/// <summary>
        /// 延迟卸载,每帧检查
        /// </summary>
        void DeferUnloadUpdate()
        {
            JWObjList <string> unloaded = null;
            var itor = _unloadingBundle.GetEnumerator();

            while (itor.MoveNext())
            {
                if (itor.Current.Value.Frame < 0)
                {
                    if (unloaded == null)
                    {
                        unloaded = new JWObjList <string>();
                    }

                    unloaded.Add(itor.Current.Key);
                    DeferUnloadData.Recycle(itor.Current.Value);
                }
                else
                {
                    itor.Current.Value.Frame--;
                }
            }

            for (int i = 0; unloaded != null && i < unloaded.Count; i++)
            {
                UnloadImmediately(unloaded[i]);
                _unloadingBundle.Remove(unloaded[i]);
            }
        }
 public static void Recycle(DeferUnloadData data)
 {
     if (data != null)
     {
         data.Reset();
         _pool.Add(data);
     }
 }
        public static DeferUnloadData Get()
        {
            DeferUnloadData data = null;

            if (_pool.Count > 0)
            {
                data = _pool[_pool.Count - 1];
                _pool.RemoveAt(_pool.Count - 1);
            }
            else
            {
                data = new DeferUnloadData();
            }

            return(data);
        }
        /// <summary>
        /// bundle资源已加载完
        /// </summary>
        /// <param name="pi"></param>
        public void OnAssetLoaded(BundlePackInfo pi)
        {
            if (pi == null)
            {
                return;
            }

            // 立即卸载 (延帧)
            if (pi.Life == EBundleLife.Immediate)
            {
                if (!_unloadingBundle.ContainsKey(pi.Path))
                {
                    _unloadingBundle.Add(pi.Path, DeferUnloadData.Get());
                }
                else
                {
                    JW.Common.Log.LogE("Immediately unload bundle when it's already in unloading queue. bundle:{0}", pi.Path);
                }
            }
        }