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Date: Thu, 03 Aug 2006 21:03:34 +0200
From: Suleiman Souhlal <ssouhlal@FreeBSD.org>
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To: Peter Grehan <grehan@freebsd.org>
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Cc: Daniel Eischen <deischen@freebsd.org>,
	"current@freebsd.org" <current@freebsd.org>,
	Maxim Sobolev <sobomax@sippysoft.com>, freebsd-ppc@freebsd.org
Subject: Re: Looks like threading is b0rken on FreeBSD/powerpc
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Peter Grehan wrote:
>> No, I've no idea.  Nothing's changed that I know of.  I'm surprised
>> that it (powerpc libpthread) works!  I know some supporting MD bits
>> were added to libpthread but never knew that they actually worked :)
> 
> 
>  It only works in system scope. In theory it could work in process 
> scope, though there's no simple way to determine if floating point regs 
> have been used by another thread so you have to unconditionally 
> context-switch fp state.
> 
>  I did a limited amount of testing, mostly with apps and the Sun 
> 'ping-pong' thread test. I think Suleiman also ran up a bunch of larger 
> apps with it (e.g. apache-threads).

I believe I only tried apache-threads with libthr. In fact, I don't 
think I've ever even used libpthread on powerpc.. :-(

-- Suleiman