X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-0.6 required=5.0 tests=AWL,BAYES_40,DKIM_SIGNED,DKIM_VALID,RCVD_IN_DNSWL_NONE,TW_CG,UNPARSEABLE_RELAY X-Spam-Check-By: sourceware.org X-Yahoo-SMTP: jenXL62swBAWhMTL3wnej93oaS0ClBQOAKs8jbEbx_o- Date: Tue, 1 Nov 2011 23:24:30 -0400 From: Christopher Faylor To: cygwin AT cygwin DOT com Subject: Re: General question on the status of named pipes Message-ID: <20111102032430.GD3646@ednor.casa.cgf.cx> Reply-To: cygwin AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com References: <4EA5A683 DOT 5000007 AT redhat DOT com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4EA5A683.5000007@redhat.com> User-Agent: Mutt/1.5.20 (2009-06-14) Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On Mon, Oct 24, 2011 at 11:55:15AM -0600, Eric Blake wrote: >On 10/24/2011 06:51 AM, Nathan Thern wrote: >> I have several scripts that use named pipes for the purpose of >> processing sound files. I use them on both linux and cygwin. After the >> switch to cygwin1.7 I converted most of them to the use of tempfiles. >> Nevertheless, when encountering old scripts in my archives or when >> trying to create efficient new scripts I find myself wishing named >> pipes still worked; they are one of the more powerful unix-ish >> paradigms. >> >> What's the status/priority of getting named pipes to work in 1.7? And, >> just for curiosity's sake, what was the fundamental change in 1.7 that >> caused them to stop working? -- They worked great in 1.5. > >Actually, named pipes have _never_ worked, at least according to the >full set of POSIX rules. It's just that some releases had code that >limped along better than in other releases for the particular use cases >you happened to throw at them. cgf is working miracles to get it as far >along as he has, but it's a very tough job to emulate POSIX fifos on top >of windows. No guarantees but the most recent snapshot should work better. There is still at least one glaring problem that I'm aware of but it may work better than 1.7.9. cgf -- 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