refactor : 重构资源包裹模块

Assets/YooAsset/Runtime/DownloadSystem/DefaultDownloadRequest/UnityWebRequestDownloaderBase.cs

@@ -255,12 +255,7 @@ namespace YooAsset
             if (_watchdogAborted)
                 return;
 
-#if UNITY_2020_3_OR_NEWER
-            double realtimeSinceStartup = UnityEngine.Time.realtimeSinceStartupAsDouble;
-#else
-            double realtimeSinceStartup = UnityEngine.Time.realtimeSinceStartup;
-#endif
-
+            double realtimeSinceStartup = TimeUtility.RealtimeSinceStartup;
             if (DownloadedBytes != _lastDownloadBytes)
             {
                 _lastDownloadBytes = DownloadedBytes;

Assets/YooAsset/Runtime/DownloadSystem/DefaultDownloadRequest/VirtualFileDownloader.cs

@@ -87,7 +87,7 @@ namespace YooAsset
             if (Status == EDownloadRequestStatus.None)
             {
                 Status = EDownloadRequestStatus.Running;
-                _lastUpdateTime = GetUnityEngineRealtime();
+                _lastUpdateTime = TimeUtility.RealtimeSinceStartup;
             }
         }
 
@@ -99,7 +99,7 @@ namespace YooAsset
             if (Status != EDownloadRequestStatus.Running)
                 return;
 
-            double currentTime = GetUnityEngineRealtime();
+            double currentTime = TimeUtility.RealtimeSinceStartup;
             double deltaTime = currentTime - _lastUpdateTime;
             _lastUpdateTime = currentTime;
 
@@ -137,14 +137,5 @@ namespace YooAsset
         public void Dispose()
         {
         }
-
-        private double GetUnityEngineRealtime()
-        {
-#if UNITY_2020_3_OR_NEWER
-            return UnityEngine.Time.realtimeSinceStartupAsDouble;
-#else
-            return UnityEngine.Time.realtimeSinceStartup;
-#endif
-        }
     }
 }

Assets/YooAsset/Runtime/DownloadSystem/DownloadSystemDefine.cs

@@ -2,100 +2,6 @@ using System.Collections.Generic;
 
 namespace YooAsset
 {
-    /// <summary>
-    /// 下载器结束
-    /// </summary>
-    public struct DownloaderFinishData
-    {
-        /// <summary>
-        /// 所属包裹名称
-        /// </summary>
-        public string PackageName;
-
-        /// <summary>
-        /// 是否成功
-        /// </summary>
-        public bool Succeed;
-    }
-
-    /// <summary>
-    /// 下载器相关的更新数据
-    /// </summary>
-    public struct DownloadUpdateData
-    {
-        /// <summary>
-        /// 所属包裹名称
-        /// </summary>
-        public string PackageName;
-
-        /// <summary>
-        /// 下载进度 (0-1f)
-        /// </summary>
-        public float Progress;
-
-        /// <summary>
-        /// 下载文件总数
-        /// </summary>
-        public int TotalDownloadCount;
-
-        /// <summary>
-        /// 当前完成的下载文件数量
-        /// </summary>
-        public int CurrentDownloadCount;
-
-        /// <summary>
-        /// 下载数据总大小（单位：字节）
-        /// </summary>
-        public long TotalDownloadBytes;
-
-        /// <summary>
-        /// 当前完成的下载数据大小（单位：字节）
-        /// </summary>
-        public long CurrentDownloadBytes;
-    }
-
-    /// <summary>
-    /// 下载器相关的错误数据
-    /// </summary>
-    public struct DownloadErrorData
-    {
-        /// <summary>
-        /// 所属包裹名称
-        /// </summary>
-        public string PackageName;
-
-        /// <summary>
-        /// 下载失败的文件名称
-        /// </summary>
-        public string FileName;
-
-        /// <summary>
-        /// 错误信息
-        /// </summary>
-        public string ErrorInfo;
-    }
-
-    /// <summary>
-    /// 下载器相关的文件数据
-    /// </summary>
-    public struct DownloadFileData
-    {
-        /// <summary>
-        /// 所属包裹名称
-        /// </summary>
-        public string PackageName;
-
-        /// <summary>
-        /// 下载的文件名称
-        /// </summary>
-        public string FileName;
-
-        /// <summary>
-        /// 下载的文件大小
-        /// </summary>
-        public long FileSize;
-    }
-
     /// <summary>
     /// 导入文件的信息
     /// </summary>

