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

[Stefan Karlsson]

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