Update CHANGELOG.md

增加CustomPlayMode运行模式

Assets/YooAsset/CHANGELOG.md

@@ -2,6 +2,55 @@
 
 All notable changes to this package will be documented in this file.
 
+## [2.3.2-preview] - 2025-02-27
+
+### Fixed
+
+- (2.3.1) 修复小游戏平台下载器不生效的问题。
+- (#480) 修复了Unity工程打包导出时的报错。
+
+### Added
+
+- 下载器新增参数：recursiveDownload
+
+  ```csharp
+  /// <summary>
+  /// 创建资源下载器，用于下载指定的资源依赖的资源包文件
+  /// </summary>
+  /// <param name="recursiveDownload">下载资源对象所属资源包内所有资源对象依赖的资源包
+  public ResourceDownloaderOperation CreateBundleDownloader()
+  ```
+
+- 新增CustomPlayMode模式
+
+  ```csharp
+  /// <summary>
+  /// 自定义运行模式的初始化参数
+  /// </summary>
+  public class CustomPlayModeParameters : InitializeParameters
+  {
+      /// <summary>
+      /// 文件系统初始化参数列表
+      /// 注意：列表最后一个元素作为主文件系统！
+      /// </summary>
+      public List<FileSystemParameters> FileSystemParameterList;
+  }
+  ```
+
+## [2.3.1-preview] - 2025-02-25
+
+**资源加载依赖计算方式还原为了1.5x版本的模式，只加载资源对象实际依赖的资源包，不再以资源对象所在资源包的依赖关系为加载标准**。
+
+### Improvements
+
+- 优化OperationSystem的更新机制，异步加载的耗时降低了50%。
+- 优化了Debugger窗口的显示页面，BundleView页面增加资源包的引用列表。
+- 优化了Reporter窗口的显示页面。
+
+### Fixed
+
+- 修复了怀旧依赖模式下，TAG传染不正确的问题。
+
 ## [2.3.0-preview] - 2025-02-19
 
 ### Improvements

Assets/YooAsset/Editor/AssetBundleDebugger/AssetBundleDebuggerWindow.cs

@@ -272,7 +272,7 @@ namespace YooAsset.Editor
                     packageData.ProviderInfos.Sort();
                     foreach (var providerInfo in packageData.ProviderInfos)
                     {
-                        providerInfo.DependBundleInfos.Sort();
+                        providerInfo.DependBundles.Sort();
                     }
                 }
 

Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerAssetListViewer.cs

@@ -13,6 +13,7 @@ namespace YooAsset.Editor
     {
         private class ProviderTableData : DefaultTableData
         {
+            public DebugPackageData PackageData;
             public DebugProviderInfo ProviderInfo;
         }
         private class DependTableData : DefaultTableData
@@ -205,7 +206,7 @@ namespace YooAsset.Editor
                 {
                     StyleColor textColor;
                     var providerTableData = data as ProviderTableData;
-                    if(providerTableData.ProviderInfo.Status == EOperationStatus.Failed.ToString())
+                    if (providerTableData.ProviderInfo.Status == EOperationStatus.Failed.ToString())
                         textColor = new StyleColor(Color.yellow);
                     else
                         textColor = new StyleColor(Color.white);
@@ -309,6 +310,7 @@ namespace YooAsset.Editor
                 foreach (var providerInfo in packageData.ProviderInfos)
                 {
                     var rowData = new ProviderTableData();
+                    rowData.PackageData = packageData;
                     rowData.ProviderInfo = providerInfo;
                     rowData.AddAssetPathCell("PackageName", packageData.PackageName);
                     rowData.AddStringValueCell("AssetPath", providerInfo.AssetPath);
@@ -368,12 +370,14 @@ namespace YooAsset.Editor
         private void OnProviderTableViewSelectionChanged(ITableData data)
         {
             var providerTableData = data as ProviderTableData;
+            DebugPackageData packageData = providerTableData.PackageData;
             DebugProviderInfo providerInfo = providerTableData.ProviderInfo;
 
             // 填充依赖数据
-            var sourceDatas = new List<ITableData>(providerInfo.DependBundleInfos.Count);
-            foreach (var dependBundleInfo in providerInfo.DependBundleInfos)
+            var sourceDatas = new List<ITableData>(providerInfo.DependBundles.Count);
+            foreach (var bundleName in providerInfo.DependBundles)
             {
+                var dependBundleInfo = packageData.GetBundleInfo(bundleName);
                 var rowData = new DependTableData();
                 rowData.BundleInfo = dependBundleInfo;
                 rowData.AddStringValueCell("DependBundles", dependBundleInfo.BundleName);

Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerBundleListViewer.cs

@@ -13,19 +13,24 @@ namespace YooAsset.Editor
     {
         private class BundleTableData : DefaultTableData
         {
-            public string PackageName;
+            public DebugPackageData PackageData;
             public DebugBundleInfo BundleInfo;
         }
         private class UsingTableData : DefaultTableData
         {
             public DebugProviderInfo ProviderInfo;
         }
+        private class ReferenceTableData : DefaultTableData
+        {
+            public DebugBundleInfo BundleInfo;
+        }
 
         private VisualTreeAsset _visualAsset;
         private TemplateContainer _root;
 
         private TableView _bundleTableView;
         private TableView _usingTableView;
+        private TableView _referenceTableView;
 
         private DebugReport _debugReport;
         private List<ITableData> _sourceDatas;
@@ -44,20 +49,25 @@ namespace YooAsset.Editor
             _root.style.flexGrow = 1f;
 
             // 资源包列表
-            _bundleTableView = _root.Q<TableView>("TopTableView");
+            _bundleTableView = _root.Q<TableView>("BundleTableView");
             _bundleTableView.SelectionChangedEvent = OnBundleTableViewSelectionChanged;
             CreateBundleTableViewColumns();
 
             // 使用列表
-            _usingTableView = _root.Q<TableView>("BottomTableView");
+            _usingTableView = _root.Q<TableView>("UsingTableView");
             CreateUsingTableViewColumns();
 
+            // 引用列表
+            _referenceTableView = _root.Q<TableView>("ReferenceTableView");
+            CreateReferenceTableViewColumns();
+
 #if UNITY_2020_3_OR_NEWER
             var topGroup = _root.Q<VisualElement>("TopGroup");
             var bottomGroup = _root.Q<VisualElement>("BottomGroup");
             topGroup.style.minHeight = 100;
             bottomGroup.style.minHeight = 100f;
             PanelSplitView.SplitVerticalPanel(_root, topGroup, bottomGroup);
+            PanelSplitView.SplitVerticalPanel(bottomGroup, _usingTableView, _referenceTableView);
 #endif
         }
         private void CreateBundleTableViewColumns()
@@ -269,6 +279,79 @@ namespace YooAsset.Editor
                 _usingTableView.AddColumn(column);
             }
         }
+        private void CreateReferenceTableViewColumns()
+        {
+            // BundleName
+            {
+                var columnStyle = new ColumnStyle(600, 500, 1000);
+                columnStyle.Stretchable = true;
+                columnStyle.Searchable = true;
+                columnStyle.Sortable = true;
+                var column = new TableColumn("ReferenceBundle", "Reference Bundle", columnStyle);
+                column.MakeCell = () =>
+                {
+                    var label = new Label();
+                    label.style.unityTextAlign = TextAnchor.MiddleLeft;
+                    return label;
+                };
+                column.BindCell = (VisualElement element, ITableData data, ITableCell cell) =>
+                {
+                    var infoLabel = element as Label;
+                    infoLabel.text = (string)cell.GetDisplayObject();
+                };
+                _referenceTableView.AddColumn(column);
+            }
+
+            // RefCount
+            {
+                var columnStyle = new ColumnStyle(100);
+                columnStyle.Stretchable = false;
+                columnStyle.Searchable = false;
+                columnStyle.Sortable = true;
+                var column = new TableColumn("RefCount", "Ref Count", columnStyle);
+                column.MakeCell = () =>
+                {
+                    var label = new Label();
+                    label.style.unityTextAlign = TextAnchor.MiddleLeft;
+                    return label;
+                };
+                column.BindCell = (VisualElement element, ITableData data, ITableCell cell) =>
+                {
+                    var infoLabel = element as Label;
+                    infoLabel.text = (string)cell.GetDisplayObject();
+                };
+                _referenceTableView.AddColumn(column);
+            }
+
+            // Status
+            {
+                var columnStyle = new ColumnStyle(100);
+                columnStyle.Stretchable = false;
+                columnStyle.Searchable = false;
+                columnStyle.Sortable = true;
+                var column = new TableColumn("Status", "Status", columnStyle);
+                column.MakeCell = () =>
+                {
+                    var label = new Label();
+                    label.style.unityTextAlign = TextAnchor.MiddleLeft;
+                    return label;
+                };
+                column.BindCell = (VisualElement element, ITableData data, ITableCell cell) =>
+                {
+                    StyleColor textColor;
+                    var feferenceTableData = data as ReferenceTableData;
+                    if (feferenceTableData.BundleInfo.Status == EOperationStatus.Failed)
+                        textColor = new StyleColor(Color.yellow);
+                    else
+                        textColor = new StyleColor(Color.white);
+
+                    var infoLabel = element as Label;
+                    infoLabel.text = (string)cell.GetDisplayObject();
+                    infoLabel.style.color = textColor;
+                };
+                _referenceTableView.AddColumn(column);
+            }
+        }
 
         /// <summary>
         /// 填充页面数据
@@ -280,30 +363,22 @@ namespace YooAsset.Editor
             // 清空旧数据
             _bundleTableView.ClearAll(false, true);
             _usingTableView.ClearAll(false, true);
+            _referenceTableView.ClearAll(false, true);
 
             // 填充数据源
             _sourceDatas = new List<ITableData>(1000);
             foreach (var packageData in debugReport.PackageDatas)
             {
-                var tempDic = new HashSet<string>();
-                foreach (var providerInfo in packageData.ProviderInfos)
+                foreach (var bundleInfo in packageData.BundleInfos)
                 {
-                    foreach (var bundleInfo in providerInfo.DependBundleInfos)
-                    {
-                        if (tempDic.Contains(bundleInfo.BundleName) == false)
-                        {
-                            tempDic.Add(bundleInfo.BundleName);
-
-                            var rowData = new BundleTableData();
-                            rowData.PackageName = packageData.PackageName;
-                            rowData.BundleInfo = bundleInfo;
-                            rowData.AddAssetPathCell("PackageName", packageData.PackageName);
-                            rowData.AddStringValueCell("BundleName", bundleInfo.BundleName);
-                            rowData.AddLongValueCell("RefCount", bundleInfo.RefCount);
-                            rowData.AddStringValueCell("Status", bundleInfo.Status.ToString());
-                            _sourceDatas.Add(rowData);
-                        }
-                    }
+                    var rowData = new BundleTableData();
+                    rowData.PackageData = packageData;
+                    rowData.BundleInfo = bundleInfo;
+                    rowData.AddAssetPathCell("PackageName", packageData.PackageName);
+                    rowData.AddStringValueCell("BundleName", bundleInfo.BundleName);
+                    rowData.AddLongValueCell("RefCount", bundleInfo.RefCount);
+                    rowData.AddStringValueCell("Status", bundleInfo.Status.ToString());
+                    _sourceDatas.Add(rowData);
                 }
             }
             _bundleTableView.itemsSource = _sourceDatas;
@@ -322,6 +397,8 @@ namespace YooAsset.Editor
             _bundleTableView.RebuildView();
             _usingTableView.ClearAll(false, true);
             _usingTableView.RebuildView();
+            _referenceTableView.ClearAll(false, true);
+            _referenceTableView.RebuildView();
         }
 
