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From: Bruce Perens <bruce@perens.com>
Cc: Maarten.Vergauwen@esat.kuleuven.ac.be, emacs-devel@gnu.org
Subject: Re: <EMACS> Re: emacs21.2 freezes on hp when calling visible-bell
Date: Wed, 27 Mar 2002 21:22:44 -0800	[thread overview]
Message-ID: <20020328052244.GA8846@perens.com> (raw)
In-Reply-To: <200203280456.g2S4uhL09617@aztec.santafe.edu>

> 4. I added lots of fprintf(stderr,...) stuff to the code in xterm.c
>    (function XTflash) and in this way I could determine that emacs was
>    hanging on the line that says: 
> 	    select (0, NULL, NULL, NULL, &timeout);

Select is being used to pause the process with finer granularity than
sleep(). On return, the contents of timeout are _undefined_. Print
timeout.tv_sec and timeout.tv_usec before the call and see if their value
is sensible. It probably gets clobbered after the first call (or the first
few) and sends you into a very long delay, thus the "hang".

Tell me if that's not it, and I'll find an HP-UX pro.

> I am amazed that gettimeofday can hang.

Since this is emacs run under gdb, it could be a ptrace bug.

	Thanks

	Bruce

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  reply	other threads:[~2002-03-28  5:22 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <200203201517.QAA07702@demer.esat.kuleuven.ac.be>
2002-03-21  6:08 ` emacs21.2 freezes on hp when calling visible-bell Eli Zaretskii
     [not found] ` <200203221225.g2MCPoE01638@aztec.santafe.edu>
     [not found]   ` <200203221226.NAA05825@barbar.esat.kuleuven.ac.be>
     [not found]     ` <15520.21118.37291.222389@vaire.esat.kuleuven.ac.be>
2002-03-28  4:56       ` <EMACS> " Richard Stallman
2002-03-28  5:22         ` Bruce Perens [this message]
2002-03-28  9:11           ` Maarten Vergauwen

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