RFR (S) 8240749: Shenandoah: refactor ShenandoahUtils

[Roman Kennke]

Looks good to me.

Thanks!
Roman

On 3/9/20 2:18 PM, Aleksey Shipilev wrote:
> RFE:
>   https://bugs.openjdk.java.net/browse/JDK-8240749
> 
> Webrev:
>   https://cr.openjdk.java.net/~shade/8240749/webrev.01/
> 
> It mostly hides naked phase_timings()->record... calls with ShenandoahGCWorkerPhase wrapper. But
> also cleans up the code a bit.
> 
> Testing: hotspot_gc_shenandoah
>