RFR: 8278598: AlignmentReserve is repeatedly reinitialized

[Albert Mingkun Yang]

On Fri, 20 May 2022 12:54:33 GMT, Thomas Schatzl <tschatzl at openjdk.org> wrote:

> Hi all,
> 
>   can I have reviews for this change that makes initialization of `AlignmentReserve` a one-time thing; after looking at the suggested change and the code I opted to use a static in `CollectedHeap` that can be queried by its users (`PLAB` and `ThreadLocalAllocBuffer`). This seemed nicer to me.
> 
> Testing: gha, running gcbasher with all collectors (notice that there is an assert in the getter that checks for initialization before retrieval, so this should be sufficient)
> 
> Thanks,
>   Thomas

Marked as reviewed by ayang (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/8808