RFR: 8371465: Parallel: Revise asserts around heap expansion [v2]

[Thomas Schatzl]

On Thu, 13 Nov 2025 13:16:48 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Revise heap/old-gen expansion asserts/comments to cover two paths:
>> 
>> 1. startup: no gc can occur
>> 2. after-startup: during safepoint, by vm-thread.
>> 
>> Test: tier1-4
>
> Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review

okay

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Marked as reviewed by tschatzl (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/28266#pullrequestreview-3459968485