private bool _QueueGroupActualReadingIndexNextIncrement; //default false
/// <summary>
/// Metoda, ktera vraci polozky z fronty dle sveho algoritmu
/// Prochazi jednotlive QueueGroupItem a z kazde vemze vzdy jeden QueueItem a pristi vyzvednuti GetNextItem bude brat polozku z dalsiho QueueGroupItem
/// </summary>
/// <returns>Nalezeny Item ve fronte nebo NULL pokud uz je fronta prazdna</returns>
private T GetNextItem(out int p_QueueGroupItemsCount)
{
T result = null;
p_QueueGroupItemsCount = 0;
_QueueLock.EnterUpgradeableReadLock();
try
{
while (result == null && _Queue.Count > 0)
{ //mohl jsem v dane group dojit k tomu, ze je prazdna, tu group vyhodim, result = null a musim jit na dalsi group
//najdi index v listu, ktery budes zpracovavat. Po kazdem precteni se musim posunout na dalsi
if (_QueueGroupActualReadingIndexNextIncrement)
{
_QueueGroupActualReadingIndex = (_QueueGroupActualReadingIndex + 1 >= _Queue.Count || _QueueGroupActualReadingIndex < 0) ? 0 : ++_QueueGroupActualReadingIndex;
}
QueueByGroupId group = _Queue.ElementAt(_QueueGroupActualReadingIndex);
//Debug.WriteLine(String.Format("Fronta ma {0} groups. Aktualni group {1} ma {2} zaznamy", _Items.Count, _QueueGroupActualReadingIndex, group.Count));
if (group.TryDequeue(out result))
{
if (ConsumerFindModeItem == QueueConsumerFindModeItem.RotateQueue)
{ //pokud mam rotovat fronty, tak ted jsem neco nasel a proto rotuju na dalsi frontu
_QueueGroupActualReadingIndexNextIncrement = true;
}
p_QueueGroupItemsCount = group.Count;
}
else
{ //v dane group uz nic neni, tak ji vyhazuju
_QueueLock.EnterWriteLock();
try
{
_Queue.RemoveAt(_QueueGroupActualReadingIndex);
}
finally
{
_QueueLock.ExitWriteLock();
}
//Debug.WriteLine(String.Format("Vyhodil jsem group {0}, uz je zpracovana", _QueueGroupActualReadingIndex));
_QueueGroupActualReadingIndexNextIncrement = false;
}
}
}
finally
{
_QueueLock.ExitUpgradeableReadLock();
}
return(result);
}
public void AddItem(T p_Item)
{
if (p_Item != null)
{
_QueueLock.EnterUpgradeableReadLock();
try
{
QueueByGroupId queueSameGroupId = _Queue.Find(q => q.QueueGroupId == p_Item.QueueGroupId);
if (queueSameGroupId != null)
{
//Debug.WriteLine("Queue.AddItem: " + p_Item.ToString());
queueSameGroupId.Enqueue(p_Item);
}
else
{
_QueueLock.EnterWriteLock();
try
{
//Debug.WriteLine("Queue.AddItem: " + p_Item.ToString());
QueueByGroupId queueByGroupId = new QueueByGroupId();
queueByGroupId.Enqueue(p_Item);
_Queue.Add(queueByGroupId);
}
finally
{
_QueueLock.ExitWriteLock();
}
}
}
finally
{
_QueueLock.ExitUpgradeableReadLock();
}
CheckThreadWorking();
}
}