public OutputStreamQueueReader <TPayload> CreateReader()
{
lock (this)
{
var seq = _lastSequenceNumber + 1;
var last = _readyQueue.Last;
int count = 0;
while (last != null)
{
var lastPacket = last.Value.Data;
if ((lastPacket.Payload.Properties.Flags & 1) > 0 && lastPacket.SourceId == 0)
{
seq = lastPacket.SequenceNumber;
break;
}
last = last.Previous;
count++;
}
Core.LogInfo($"Adding reader, to be sent {count} additionally");
var result = new OutputStreamQueueReader <TPayload>
{
CurrentSequenceNumber = seq
};
_readers.Add(result);
return(result);
}
}
public void RemoveReader(OutputStreamQueueReader <TPayload> reader)
{
lock (this)
{
_readers.Remove(reader);
Clean();
}
}
public OutputStreamQueueDataReference <TPayload> Dequeue(OutputStreamQueueReader <TPayload> reader, ref bool continueProcessing, out int dropped)
{
lock (this)
{
while (continueProcessing && reader.CurrentSequenceNumber > _lastSequenceNumber)
{
Monitor.Wait(this);
}
reader.BufferSize = _lastSequenceNumber - reader.CurrentSequenceNumber;
if (continueProcessing)
{
if (reader.CurrentSequenceNumber < _readyQueue.First.Value.Data.SequenceNumber)
{
dropped = _readyQueue.First.Value.Data.SequenceNumber - reader.CurrentSequenceNumber;
reader.CurrentSequenceNumber = _readyQueue.First.Value.Data.SequenceNumber + 1;
return(_readyQueue.First.Value.AddReference());
}
else
{
var last = _readyQueue.Last;
while (last.Value.Data.SequenceNumber != reader.CurrentSequenceNumber)
{
last = last.Previous;
}
dropped = 0;
reader.CurrentSequenceNumber++;
var result = last.Value.AddReference();
if (last.Previous == null) // it is first
{
Clean();
}
return(result);
}
}
else
{
dropped = 0;
return(null);
}
}
}