9zWKj8u1TqtNRdX kOWuAwMwW3MBU/Xw4QKaG9QiGgEzqxsx6s8FNyRbT5s8zxOxPuI/ju0Ovg2E4+0UeGbu 6ulP5ghcnAGWCMsLUXTiSW4UrfqPRBUunwIi51UcaMLzvJoWPtU9xHJ4bGzBVE5aq0Hl zEUg== X-Gm-Message-State: AFeK/H2SoxehWBv9QD/nOWsqfhi/KFlYuwPXBqEWKJ2k6ulJkx079vZH5HnQuFBwGzcpBw== X-Received: by 10.28.10.70 with SMTP id 67mr11648333wmk.76.1489423099890; Mon, 13 Mar 2017 09:38:19 -0700 (PDT) Original-Received: from breton.holly.idiocy.org (ip6-2001-08b0-03f8-8129-4991-ec36-6c8c-8fcf.holly.idiocy.org. [2001:8b0:3f8:8129:4991:ec36:6c8c:8fcf]) by smtp.gmail.com with ESMTPSA id d75sm11952734wmd.25.2017.03.13.09.38.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 Mar 2017 09:38:19 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20170310124117.GA74077@breton.holly.idiocy.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a00:1450:400c:c09::22a X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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" Xref: news.gmane.org gmane.emacs.devel:212988 Archived-At: On Fri, Mar 10, 2017 at 12:41:17PM +0000, Alan Third wrote: > Today I discovered that config.h on my machine has two defines related > to SIGIO: > > #define INTERRUPT_INPUT 1 > #define USABLE_SIGIO 1 > > The NS port doesn’t use SIGIO to signal for input (I think it polls > using ns_select), and if I comment these two defines out I can remove > block_input/unblock_input from various places with no ill effects. It looks like this isn’t right. The NS port works without SIGIO most of the time, but if wait_reading_process_output is called with read_kbd=0 then it goes into an infinite loop. (At least, I think that’s what’s happening.) I was hoping this would work as it would mean I could remove block_input/unblock_input from ns_select, which appears to be the main problem with concurrency. -- Alan Third