         /// <summary>
@@ -355,19 +432,17 @@ namespace YooAsset.Editor
         private void OnBundleTableViewSelectionChanged(ITableData data)
         {
             var bundleTableData = data as BundleTableData;
+            var packageData = bundleTableData.PackageData;
+            var selectBundleInfo = bundleTableData.BundleInfo;
 
-            // 填充依赖数据
-            var sourceDatas = new List<ITableData>(1000);
-            foreach (var packageData in _debugReport.PackageDatas)
+            // 填充UsingTableView
             {
-                if (packageData.PackageName != bundleTableData.PackageName)
-                    continue;
-
+                var sourceDatas = new List<ITableData>(1000);
                 foreach (var providerInfo in packageData.ProviderInfos)
                 {
-                    foreach (var bundleInfo in providerInfo.DependBundleInfos)
+                    foreach (var dependBundleName in providerInfo.DependBundles)
                     {
-                        if (bundleInfo.BundleName == bundleTableData.BundleInfo.BundleName)
+                        if (dependBundleName == selectBundleInfo.BundleName)
                         {
                             var rowData = new UsingTableData();
                             rowData.ProviderInfo = providerInfo;
@@ -381,9 +456,26 @@ namespace YooAsset.Editor
                         }
                     }
                 }
+                _usingTableView.itemsSource = sourceDatas;
+                _usingTableView.RebuildView();
+            }
+
+            // 填充ReferenceTableView
+            {
+                var sourceDatas = new List<ITableData>(1000);
+                foreach (string referenceBundleName in selectBundleInfo.ReferenceBundles)
+                {
+                    var bundleInfo = packageData.GetBundleInfo(referenceBundleName);
+                    var rowData = new ReferenceTableData();
+                    rowData.BundleInfo = bundleInfo;
+                    rowData.AddStringValueCell("BundleName", bundleInfo.BundleName);
+                    rowData.AddLongValueCell("RefCount", bundleInfo.RefCount);
+                    rowData.AddStringValueCell("Status", bundleInfo.Status.ToString());
+                    sourceDatas.Add(rowData);
+                }
+                _referenceTableView.itemsSource = sourceDatas;
+                _referenceTableView.RebuildView();
             }
-            _usingTableView.itemsSource = sourceDatas;
-            _usingTableView.RebuildView();
         }
     }
 }

Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerBundleListViewer.uxml

@@ -1,8 +1,9 @@
 <ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" editor-extension-mode="False">
     <ui:VisualElement name="TopGroup" style="flex-grow: 1; border-left-width: 1px; border-right-width: 1px; border-top-width: 1px; border-bottom-width: 1px; border-left-color: rgb(0, 0, 0); border-right-color: rgb(0, 0, 0); border-top-color: rgb(0, 0, 0); border-bottom-color: rgb(0, 0, 0); margin-left: 0; margin-right: 0; margin-top: 2px; margin-bottom: 1px; display: flex;">
-        <YooAsset.Editor.TableView name="TopTableView" />
+        <YooAsset.Editor.TableView name="BundleTableView" />
     </ui:VisualElement>
-    <ui:VisualElement name="BottomGroup" style="height: 200px; border-left-width: 1px; border-right-width: 1px; border-top-width: 1px; border-bottom-width: 1px; border-left-color: rgb(0, 0, 0); border-right-color: rgb(0, 0, 0); border-top-color: rgb(0, 0, 0); border-bottom-color: rgb(0, 0, 0); margin-left: 0; margin-right: 0; margin-top: 1px; margin-bottom: 1px; display: flex;">
-        <YooAsset.Editor.TableView name="BottomTableView" />
+    <ui:VisualElement name="BottomGroup" style="height: 400px; border-left-width: 1px; border-right-width: 1px; border-top-width: 1px; border-bottom-width: 1px; border-left-color: rgb(0, 0, 0); border-right-color: rgb(0, 0, 0); border-top-color: rgb(0, 0, 0); border-bottom-color: rgb(0, 0, 0); margin-left: 0; margin-right: 0; margin-top: 1px; margin-bottom: 1px; display: flex;">
+        <YooAsset.Editor.TableView name="UsingTableView" />
+        <YooAsset.Editor.TableView name="ReferenceTableView" />
     </ui:VisualElement>
 </ui:UXML>

Assets/YooAsset/Runtime/DiagnosticSystem/DebugBundleInfo.cs

@@ -22,6 +22,11 @@ namespace YooAsset
         /// </summary>
         public EOperationStatus Status;
 
+        /// <summary>
+        /// 谁引用了该资源包
+        /// </summary>
+        public List<string> ReferenceBundles;
+
         public int CompareTo(DebugBundleInfo other)
         {
             return Compare(this, other);

Assets/YooAsset/Runtime/DiagnosticSystem/DebugPackageData.cs

@@ -17,5 +17,44 @@ namespace YooAsset
         /// 调试数据列表
         /// </summary>
         public List<DebugProviderInfo> ProviderInfos = new List<DebugProviderInfo>(1000);
+
+        /// <summary>
+        /// 调试数据列表
+        /// </summary>
+        public List<DebugBundleInfo> BundleInfos = new List<DebugBundleInfo>(1000);
+
+
+        [NonSerialized]
+        public Dictionary<string, DebugBundleInfo> BundleInfoDic = new Dictionary<string, DebugBundleInfo>();
+        private bool _isParse = false;
+
+        /// <summary>
+        /// 获取调试资源包信息类
+        /// </summary>
+        public DebugBundleInfo GetBundleInfo(string bundleName)
+        {
+            // 解析数据
+            if (_isParse == false)
+            {
+                _isParse = true;
+                foreach (var bundleInfo in BundleInfos)
+                {
+                    if (BundleInfoDic.ContainsKey(bundleInfo.BundleName) == false)
+                    {
+                        BundleInfoDic.Add(bundleInfo.BundleName, bundleInfo);
+                    }
+                }
+            }
+
+            if (BundleInfoDic.TryGetValue(bundleName, out DebugBundleInfo value))
+            {
+                return value;
+            }
+            else
+            {
+                UnityEngine.Debug.LogError($"Can not found {nameof(DebugBundleInfo)} : {bundleName}");
+                return null;
+            }
+        }
     }
 }

Assets/YooAsset/Runtime/DiagnosticSystem/DebugProviderInfo.cs

@@ -45,7 +45,7 @@ namespace YooAsset
         /// <summary>
         /// 依赖的资源包列表
         /// </summary>
-        public List<DebugBundleInfo> DependBundleInfos;
+        public List<string> DependBundles;
 
         public int CompareTo(DebugProviderInfo other)
         {

Assets/YooAsset/Runtime/DiagnosticSystem/DebugReport.cs

@@ -22,7 +22,6 @@ namespace YooAsset
         /// </summary>
         public List<DebugPackageData> PackageDatas = new List<DebugPackageData>(10);
 
-
         /// <summary>
         /// 序列化
         /// </summary>

Assets/YooAsset/Runtime/DownloadSystem/Operation/Internal/UnityWebDataRequestOperation.cs

@@ -16,11 +16,11 @@ namespace YooAsset
         internal UnityWebDataRequestOperation(string url, int timeout = 60) : base(url, timeout)
         {
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CreateRequest;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -59,7 +59,7 @@ namespace YooAsset
                 DisposeRequest();
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeRequest();

Assets/YooAsset/Runtime/DownloadSystem/Operation/Internal/UnityWebFileRequestOperation.cs

@@ -12,11 +12,11 @@ namespace YooAsset
         {
             _fileSavePath = fileSavePath;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CreateRequest;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -54,7 +54,7 @@ namespace YooAsset
                 DisposeRequest();
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeRequest();

Assets/YooAsset/Runtime/DownloadSystem/Operation/Internal/UnityWebTextRequestOperation.cs

@@ -16,11 +16,11 @@ namespace YooAsset
         internal UnityWebTextRequestOperation(string url, int timeout = 60) : base(url, timeout)
         {
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CreateRequest;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -59,7 +59,7 @@ namespace YooAsset
                 DisposeRequest();
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeRequest();

Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/AssetBundleResult.cs

@@ -48,25 +48,21 @@ namespace YooAsset
         public override FSLoadAssetOperation LoadAssetAsync(AssetInfo assetInfo)
         {
             var operation = new AssetBundleLoadAssetOperation(_packageBundle, _assetBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadAllAssetsOperation LoadAllAssetsAsync(AssetInfo assetInfo)
         {
             var operation = new AssetBundleLoadAllAssetsOperation(_packageBundle, _assetBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadSubAssetsOperation LoadSubAssetsAsync(AssetInfo assetInfo)
         {
             var operation = new AssetBundleLoadSubAssetsOperation(_packageBundle, _assetBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadSceneOperation LoadSceneOperation(AssetInfo assetInfo, LoadSceneParameters loadParams, bool suspendLoad)
         {
             var operation = new AssetBundleLoadSceneOperation(assetInfo, loadParams, suspendLoad);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
     }

Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/Operation/AssetBundleLoadAllAssetsOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _assetBundle = assetBundle;
             _assetInfo = assetInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CheckBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/Operation/AssetBundleLoadAssetOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _assetBundle = assetBundle;
             _assetInfo = assetInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CheckBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/Operation/AssetBundleLoadSceneOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _loadParams = loadParams;
             _suspendLoad = suspendLoad;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadScene;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -107,7 +107,7 @@ namespace YooAsset
         internal override void InternalWaitForAsyncComplete()
         {
             //TODO 场景加载不支持异步转同步，为了支持同步加载方法需要实现该方法！
-            InternalOnUpdate();
+            InternalUpdate();
         }
         public override void UnSuspendLoad()
         {

Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/Operation/AssetBundleLoadSubAssetsOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _assetBundle = assetBundle;
             _assetInfo = assetInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CheckBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/Operation/RawBundleLoadAllAssetsOperation.cs

@@ -3,12 +3,12 @@ namespace YooAsset
 {
     internal class RawBundleLoadAllAssetsOperation : FSLoadAllAssetsOperation
     {
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Error = $"{nameof(RawBundleLoadAllAssetsOperation)} not support load all assets !";
             Status = EOperationStatus.Failed;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/Operation/RawBundleLoadAssetOperation.cs

@@ -3,12 +3,12 @@ namespace YooAsset
 {
     internal class RawBundleLoadAssetOperation : FSLoadAssetOperation
     {
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Error = $"{nameof(RawBundleLoadAssetOperation)} not support load asset !";
             Status = EOperationStatus.Failed;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/Operation/RawBundleLoadSceneOperation.cs

