[Samba] 3.0.23rc1 - Failed to setup RT_SIGNAL_NOTIFY handler

[James Peach]

On Mon, 2006-05-29 at 09:34 +1000, James Peach wrote:
> On Mon, 2006-05-29 at 08:47 +1000, James Peach wrote:
> > On 5/29/06, Volker Lendecke <Volker.Lendecke at sernet.de> wrote:
> > > On Sun, May 28, 2006 at 08:34:57PM +0200, Thomas Bork wrote:
> > > > Please accept this patch for configure.in, removing the function
> > > > introduced in 15508 (Use clock_gettime for profiling timestamps if it is
> > > > available. Use the fastest clock available on uniprocessors.):
> > >
> > > Hmmm. Fully removing it might not be really the right thing.
> > > It might however be good to only link in -lrt (and thus the
> > > depending pthreads) if --with-profiling-data=yes.
> > >
> > > James, what do you think?
> > 
> > Yeh, that seems like the right thing to do.
> 
> OK, now I've *actually* thought about this .... we can't just detect
> clock_gettime if profiling is enabled, because on Linux, that would let
> the user fall into a situation where they had profiling but broken
> oplocks. We should never allow oplocks to be broken.
> 
> Unfortunately, I think that this means that we need a new configure
> macro to test whether linking with librt implicitly links libpthread. If
> it does, we can disable clock_gettime without disabling
> --with-profiling-data.

This was way more horrible than I expected, but the attached patch
implements the checks I describe above.

-- 
James Peach | jpeach at samba.org