From: ian AT cygnus DOT com (Ian Lance Taylor) Subject: Re: rxvt and latest Ian's changes. 2 Feb 1998 10:43:36 -0800 Message-ID: <199802021842.NAA11902.cygnus.cygwin32.developers@subrogation.cygnus.com> References: Reply-To: gnu-win32-developers AT cygnus DOT com To: cygwin32-developers AT cygnus DOT com From: cgf AT bbc DOT com (Christopher Faylor) Date: Mon, 2 Feb 1998 18:36:56 GMT Could the process which has the slave open signal EOF in some other way, perhaps, like by releasing a mutex? Not easily. The problem is that the master will call read, which will turn into a call to ReadFile. That will hang reading from a pipe. When all instances of the write end of the pipe are closed, the read will return correctly. Using a mutex is hard because Windows, in its wisdom, does not permit asynchronous reads from a pipe. So as far as I know this would require creating a thread to hang reading from the pipe, and having the main code wait for either the thread or for the EOF mutex. It might be possible to make this work, but what a pain just to do a read. We would still have to keep track of the number of slaves ptys which were open, to know whether we should presume an EOF or not. Ian