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Date:	Wed, 14 Jan 2004 14:26:37 -0600 (CST)
From:	Brian Ford <ford AT vss DOT fsi DOT com>
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To:	Dave Korn <dk AT artimi DOT com>
cc:	cygwin AT cygwin DOT com
Subject:	RE: Cygwin serial issues
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On Wed, 14 Jan 2004, Dave Korn wrote:
> Brian Ford wrote:
>
> > I only know of the following two issues:
> > 1.) tcflush can hang for a while if the device constantly
> > streams data.
> > 2.) Communications can cease if the device overflows the input buffer.
> >
>   What about non-blocking serial I/O not working, at any rate for me, as I
> described in the thread titled "/dev/com1 definitely broken between 1.5.5-1
> and 20031218" ?
>
> [ http://sources.redhat.com/ml/cygwin/2004-01/msg00168.html ]
>
Ok.  Between the flu, the holidays, and a recent funeral, I'm backed up on
my list reading, so I hadn't seen this yet.

>   I included a very trivial testcase to reproduce the problem - the call to
> read() never returns.  Does it hang up for you too?
>
Yes.  I'll try to look at it when I have time, but expect it to take me a
while to dig out.  Feel free to dig in yourself :), as I see you started
to try.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444

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