RFR: Incremental-update option

[Aleksey Shipilev]

On 3/27/20 7:54 PM, Roman Kennke wrote:
> The traversal mode uses incremental-update-style traversal. It might be
> useful to pair that with our normal-mode operation (3-phase). The
> following patch is a prototype of this, that I would like to give some
> testing in shenandoah/jdk:
> 
> http://cr.openjdk.java.net/~rkennke/iu/webrev.00/
> 
> It adds a new mode called ShenandoahIUMode -XX:ShenandoahGCMode=iu and
> wires the default ShenandoahGCMode to iu to give it maximum exposure in
> testing pipelines.
> 
> Testing: hotspot_gc_shenandoah is all clean :-) Let's give it some more
> runs on our CIs.
> 
> Ok to push to shenandoah/jdk ?

Looks dirty, but fine for sh/jdk.

-- 
Thanks,
-Aleksey