Enum DisruptorWaitStrategy

    • Enum Constant Detail

      • Blocking

        public static final DisruptorWaitStrategy Blocking
        Blocking strategy that uses a lock and condition variable for EventProcessors waiting on a barrier.

        This strategy can be used when throughput and low-latency are not as important as CPU resource.

      • Sleeping

        public static final DisruptorWaitStrategy Sleeping
        Sleeping strategy that initially spins, then uses a Thread.yield(), and eventually for the minimum number of nanos the OS and JVM will allow while the EventProcessors are waiting on a barrier.

        This strategy is a good compromise between performance and CPU resource. Latency spikes can occur after quiet periods.

      • BusySpin

        public static final DisruptorWaitStrategy BusySpin
        Busy Spin strategy that uses a busy spin loop for EventProcessors waiting on a barrier.

        This strategy will use CPU resource to avoid syscalls which can introduce latency jitter. It is best used when threads can be bound to specific CPU cores.

      • Yielding

        public static final DisruptorWaitStrategy Yielding
        Yielding strategy that uses a Thread.yield() for EventProcessors waiting on a barrier after an initially spinning.

        This strategy is a good compromise between performance and CPU resource without incurring significant latency spikes.

    • Method Detail

      • values

        public static DisruptorWaitStrategy[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (DisruptorWaitStrategy c : DisruptorWaitStrategy.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static DisruptorWaitStrategy valueOf​(String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        IllegalArgumentException - if this enum type has no constant with the specified name
        NullPointerException - if the argument is null
      • getWaitStrategyClass

        public Class<? extends com.lmax.disruptor.WaitStrategy> getWaitStrategyClass()
      • createWaitStrategyInstance

        public com.lmax.disruptor.WaitStrategy createWaitStrategyInstance()
                                                                   throws Exception
        Throws:
        Exception