private static int positionWithinCycle(long producerCycleClaim, int positionOnCycleMask)
    {
        return (int) (producerCycleClaim & positionOnCycleMask);
    }
Validates a slow producer over-claim throwing {@link IllegalStateException} if the offer on it can't continue.
jctools-experimental/src/main/java/org/jctools/queues/MpscRelaxedArrayQueue.java