Pathfinding.ThreadControlQueue.PopNoBlock C# (CSharp) Method

		public Path PopNoBlock (bool blockedBefore) {
			
			Monitor.Enter(lockObj);
			try {
				if (terminate) {
					blockedReceivers++;
					throw new QueueTerminationException();
				}
				
				if (head == null) {
					Starving ();
				}
				if (blocked || starving) {
					if (!blockedBefore) {
						blockedReceivers++;
						
						if (terminate) throw new QueueTerminationException();
						
						if (blockedReceivers == numReceivers) {
							//Last alive
						} else if (blockedReceivers > numReceivers) {
							throw new System.InvalidOperationException ("More receivers are blocked than specified in constructor ("+blockedReceivers + " > " + numReceivers+")");
						}
					}
					return null;
				} else if (blockedBefore) {
					blockedReceivers--;
				}
				
				Path p = head;
				
				if (head.next == null) {
					tail = null;
				}
				head = head.next;
				return p;
			} finally {
				Monitor.Exit (lockObj);
			}
		}
	}

        public void TickNonMultithreaded()
        {
            // Process paths
            if (threadCoroutine != null)
            {
                try {
                    threadCoroutine.MoveNext();
                } catch (System.Exception e) {
                    //This will kill pathfinding
                    threadCoroutine = null;

                    // Queue termination exceptions should be ignored, they are supposed to kill the thread
                    if (!(e is ThreadControlQueue.QueueTerminationException))
                    {
                        Debug.LogException(e);
                        Debug.LogError("Unhandled exception during pathfinding. Terminating.");
                        queue.TerminateReceivers();

                        // This will throw an exception supposed to kill the thread
                        try {
                            queue.PopNoBlock(false);
                        } catch {}
                    }
                }
            }
        }