From:	cgf AT bbc DOT com (Christopher Faylor)
Subject:	Occasional hang with CYGWIN32=tty?
19 Feb 1998 22:00:19 -0800 :
Message-ID:	<Eonu1x.BL1.cygnus.cygwin32.developers@bbc.com>
Reply-To:	cgf AT bbc DOT com
To:	cygwin32-developers AT cygnus DOT com

I run with CYGWIN32=tty set and lately (the last several days) I have
been noticing that when I exit 'zsh' it will occasionally hang in a
manner that is symptomatic of the tty handler thinking that there are
still open fd's on the tty.  There is code that is called by do_exit
which closes down the tty thread if it was created in this process but
this the function will block waiting for the tty use count to == 0.  I
think that something is incrementing the tty use count and not
subsequently decrementing it.

I think I have only noticed this since Ian's last round of tty changes.
Has anyone else noticed this?  Unfortunately, I can't reliably reproduce
this symptom.  Today it happened after I entered zsh, did a 'vi', a
'make' (which produced an error), another 'vi', and a 'logout'.

If I do a 'ps' the zsh process does not show up in the process table.
'ps -f' does display it.
-- 
http://www.bbc.com/	cgf AT bbc DOT com			"Strange how unreal
VMS=>UNIX Solutions	Boston Business Computing	 the real can be."

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