private static void Enqueue(LinkedList <IBlockingQueueServerWorker> inThreadPoolQueue,
IBlockingQueueServerWorker inWorker)
{
if (inWorker == null)
{
// This is a shutdown signal, put at very front of queue
inThreadPoolQueue.AddFirst(inWorker);
}
else if (inWorker.IsHighPriority)
{
LinkedListNode <IBlockingQueueServerWorker> currentNode = inThreadPoolQueue.First;
while (currentNode != null)
{
if (currentNode.Value != null)
{
if (!currentNode.Value.IsHighPriority)
{
inThreadPoolQueue.AddBefore(currentNode, inWorker);
return;
}
}
currentNode = currentNode.Next;
}
inThreadPoolQueue.AddLast(inWorker);
}
else
{
inThreadPoolQueue.AddLast(inWorker);
}
}
public void Enqueue(IBlockingQueueServerWorker inWorker)
{
lock (m_LockObject)
{
DebugUtils.AssertDebuggerBreak(m_ThreadPoolQueue != null);
DebugUtils.AssertDebuggerBreak(m_ShutdownAutoResetEvent == null);
if (m_ShutdownAutoResetEvent != null)
{
throw new System.InvalidOperationException("Can't enqueue workers while shutting down!");
}
Enqueue(m_ThreadPoolQueue, inWorker);
}
m_ManualResetEvent.Set(); // Wake up threads to handle the new item in the queue
}
private void ThreadLoop()
{
s_ContinueThreadLoop = true;
while (s_ContinueThreadLoop)
{
IBlockingQueueServerWorker worker = Dequeue();
if (worker != null)
{
try
{
worker.DoWork();
}
catch (Exception)
{
}
finally
{
DisposableBase.SafeDispose(ref worker);
}
}
else
{
// Shutdown the thread: remove ourselves from the thread pool, and exit this loop
lock (m_LockObject)
{
bool didRemove = m_ThreadPool.Remove(Thread.CurrentThread);
DebugUtils.AssertDebuggerBreak(didRemove);
if ((m_ThreadPool == null) || (m_ThreadPool.Count == 0))
{
m_ThreadPool = null;
m_ShutdownAutoResetEvent.Set();
}
else
{
Enqueue(m_ThreadPoolQueue, null); // This will cause all remaining threads to exit
m_ManualResetEvent.Set();
}
break;
}
}
}
}
private IBlockingQueueServerWorker Dequeue()
{
while (true)
{
DebugUtils.AssertDebuggerBreak(m_ManualResetEvent != null);
lock (m_LockObject)
{
if (m_IsPaused == 0)
{
if (m_ThreadPoolQueue.Count > 0)
{
IBlockingQueueServerWorker worker = m_ThreadPoolQueue.First.Value;
m_ThreadPoolQueue.RemoveFirst();
if (m_ThreadPoolQueue.Count > 0)
{
m_ManualResetEvent.Set();
}
else
{
m_ManualResetEvent.Reset();
}
return(worker);
}
else
{
m_ManualResetEvent.Reset();
}
}
else
{
m_ManualResetEvent.Reset();
}
}
m_ManualResetEvent.WaitOne(); // Wait for an item to enter the queue
}
}