@@ -3,12 +3,12 @@ namespace YooAsset
 {
     internal class RawBundleLoadSceneOperation : FSLoadSceneOperation
     {
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Error = $"{nameof(RawBundleLoadSceneOperation)} not support load scene !";
             Status = EOperationStatus.Failed;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
         public override void UnSuspendLoad()

Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/Operation/RawBundleLoadSubAssetsOperation.cs

@@ -3,12 +3,12 @@ namespace YooAsset
 {
     internal class RawBundleLoadSubAssetsOperation : FSLoadSubAssetsOperation
     {
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Error = $"{nameof(RawBundleLoadSubAssetsOperation)} not support load sub assets !";
             Status = EOperationStatus.Failed;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/RawBundleResult.cs

@@ -32,25 +32,21 @@ namespace YooAsset
         public override FSLoadAssetOperation LoadAssetAsync(AssetInfo assetInfo)
         {
             var operation = new RawBundleLoadAssetOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadAllAssetsOperation LoadAllAssetsAsync(AssetInfo assetInfo)
         {
             var operation = new RawBundleLoadAllAssetsOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadSubAssetsOperation LoadSubAssetsAsync(AssetInfo assetInfo)
         {
             var operation = new RawBundleLoadSubAssetsOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadSceneOperation LoadSceneOperation(AssetInfo assetInfo, LoadSceneParameters loadParams, bool suspendLoad)
         {
             var operation = new RawBundleLoadSceneOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
     }

Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/Operation/VirtualBundleLoadAllAssetsOperation.cs

@@ -22,7 +22,7 @@ namespace YooAsset
             _packageBundle = packageBundle;
             _assetInfo = assetInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
 #if UNITY_EDITOR
             _steps = ESteps.CheckBundle;
@@ -32,7 +32,7 @@ namespace YooAsset
             Status = EOperationStatus.Failed;            
 #endif
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
 #if UNITY_EDITOR
             if (_steps == ESteps.None || _steps == ESteps.Done)

Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/Operation/VirtualBundleLoadAssetOperation.cs

@@ -21,7 +21,7 @@ namespace YooAsset
             _packageBundle = packageBundle;
             _assetInfo = assetInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
 #if UNITY_EDITOR
             _steps = ESteps.CheckBundle;
@@ -31,7 +31,7 @@ namespace YooAsset
             Status = EOperationStatus.Failed;            
 #endif
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
 #if UNITY_EDITOR
             if (_steps == ESteps.None || _steps == ESteps.Done)

Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/Operation/VirtualBundleLoadSceneOperation.cs

@@ -25,7 +25,7 @@ namespace YooAsset
             _loadParams = loadParams;
             _suspendLoad = suspendLoad;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
 #if UNITY_EDITOR
             _steps = ESteps.LoadScene;
@@ -35,7 +35,7 @@ namespace YooAsset
             Status = EOperationStatus.Failed;            
 #endif
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
 #if UNITY_EDITOR
             if (_steps == ESteps.None || _steps == ESteps.Done)
@@ -113,7 +113,7 @@ namespace YooAsset
         internal override void InternalWaitForAsyncComplete()
         {
             //TODO 场景加载不支持异步转同步，为了支持同步加载方法需要实现该方法！
-            InternalOnUpdate();
+            InternalUpdate();
         }
         public override void UnSuspendLoad()
         {

Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/Operation/VirtualBundleLoadSubAssetsOperation.cs

@@ -22,7 +22,7 @@ namespace YooAsset
             _packageBundle = packageBundle;
             _assetInfo = assetInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
 #if UNITY_EDITOR
             _steps = ESteps.CheckBundle;
@@ -32,7 +32,7 @@ namespace YooAsset
             Status = EOperationStatus.Failed;            
 #endif
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
 #if UNITY_EDITOR
             if (_steps == ESteps.None || _steps == ESteps.Done)

Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/VirtualBundleResult.cs

@@ -32,25 +32,21 @@ namespace YooAsset
         public override FSLoadAssetOperation LoadAssetAsync(AssetInfo assetInfo)
         {
             var operation = new VirtualBundleLoadAssetOperation(_packageBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadAllAssetsOperation LoadAllAssetsAsync(AssetInfo assetInfo)
         {
             var operation = new VirtualBundleLoadAllAssetsOperation(_packageBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadSubAssetsOperation LoadSubAssetsAsync(AssetInfo assetInfo)
         {
             var operation = new VirtualBundleLoadSubAssetsOperation(_packageBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
         public override FSLoadSceneOperation LoadSceneOperation(AssetInfo assetInfo, LoadSceneParameters loadParams, bool suspendLoad)
         {
             var operation = new VirtualBundleLoadSceneOperation(assetInfo, loadParams, suspendLoad);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
             return operation;
         }
     }

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/DefaultBuildinFileSystem.cs

@@ -92,19 +92,16 @@ namespace YooAsset
         public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
         {
             var operation = new DBFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
         {
             var operation = new DBFSLoadPackageManifestOperation(this, packageVersion);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
         {
             var operation = new DBFSRequestPackageVersionOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
@@ -127,20 +124,17 @@ namespace YooAsset
             if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
             {
                 var operation = new DBFSLoadAssetBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else if (bundle.BundleType == (int)EBuildBundleType.RawBundle)
             {
                 var operation = new DBFSLoadRawBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else
             {
                 string error = $"{nameof(DefaultBuildinFileSystem)} not support load bundle type : {bundle.BundleType}";
                 var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
         }
@@ -194,9 +188,8 @@ namespace YooAsset
             _unpackFileSystem.SetParameter(FileSystemParametersDefine.DECRYPTION_SERVICES, DecryptionServices);
             _unpackFileSystem.OnCreate(packageName, null);
         }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
         {
-            _unpackFileSystem.OnUpdate();
         }
 
         public virtual bool Belong(PackageBundle bundle)
@@ -346,10 +339,13 @@ namespace YooAsset
                 return false;
 
 #if UNITY_ANDROID
-            if (bundle.BundleType == (int)EBuildBundleType.RawBundle || bundle.Encrypted)
+            if (bundle.Encrypted)
                 return true;
-            else
-                return false;
+
+            if (bundle.BundleType == (int)EBuildBundleType.RawBundle)
+                return true;
+
+            return false;
 #else
             return false;
 #endif

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/DefaultBuildinFileSystemBuild.cs

@@ -18,9 +18,8 @@ namespace YooAsset
             YooLogger.Log("Begin to create catalog file !");
 
             string savePath = YooAssetSettingsData.GetYooResourcesFullPath();
-            DirectoryInfo saveDirectory = new DirectoryInfo(savePath);
-            if (saveDirectory.Exists)
-                saveDirectory.Delete(true);
+            if (UnityEditor.AssetDatabase.DeleteAsset(savePath))
+                UnityEditor.AssetDatabase.Refresh();
 
             string rootPath = YooAssetSettingsData.GetYooDefaultBuildinRoot();
             DirectoryInfo rootDirectory = new DirectoryInfo(rootPath);

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSInitializeOperation.cs

@@ -24,7 +24,7 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
 #if UNITY_WEBGL
             _steps = ESteps.Done;
@@ -37,7 +37,7 @@ namespace YooAsset
                 _steps = ESteps.InitUnpackFileSystem;
 #endif
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -47,9 +47,11 @@ namespace YooAsset
                 if (_copyBuildinPackageManifestOp == null)
                 {
                     _copyBuildinPackageManifestOp = new CopyBuildinPackageManifestOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _copyBuildinPackageManifestOp);
+                    _copyBuildinPackageManifestOp.StartOperation();
+                    AddChildOperation(_copyBuildinPackageManifestOp);
                 }
 
+                _copyBuildinPackageManifestOp.UpdateOperation();
                 if (_copyBuildinPackageManifestOp.IsDone == false)
                     return;
 
@@ -68,8 +70,13 @@ namespace YooAsset
             if (_steps == ESteps.InitUnpackFileSystem)
             {
                 if (_initUnpackFIleSystemOp == null)
+                {
                     _initUnpackFIleSystemOp = _fileSystem.InitializeUpackFileSystem();
+                    _initUnpackFIleSystemOp.StartOperation();
+                    AddChildOperation(_initUnpackFIleSystemOp);
+                }
 
+                _initUnpackFIleSystemOp.UpdateOperation();
                 Progress = _initUnpackFIleSystemOp.Progress;
                 if (_initUnpackFIleSystemOp.IsDone == false)
                     return;
@@ -113,9 +120,11 @@ namespace YooAsset
 #endif
 
                     _loadCatalogFileOp = new LoadBuildinCatalogFileOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCatalogFileOp);
+                    _loadCatalogFileOp.StartOperation();
+                    AddChildOperation(_loadCatalogFileOp);
                 }
 
+                _loadCatalogFileOp.UpdateOperation();
                 if (_loadCatalogFileOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadBundleOperation.cs

@@ -29,13 +29,13 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             DownloadProgress = 1f;
             DownloadedBytes = _bundle.FileSize;
             _steps = ESteps.LoadAssetBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -139,9 +139,6 @@ namespace YooAsset
                 }
             }
         }
-        public override void AbortDownloadOperation()
-        {
-        }
     }
 
     /// <summary>
@@ -166,13 +163,13 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             DownloadProgress = 1f;
             DownloadedBytes = _bundle.FileSize;
             _steps = ESteps.LoadBuildinRawBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -206,8 +203,5 @@ namespace YooAsset
                 }
             }
         }
-        public override void AbortDownloadOperation()
-        {
-        }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadPackageManifestOperation.cs

@@ -23,11 +23,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _packageVersion = packageVersion;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestBuildinPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -37,9 +37,11 @@ namespace YooAsset
                 if (_requestBuildinPackageHashOp == null)
                 {
                     _requestBuildinPackageHashOp = new RequestBuildinPackageHashOperation(_fileSystem, _packageVersion);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestBuildinPackageHashOp);
+                    _requestBuildinPackageHashOp.StartOperation();
+                    AddChildOperation(_requestBuildinPackageHashOp);
                 }
 
+                _requestBuildinPackageHashOp.UpdateOperation();
                 if (_requestBuildinPackageHashOp.IsDone == false)
                     return;
 
@@ -61,9 +63,11 @@ namespace YooAsset
                 {
                     string packageHash = _requestBuildinPackageHashOp.PackageHash;
                     _loadBuildinPackageManifestOp = new LoadBuildinPackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadBuildinPackageManifestOp);
+                    _loadBuildinPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadBuildinPackageManifestOp);
                 }
 
+                _loadBuildinPackageManifestOp.UpdateOperation();
                 if (_loadBuildinPackageManifestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSRequestPackageVersionOperation.cs

@@ -19,11 +19,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -33,9 +33,11 @@ namespace YooAsset
                 if (_requestBuildinPackageVersionOp == null)
                 {
                     _requestBuildinPackageVersionOp = new RequestBuildinPackageVersionOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestBuildinPackageVersionOp);
+                    _requestBuildinPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestBuildinPackageVersionOp);
                 }
 
+                _requestBuildinPackageVersionOp.UpdateOperation();
                 if (_requestBuildinPackageVersionOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/CopyBuildinPackageManifestOperation.cs

