SpinLoopHintBusySpinWaitStrategy.java

package com.epickrram.workshop.perf.support;

import com.lmax.disruptor.AlertException;
import com.lmax.disruptor.Sequence;
import com.lmax.disruptor.SequenceBarrier;
import com.lmax.disruptor.WaitStrategy;
import org.performancehints.SpinHint;

public final class SpinLoopHintBusySpinWaitStrategy implements WaitStrategy
{
    @Override
    public long waitFor(final long sequence, Sequence cursor, final Sequence dependentSequence, final SequenceBarrier barrier)
            throws AlertException, InterruptedException
    {
        long availableSequence;

        while ((availableSequence = dependentSequence.get()) < sequence)
        {
            SpinHint.spinLoopHint();
            barrier.checkAlert();
        }

        return availableSequence;
    }

    @Override
    public void signalAllWhenBlocking()
    {
    }
}