RFR (XS) 8232802: Shenandoah: transition between "cset" and "pinned_cset" does not require cancelled gc

[Zhengyu Gu]

Good.

Thanks,

-Zhengyu

On 10/22/19 11:14 AM, Aleksey Shipilev wrote:
> Bug:
>    https://bugs.openjdk.java.net/browse/JDK-8232802
> 
> Fix:
>    https://cr.openjdk.java.net/~shade/8232802/webrev.01/
> 
> The failure caught in testing says that transition from cset to pinned-cset is invalid when GC was
> not cancelled. However, this was only true before JDK-8232575 work. Now, this transition is done in
> sync_pinned_region_status that is supposed to work on all paths. In this case, Degenerated GC
> dropped the cancelled GC flag already, and thus blows up the check.
> 
> The check is excessive and should be removed.
> 
> Testing: hotspot_gc_shenandoah
>