[14] RFR (S) 8243478: Shenandoah: avoid implicit worker_id = 0

[Zhengyu Gu]

Looks good.

-Zhengyu

On 5/21/20 2:43 PM, Aleksey Shipilev wrote:
> Original RFE:
>    https://bugs.openjdk.java.net/browse/JDK-8243478
>    https://hg.openjdk.java.net/jdk/jdk/rev/cfc5b66e39c8
> 
> This is a part of bulk backport of enhanced Shenandoah logging to 14u. Again, the context is a bit
> different, because there is no split between weak/strong roots in 14u and closures are named
> differently.
> 
> 14u webrev:
>    https://cr.openjdk.java.net/~shade/8243478/webrev.14u.01/
> 
> Testing: hotspot_gc_shenandoah
>