RFR: 8287788: Implement a better allocator for downcalls [v17]

[Matthias Ernst]

On Thu, 23 Jan 2025 17:14:56 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> test is timing out

I think it's the stress test, the starting Thread sleeps and never gets rescheduled because it's starved out by the others. I can repro. Need to strategically place yields or interrupt the competitors.

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PR Comment: https://git.openjdk.org/jdk/pull/23142#issuecomment-2610482776