RFR (XL): 8202845: Refactor reference processing for improved parallelism

[Thomas Schatzl]

Hi Kim,

On Tue, 2018-06-12 at 17:18 -0400, Kim Barrett wrote:
> > On Jun 12, 2018, at 3:39 PM, Kim Barrett <kim.barrett at oracle.com>
> > wrote:
> > 
> > > On Jun 12, 2018, at 2:19 PM, Thomas Schatzl
> > > <thomas.schatzl at oracle.com> wrote:http://cr.openjdk.java.net/~tsc
> > > hatzl/8202845/webrev.1_to_2 (diff)
> > > http://cr.openjdk.java.net/~tschatzl/8202845/webrev.2 (full)
> > 
> > Looks good.
> 
> One more thing I just noticed.
> 
> src/hotspot/share/gc/shared/referenceProcessor.cpp
>  865   log_reflist("Phase2 Soft after", _discoveredSoftRefs,
> _max_num_queues);
>  866   log_reflist("Phase2 Weak after", _discoveredWeakRefs,
> _max_num_queues);
> 
> at the end of process_soft_weak_final_refs.  At this stage, I think
> there must be no soft or weak references.  Better to assert that than
> log empty sets.
> 
> Similarly at the end of process_phantom_refs.
> 
> And the same is true for process_final_keep_alive.
> 

  fixed in

http://cr.openjdk.java.net/~tschatzl/8202845/webrev.2_to_3 (diff)
and
http://cr.openjdk.java.net/~tschatzl/8202845/webrev.3 (full)

Currently running hs-tier1-3, but I do not expect issues.

Thanks!

Thomas