RFR: Handle metadata induced GC

[Aleksey Shipilev]

On 10/29/2018 02:54 PM, Aleksey Shipilev wrote:
> On 10/29/2018 02:53 PM, Zhengyu Gu wrote:
>> Updated: http://cr.openjdk.java.net/~zgu/shenandoah/metadata_gc/webrev.02/
> 
> OK.

Actually, not OK. After this change, SPECjbb dives into never-ending cycle of Full GC right away.

-Aleksey