@@ -29,11 +29,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -43,9 +43,11 @@ namespace YooAsset
                 if (_requestBuildinPackageVersionOp == null)
                 {
                     _requestBuildinPackageVersionOp = new RequestBuildinPackageVersionOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestBuildinPackageVersionOp);
+                    _requestBuildinPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestBuildinPackageVersionOp);
                 }
 
+                _requestBuildinPackageVersionOp.UpdateOperation();
                 if (_requestBuildinPackageVersionOp.IsDone == false)
                     return;
 
@@ -82,9 +84,11 @@ namespace YooAsset
                     string destPath = GetCopyPackageHashDestPath(_buildinPackageVersion);
                     string url = DownloadSystemHelper.ConvertToWWWPath(sourcePath);
                     _hashFileRequestOp = new UnityWebFileRequestOperation(url, destPath);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _hashFileRequestOp);
+                    _hashFileRequestOp.StartOperation();
+                    AddChildOperation(_hashFileRequestOp);
                 }
 
+                _hashFileRequestOp.UpdateOperation();
                 if (_hashFileRequestOp.IsDone == false)
                     return;
 
@@ -121,9 +125,11 @@ namespace YooAsset
                     string destPath = GetCopyPackageManifestDestPath(_buildinPackageVersion);
                     string url = DownloadSystemHelper.ConvertToWWWPath(sourcePath);
                     _manifestFileRequestOp = new UnityWebFileRequestOperation(url, destPath);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _manifestFileRequestOp);
+                    _manifestFileRequestOp.StartOperation();
+                    AddChildOperation(_manifestFileRequestOp);
                 }
 
+                _manifestFileRequestOp.UpdateOperation();
                 if (_manifestFileRequestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/LoadBuildinCatalogFileOperation.cs

@@ -19,11 +19,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadCatalog;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/LoadBuildinPackageManifestOperation.cs

@@ -31,11 +31,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _packageHash = packageHash;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestFileData;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -47,9 +47,11 @@ namespace YooAsset
                     string filePath = _fileSystem.GetBuildinPackageManifestFilePath(_packageVersion);
                     string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                     _webDataRequestOp = new UnityWebDataRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webDataRequestOp);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
                 }
 
+                _webDataRequestOp.UpdateOperation();
                 if (_webDataRequestOp.IsDone == false)
                     return;
 
@@ -85,9 +87,11 @@ namespace YooAsset
                 if (_deserializer == null)
                 {
                     _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                 }
 
+                _deserializer.UpdateOperation();
                 Progress = _deserializer.Progress;
                 if (_deserializer.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/RequestBuildinPackageHashOperation.cs

@@ -26,11 +26,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _packageVersion = packageVersion;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -42,9 +42,11 @@ namespace YooAsset
                     string filePath = _fileSystem.GetBuildinPackageHashFilePath(_packageVersion);
                     string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 if (_webTextRequestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/RequestBuildinPackageVersionOperation.cs

@@ -24,11 +24,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -40,9 +40,11 @@ namespace YooAsset
                     string filePath = _fileSystem.GetBuildinPackageVersionFilePath();
                     string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 if (_webTextRequestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/DefaultCacheFileSystem.cs

@@ -15,13 +15,18 @@ namespace YooAsset
         protected readonly Dictionary<string, string> _bundleDataFilePathMapping = new Dictionary<string, string>(10000);
         protected readonly Dictionary<string, string> _bundleInfoFilePathMapping = new Dictionary<string, string>(10000);
         protected readonly Dictionary<string, string> _tempFilePathMapping = new Dictionary<string, string>(10000);
-        protected DefaultCacheDownloadCenter _downloadCenter;
 
         protected string _packageRoot;
         protected string _tempFilesRoot;
         protected string _cacheBundleFilesRoot;
         protected string _cacheManifestFilesRoot;
 
+        /// <summary>
+        /// 下载中心
+        /// 说明：当异步操作任务终止的时候，所有下载子任务都会一同被终止！
+        /// </summary>
+        public DownloadCenterOperation DownloadCenter { set; get; }
+
         /// <summary>
         /// 包裹名称
         /// </summary>
@@ -98,19 +103,16 @@ namespace YooAsset
         public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
         {
             var operation = new DCFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
         {
             var operation = new DCFSLoadPackageManifestOperation(this, packageVersion, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
         {
             var operation = new DCFSRequestPackageVersionOperation(this, appendTimeTicks, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
@@ -118,64 +120,60 @@ namespace YooAsset
             if (clearMode == EFileClearMode.ClearAllBundleFiles.ToString())
             {
                 var operation = new ClearAllCacheBundleFilesOperation(this);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else if (clearMode == EFileClearMode.ClearUnusedBundleFiles.ToString())
             {
                 var operation = new ClearUnusedCacheBundleFilesOperation(this, manifest);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else if (clearMode == EFileClearMode.ClearBundleFilesByTags.ToString())
             {
                 var operation = new ClearCacheBundleFilesByTagsOperaiton(this, manifest, clearParam);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else if (clearMode == EFileClearMode.ClearAllManifestFiles.ToString())
             {
                 var operation = new ClearAllCacheManifestFilesOperation(this);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else if (clearMode == EFileClearMode.ClearUnusedManifestFiles.ToString())
             {
                 var operation = new ClearUnusedCacheManifestFilesOperation(this, manifest);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else
             {
                 string error = $"Invalid clear mode : {clearMode}";
                 var operation = new FSClearCacheFilesCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
         }
         public virtual FSDownloadFileOperation DownloadFileAsync(PackageBundle bundle, DownloadParam param)
         {
-            return _downloadCenter.DownloadFileAsync(bundle, param);
+            var downloader = DownloadCenter.DownloadFileAsync(bundle, param);
+            downloader.Reference(); //增加下载器的引用计数
+
+            // 注意：将下载器进行包裹，可以避免父类任务终止的时候，连带子任务里的下载器也一起被终止！
+            var wrapper = new DownloadFileWrapper(downloader);
+            return wrapper;
         }
         public virtual FSLoadBundleOperation LoadBundleFile(PackageBundle bundle)
         {
             if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
             {
                 var operation = new DCFSLoadAssetBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else if (bundle.BundleType == (int)EBuildBundleType.RawBundle)
             {
                 var operation = new DCFSLoadRawBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else
             {
                 string error = $"{nameof(DefaultCacheFileSystem)} not support load bundle type : {bundle.BundleType}";
                 var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
         }
@@ -231,11 +229,14 @@ namespace YooAsset
             _cacheBundleFilesRoot = PathUtility.Combine(_packageRoot, DefaultCacheFileSystemDefine.BundleFilesFolderName);
             _tempFilesRoot = PathUtility.Combine(_packageRoot, DefaultCacheFileSystemDefine.TempFilesFolderName);
             _cacheManifestFilesRoot = PathUtility.Combine(_packageRoot, DefaultCacheFileSystemDefine.ManifestFilesFolderName);
-            _downloadCenter = new DefaultCacheDownloadCenter(this);
         }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
         {
-            _downloadCenter.Update();
+            if (DownloadCenter != null)
+            {
+                DownloadCenter.AbortOperation();
+                DownloadCenter = null;
+            }
         }
 
         public virtual bool Belong(PackageBundle bundle)

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSInitializeOperation.cs

@@ -9,6 +9,7 @@ namespace YooAsset
             CheckAppFootPrint,
             SearchCacheFiles,
             VerifyCacheFiles,
+            CreateDownloadCenter,
             Done,
         }
 
@@ -22,7 +23,7 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
 #if UNITY_WEBGL
             _steps = ESteps.Done;
@@ -32,7 +33,7 @@ namespace YooAsset
             _steps = ESteps.CheckAppFootPrint;
 #endif
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -58,9 +59,11 @@ namespace YooAsset
                 if (_searchCacheFilesOp == null)
                 {
                     _searchCacheFilesOp = new SearchCacheFilesOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _searchCacheFilesOp);
+                    _searchCacheFilesOp.StartOperation();
+                    AddChildOperation(_searchCacheFilesOp);
                 }
 
+                _searchCacheFilesOp.UpdateOperation();
                 Progress = _searchCacheFilesOp.Progress;
                 if (_searchCacheFilesOp.IsDone == false)
                     return;
@@ -73,17 +76,18 @@ namespace YooAsset
                 if (_verifyCacheFilesOp == null)
                 {
                     _verifyCacheFilesOp = new VerifyCacheFilesOperation(_fileSystem, _searchCacheFilesOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _verifyCacheFilesOp);
+                    _verifyCacheFilesOp.StartOperation();
+                    AddChildOperation(_verifyCacheFilesOp);
                 }
 
+                _verifyCacheFilesOp.UpdateOperation();
                 Progress = _verifyCacheFilesOp.Progress;
                 if (_verifyCacheFilesOp.IsDone == false)
                     return;
 
                 if (_verifyCacheFilesOp.Status == EOperationStatus.Succeed)
                 {
-                    _steps = ESteps.Done;
-                    Status = EOperationStatus.Succeed;
+                    _steps = ESteps.CreateDownloadCenter;
                     YooLogger.Log($"Package '{_fileSystem.PackageName}' cached files count : {_fileSystem.FileCount}");
                 }
                 else
@@ -93,6 +97,19 @@ namespace YooAsset
                     Error = _verifyCacheFilesOp.Error;
                 }
             }
+
+            if (_steps == ESteps.CreateDownloadCenter)
+            {
+                // 注意：下载中心作为独立任务运行！
+                if (_fileSystem.DownloadCenter == null)
+                {
+                    _fileSystem.DownloadCenter = new DownloadCenterOperation(_fileSystem);
+                    OperationSystem.StartOperation(_fileSystem.PackageName, _fileSystem.DownloadCenter);
+                }
+
+                _steps = ESteps.Done;
+                Status = EOperationStatus.Succeed;
+            }
         }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadBundleOperation.cs

@@ -29,11 +29,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CheckExist;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -54,15 +54,19 @@ namespace YooAsset
 
             if (_steps == ESteps.DownloadFile)
             {
+                // 注意：边玩边下下载器引用计数没有Release
                 if (_downloadFileOp == null)
                 {
                     DownloadParam downloadParam = new DownloadParam(int.MaxValue, 60);
                     _downloadFileOp = _fileSystem.DownloadFileAsync(_bundle, downloadParam);
+                    _downloadFileOp.StartOperation();
+                    AddChildOperation(_downloadFileOp);
                 }
 
                 if (IsWaitForAsyncComplete)
                     _downloadFileOp.WaitForAsyncComplete();
 
+                _downloadFileOp.UpdateOperation();
                 DownloadProgress = _downloadFileOp.DownloadProgress;
                 DownloadedBytes = _downloadFileOp.DownloadedBytes;
                 if (_downloadFileOp.IsDone == false)
@@ -219,14 +223,6 @@ namespace YooAsset
                 }
             }
         }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadFile)
-            {
-                if (_downloadFileOp != null)
-                    _downloadFileOp.SetAbort();
-            }
-        }
     }
 
     internal class DCFSLoadRawBundleOperation : FSLoadBundleOperation
@@ -251,11 +247,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CheckExist;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -276,15 +272,19 @@ namespace YooAsset
 
             if (_steps == ESteps.DownloadFile)
             {
+                // 注意：边玩边下下载器引用计数没有Release
                 if (_downloadFileOp == null)
                 {
                     DownloadParam downloadParam = new DownloadParam(int.MaxValue, 60);
                     _downloadFileOp = _fileSystem.DownloadFileAsync(_bundle, downloadParam);
+                    _downloadFileOp.StartOperation();
+                    AddChildOperation(_downloadFileOp);
                 }
 
                 if (IsWaitForAsyncComplete)
                     _downloadFileOp.WaitForAsyncComplete();
 
