X-Recipient: archive-cygwin@delorie.com X-SWARE-Spam-Status: No, hits=-0.7 required=5.0 tests=AWL,BAYES_00,DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,KHOP_THREADED,NML_ADSP_CUSTOM_MED,RCVD_NUMERIC_HELO,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org To: cygwin@cygwin.com From: jojelino Subject: Re: Cygwin passes through null writes to other software when redirecting standard input/output (i.e. piping) Date: Sat, 28 Apr 2012 00:11:35 +0900 Lines: 12 Message-ID: References: <020501cd23f2$20f07620$62d16260$@motionview3d.com> <20120427001718.GA10533@ednor.casa.cgf.cx> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Mozilla/5.0 (Windows NT 5.2; rv:15.0) Gecko/20120427 Thunderbird/15.0a1 In-Reply-To: <20120427001718.GA10533@ednor.casa.cgf.cx> X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On 2012-04-27 AM 9:17, Christopher Faylor wrote: > There's no way that Cygwin could know to "skip" a call to WriteFile(). > Cygwin doesn't interpose itself in the middle of a pipe. That would be > truly disastrous. If it somehow looked at every pipe read/write rather > than just allowing I/O to flow from one end to the other, the mailing > list would be even more filled with people complaining that Cygwin is > slow. > Maybe i can measure how much it slowed down after applying the workaround of unworkable runtime of some non-free software. -- Regards. -- 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