RFR: 8371369: Parallel: Relax precondition of PSOldGen::expand_and_allocate [v2]

[Albert Mingkun Yang]

On Fri, 7 Nov 2025 10:24:37 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Use more precise precondition for heap/old-gen expansion; the same precondition is also used in its sole caller.
>> 
>> Edit:
>> Additionally, the call `needs_expand` is updated to accommodate two different paths where it can't be invoked.
>> 
>> Test: tie1-5
>
> Albert Mingkun Yang has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review

Thanks for review.

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PR Comment: https://git.openjdk.org/jdk/pull/28162#issuecomment-3501827232