cygwin deadlocks due to broken select() when writing to pipes

Dylan Cuthbert dylan@q-games.com
Wed Nov 5 01:52:00 GMT 2003


Ok, removing tty from the CYGWIN variable allows me to log off and shutdown
now.

Why does the tty flag cause this kind of lock-up behaviour?  Is there any
reason I need the tty flag at all? If not I'll just leave it off
permanently.

---------------------------------
Q-Games, Dylan Cuthbert.
http://www.q-games.com


"Dylan Cuthbert" <dylan@q-games.com> wrote in message
news:bo4g20$v72$1@sea.gmane.org...
> CYGWIN=tty is on in the system env vars, shall I switch it off, is this
bad?
> I switched it on before I had this problem mind you, but maybe something
in
> the post-Sept-19th version mixes badly with CYGWIN=tty?
>
> Yes, I understand the "root of the problem" problem (sic.), ie. the
> programming law that there will always be a lot more causes than there are
> distinct effects. ;-)
>
> Anyway, I have this daily recurring problem, which seems to me to be
> duplicatible, yet no-one has tried to duplicate it yet?  This is why I
> repeat the description of my problem wherever I can; in the daft hope
> someone will set up something similar and see if they get the same thing.
> I'm not doing anything complicated, just 2 or 3 rsync's (of half a gig or
> so) in a cronjob every two hours to a linux server.
>
> Regards
>
> ---------------------------------
> Q-Games, Dylan Cuthbert.
> http://www.q-games.com
>
> "Christopher Faylor" <cgf-no-personal-reply-please@cygwin.com> wrote in
> message news:20031102194147.GA15320@redhat.com...
> > On Mon, Nov 03, 2003 at 12:29:53AM +0900, Dylan Cuthbert wrote:
> > >Actually I think I did mention I was running rsync hourly in a cron
job,
> > >that's all I've been mentioning as far as I know.
> >
> > Which has nothing to do with selecting on pipes unless (and even this is
> > pretty remote) you have turned on CYGWIN=tty for your cron for some
> > reason.
> >
> > The point that I am vainly trying to make is that if one person reports
> > a symptom like "hanging" and another person reports a symptom like
> > "hanging" in a completely different scenario while offering a rationale
> > for the behavior, it does not automatically mean that person B has found
> > the root cause for person A's problem unless person A and person B's
> > situations are the same.  There is nothing in your (repeated)
description
> > of your problem to indicate that is the case.
> >
>
>
>



--
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/



More information about the Cygwin mailing list