Integrated: 8342818: Implement JEP 509: JFR CPU-Time Profiling

[Johannes Bechberger]

On Mon, 19 May 2025 13:02:20 GMT, Johannes Bechberger <jbechberger at openjdk.org> wrote:

> This is the code for the [JEP 509: CPU Time based profiling for JFR](https://openjdk.org/jeps/509).
> 
> Currently tested using [this test suite](https://github.com/parttimenerd/basic-profiler-tests). This runs profiles the [Renaissance](https://renaissance.dev/) benchmark with
> - ... different heap sizes
> - ... different GCs
> - ... different samplers (the standard JFR and the new CPU Time Sampler and both)
> - ... different JFR recording durations
> - ... different chunk-sizes

This pull request has now been integrated.

Changeset: 5b27e9c2
Author:    Johannes Bechberger <jbechberger at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/5b27e9c2df8b386b38b0553d941469cd8aa65c28
Stats:     2306 lines in 41 files changed: 2166 ins; 128 del; 12 mod

8342818: Implement JEP 509: JFR CPU-Time Profiling

Reviewed-by: mgronlun, mdoerr, pchilanomate, apangin, shade

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PR: https://git.openjdk.org/jdk/pull/25302