Definitely should do that as well.

john

On Tue, Mar 19, 2013 at 4:04 PM, Brian Geffon <[email protected]> wrote:

> Thanks John!
>
> Someone else mentioned that we might need to force the head_p to be 16 byte
> aligned, what are your thoughts?
>
> -  } head_p;
> +  } __attribute__ ((aligned (16))) head_p;
>
>
> Thanks.
> Brian
>
> On Tue, Mar 19, 2013 at 3:47 PM, John Plevyak <[email protected]> wrote:
>
> > I believe the problem is with INK_QUEUE_LD which is not atomic:
> >
> > diff --git a/lib/ts/ink_queue.h b/lib/ts/ink_queue.h
> > index 6ac9945..20fbf9a 100644
> > --- a/lib/ts/ink_queue.h
> > +++ b/lib/ts/ink_queue.h
> > @@ -72,7 +72,7 @@ extern "C"
> >  #endif
> >
> >  #if TS_HAS_128BIT_CAS
> > -#define INK_QUEUE_LD(dst,src) *((__int128_t*)&(dst)) =
> > *((__int128_t*)&(src))
> > +#define INK_QUEUE_LD(dst,src) *(__int128_t*)&(dst) =
> > __sync_fetch_and_add((__int128_t*)&(src), 0)
> >  #else
> >  #define INK_QUEUE_LD(dst,src) INK_QUEUE_LD64(dst,src)
> >  #endif
> >
> > This fixes the problem.
> >
> > On Mon, Mar 18, 2013 at 9:31 PM, Brian Geffon <[email protected]> wrote:
> >
> > > Hey, I'm looking into the failing freelist tests using the precise64
> > > vagrant box. If I can't figure it out tonight I'll just disable the
> check
> > > in configure.ac to get things stable again for the time being. If
> anyone
> > > else has some time to help out with this, I'd really appreciate it.
> > >
> > > Brian
> > >
> > > On Mon, Mar 18, 2013 at 9:49 AM, James Peach <[email protected]>
> wrote:
> > >
> > > > Hi Brian,
> > > >
> > > > I finally fixed the autoconf tests for TS_HAS_128BIT_CAS.
> Unfortunately
> > > > test_freelist fails on all the platforms that I have access to. I'm
> > > > assuming that on your platforms it succeeds, so maybe there's
> something
> > > > about the version of gcc you are using that makes it work.
> > > >
> > > > Since I don't really know which platforms this is working for, what
> do
> > > you
> > > > think about reverting this?
> > > >
> > > > J
> > >
> >
>

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