From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 8547 invoked from network); 4 Jun 2020 16:35:35 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 4 Jun 2020 16:35:35 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id A3B889CB0C; Fri, 5 Jun 2020 02:35:29 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 09F3E9C600; Fri, 5 Jun 2020 02:35:02 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 24D859C600; Fri, 5 Jun 2020 02:34:59 +1000 (AEST) Received: from ppsw-40.csi.cam.ac.uk (ppsw-40.csi.cam.ac.uk [131.111.8.140]) by minnie.tuhs.org (Postfix) with ESMTPS id DF0389C1C8 for ; Fri, 5 Jun 2020 02:34:57 +1000 (AEST) X-Cam-AntiVirus: no malware found X-Cam-ScannerInfo: http://help.uis.cam.ac.uk/email-scanner-virus Received: from grey.csi.cam.ac.uk ([131.111.57.57]:47454) by ppsw-40.csi.cam.ac.uk (ppsw.cam.ac.uk [131.111.8.138]:25) with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1jgspS-000emH-lQ (Exim 4.92.3) (return-path ); Thu, 04 Jun 2020 17:34:54 +0100 Date: Thu, 4 Jun 2020 17:34:54 +0100 From: Tony Finch To: Warner Losh In-Reply-To: Message-ID: References: <20200601145801.GE22016@mcvoy.com> <20200604090436.GJ279@server.rulingia.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Subject: Re: [TUHS] non-blocking IO X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Warner Losh wrote: > > So I could see how having a async open could introduce a lot of hair into > the mix depending on how you do it. Linux io_uring, for example. I would be interested if anyone has a historical perspective on its design :-) Tony. -- f.anthony.n.finch http://dotat.at/ Wight, Portland, Plymouth, Biscay, Fitzroy, Sole, Lundy, Fastnet: North or northwest 4 to 6, occasionally 7 in Biscay. Slight or moderate at first except in Biscay and Fitzroy, otherwise moderate or rough. Showers. Good, occasionally moderate.