RFR: 8321013: Parallel: Refactor ObjectStartArray [v3]

[Stefan Johansson]

On Wed, 6 Dec 2023 10:15:06 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Port the block-offset-table algorithm from Serial/G1 to Parallel.
>> 
>> There is ~20% reduction in young-gc pause, using card_scan.java from https://bugs.openjdk.org/browse/JDK-8310031
>
> Albert Mingkun Yang has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:
> 
>  - Merge branch 'master' into pgc-bot
>  - pgc-bot

Looks good.

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Marked as reviewed by sjohanss (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16884#pullrequestreview-1767775388