/// <summary>
/// Putting compressed "packet" into the queue
/// </summary>
/// <param name="filePacket">Piece of compressed file</param>
/// <param name="cancel">Cancellation flag</param>
public void Produce(FilePacketMemoryStream filePacket, out bool cancel)
{
Debug.Assert(filePacket != null, $"{nameof(filePacket)} is null");
var taken = true;
mutex.WaitOne();
try
{
cancel = cancelled;
if (cancelled)
{
return;
}
var eventType = EventsForProducer.SpaceExists;
// If queue is full, begin to await for freeing space
while (!queue.CanEnqueue(filePacket))
{
taken = false;
mutex.ReleaseMutex();
eventType = (EventsForProducer)WaitHandle.WaitAny(eventsForProducer);
mutex.WaitOne();
taken = true;
if ((eventType == EventsForProducer.SpaceAppeared && queue.CanEnqueue(filePacket)) ||
eventType == EventsForProducer.Cancel)
{
break;
}
}
switch (eventType)
{
case EventsForProducer.SpaceExists:
case EventsForProducer.SpaceAppeared:
queue.Enqueue(filePacket);
if (queue.EnqueueAddedFirstAvailableItem) // If it is a first awailable packet in the queue, setting the signal to the consumer
{
eventForFirstPacketInQueue.Set();
}
if (eventType == EventsForProducer.SpaceAppeared && !queue.HaveSpace())
{
eventForNewSpaceInQueue.Reset(); // Resetting our signal of new space appearance
}
break;
case EventsForProducer.Cancel:
cancel = true;
break;
default:
Debug.Write($"Unsupported event type for producer: {Enum.GetName(typeof(EventsForProducer), eventType)}");
break;
}
}
finally
{
if (taken)
{
mutex.ReleaseMutex();
}
}
}
