RFR: 8341630: G1: Adopt PartialArrayState to consolidate marking stack in concurrent marking [v2]

Fri Jan 16 15:29:40 UTC 2026

On Fri, 16 Jan 2026 12:17:09 GMT, Ivan Walulya <iwalulya at openjdk.org> wrote:

>> Hi,
>> 
>> Please review this change which adopts the `PartialArrayState` mechanism for G1 concurrent marking.
>> 
>> The `PartialArrayState` mechanism can push multiple continuations to the task queues, so it also solves the single-continuation limitation issue in [JDK-8167480](https://bugs.openjdk.org/browse/JDK-8167480).
>> 
>> Testing: Mach5 Tier 1-3.
>
> Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Extra newline

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/29249#pullrequestreview-3671433050