RFR: 8225227: ZGC: Be exact in what load barrier to use in ZHeapInspector

[Per Liden]

Thanks Stefan!

/Per

On 6/10/19 10:08 AM, Stefan Karlsson wrote:
> Looks good.
> 
> StefanK
> 
> On 2019-06-04 10:53, Per Liden wrote:
>> After JDK-8224675 (which has not been pushed yet), the ZHeapItarator 
>> can be more exact in what load barrier is used on roots, and the load 
>> barrier can be skipped all together on strong non-concurrent roots.
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8225227
>> Webrev: http://cr.openjdk.java.net/~pliden/8225227/webrev.0
>>
>> /Per