From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from conssluserg-06.nifty.com (conssluserg-06.nifty.com [210.131.2.91]) by sourceware.org (Postfix) with ESMTPS id 4969E3857C73 for ; Mon, 15 Nov 2021 16:52:53 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 4969E3857C73 Authentication-Results: sourceware.org; dmarc=fail (p=none dis=none) header.from=nifty.ne.jp Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=nifty.ne.jp Received: from Express5800-S70 (z221123.dynamic.ppp.asahi-net.or.jp [110.4.221.123]) (authenticated) by conssluserg-06.nifty.com with ESMTP id 1AFGqZlX001838 for ; Tue, 16 Nov 2021 01:52:35 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conssluserg-06.nifty.com 1AFGqZlX001838 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.ne.jp; s=dec2015msa; t=1636995155; bh=ug0hFtBA5H2M2JhGgFGuCa6F9TdxWxKSXmKUwpSkAnU=; h=Date:From:To:Subject:In-Reply-To:References:From; b=OlCcLUl37tcM1ngDw9PfzDmzwIJbTyfjtSAUldEjtAMFV/Vf8sXYJxyCIY1SwN5Ts 6oncHyC3v8hNe8oEZa/QwmV/rrahsl7xKMbdACACmPBfMv/V/TG8sXIB8Kq97jbRok wPp4DqKznm7RXIa7a8CogJwKloFio0B3AEf7pFBZhP3NpNGyY3s73jQHTz9KHAcWzo RBVVSkf/aRJxQwlsErYMyFPGyBils9TRa3Ckc0iYxB+rdvfZ9oJZ4G1f04hSiYxh6g AgRxdRBNOflt9aq3kKpj1RqVr8wp1UYIZXHF+2Y58fRiPIbAh9j4u7WxqBPG+MzyHR k9YEl3XWNkgUQ== X-Nifty-SrcIP: [110.4.221.123] Date: Tue, 16 Nov 2021 01:52:39 +0900 From: Takashi Yano To: cygwin-developers@cygwin.com Subject: Re: cygwin 3.3.x: another problem that may be related to pipes Message-Id: <20211116015239.57d5f981ffdb3196039258da@nifty.ne.jp> In-Reply-To: <9a7bdf86-0721-870f-b7ea-00d958967c98@cornell.edu> References: <115203324.649908.1636923059546.ref@mail.yahoo.com> <115203324.649908.1636923059546@mail.yahoo.com> <20211115171811.844dce9cce2b4d13262d64f2@nifty.ne.jp> <20211115235021.0f0f64b1b0e2a7bd6d16be80@nifty.ne.jp> <9a7bdf86-0721-870f-b7ea-00d958967c98@cornell.edu> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.30; i686-pc-mingw32) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-5.4 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin-developers@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin core component developers mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 15 Nov 2021 16:52:55 -0000 On Mon, 15 Nov 2021 11:37:30 -0500 Ken Brown wrote: > On 11/15/2021 11:08 AM, Corinna Vinschen wrote: > > The idea was to do change to synchronous pipes only for 3.4. I have a > > bit of headaches to change the pipes to synchronous as bug fix on the > > 3.3 branch. Your first ideas might be better there... > > I agree. I'd rather fix the bugs with asynchronous pipes on the 3.3 branch and > only switch to synchronous pipes for 3.4. I also agree with you. So, currently we have three options. 1) Call CancelIo() immediately after STATUS_PENDING like my patch. 2) Wait for pipe handle after STATUS_PENDING for nonblocking mode like Ken's patch. 3) Create evt event even for nonblocking mode as Corinna mentioned. Which is the best solution, do you think? -- Takashi Yano