public bool Start()
{
lock (this)
{
if (Started == false)
{
clearExisting();
UnitAdded += new EventHandler <ThreadPoolItemEventArg>(threadPoolManager_UnitAdded);
for (int i = 0; i < MaxThreadCount; i++)
{
ThreadPoolItem item = new ThreadPoolItem(this, i);
item.UnitStarted += new EventHandler <ThreadPoolItemEventArg>(item_UnitStarted);
item.UnitFinished += new EventHandler <ThreadPoolItemEventArg>(item_UnitFinished);
PoolItemList.Add(item);
Thread newThread = new Thread(new ThreadStart(item.ExecThreadItem));
lstThread.Add(newThread);
newThread.Start();
item.Status = ThreadPoolItem.PoolItemStatus.Active;
}
TriggerThread = new Thread(new ThreadStart(this.invokeThread));
isTriggerThreadFinish = false;
TriggerThread.Start();
Started = true;
return(true);
}
}
return(false);
}
//Should be Synchronized
public StatusCode AddExecutionUnitIfAvailable(ExecutionUnit unit, bool ReturnIfErrorFound)
{
object[] args = new object[1];
if (ReturnIfErrorFound && ErrorList.Count > 0)
{
args[0] = ErrorList.Count;
return
(new CommonStatusCode(CommonStatusCode.QUEUE_ERROR_FOUND, args, Config, ApplicationId));
}
ThreadPoolItem nextItem = null;
while ((nextItem = AvailablePoolItem) == null)
{
System.Threading.Thread.Sleep(0);
}
if (ReturnIfErrorFound && ErrorList.Count > 0)
{
args[0] = ErrorList.Count;
return
(new CommonStatusCode(CommonStatusCode.QUEUE_ERROR_FOUND, args, Config, ApplicationId));
}
StatusCode retVal = AddExecutionUnit(unit);
return(retVal);
}
private void invokeThread()
{
while (isTriggerThreadFinish == false)
{
resetEvent.WaitOne();
while (queueInvokeRequest.Count > 0)
{
ThreadPoolItem targetItem = null;
lock (queueInvokeRequest)
{
targetItem = queueInvokeRequest.Dequeue();
}
if (targetItem != null)
{
targetItem.Trigger();
}
}
}
}
private void assignExecutionUnit()
{
ThreadPoolItem pool_item = null;
lock (this)
{
if (ExecutionUnitQueue.Count > 0)
{
pool_item = AvailablePoolItem;
if (pool_item != null)
{
lock (pool_item)
{
if (pool_item.ExecutionUnit == null && pool_item.IsAvailable)
{
lock (ExecutionUnitQueue)
{
ExecutionUnit targetUnit = ExecutionUnitQueue.Dequeue();
if (targetUnit != null)
{
pool_item.ExecutionUnit = targetUnit;
}
}
}
}
}
}
}
if (pool_item != null && pool_item.Status == ThreadPoolItem.PoolItemStatus.UnitAttached)
{
lock (queueInvokeRequest)
queueInvokeRequest.Enqueue(pool_item);
resetEvent.Set();
}
else
{
isTransitioning = false;
}
}