RFR: 8335925: Serial: Move allocation API from Generation to subclasses [v3]

[Guoxiong Li]

On Fri, 26 Jul 2024 10:18:08 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

>> Trivial moving methods from parent class to subclasses. The unused second arg is also removed along the way. The API names are descriptive enough so that the accompanying comments are dropped as well.
>
> 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 five additional commits since the last revision:
> 
>  - review
>  - Merge branch 'master' into s1-gen-alloc
>  - review
>  - Merge branch 'master' into s1-gen-alloc
>  - s1-gen-alloc

Marked as reviewed by gli (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/20084#pullrequestreview-2204431593