+                _downloadFileOp.UpdateOperation();
                 DownloadProgress = _downloadFileOp.DownloadProgress;
                 DownloadedBytes = _downloadFileOp.DownloadedBytes;
                 if (_downloadFileOp.IsDone == false)
@@ -335,13 +335,5 @@ namespace YooAsset
                 }
             }
         }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadFile)
-            {
-                if (_downloadFileOp != null)
-                    _downloadFileOp.SetAbort();
-            }
-        }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadPackageManifestOperation.cs

@@ -30,11 +30,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.DownloadPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -44,9 +44,11 @@ namespace YooAsset
                 if (_downloadPackageHashOp == null)
                 {
                     _downloadPackageHashOp = new DownloadPackageHashOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _downloadPackageHashOp);
+                    _downloadPackageHashOp.StartOperation();
+                    AddChildOperation(_downloadPackageHashOp);
                 }
 
+                _downloadPackageHashOp.UpdateOperation();
                 if (_downloadPackageHashOp.IsDone == false)
                     return;
 
@@ -67,9 +69,11 @@ namespace YooAsset
                 if (_downloadPackageManifestOp == null)
                 {
                     _downloadPackageManifestOp = new DownloadPackageManifestOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _downloadPackageManifestOp);
+                    _downloadPackageManifestOp.StartOperation();
+                    AddChildOperation(_downloadPackageManifestOp);
                 }
 
+                _downloadPackageManifestOp.UpdateOperation();
                 if (_downloadPackageManifestOp.IsDone == false)
                     return;
 
@@ -90,9 +94,11 @@ namespace YooAsset
                 if (_loadCachePackageHashOp == null)
                 {
                     _loadCachePackageHashOp = new LoadCachePackageHashOperation(_fileSystem, _packageVersion);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCachePackageHashOp);
+                    _loadCachePackageHashOp.StartOperation();
+                    AddChildOperation(_loadCachePackageHashOp);
                 }
 
+                _loadCachePackageHashOp.UpdateOperation();
                 if (_loadCachePackageHashOp.IsDone == false)
                     return;
 
@@ -115,9 +121,11 @@ namespace YooAsset
                 {
                     string packageHash = _loadCachePackageHashOp.PackageHash;
                     _loadCachePackageManifestOp = new LoadCachePackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCachePackageManifestOp);
+                    _loadCachePackageManifestOp.StartOperation();
+                    AddChildOperation(_loadCachePackageManifestOp);
                 }
 
+                _loadCachePackageManifestOp.UpdateOperation();
                 Progress = _loadCachePackageManifestOp.Progress;
                 if (_loadCachePackageManifestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSRequestPackageVersionOperation.cs

@@ -23,11 +23,11 @@ namespace YooAsset
             _appendTimeTicks = appendTimeTicks;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.GetPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -37,9 +37,11 @@ namespace YooAsset
                 if (_requestRemotePackageVersionOp == null)
                 {
                     _requestRemotePackageVersionOp = new RequestRemotePackageVersionOperation(_fileSystem, _appendTimeTicks, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestRemotePackageVersionOp);
+                    _requestRemotePackageVersionOp.StartOperation();
+                    AddChildOperation(_requestRemotePackageVersionOp);
                 }
 
+                _requestRemotePackageVersionOp.UpdateOperation();
                 Progress = _requestRemotePackageVersionOp.Progress;
                 if (_requestRemotePackageVersionOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearAllCacheBundleFilesOperation.cs

@@ -23,11 +23,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.GetAllCacheFiles;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearAllCacheManifestFilesOperation.cs

@@ -20,11 +20,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.ClearAllCacheFiles;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearCacheBundleFilesByTagsOperaiton.cs

@@ -27,11 +27,11 @@ namespace YooAsset
             _manifest = manifest;
             _clearParam = clearParam;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CheckArgs;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearUnusedCacheBundleFilesOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _manifest = manifest;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.GetUnusedCacheFiles;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/ClearUnusedCacheManifestFilesOperation.cs

@@ -22,11 +22,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _manifest = manifest;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.ClearUnusedCacheFiles;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs

@@ -3,33 +3,33 @@ using System.Collections.Generic;
 
 namespace YooAsset
 {
-    internal class DefaultCacheDownloadCenter
+    internal class DownloadCenterOperation : AsyncOperationBase
     {
         private readonly DefaultCacheFileSystem _fileSystem;
         protected readonly Dictionary<string, DefaultDownloadFileOperation> _downloaders = new Dictionary<string, DefaultDownloadFileOperation>(1000);
         protected readonly List<string> _removeDownloadList = new List<string>(1000);
 
-        public DefaultCacheDownloadCenter(DefaultCacheFileSystem fileSystem)
+        public DownloadCenterOperation(DefaultCacheFileSystem fileSystem)
         {
             _fileSystem = fileSystem;
         }
-
-        /// <summary>
-        /// 更新下载中心
-        /// </summary>
-        public void Update()
+        internal override void InternalStart()
+        {
+        }
+        internal override void InternalUpdate()
         {
             // 获取可移除的下载器集合
             _removeDownloadList.Clear();
             foreach (var valuePair in _downloaders)
             {
                 var downloader = valuePair.Value;
+                downloader.UpdateOperation();
 
                 // 注意：主动终止引用计数为零的下载任务
                 if (downloader.RefCount <= 0)
                 {
                     _removeDownloadList.Add(valuePair.Key);
-                    downloader.SetAbort();
+                    downloader.AbortOperation();
                     continue;
                 }
 
@@ -61,7 +61,7 @@ namespace YooAsset
                         var operation = operationPair.Value;
                         if (operation.Status == EOperationStatus.None)
                         {
-                            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
+                            operation.StartOperation();
                             startCount--;
                             if (startCount <= 0)
                                 break;
@@ -79,7 +79,6 @@ namespace YooAsset
             // 查询旧的下载器
             if (_downloaders.TryGetValue(bundle.BundleGUID, out var oldDownloader))
             {
-                oldDownloader.Reference();
                 return oldDownloader;
             }
 
@@ -101,13 +100,13 @@ namespace YooAsset
             if (bundle.FileSize >= _fileSystem.ResumeDownloadMinimumSize)
             {
                 newDownloader = new DownloadResumeFileOperation(_fileSystem, bundle, param);
-                newDownloader.Reference();
+                AddChildOperation(newDownloader);
                 _downloaders.Add(bundle.BundleGUID, newDownloader);
             }
             else
             {
                 newDownloader = new DownloadNormalFileOperation(_fileSystem, bundle, param);
-                newDownloader.Reference();
+                AddChildOperation(newDownloader);
                 _downloaders.Add(bundle.BundleGUID, newDownloader);
             }
             return newDownloader;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadNormalFileOperation.cs

@@ -16,13 +16,13 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _isReuqestLocalFile = DownloadSystemHelper.IsRequestLocalFile(Param.MainURL);
             _tempFilePath = _fileSystem.GetTempFilePath(Bundle);
             _steps = ESteps.CheckExists;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -89,7 +89,8 @@ namespace YooAsset
             {
                 var element = new TempFileElement(_tempFilePath, Bundle.FileCRC, Bundle.FileSize);
                 _verifyOperation = new VerifyTempFileOperation(element);
-                OperationSystem.StartOperation(_fileSystem.PackageName, _verifyOperation);
+                _verifyOperation.StartOperation();
+                AddChildOperation(_verifyOperation);
                 _steps = ESteps.CheckVerifyTempFile;
             }
 
@@ -99,6 +100,7 @@ namespace YooAsset
                 if (IsWaitForAsyncComplete)
                     _verifyOperation.WaitForAsyncComplete();
 
+                _verifyOperation.UpdateOperation();
                 if (_verifyOperation.IsDone == false)
                     return;
 
@@ -157,25 +159,19 @@ namespace YooAsset
                 }
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeWebRequest();
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            //TODO 防止下载器挂起陷入无限死循环！
-            if (_steps == ESteps.None)
-            {
-                InternalOnStart();
-            }
-
             while (true)
             {
                 //TODO 如果是导入或解压本地文件，执行等待完毕
                 if (_isReuqestLocalFile)
                 {
-                    InternalOnUpdate();
+                    InternalUpdate();
                     if (IsDone)
                         break;
                 }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageHashOperation.cs

@@ -26,12 +26,12 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(DownloadPackageHashOperation));
             _steps = ESteps.CheckExist;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -58,9 +58,11 @@ namespace YooAsset
                     string fileName = YooAssetSettingsData.GetPackageHashFileName(_fileSystem.PackageName, _packageVersion);
                     string webURL = GetWebRequestURL(fileName);
                     _webFileRequestOp = new UnityWebFileRequestOperation(webURL, savePath, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webFileRequestOp);
+                    _webFileRequestOp.StartOperation();
+                    AddChildOperation(_webFileRequestOp);
                 }
 
+                _webFileRequestOp.UpdateOperation();
                 if (_webFileRequestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageManifestOperation.cs

@@ -26,12 +26,12 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(DownloadPackageManifestOperation));
             _steps = ESteps.CheckExist;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -58,9 +58,11 @@ namespace YooAsset
                     string fileName = YooAssetSettingsData.GetManifestBinaryFileName(_fileSystem.PackageName, _packageVersion);
                     string webURL = GetDownloadRequestURL(fileName);
                     _webFileRequestOp = new UnityWebFileRequestOperation(webURL, savePath, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webFileRequestOp);
+                    _webFileRequestOp.StartOperation();
+                    AddChildOperation(_webFileRequestOp);
                 }
 
+                _webFileRequestOp.UpdateOperation();
                 if (_webFileRequestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadResumeFileOperation.cs

@@ -1,5 +1,4 @@
-using System.Collections.Generic;
-using System.IO;
+using System.IO;
 using UnityEngine;
 using UnityEngine.Networking;
 
@@ -20,13 +19,13 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _isReuqestLocalFile = DownloadSystemHelper.IsRequestLocalFile(Param.MainURL);
             _tempFilePath = _fileSystem.GetTempFilePath(Bundle);
             _steps = ESteps.CheckExists;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -110,7 +109,8 @@ namespace YooAsset
             {
                 var element = new TempFileElement(_tempFilePath, Bundle.FileCRC, Bundle.FileSize);
                 _verifyOperation = new VerifyTempFileOperation(element);
-                OperationSystem.StartOperation(_fileSystem.PackageName, _verifyOperation);
+                _verifyOperation.StartOperation();
+                AddChildOperation(_verifyOperation);
                 _steps = ESteps.CheckVerifyTempFile;
             }
 
@@ -120,6 +120,7 @@ namespace YooAsset
                 if (IsWaitForAsyncComplete)
                     _verifyOperation.WaitForAsyncComplete();
 
