TouchScript.TouchManagerInstance.updateTouches C# (CSharp) Method

        private void updateTouches()
        {
            if (frameStartedInvoker != null) frameStartedInvoker.InvokeHandleExceptions(this, EventArgs.Empty);

            // need to copy buffers since they might get updated during execution
            List<TouchPoint> beganList = null;
            List<int> updatedList = null;
            List<int> endedList = null;
            List<int> cancelledList = null;
            lock (touchLock)
            {
                if (touchesBegan.Count > 0)
                {
                    beganList = touchPointListPool.Get();
                    beganList.AddRange(touchesBegan);
                    touchesBegan.Clear();
                }
                if (touchesUpdated.Count > 0)
                {
                    updatedList = intListPool.Get();
                    updatedList.AddRange(touchesUpdated);
                    touchesUpdated.Clear();
                }
                if (touchesEnded.Count > 0)
                {
                    endedList = intListPool.Get();
                    endedList.AddRange(touchesEnded);
                    touchesEnded.Clear();
                }
                if (touchesCancelled.Count > 0)
                {
                    cancelledList = intListPool.Get();
                    cancelledList.AddRange(touchesCancelled);
                    touchesCancelled.Clear();
                }
            }

            if (beganList != null)
            {
                updateBegan(beganList);
                touchPointListPool.Release(beganList);
            }
            if (updatedList != null)
            {
                updateUpdated(updatedList);
                intListPool.Release(updatedList);
            }
            if (endedList != null)
            {
                updateEnded(endedList);
                intListPool.Release(endedList);
            }
            if (cancelledList != null)
            {
                updateCancelled(cancelledList);
                intListPool.Release(cancelledList);
            }

            if (frameFinishedInvoker != null) frameFinishedInvoker.InvokeHandleExceptions(this, EventArgs.Empty);
        }