Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Date: Wed, 8 Nov 2000 11:05:37 -0500 From: Christopher Faylor To: Cygwin Mailing List Subject: Re: Possible bug with select and master side of pty Message-ID: <20001108110537.I17097@redhat.com> Reply-To: cygwin@sources.redhat.com Mail-Followup-To: Cygwin Mailing List References: <000001c04992$9ff5e8c0$21c9ca95@mow.siemens.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.6i In-Reply-To: <000001c04992$9ff5e8c0$21c9ca95@mow.siemens.ru>; from Andrej.Borsenkow@mow.siemens.ru on Wed, Nov 08, 2000 at 05:46:06PM +0300 It may be a real problem and I appreciate your attempts to track it down but since this seems to be working fine for the vast majority of things which use the pty, I don't think I'll be fixing it any time soon. If someone else would like to take a stab at this (hah?) that would be swell. cgf On Wed, Nov 08, 2000 at 05:46:06PM +0300, Andrej Borsenkow wrote: >From: "Andrej Borsenkow" >To: "Cygwin Mailing List" >Subject: Possible bug with select and master side of pty >Date: Wed, 8 Nov 2000 17:46:06 +0300 > >When polling master side of pseudo tty for reading, select is just using >common function fhandler_pipe::select_read. This does not work when we do >onlcr conversion (actually, always), read buffer of size 1 and are reading NL. >In this case, first select returns readable descriptor (because there is real >data in master-slave pipe) and first read returns CR. Second select does not >think fd is readable because there is no more data in pipe; still, read from >master side would return NL here. > >It _looks_ like adding fhandler_tty_master::select_read that is combination of >fhandler_tty_common::select_read (when need_nl == 0) and >fhandler_null::select_read (when need_nl != 0) should do the job. But I never >programmed in C++ and do not trust myself to fully understand all these method >interaction :( -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe@sourceware.cygnus.com