RFR: JDK-8263495: Gather liveness info in the mark phase of G1 full gc [v8]

[Thomas Schatzl]

On Thu, 18 Mar 2021 02:17:10 GMT, Hamlin Li <mli at openjdk.org> wrote:

>> Gather liveness info in the mark phase of G1 full gc.
>> 
>> Per-region liveness info in the mark phase of G1 full gc is for several purposes:
>> 
>> JDK-8262068 needs it to determine whether compaction of a region should be skipped
>> JDK-8258431 for a JFR event that prints live set size estimate
>> 
>> so add this functionality.
>
> Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:
> 
>   better inline suggestions.

Lgtm assuming that Windows build failure is just something specific to Github. Thanks.

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Marked as reviewed by tschatzl (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2966