Windows has an analogue to futexes called WaitOnAddress.[1] Zig's stdlib claims SRW locks are faster than a futex-based implementation.[2] But the futex-based implementation a few lines down that should run fine on Windows since it uses the cross-platform futex abstraction, so it wouldn't be hard to benchmark.

[1]: https://learn.microsoft.com/en-us/windows/win32/api/synchapi...

[2]: https://github.com/ziglang/zig/blob/295b8ca467da36cd1066395e...