From owner-freebsd-hackers@FreeBSD.ORG  Wed Apr 21 06:18:41 2004
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Date: Wed, 21 Apr 2004 09:18:39 -0400 (EDT)
From: Daniel Eischen <eischen@vigrid.com>
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To: Joe Marcus Clarke <marcus@FreeBSD.org>
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cc: freebsd-hackers@FreeBSD.org
Subject: Re: Help: threading problem in non-threaded applications
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On Wed, 21 Apr 2004, Joe Marcus Clarke wrote:

> On Tue, 2004-04-20 at 17:08, Daniel Eischen wrote:
> > On Tue, 20 Apr 2004, Joe Marcus Clarke wrote:
> > 
> > > I have a problem I'm hoping someone can help me with.  GTK+ 2.4
> > > introduced a new file selection GUI which works just fine in threaded
> > > and non-threaded applications.  However, GNOME 2.6 augmented this dialog
> > > with a dynamically loadable threaded shared object.  The GNOME version
> > > is automatically used by all GTK+ apps when run under a GNOME desktop if
> > > libgnomeui is installed.
> > 
> > Shared libraries shouldn't link with threading libraries
> > unless they actually create threads behind the scenes.
> > Actually, even so, they could force the (unthreaded)
> > applications that link with them to explicitly supply
> > the thread library in the link option.
> 
> And that's the case here.  The underlying libraries are creating and
> using threads.  But what happens when a non-threaded application loads a
> thread library via dlopen() (which is the case here)?  Here's the stack
> trace I see:

In that case you're going to have to link the application
to a threads library.

-- 
Dan Eischen