RFR: 8364531: G1: Factor out liveness tracing code [v3]

[Thomas Schatzl]

On Mon, 4 Aug 2025 08:22:28 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Thomas Schatzl has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   * more refactoring
>
> src/hotspot/share/gc/g1/g1ConcurrentMark.cpp line 3166:
> 
>> 3164:   _total_remset_bytes += g1h->young_regions_cset_group()->card_set()->mem_size();
>> 3165: 
>> 3166:   G1CollectionSetCandidates * candidates = g1h->policy()->candidates();
> 
> Why both spaces around `*`?

Typo? Will fix.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26591#discussion_r2250953461