RFR: 8364650: G1: Use InvalidCSetIndex instead of UINT_MAX for "invalid" sentinel value of young_index_in_cset

[Thomas Schatzl]

On Mon, 18 Aug 2025 07:08:20 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Hi all,
>> 
>>   please review this small change to use `InvalidCSetIndex` instead of hardcoded `UINT_MAX` for `G1HeapRegion::_young_index_in_cset`. Just reuse the existing value that is already in use for `_index_in_opt_cset`.
>> 
>> Testing: compilation, gha
>> 
>> Thanks,
>>   Thomas
>
> Marked as reviewed by iwalulya (Reviewer).

Thanks @walulyai @albertnetymk for your reviews

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PR Comment: https://git.openjdk.org/jdk/pull/26651#issuecomment-3209695664