public void ShouldWaitForWorkCompleteWhereAllWorkersAreBlockedOnRingBuffer() { const long expectedNumberMessages = 10; FillRingBuffer(expectedNumberMessages); var workers = new StubEventProcessor[3]; for (var i = 0; i < workers.Length; i++) { workers[i] = new StubEventProcessor(expectedNumberMessages - 1); } var dependencyBarrier = _ringBuffer.NewBarrier(DisruptorUtil.GetSequencesFor(workers)); Task.Run(() => { var sequence = _ringBuffer.Next(); _ringBuffer[sequence].Value = (int)sequence; _ringBuffer.Publish(sequence); foreach (var stubWorker in workers) { stubWorker.Sequence.SetValue(sequence); } }); const long expectedWorkSequence = expectedNumberMessages; var completedWorkSequence = dependencyBarrier.WaitFor(expectedNumberMessages); Assert.IsTrue(completedWorkSequence >= expectedWorkSequence); }
public void ShouldWaitForWorkCompleteWhereCompleteWorkThresholdIsBehind() { const long expectedNumberMessages = 10; FillRingBuffer(expectedNumberMessages); var eventProcessors = new StubEventProcessor[3]; for (var i = 0; i < eventProcessors.Length; i++) { eventProcessors[i] = new StubEventProcessor(expectedNumberMessages - 2); } var eventProcessorBarrier = _ringBuffer.NewBarrier(DisruptorUtil.GetSequencesFor(eventProcessors)); Task.Factory.StartNew(() => { foreach (var stubWorker in eventProcessors) { stubWorker.Sequence.SetValue(stubWorker.Sequence.Value + 1); } }).Wait(); const long expectedWorkSequence = expectedNumberMessages - 1; var completedWorkSequence = eventProcessorBarrier.WaitFor(expectedWorkSequence); Assert.IsTrue(completedWorkSequence >= expectedWorkSequence); }
/// <summary> /// Set up custom event processors to handle events from the ring buffer. The disruptor will /// automatically start this processors when <see cref="Start"/> is called. /// /// This method can be used as the start of a chain. For example if the processor <code>A</code> must /// process events before handler<code>B</code>: /// <code>dw.HandleEventsWith(A).Then(B);</code> /// </summary> /// <param name="processors">processors the event processors that will process events</param> /// <returns>a <see cref="ValueEventHandlerGroup{T}"/> that can be used to chain dependencies.</returns> public ValueEventHandlerGroup <T> HandleEventsWith(params IEventProcessor[] processors) { foreach (var processor in processors) { _consumerRepository.Add(processor); } var sequences = new ISequence[processors.Length]; for (int i = 0; i < processors.Length; i++) { sequences[i] = processors[i].Sequence; } _ringBuffer.AddGatingSequences(sequences); return(new ValueEventHandlerGroup <T>(this, _consumerRepository, DisruptorUtil.GetSequencesFor(processors))); }
/// <summary> /// Create a group of event processors to be used as a dependency. /// </summary> /// <see cref="After(IValueEventHandler{T}[])"/> /// <param name="processors">processors the event processors, previously set up with <see cref="HandleEventsWith(IValueEventHandler{T}[])"/>, /// that will form the barrier for subsequent handlers or processors.</param> /// <returns>an <see cref="ValueEventHandlerGroup{T}"/> that can be used to setup a <see cref="ISequenceBarrier"/> over the specified event processors.</returns> public ValueEventHandlerGroup <T> After(params IEventProcessor[] processors) { return(new ValueEventHandlerGroup <T>(this, _consumerRepository, DisruptorUtil.GetSequencesFor(processors))); }