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Date:      Sat, 8 Apr 2006 13:42:36 +0800
From:      David Xu <davidxu@freebsd.org>
To:        freebsd-current@freebsd.org
Cc:        Csaba Henk <csaba-ml@creo.hu>, Daniel Eischen <deischen@freebsd.org>
Subject:   Re: switching threading libraries
Message-ID:  <200604081342.36295.davidxu@freebsd.org>
In-Reply-To: <20060407140809.GZ1323@beastie.creo.hu>
References:  <slrne3ck4t.18h.csaba@beastie.creo.hu> <Pine.GSO.4.43.0604070910310.15406-100000@sea.ntplx.net> <20060407140809.GZ1323@beastie.creo.hu>

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On Friday 07 April 2006 22:08, Csaba Henk wrote:
> On Fri, Apr 07, 2006 at 09:10:56AM -0400, Daniel Eischen wrote:
> > Only between libthr and libpthread.  libc_r doesn't have symbol
> > versioning.
>
> That's sad -- given, as noted elsewhere, libc_r is the best suitable
> for tracing.
>
> Will it remain like this or can we expect a symver'd libc_r
> in due time?
>
> Regards,
> Csaba

libc_r does not have debugger can be used, libthr and libpthread
do have. libthr can use ktrace to print thread ID, libthr can use top
to observe a thread blocked on what event,  I don't believe  libc_r is
best tracable.

David Xu



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