+                _verifyOperation.UpdateOperation();
                 if (_verifyOperation.IsDone == false)
                     return;
 
@@ -177,25 +178,19 @@ namespace YooAsset
                 }
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeWebRequest();
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            //TODO 防止下载器挂起陷入无限死循环！
-            if (_steps == ESteps.None)
-            {
-                InternalOnStart();
-            }
-
             while (true)
             {
                 //TODO 如果是导入或解压本地文件，执行等待完毕
                 if (_isReuqestLocalFile)
                 {
-                    InternalOnUpdate();
+                    InternalUpdate();
                     if (IsDone)
                         break;
                 }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageHashOperation.cs

@@ -26,11 +26,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _packageVersion = packageVersion;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageManifestOperation.cs

@@ -32,11 +32,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _packageHash = packageHash;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadFileData;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -77,9 +77,11 @@ namespace YooAsset
                 if (_deserializer == null)
                 {
                     _deserializer = new DeserializeManifestOperation(_fileData);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                 }
 
+                _deserializer.UpdateOperation();
                 Progress = _deserializer.Progress;
                 if (_deserializer.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/RequestRemotePackageVersionOperation.cs

@@ -29,12 +29,12 @@ namespace YooAsset
             _appendTimeTicks = appendTimeTicks;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(RequestRemotePackageVersionOperation));
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -46,9 +46,11 @@ namespace YooAsset
                     string fileName = YooAssetSettingsData.GetPackageVersionFileName(_fileSystem.PackageName);
                     string url = GetWebRequestURL(fileName);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 Progress = _webTextRequestOp.Progress;
                 if (_webTextRequestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/SearchCacheFilesOperation.cs

@@ -30,12 +30,12 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.Prepare;
             _verifyStartTime = UnityEngine.Time.realtimeSinceStartup;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/VerifyCacheFilesOperation.cs

@@ -37,12 +37,12 @@ namespace YooAsset
             _waitingList = elements;
             _fileVerifyLevel = fileSystem.FileVerifyLevel;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.InitVerify;
             _verifyStartTime = UnityEngine.Time.realtimeSinceStartup;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/VerifyTempFileOperation.cs

@@ -29,11 +29,11 @@ namespace YooAsset
         {
             _element = element;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.VerifyFile;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -72,7 +72,7 @@ namespace YooAsset
             while (true)
             {
                 //TODO 等待子线程验证文件完毕，该操作会挂起主线程
-                InternalOnUpdate();
+                InternalUpdate();
                 if (IsDone)
                     break;
             }

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/DefaultEditorFileSystem.cs

@@ -54,25 +54,21 @@ namespace YooAsset
         public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
         {
             var operation = new DEFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
         {
             var operation = new DEFSLoadPackageManifestOperation(this, packageVersion);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
         {
             var operation = new DEFSRequestPackageVersionOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
         {
             var operation = new FSClearCacheFilesCompleteOperation();
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSDownloadFileOperation DownloadFileAsync(PackageBundle bundle, DownloadParam param)
@@ -84,14 +80,12 @@ namespace YooAsset
             if (bundle.BundleType == (int)EBuildBundleType.VirtualBundle)
             {
                 var operation = new DEFSLoadBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else
             {
                 string error = $"{nameof(DefaultEditorFileSystem)} not support load bundle type : {bundle.BundleType}";
                 var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
         }
@@ -120,7 +114,7 @@ namespace YooAsset
 
             _packageRoot = packageRoot;
         }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
         {
         }
 

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSInitializeOperation.cs

@@ -9,11 +9,11 @@ namespace YooAsset
         {
             _fileSytem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Status = EOperationStatus.Succeed;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSLoadBundleOperation.cs

@@ -22,11 +22,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.DownloadFile;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -72,8 +72,5 @@ namespace YooAsset
                 }
             }
         }
-        public override void AbortDownloadOperation()
-        {
-        }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSLoadPackageManifestOperation.cs

@@ -23,11 +23,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _packageVersion = packageVersion;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadEditorPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -37,9 +37,11 @@ namespace YooAsset
                 if (_loadEditorPackageHashOpe == null)
                 {
                     _loadEditorPackageHashOpe = new LoadEditorPackageHashOperation(_fileSystem, _packageVersion);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadEditorPackageHashOpe);
+                    _loadEditorPackageHashOpe.StartOperation();
+                    AddChildOperation(_loadEditorPackageHashOpe);
                 }
 
+                _loadEditorPackageHashOpe.UpdateOperation();
                 if (_loadEditorPackageHashOpe.IsDone == false)
                     return;
 
@@ -61,9 +63,11 @@ namespace YooAsset
                 {
                     string packageHash = _loadEditorPackageHashOpe.PackageHash;
                     _loadEditorPackageManifestOp = new LoadEditorPackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadEditorPackageManifestOp);
+                    _loadEditorPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadEditorPackageManifestOp);
                 }
 
+                _loadEditorPackageManifestOp.UpdateOperation();
                 Progress = _loadEditorPackageManifestOp.Progress;
                 if (_loadEditorPackageManifestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSRequestPackageVersionOperation.cs

@@ -19,11 +19,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -33,9 +33,11 @@ namespace YooAsset
                 if (_loadEditorPackageVersionOp == null)
                 {
                     _loadEditorPackageVersionOp = new LoadEditorPackageVersionOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadEditorPackageVersionOp);
+                    _loadEditorPackageVersionOp.StartOperation();
+                    AddChildOperation(_loadEditorPackageVersionOp);
                 }
 
+                _loadEditorPackageVersionOp.UpdateOperation();
                 if (_loadEditorPackageVersionOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/LoadEditorPackageHashOperation.cs

@@ -26,11 +26,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _packageVersion = packageVersion;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/LoadEditorPackageManifestOperation.cs

@@ -32,11 +32,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _packageHash = packageHash;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadFileData;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -77,9 +77,11 @@ namespace YooAsset
                 if (_deserializer == null)
                 {
                     _deserializer = new DeserializeManifestOperation(_fileData);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                 }
 
+                _deserializer.UpdateOperation();
                 Progress = _deserializer.Progress;
                 if (_deserializer.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/LoadEditorPackageVersionOperation.cs

@@ -24,11 +24,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/DefaultWebRemoteFileSystem.cs

@@ -61,25 +61,21 @@ namespace YooAsset
         public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
         {
             var operation = new DWRFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
         {
             var operation = new DWRFSLoadPackageManifestOperation(this, packageVersion, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
         {
             var operation = new DWRFSRequestPackageVersionOperation(this, appendTimeTicks, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
         {
             var operation = new FSClearCacheFilesCompleteOperation();
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSDownloadFileOperation DownloadFileAsync(PackageBundle bundle, DownloadParam param)
@@ -91,14 +87,12 @@ namespace YooAsset
             if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
             {
                 var operation = new DWRFSLoadAssetBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else
             {
                 string error = $"{nameof(DefaultWebRemoteFileSystem)} not support load bundle type : {bundle.BundleType}";
                 var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
         }
@@ -126,7 +120,7 @@ namespace YooAsset
         {
             PackageName = packageName;
         }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
         {
         }
 

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSInitializeOperation.cs

@@ -9,11 +9,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Status = EOperationStatus.Succeed;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadBundleOperation.cs

@@ -21,11 +21,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.DownloadAssetBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -41,15 +41,18 @@ namespace YooAsset
                     if (_bundle.Encrypted)
                     {
                         _downloadAssetBundleOp = new DownloadWebEncryptAssetBundleOperation(true, _fileSystem.DecryptionServices, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                     }
                     else
                     {
                         _downloadAssetBundleOp = new DownloadWebNormalAssetBundleOperation(_fileSystem.DisableUnityWebCache, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                     }
                 }
 
+                _downloadAssetBundleOp.UpdateOperation();
                 DownloadProgress = _downloadAssetBundleOp.DownloadProgress;
                 DownloadedBytes = _downloadAssetBundleOp.DownloadedBytes;
                 Progress = _downloadAssetBundleOp.Progress;
@@ -90,13 +93,5 @@ namespace YooAsset
                 UnityEngine.Debug.LogError(Error);
             }
         }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadAssetBundle)
-            {
-                if (_downloadAssetBundleOp != null)
-                    _downloadAssetBundleOp.SetAbort();
-            }
-        }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadPackageManifestOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestWebPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -39,9 +39,11 @@ namespace YooAsset
                 if (_requestWebPackageHashOp == null)
                 {
                     _requestWebPackageHashOp = new RequestWebRemotePackageHashOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageHashOp);
+                    _requestWebPackageHashOp.StartOperation();
+                    AddChildOperation(_requestWebPackageHashOp);
                 }
 
+                _requestWebPackageHashOp.UpdateOperation();
                 if (_requestWebPackageHashOp.IsDone == false)
                     return;
 
@@ -63,9 +65,11 @@ namespace YooAsset
                 {
                     string packageHash = _requestWebPackageHashOp.PackageHash;
                     _loadWebPackageManifestOp = new LoadWebRemotePackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadWebPackageManifestOp);
+                    _loadWebPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadWebPackageManifestOp);
                 }
 
+                _loadWebPackageManifestOp.UpdateOperation();
                 Progress = _loadWebPackageManifestOp.Progress;
                 if (_loadWebPackageManifestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSRequestPackageVersionOperation.cs

@@ -23,11 +23,11 @@ namespace YooAsset
             _appendTimeTicks = appendTimeTicks;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -37,9 +37,11 @@ namespace YooAsset
                 if (_requestWebPackageVersionOp == null)
                 {
                     _requestWebPackageVersionOp = new RequestWebRemotePackageVersionOperation(_fileSystem, _appendTimeTicks, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageVersionOp);
+                    _requestWebPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestWebPackageVersionOp);
                 }
 
+                _requestWebPackageVersionOp.UpdateOperation();
                 Progress = _requestWebPackageVersionOp.Progress;
                 if (_requestWebPackageVersionOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/LoadWebRemotePackageManifestOperation.cs

@@ -32,12 +32,12 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _packageHash = packageHash;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(LoadWebRemotePackageManifestOperation));
             _steps = ESteps.RequestFileData;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -49,9 +49,11 @@ namespace YooAsset
                     string fileName = YooAssetSettingsData.GetManifestBinaryFileName(_fileSystem.PackageName, _packageVersion);
                     string url = GetWebRequestURL(fileName);
                     _webDataRequestOp = new UnityWebDataRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webDataRequestOp);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
                 }
 
+                _webDataRequestOp.UpdateOperation();
                 if (_webDataRequestOp.IsDone == false)
                     return;
 
@@ -88,9 +90,11 @@ namespace YooAsset
                 if (_deserializer == null)
                 {
                     _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                 }
 
+                _deserializer.UpdateOperation();
                 Progress = _deserializer.Progress;
                 if (_deserializer.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageHashOperation.cs

@@ -29,12 +29,12 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(RequestWebRemotePackageHashOperation));
             _steps = ESteps.RequestPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -46,9 +46,11 @@ namespace YooAsset
                     string fileName = YooAssetSettingsData.GetPackageHashFileName(_fileSystem.PackageName, _packageVersion);
                     string url = GetWebRequestURL(fileName);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 Progress = _webTextRequestOp.Progress;
                 if (_webTextRequestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageVersionOperation.cs

