RFR (S): 8211388: Make OtherRegionsTable independent of the region it is for

[Thomas Schatzl]

Hi all,

  ping for a second review...

Thomas

On Tue, 2018-10-02 at 17:58 +0200, Thomas Schatzl wrote:
> Hi,
> 
>   the OtherRegionsTable is a set of a set of cards that comprises the
> remembered set.
> 
> It stores the HeapRegion it collects cards for to do filtering in the
> FromCardCache. The set of cards should not have knowledge about what
> region it is for, from an abstraction POV it should just be a dumb
> container of cards.
> 
> Move out the HeapRegion id from OtherRegionsTable (the "set of
> cards")
> into the enclosing HeapRegionRememberedSet (managing set of cards),
> separating the FCC functionality from the raw data storage.
> 
> This will make code that assigns a HeapRegionRememberedSet to
> multiple
> regions in the future a bit simpler too.
> 
> CR:
> https://bugs.openjdk.java.net/browse/JDK-8211388
> Webrev:
> http://cr.openjdk.java.net/~tschatzl/8211388/webrev/
> Testing:
> hs-tier1-3
> 
> Thanks,
>   Thomas
> 
>