unity 多线程

    public class Loom : MonoBehaviour
    {

        private static Loom _current;

        public static Loom Current
        {
            get
            {
                if (_current == null && Application.isPlaying)
                {

                    var g = GameObject.Find("Loom");
                    if (g == null)
                    {
                        g = new GameObject("Loom");
                    }

                    _current = g.GetComponent<Loom>() ?? g.AddComponent<Loom>();
                }

                return _current;
            }
        }

        private void Awake()
        {
            if (_current != null && _current != this)
            {
                Destroy(gameObject);
            }
            else
            {
                _current = this;
            }
        }

        private List<Action> _actions = new List<Action>();

        public class DelayedQueueItem
        {
            public float time;
            public Action action;
            public string name;
        }

        private List<DelayedQueueItem> _delayed = new List<DelayedQueueItem>();

        public static void QueueOnMainThread(Action action, float time, string name)
        {
            lock (Current._delayed)
            {
                if (Current._delayed.Any(d => d.name == name))
                    return;
                QueueOnMainThread(action, time);
            }
        }

        public static void QueueOnMainThread(Action action, string name)
        {
            QueueOnMainThread(action, 0, name);
        }

        public static void QueueOnMainThread(Action action, float time)
        {
            if (time != 0)
            {
                lock (Current._delayed)
                {
                    Current._delayed.Add(new DelayedQueueItem { time = Time.time + time, action = action });
                }
            }
            else
            {
                lock (Current._actions)
                {
                    Current._actions.Add(action);
                }
            }
        }

        public static void QueueOnMainThread(Action action)
        {
            lock (Current._actions)
            {
                Current._actions.Add(action);
            }
        }

        public static void RunAsync(Action a)
        {
            var t = new Thread(RunAction);
            t.Priority = System.Threading.ThreadPriority.Normal;
            t.Start(a);
        }

        private static void RunAction(object action)
        {
            ((Action)action)();
        }


        private List<Action> toBeRun = new List<Action>();
        private List<DelayedQueueItem> toBeDelayed = new List<DelayedQueueItem>();

        private void Update()
        {
            //Process the non-delayed actions
            lock (_actions)
            {
                toBeRun.AddRange(_actions);
                _actions.Clear();
            }
            foreach (var a in toBeRun)
            {
                try
                {
                    a();
                }
                catch (Exception e)
                {
                    Debug.LogError("Queued Exception: " + e.ToString());
                }
            }
            toBeRun.Clear();
            lock (_delayed)
            {
                toBeDelayed.AddRange(_delayed);
            }
            foreach (var delayed in toBeDelayed.Where(d => d.time <= Time.time))
            {
                lock (_delayed)
                {
                    _delayed.Remove(delayed);
                }
                try
                {
                    delayed.action();
                }
                catch (Exception e)
                {
                    Debug.LogError("Delayed Exception:" + e.ToString());
                }
            }
            toBeDelayed.Clear();

        }
    }