public void ShouldWaitForWorkCompleteWhereAllWorkersAreBlockedOnRingBuffer()
{
long expectedNumberMessages = 10;
fillRingBuffer(expectedNumberMessages);
var workers = new StubConsumer[3];
for (int i = 0, size = workers.Length; i < size; i++)
{
workers[i] = new StubConsumer(0);
workers[i].Sequence = (expectedNumberMessages - 1);
}
IConsumerBarrier consumerBarrier = ringBuffer.CreateConsumerBarrier(workers);
ThreadStart runnable = () =>
{
StubEntry entry = producerBarrier.NextEntry();
entry.Value = ((int)entry.Sequence);
producerBarrier.Commit(entry);
foreach (StubConsumer stubWorker in workers)
{
stubWorker.Sequence = (entry.Sequence);
}
};
new Thread(runnable).Start();
long expectedWorkSequence = expectedNumberMessages;
long completedWorkSequence = consumerBarrier.WaitFor(expectedNumberMessages);
Assert.IsTrue(completedWorkSequence >= expectedWorkSequence);
}
public void ShouldWaitForWorkCompleteWhereCompleteWorkThresholdIsBehind()
{
long expectedNumberMessages = 10;
fillRingBuffer(expectedNumberMessages);
var entryConsumers = new StubConsumer[3];
for (int i = 0, size = entryConsumers.Length; i < size; i++)
{
entryConsumers[i] = new StubConsumer(0);
entryConsumers[i].Sequence = (expectedNumberMessages - 2);
}
IConsumerBarrier consumerBarrier = ringBuffer.CreateConsumerBarrier(entryConsumers);
ThreadStart runnable = () =>
{
foreach (StubConsumer stubWorker in entryConsumers)
{
stubWorker.Sequence += 1;
}
};
new Thread(runnable).Start();
long expectedWorkSequence = expectedNumberMessages - 1;
long completedWorkSequence = consumerBarrier.WaitFor(expectedWorkSequence);
Assert.IsTrue(completedWorkSequence >= expectedWorkSequence);
}
public List <StubEntry> Call()
{
latch.Set();
consumerBarrier.WaitFor(toWaitForSequence);
List <StubEntry> retval = new List <StubEntry>();
for (long l = initialSequence; l <= toWaitForSequence; l++)
{
retval.Add(consumerBarrier.GetEntry(l));
}
return(retval);
}
/// <summary>
/// It is ok to have another thread rerun this method after a halt().
/// </summary>
public void Run()
{
_running.Data = true;
OnStart();
var nextSequence = Sequence + 1;
while (_running.Data)
{
var waitForResult = _consumerBarrier.WaitFor(nextSequence);
if (!waitForResult.IsAlerted)
{
var availableSequence = waitForResult.AvailableSequence;
while (nextSequence <= availableSequence)
{
T data = _consumerBarrier.GetEntry(nextSequence);
_handler.OnAvailable(nextSequence, data);
nextSequence++;
}
_handler.OnEndOfBatch();
if (_delaySequenceWrite)
{
if (nextSequence > _nextSequencePublish)
{
Sequence = nextSequence - 1; // volatile write
_nextSequencePublish += _sequenceUpdatePeriod;
}
}
else
{
Sequence = nextSequence - 1; // volatile write
}
}
}
OnStop();
}
public void ShouldClaimAndGet()
{
Assert.AreEqual(-1L, ringBuffer.Cursor);
var expectedEntry = new StubEntry(2701);
StubEntry oldEntry = producerBarrier.NextEntry();
oldEntry.copy(expectedEntry);
producerBarrier.Commit(oldEntry);
long sequence = consumerBarrier.WaitFor(0);
Assert.AreEqual(0, sequence);
StubEntry entry = ringBuffer.GetEntry(sequence);
Assert.AreEqual(expectedEntry, entry);
Assert.AreEqual(0L, ringBuffer.Cursor);
}
