RFR (XS): 8211853: Avoid additional duplicate work when a reference in the task queue has already been evacuated

[Thomas Schatzl]

Hi Kim, Stefan,

On Thu, 2018-10-18 at 19:09 -0400, Kim Barrett wrote:
> > On Oct 16, 2018, at 9:59 AM, Thomas Schatzl <
> > thomas.schatzl at oracle.com> wrote:
> > 
> > New webrev at 
> > http://cr.openjdk.java.net/~tschatzl/8211853/webrev.0_to_1 (diff)
> > http://cr.openjdk.java.net/~tschatzl/8211853/webrev.1 (full)
> > with the added assert.
> > 
> > Passed hs-tier1-3 as expected.
> > 
> > Thanks,
> >  Thomas
> 
> Looks good.

  thanks for your reviews.

Thomas