RFR: JDK-8222227: Shenandoah: Fix Traversal GC weak roots handling in final-traversal pause

[Aleksey Shipilev]

On 4/9/19 10:30 PM, Roman Kennke wrote:
> We currently clean weak roots only when weak-references are processed in
> Traversal GC. This is wrong, because it should be independent whether or
> not it's doing reference-processing.

Not sure I can cross-reference it with the current code. Where do we clean weak roots with Traversal
now?

> Webrev:
> http://cr.openjdk.java.net/~rkennke/JDK-8222227/webrev.02/

Looks good, modulo the thing above.

-Aleksey