RFR: 8351444: Shenandoah: Class Unloading may encounter recycled oops [v3]

[Roman Kennke]

On Mon, 10 Mar 2025 21:25:06 GMT, William Kemper <wkemper at openjdk.org> wrote:

>> Unloading classes may require a walk of unreachable oops. For this reason, it is not safe to recycle memory before class unloading is complete. This complements existing code to prevent mutators from recycling trash regions while weak roots is in progress.
>
> William Kemper has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Trim extraneous comment

Looks ok to me. Thank you!

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Marked as reviewed by rkennke (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/23951#pullrequestreview-2679682909