@@ -29,12 +29,12 @@ namespace YooAsset
             _appendTimeTicks = appendTimeTicks;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _requestCount = WebRequestCounter.GetRequestFailedCount(_fileSystem.PackageName, nameof(RequestWebRemotePackageVersionOperation));
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -46,9 +46,11 @@ namespace YooAsset
                     string fileName = YooAssetSettingsData.GetPackageVersionFileName(_fileSystem.PackageName);
                     string url = GetWebRequestURL(fileName);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 Progress = _webTextRequestOp.Progress;
                 if (_webTextRequestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/DefaultWebServerFileSystem.cs

@@ -70,25 +70,21 @@ namespace YooAsset
         public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
         {
             var operation = new DWSFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
         {
             var operation = new DWSFSLoadPackageManifestOperation(this, packageVersion, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
         {
             var operation = new DWSFSRequestPackageVersionOperation(this, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
         {
             var operation = new FSClearCacheFilesCompleteOperation();
-            OperationSystem.StartOperation(PackageName, operation);
             return operation;
         }
         public virtual FSDownloadFileOperation DownloadFileAsync(PackageBundle bundle, DownloadParam param)
@@ -100,14 +96,12 @@ namespace YooAsset
             if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
             {
                 var operation = new DWSFSLoadAssetBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
             else
             {
                 string error = $"{nameof(DefaultWebServerFileSystem)} not support load bundle type : {bundle.BundleType}";
                 var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                 return operation;
             }
         }
@@ -136,7 +130,7 @@ namespace YooAsset
             else
                 _webPackageRoot = packageRoot;
         }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
         {
         }
 

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSInitializeOperation.cs

@@ -1,6 +1,4 @@
 
-using static UnityEngine.Networking.UnityWebRequest;
-
 namespace YooAsset
 {
     internal class DWSFSInitializeOperation : FSInitializeFileSystemOperation
@@ -21,11 +19,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadCatalogFile;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -49,9 +47,11 @@ namespace YooAsset
 #endif
 
                     _loadCatalogFileOp = new LoadWebServerCatalogFileOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCatalogFileOp);
+                    _loadCatalogFileOp.StartOperation();
+                    AddChildOperation(_loadCatalogFileOp);
                 }
 
+                _loadCatalogFileOp.UpdateOperation();
                 if (_loadCatalogFileOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSLoadBundleOperation.cs

@@ -21,11 +21,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _bundle = bundle;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.DownloadAssetBundle;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -42,15 +42,18 @@ namespace YooAsset
                     if (_bundle.Encrypted)
                     {
                         _downloadAssetBundleOp = new DownloadWebEncryptAssetBundleOperation(true, _fileSystem.DecryptionServices, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                     }
                     else
                     {
                         _downloadAssetBundleOp = new DownloadWebNormalAssetBundleOperation(_fileSystem.DisableUnityWebCache, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                     }
                 }
 
+                _downloadAssetBundleOp.UpdateOperation();
                 DownloadProgress = _downloadAssetBundleOp.DownloadProgress;
                 DownloadedBytes = _downloadAssetBundleOp.DownloadedBytes;
                 Progress = _downloadAssetBundleOp.Progress;
@@ -91,13 +94,5 @@ namespace YooAsset
                 UnityEngine.Debug.LogError(Error);
             }
         }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadAssetBundle)
-            {
-                if (_downloadAssetBundleOp != null)
-                    _downloadAssetBundleOp.SetAbort();
-            }
-        }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSLoadPackageManifestOperation.cs

@@ -25,11 +25,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestWebPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -39,9 +39,11 @@ namespace YooAsset
                 if (_requestWebPackageHashOp == null)
                 {
                     _requestWebPackageHashOp = new RequestWebServerPackageHashOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageHashOp);
+                    _requestWebPackageHashOp.StartOperation();
+                    AddChildOperation(_requestWebPackageHashOp);
                 }
 
+                _requestWebPackageHashOp.UpdateOperation();
                 if (_requestWebPackageHashOp.IsDone == false)
                     return;
 
@@ -63,9 +65,11 @@ namespace YooAsset
                 {
                     string packageHash = _requestWebPackageHashOp.PackageHash;
                     _loadWebPackageManifestOp = new LoadWebServerPackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadWebPackageManifestOp);
+                    _loadWebPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadWebPackageManifestOp);
                 }
 
+                _loadWebPackageManifestOp.UpdateOperation();
                 Progress = _loadWebPackageManifestOp.Progress;
                 if (_loadWebPackageManifestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSRequestPackageVersionOperation.cs

@@ -21,11 +21,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -35,9 +35,11 @@ namespace YooAsset
                 if (_requestWebPackageVersionOp == null)
                 {
                     _requestWebPackageVersionOp = new RequestWebServerPackageVersionOperation(_fileSystem, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageVersionOp);
+                    _requestWebPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestWebPackageVersionOp);
                 }
 
+                _requestWebPackageVersionOp.UpdateOperation();
                 Progress = _requestWebPackageVersionOp.Progress;
                 if (_requestWebPackageVersionOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/LoadWebServerCatalogFileOperation.cs

@@ -27,11 +27,11 @@ namespace YooAsset
         {
             _fileSystem = fileSystem;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadCatalog;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/LoadWebServerPackageManifestOperation.cs

@@ -31,11 +31,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _packageHash = packageHash;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestFileData;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -47,9 +47,11 @@ namespace YooAsset
                     string filePath = _fileSystem.GetWebPackageManifestFilePath(_packageVersion);
                     string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                     _webDataRequestOp = new UnityWebDataRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webDataRequestOp);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
                 }
 
+                _webDataRequestOp.UpdateOperation();
                 if (_webDataRequestOp.IsDone == false)
                     return;
 
@@ -85,9 +87,11 @@ namespace YooAsset
                 if (_deserializer == null)
                 {
                     _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                 }
 
+                _deserializer.UpdateOperation();
                 Progress = _deserializer.Progress;
                 if (_deserializer.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/RequestWebServerPackageHashOperation.cs

@@ -28,11 +28,11 @@ namespace YooAsset
             _packageVersion = packageVersion;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageHash;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -44,9 +44,11 @@ namespace YooAsset
                     string filePath = _fileSystem.GetWebPackageHashFilePath(_packageVersion);
                     string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 Progress = _webTextRequestOp.Progress;
                 if (_webTextRequestOp.IsDone == false)
                     return;

Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/RequestWebServerPackageVersionOperation.cs

@@ -26,11 +26,11 @@ namespace YooAsset
             _fileSystem = fileSystem;
             _timeout = timeout;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.RequestPackageVersion;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -42,9 +42,11 @@ namespace YooAsset
                     string filePath = _fileSystem.GetWebPackageVersionFilePath();
                     string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                     _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                 }
 
+                _webTextRequestOp.UpdateOperation();
                 if (_webTextRequestOp.IsDone == false)
                     return;
 

Assets/YooAsset/Runtime/FileSystem/Interface/IFileSystem.cs

@@ -56,14 +56,14 @@ namespace YooAsset
         void SetParameter(string name, object value);
 
         /// <summary>
-        /// 创建缓存系统
+        /// 创建文件系统
         /// </summary>
         void OnCreate(string packageName, string packageRoot);
 
         /// <summary>
-        /// 更新文件系统
+        /// 销毁文件系统
         /// </summary>
-        void OnUpdate();
+        void OnDestroy();
 
 
         /// <summary>

Assets/YooAsset/Runtime/FileSystem/Operation/FSClearCacheFilesOperation.cs

@@ -17,7 +17,7 @@ namespace YooAsset
         {
             _error = error;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             if (string.IsNullOrEmpty(_error))
             {
@@ -29,7 +29,7 @@ namespace YooAsset
                 Error = _error;
             }
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/Operation/FSDownloadFileOperation.cs

@@ -34,11 +34,19 @@ namespace YooAsset
             DownloadedBytes = 0;
             DownloadProgress = 0;
         }
-        public void Release()
+
+        /// <summary>
+        /// 减少引用计数
+        /// </summary>
+        public virtual void Release()
         {
             RefCount--;
         }
-        public void Reference()
+
+        /// <summary>
+        /// 增加引用计数
+        /// </summary>
+        public virtual void Reference()
         {
             RefCount++;
         }

Assets/YooAsset/Runtime/FileSystem/Operation/FSLoadBundleFileOperation.cs

@@ -1,5 +1,4 @@
-using UnityEngine;
-
+
 namespace YooAsset
 {
     internal abstract class FSLoadBundleOperation : AsyncOperationBase
@@ -18,11 +17,6 @@ namespace YooAsset
         /// 下载大小
         /// </summary>
         public long DownloadedBytes { protected set; get; } = 0;
-
-        /// <summary>
-        /// 终止下载任务
-        /// </summary>
-        public abstract void AbortDownloadOperation();
     }
 
     internal sealed class FSLoadBundleCompleteOperation : FSLoadBundleOperation
@@ -33,15 +27,12 @@ namespace YooAsset
         {
             _error = error;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             Status = EOperationStatus.Failed;
             Error = _error;
         }
-        internal override void InternalOnUpdate()
-        {
-        }
-        public override void AbortDownloadOperation()
+        internal override void InternalUpdate()
         {
         }
     }

Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DownloadAssetBundleOperation.cs

@@ -1,5 +1,4 @@
 using UnityEngine;
-using UnityEngine.Networking;
 
 namespace YooAsset
 {

Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DownloadFileWrapper.cs

@@ -0,0 +1,71 @@
+
+namespace YooAsset
+{
+    internal class DownloadFileWrapper : FSDownloadFileOperation
+    {
+        private enum ESteps
+        {
+            None,
+            Download,
+            Done,
+        }
+
+        private readonly FSDownloadFileOperation _downloadFileOp;
+        private ESteps _steps = ESteps.None;
+
+        internal DownloadFileWrapper(FSDownloadFileOperation downloadFileOp) : base(downloadFileOp.Bundle)
+        {
+            _downloadFileOp = downloadFileOp;
+        }
+        internal override void InternalStart()
+        {
+            _steps = ESteps.Download;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.Download)
+            {
+                if (IsWaitForAsyncComplete)
+                    _downloadFileOp.WaitForAsyncComplete();
+
+                if (_downloadFileOp.Status == EOperationStatus.None)
+                    return;
+
+                _downloadFileOp.UpdateOperation();
+                Progress = _downloadFileOp.Progress;
+                DownloadedBytes = _downloadFileOp.DownloadedBytes;
+                DownloadProgress = _downloadFileOp.DownloadProgress;
+                if (_downloadFileOp.IsDone == false)
+                    return;
+
+                _steps = ESteps.Done;
+                Status = _downloadFileOp.Status;
+                Error = _downloadFileOp.Error;
+                HttpCode = _downloadFileOp.HttpCode;
+            }
+        }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            while (true)
+            {
+                if (ExecuteWhileDone())
+                {
+                    _steps = ESteps.Done;
+                    break;
+                }
+            }
+        }
+
+        public override void Release()
+        {
+            _downloadFileOp.Release();
+        }
+        public override void Reference()
+        {
+            _downloadFileOp.Reference();
+        }
+    }
+}

Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DownloadFileWrapper.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 84c10fd3507a1c24a9043aebb72db5f5
+guid: 8088863fc7dfbd441bc897380cd7b97f
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DownloadWebEncryptAssetBundleOperation.cs

@@ -15,11 +15,11 @@ namespace YooAsset
             _checkTimeout = checkTimeout;
             _decryptionServices = decryptionServices;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CreateRequest;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -117,7 +117,7 @@ namespace YooAsset
                 }
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeWebRequest();

Assets/YooAsset/Runtime/FileSystem/Operation/Internal/DownloadWebNormalAssetBundleOperation.cs

@@ -13,11 +13,11 @@ namespace YooAsset
         {
             _disableUnityWebCache = disableUnityWebCache;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.CreateRequest;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -95,7 +95,7 @@ namespace YooAsset
                 }
             }
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             _steps = ESteps.Done;
             DisposeWebRequest();

Assets/YooAsset/Runtime/InitializeParameters.cs

@@ -1,4 +1,5 @@
-
+using System.Collections.Generic;
+
 namespace YooAsset
 {
     /// <summary>
@@ -25,6 +26,11 @@ namespace YooAsset
         /// WebGL运行模式
         /// </summary>
         WebPlayMode,
+
+        /// <summary>
+        /// 自定义运行模式
+        /// </summary>
+        CustomPlayMode,
     }
 
     /// <summary>
@@ -67,4 +73,16 @@ namespace YooAsset
         public FileSystemParameters WebServerFileSystemParameters;
         public FileSystemParameters WebRemoteFileSystemParameters;
     }
+
+    /// <summary>
+    /// 自定义运行模式的初始化参数
+    /// </summary>
+    public class CustomPlayModeParameters : InitializeParameters
+    {
+        /// <summary>
+        /// 文件系统初始化参数列表
+        /// 注意：列表最后一个元素作为主文件系统！
+        /// </summary>
+        public List<FileSystemParameters> FileSystemParameterList;
+    }
 }

Assets/YooAsset/Runtime/OperationSystem/AsyncOperationBase.cs

@@ -8,6 +8,7 @@ namespace YooAsset
 {
     public abstract class AsyncOperationBase : IEnumerator, IComparable<AsyncOperationBase>
     {
+        private readonly List<AsyncOperationBase> _childs = new List<AsyncOperationBase>(10);
         private Action<AsyncOperationBase> _callback;
         private string _packageName = null;
         private int _whileFrame = 1000;
@@ -15,12 +16,12 @@ namespace YooAsset
         /// <summary>
         /// 等待异步执行完成
         /// </summary>
-        internal bool IsWaitForAsyncComplete = false;
+        internal bool IsWaitForAsyncComplete { private set; get; } = false;
 
         /// <summary>
         /// 是否已经完成
         /// </summary>
-        internal bool IsFinish = false;
+        internal bool IsFinish { private set; get; } = false;
 
         /// <summary>
         /// 优先级
@@ -99,9 +100,9 @@ namespace YooAsset
             }
         }
 
-        internal abstract void InternalOnStart();
-        internal abstract void InternalOnUpdate();
-        internal virtual void InternalOnAbort()
+        internal abstract void InternalStart();
+        internal abstract void InternalUpdate();
+        internal virtual void InternalAbort()
         {
         }
         internal virtual void InternalWaitForAsyncComplete()
@@ -109,36 +110,78 @@ namespace YooAsset
             throw new System.NotImplementedException(this.GetType().Name);
         }
 
+        /// <summary>
+        /// 设置包裹名称
+        /// </summary>
         internal void SetPackageName(string packageName)
         {
             _packageName = packageName;
         }
-        internal void SetStart()
+
+        /// <summary>
+        /// 添加子任务
+        /// </summary>
+        internal void AddChildOperation(AsyncOperationBase child)
         {
-            Status = EOperationStatus.Processing;
-            InternalOnStart();
+#if UNITY_EDITOR
+            if (_childs.Contains(child))
+                throw new Exception($"The child node {child.GetType().Name} already exists !");
+#endif
+
+            _childs.Add(child);
         }
-        internal void SetFinish()
+
+        /// <summary>
+        /// 开始异步操作
+        /// </summary>
+        internal void StartOperation()
         {
-            IsFinish = true;
-
-            // 进度百分百完成
-            Progress = 1f;
-
-            //注意：如果完成回调内发生异常，会导致Task无限期等待
-            _callback?.Invoke(this);
-
-            if (_taskCompletionSource != null)
-                _taskCompletionSource.TrySetResult(null);
+            if (Status == EOperationStatus.None)
+            {
+                Status = EOperationStatus.Processing;
+                InternalStart();
+            }
         }
-        internal void SetAbort()
+
+        /// <summary>
+        /// 更新异步操作
+        /// </summary>
+        internal void UpdateOperation()
         {
+            if (IsDone == false)
+                InternalUpdate();
+
+            if (IsDone && IsFinish == false)
+            {
+                IsFinish = true;
+
+                // 进度百分百完成
+                Progress = 1f;
+
+                //注意：如果完成回调内发生异常，会导致Task无限期等待
+                _callback?.Invoke(this);
+
+                if (_taskCompletionSource != null)
+                    _taskCompletionSource.TrySetResult(null);
+            }
+        }
+
+        /// <summary>
+        /// 终止异步任务
+        /// </summary>
+        internal void AbortOperation()
+        {
+            foreach (var child in _childs)
+            {
+                child.AbortOperation();
+            }
+
             if (IsDone == false)
             {
                 Status = EOperationStatus.Failed;
                 Error = "user abort";
                 YooLogger.Warning($"Async operaiton {this.GetType().Name} has been abort !");
-                InternalOnAbort();
+                InternalAbort();
             }
         }
 
@@ -150,7 +193,7 @@ namespace YooAsset
             if (IsDone == false)
             {
                 // 执行更新逻辑
-                InternalOnUpdate();
+                InternalUpdate();
 
                 // 当执行次数用完时
                 _whileFrame--;
@@ -180,10 +223,20 @@ namespace YooAsset
             if (IsDone)
                 return;
 
+            //TODO 防止异步操作被挂起陷入无限死循环！
+            // 例如：文件解压任务或者文件导入任务！
+            if (Status == EOperationStatus.None)
+            {
+                StartOperation();
+            }
+
             IsWaitForAsyncComplete = true;
             InternalWaitForAsyncComplete();
         }
 
+        #region 调试信息
+        #endregion
+
         #region 排序接口实现
         public int CompareTo(AsyncOperationBase other)
         {

Assets/YooAsset/Runtime/OperationSystem/GameAsyncOperation.cs

@@ -3,15 +3,15 @@ namespace YooAsset
 {
     public abstract class GameAsyncOperation : AsyncOperationBase
     {
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             OnStart();
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             OnUpdate();
         }
-        internal override void InternalOnAbort()
+        internal override void InternalAbort()
         {
             OnAbort();
         }
@@ -53,7 +53,7 @@ namespace YooAsset
         /// </summary>
         protected void Abort()
         {
-            SetAbort();
+            AbortOperation();
         }
     }
 }

Assets/YooAsset/Runtime/OperationSystem/OperationSystem.cs

@@ -13,11 +13,6 @@ namespace YooAsset
         private static Stopwatch _watch;
         private static long _frameTime;
 
-        /// <summary>
-        /// 快速启动模式
-        /// </summary>
-        public static bool QuickStartMode = true;
-
         /// <summary>
         /// 异步操作的最小时间片段
         /// </summary>
@@ -48,8 +43,6 @@ namespace YooAsset
         /// </summary>
         public static void Update()
         {
-            _frameTime = _watch.ElapsedMilliseconds;
-
             // 添加新增的异步操作
             if (_newList.Count > 0)
             {
@@ -72,6 +65,7 @@ namespace YooAsset
             }
 
             // 更新进行中的异步操作
+            _frameTime = _watch.ElapsedMilliseconds;
             for (int i = 0; i < _operations.Count; i++)
             {
                 if (IsBusy)
@@ -81,11 +75,7 @@ namespace YooAsset
                 if (operation.IsFinish)
                     continue;
 
-                if (operation.IsDone == false)
-                    operation.InternalOnUpdate();
-
-                if (operation.IsDone)
-                    operation.SetFinish();
+                operation.UpdateOperation();
             }
 
             // 移除已经完成的异步操作
@@ -119,7 +109,7 @@ namespace YooAsset
             {
                 if (operation.PackageName == packageName)
                 {
-                    operation.SetAbort();
+                    operation.AbortOperation();
                 }
             }
 
@@ -128,7 +118,7 @@ namespace YooAsset
             {
                 if (operation.PackageName == packageName)
                 {
-                    operation.SetAbort();
+                    operation.AbortOperation();
                 }
             }
         }
@@ -140,12 +130,7 @@ namespace YooAsset
         {
             _newList.Add(operation);
             operation.SetPackageName(packageName);
-            operation.SetStart();
-
-            if (QuickStartMode)
-            {
-                operation.InternalOnUpdate();
-            }
+            operation.StartOperation();
         }
     }
 }

Assets/YooAsset/Runtime/ResourceManager/Operation/InstantiateOperation.cs

@@ -43,11 +43,11 @@ namespace YooAsset
             _worldPositionStays = worldPositionStays;
             _actived = actived;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadObject;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -162,7 +162,7 @@ namespace YooAsset
                 _instantiateAsync.Cancel();
 #endif
 
-            SetAbort();
+            AbortOperation();
         }
 
         /// <summary>

Assets/YooAsset/Runtime/ResourceManager/Operation/Internal/LoadBundleFileOperation.cs

@@ -55,11 +55,11 @@ namespace YooAsset
             _resourceManager = resourceManager;
             LoadBundleInfo = bundleInfo;
         }
-        internal override void InternalOnStart()
+        internal override void InternalStart()
         {
             _steps = ESteps.LoadFile;
         }
-        internal override void InternalOnUpdate()
+        internal override void InternalUpdate()
         {
             if (_steps == ESteps.None || _steps == ESteps.Done)
                 return;
@@ -67,11 +67,16 @@ namespace YooAsset
             if (_steps == ESteps.LoadFile)
             {
                 if (_loadBundleOp == null)
+                {
                     _loadBundleOp = LoadBundleInfo.LoadBundleFile();
+                    _loadBundleOp.StartOperation();
+                    AddChildOperation(_loadBundleOp);
+                }
 
                 if (IsWaitForAsyncComplete)
                     _loadBundleOp.WaitForAsyncComplete();
 
+                _loadBundleOp.UpdateOperation();
                 DownloadProgress = _loadBundleOp.DownloadProgress;
                 DownloadedBytes = _loadBundleOp.DownloadedBytes;
                 if (_loadBundleOp.IsDone == false)
@@ -209,14 +214,5 @@ namespace YooAsset
                 _removeList.Clear();
             }
         }
-
-        /// <summary>
-        /// 终止下载任务
-        /// </summary>
-        public void AbortDownloadOperation()
-        {
-            if (_loadBundleOp != null)
-                _loadBundleOp.AbortDownloadOperation();
-        }
     }
 }