RFR: 8272231 G1: Refactor G1CardSet::get_card_set to return G1CardSetHashTableValue* [v2]

[Kim Barrett]

On Mon, 16 Aug 2021 10:25:53 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Hi all,
>> 
>> Please review this change to return G1CardSetHashTableValue* from G1CardSet::get_card_set. Consequently, we do not have to use G1CardSet::get_or_add_card_set in instances where we only need to get the table entry (such as in G1CardSet::transfer_cards_in_howl).
>> 
>> Testing: Tier 1-5.
>
> Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Kim review

Marked as reviewed by kbarrett (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/5072