RFR: 8373695: G1: Using a value near integer max for ActiveProcessorCount causes fatal crash [v4]

[Thomas Schatzl]

On Wed, 7 Jan 2026 13:13:20 GMT, Jonas Norlinder <jnorlinder at openjdk.org> wrote:

>> G1ConcRefinementThreads default value depends on ParallelGCThreads which in turn may depend on ActiveProcessorCount. These have different ranges that are valid. Patch will ensure argument setup code never try to assign a value larger than what G1ConcRefinementThreads expects.
>
> Jonas Norlinder has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Use API over hardcoded values

Marked as reviewed by tschatzl (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/28831#pullrequestreview-3635459293