RFR: 8343249: [Windows] Implement SpinPause [v4]

[Julian Waters]

On Tue, 6 Jan 2026 00:57:46 GMT, David Holmes <dholmes at openjdk.org> wrote:

> I still remain unconvinced this achieves anything useful. Sorry.

Is the concern with the YieldProcessor on x64 or is the ARM64 problematic as well? I reused the stub from Linux for Windows/ARM64, so it shouldn't really be an issue at least.

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PR Comment: https://git.openjdk.org/jdk/pull/21781#issuecomment-3729588996