RFR: Implement JEP 509: JFR CPU-Time Profiling [v45]

Mon May 5 13:29:56 UTC 2025

On Mon, 5 May 2025 13:17:28 GMT, Zhengyu Gu <zgu at openjdk.org> wrote:

>> Which is not array based and therefore not usable in signal handlers.
>
> I see. If it is only used in signal handlers, does it really need to be multi-threaded?

The `LockFreeStack` doesn't say how its elements are allocated, so you can allocate your elements into an array.

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PR Review Comment: https://git.openjdk.org/jdk/pull/20752#discussion_r2073432511