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Date: Thu, 8 Jun 2006 08:59:34 -0400 (EDT)
From: Daniel Eischen <deischen@freebsd.org>
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To: Mikhail Teterin <mi+mx@aldan.algebra.com>
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Subject: Re: SIGINFO and pthreads
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On Wed, 7 Jun 2006, Mikhail Teterin wrote:

> Hello!
>
> I have a program, which updates the user with its status upon receiving a
> SIGINFO (like dump, cp, dd, and fsck do). The exact same handler is installed
> for SIGUSR1 (TclX does not know about SIGINFO and I needed to a Tcl script to
> interact with the program too).
>
> When I made the program multi-threaded, it stopped reacting to the SIGINFO. It
> still reacts to the SIGUSR1, but completele ignores SIGINFO now...
>
> If I disable the multi-threading, SIGINFO is processed again...
>
> What's special about SIGINFO and pthreads? Thanks!

Look in /tmp.

In -current, dumping of threads is only enabled when LIBPTHREAD_DEBUG
is set in the environment.

-- 
DE