X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Date: Sun, 24 Aug 2008 11:14:28 -0400 From: Christopher Faylor To: cygwin@cygwin.com Subject: Re: SIGPOLL and named pipes Message-ID: <20080824151428.GA20492@ednor.casa.cgf.cx> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.16 (2007-06-09) 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 Sun, Aug 24, 2008 at 01:47:56PM +0200, Thomas Maier-Komor wrote: >I don't get SIGPOLL on Cygwin in a software that runs fine on Linux and >Solaris. Is there a known issue concerning SIGPOLL and named pipes. SIGPOLL (aka SIGIO) is not implemented in Cygwin. >Additionally, there seem to be a bug in Cygwin concerning the >concatenation of data written to a named pipe. If I open the named >pipe a second time with O_WRONLY, to make sure that there is always one >valid open input to the named pipe, the data written to the pipe from >different processes doesn't get concatenated and I have to close and >reopen the named pipe. This is in contrast to the behavior in Linux >and Solaris, and POSIX semantics. Named pipes in Cygwin 1.5.25 are only partially implemented. They should work better in 1.7.x. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/