RFR: Missing cancelled concgc check results assertion failure

[Aleksey Shipilev]

On 01/26/2018 06:54 PM, Zhengyu Gu wrote:
> Diving to weak reference work without checking cancelled concgc, results assertion failure of not
> emptied task queues.
> 
> http://cr.openjdk.java.net/~zgu/shenandoah/tq_cancelled_gc/hs_err.txt
> 
> Webrev:
> http://cr.openjdk.java.net/~zgu/shenandoah/tq_cancelled_gc/webrev.00/

Sounds reasonable to me.

-Aleksey