RFR: 8366809: JFR: Use factory for aggregator functions

[Markus Grönlund]

On Wed, 3 Sep 2025 14:27:26 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> Could I have a review of a PR that replaces the selection of the aggregator function with a factory, so that the selection only needs to happen once per column instead of for every row?
> 
> Testing: jdk/jdk/jfr + manual inspection 'jfr view' output
> 
> Thanks
> Erik

Marked as reviewed by mgronlun (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27072#pullrequestreview-3258175851