DirectBufferAllocTest fails after replacement of Thread.sleep() with Thread.onSpinWait()

[Сергей Цыпанов]

> The takeaway from this exercise is that loops with sleeps can't always be replaced by loops that busy-wait.
> Functionally the logic is the same, but you can't just ignore the concurrency aspects.

Thanks for explanation!

> Which indicates yielding is having a similar effect to sleeping - though I would expect it to be less pronounced.

May I ask one last question about this: in general case when we don't care about particular wait time (like in j.n.Bits.reserveMemory())
should I prefer Thread.yield() over both Thread.sleep() and Thread.onSpinWait() providing that Thread.sleep() is expensive
and Thread.onSpinWait() might cause undesirable side effects?

Regards,
Sergey Tsypanov