Subject: Re: kern/32682: netbsd-3 ptyfs intermittent failure with Matlab
To: Hauke Fath <hf@spg.tu-darmstadt.de>
From: Christos Zoulas <christos@zoulas.com>
List: netbsd-bugs
Date: 07/25/2006 12:00:51
On Jul 25,  2:26pm, hf@spg.tu-darmstadt.de (Hauke Fath) wrote:
-- Subject: Re: kern/32682: netbsd-3 ptyfs intermittent failure with Matlab

| Am 17.07.2006 um 10:58 Uhr -0400 schrieb Christos Zoulas:
| >| But I still see matlab failing to open a /dev/pts/? every now and
| >| then, although the /dev/ptmx && /dev/pts/? way should be the only way
| >| to get a pty on the machine now, so no concurrent access, right?|
| 
| Yet another data point: When another user logs in, with or without 
| running Matlab, this frequently "fixes" the pty problem for the first 
| user.
| 
| >I have a theory. The pty returned by ptmx is not being marked as in
| >use immediately, so it can be potentially returned twice to two different
| >processes. I will check.
| 
| Did you get any further with that theory?

No, I have not and I am swamped between work and moving to a new apartment
(I have no working internet or computers where I've moved yet).
I will be more available in a couple of weeks, sorry.

christos