X-Recipient: archive-cygwin AT delorie DOT com X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com Subject: Re: Setting termios VMIN > 0 and VTIME > 0 on non blocking file To: "cygwin AT cygwin DOT com" References: <9e4c6428-59de-df07-9e33-44ba95d5497f AT gmail DOT com> <5be321d9-10c2-0853-b716-2abd10a4db3a AT SystematicSw DOT ab DOT ca> From: Norton Allen Message-ID: Date: Wed, 11 Mar 2020 21:01:34 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <5be321d9-10c2-0853-b716-2abd10a4db3a@SystematicSw.ab.ca> Content-Language: en-US X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Cygwin mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: cygwin-bounces AT cygwin DOT com Sender: "Cygwin" On 3/11/2020 5:55 PM, Brian Inglis wrote: > VMIN > 0 || VTIME > 0 implies blocking; O_NONBLOCK implies SIGIO delivery; see: While I agree with everything else you said there, I don't believe either of these are true, unless by 'implies' you mean that's how you usually do it. I have done a lot of work with non-zero VMIN and/or VTIME in non-blocking situations, and I've done non-blocking with different approaches to delivery. -- ============================================================= Norton Allen (he/him/his) Software Engineer Harvard University School of Engineering and Applied Sciences 12 Oxford St., Link Bldg. (Office 282) Cambridge, MA 02138 Phone: (617) 998-5553 ============================================================= -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple