RFR: Separate Full GC root operations in GC stats

[Roman Kennke]

Am 16.05.2017 um 17:25 schrieb Aleksey Shipilev:
> The only thing that Full GC shares with Init Mark is root operations. Sometimes
> what is clearly the Full GC root operation gets reported under Init Mark,
> confusing the analysis.
>
> Patch:
>   http://cr.openjdk.java.net/~shade/shenandoah/stats-fullgc-roots/webrev.01/
>
> Sample output:
>   http://cr.openjdk.java.net/~shade/shenandoah/stats-fullgc-roots/perf.txt
>
> Testing: hotspot_gc_shenandoah
>
> -Aleksey
>
Ok