RFR: 8302154: Hidden classes created by LambdaMetaFactory can't be unloaded [v2]

[Volker Simonis]

On Sat, 18 Feb 2023 01:55:52 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> > Finally, the PR fixes a regression compared to the JDK 11 behavior.
> 
> This is an intended change that improves the C heap memory usage. In addition, the spec of `LambdaMetafactory` has no guarantee of the spinned classes be unloaded independent of it defining loader. This is indeed a behavioral change if `LambdaMetafactory` API is called directly instead of via `invokedynamic`. I can create a CSR to retrofit this behavioral change.

Yes, please. I think that would be helpful.

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PR: https://git.openjdk.org/jdk/pull/12493