JDK-8189737 : Make HeapRegion not derive from Space
Type:Enhancement
Component:hotspot
Sub-Component:gc
Affected Version:10
Priority:P3
Status:Resolved
Resolution:Fixed
Submitted:2017-10-20
Updated:2019-11-14
Resolved:2019-11-08
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Unresolved : Release in which this issue/RFE will be addressed. Resolved: Release in which this issue/RFE has been resolved. Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
Since the G1 Full GC no longer depends on the MarkSweep Full GC the need for HeapRegion to derive from Space could be revisited.
I don't see any big reason why we want to keep this hierarchy.