RFR: Forcefully update counters when GC cycle is running

[Roman Kennke]

Am 06.11.2017 um 12:51 schrieb Aleksey Shipilev:
> http://cr.openjdk.java.net/~shade/shenandoah/monitoring-force/webrev.01/
>
> Forcefully update counters when GC cycle is running, without waiting for allocations to happen. Also
> do this on uncommit path. This helps monitoring to work in cases when application is fully idle.
>
> Testing: hotspot_gc_shenandoah
>
> Thanks,
> -Aleksey
>
Ok