Assets/YooAsset/Runtime/DownloadSystem/README.md

@@ -41,20 +41,20 @@ DownloadSystem 的职责是提供“可替换后端 + 统一请求接口 + 轮
 
 ```
 ┌─────────────────────────────────────────────────────────┐
-│                    上层调用者                            │
-│              (FileSystem / ResourceManager)              │
+│                    上层调用者                             │
+│              (FileSystem / ResourceManager)             │
 └─────────────────────────┬───────────────────────────────┘
                           │
 ┌─────────────────────────▼───────────────────────────────┐
-│                  IDownloadBackend                        │
+│                  IDownloadBackend                       │
 │                    (后端接口)                            │
-│         定义网络库合约，工厂模式创建请求                   │
+│         定义网络库合约，工厂模式创建请求                     │
 └─────────────────────────┬───────────────────────────────┘
                           │
 ┌─────────────────────────▼───────────────────────────────┐
-│                  IDownloadRequest                        │
+│                  IDownloadRequest                       │
 │                    (请求接口)                            │
-│           轮询式生命周期管理，状态机驱动                   │
+│           轮询式生命周期管理，状态机驱动                     │
 └─────────────────────────┬───────────────────────────────┘
                           │
 ┌─────────────────────────▼───────────────────────────────┐
@@ -244,16 +244,6 @@ public struct DownloadSimulateRequestArgs
 }
 ```
 
-### 回调数据结构体
-
-| 结构体 | 用途 | 关键字段 |
-|--------|------|----------|
-| `DownloaderFinishData` | 下载完成回调 | `PackageName`, `Succeed` |
-| `DownloadUpdateData` | 进度更新回调 | `Progress`, `TotalDownloadBytes`, `CurrentDownloadBytes` |
-| `DownloadErrorData` | 下载错误回调 | `FileName`, `ErrorInfo` |
-| `DownloadFileData` | 文件完成回调 | `FileName`, `FileSize` |
-| `ImportFileInfo` | 导入文件元数据 | `FilePath`, `BundleName`, `BundleGUID` |
-
 ---
 
 ## 核心类说明

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

@@ -108,14 +108,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -108,14 +108,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -107,7 +107,7 @@ namespace YooAsset
         internal override void InternalWaitForAsyncComplete()
         {
             //注意：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！
-            InternalUpdate();
+            RunOnceExecution();
         }
         public override void UnSuspendLoad()
         {

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

@@ -108,14 +108,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -109,14 +109,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -88,14 +88,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -113,7 +113,7 @@ namespace YooAsset
         internal override void InternalWaitForAsyncComplete()
         {
             //注意：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！
-            InternalUpdate();
+            RunOnceExecution();
         }
         public override void UnSuspendLoad()
         {

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

@@ -100,14 +100,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -131,14 +131,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 
@@ -204,14 +197,141 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
+            RunBatchExecution();
+        }
+    }
+
+#if TUANJIE_1_7_OR_NEWER
+    /// <summary>
+    /// 加载团结文件
+    /// </summary>
+    internal class DBFSLoadInstantBundleOperation : FSLoadBundleOperation
+    {
+        private enum ESteps
+        {
+            None,
+            LoadInstantBundle,
+            CheckResult,
+            Done,
+        }
+
+        private readonly DefaultBuildinFileSystem _fileSystem;
+        private readonly PackageBundle _bundle;
+        private AssetBundleCreateRequest _createRequest;
+        private AssetBundle _assetBundle;
+        private Stream _managedStream;
+        private ESteps _steps = ESteps.None;
+
+
+        internal DBFSLoadInstantBundleOperation(DefaultBuildinFileSystem fileSystem, PackageBundle bundle)
+        {
+            _fileSystem = fileSystem;
+            _bundle = bundle;
+        }
+        internal override void InternalStart()
+        {
+            DownloadProgress = 1f;
+            DownloadedBytes = _bundle.FileSize;
+            _steps = ESteps.LoadInstantBundle;
+        }
+        internal override void InternalUpdate()
+        {
+            if (_steps == ESteps.None || _steps == ESteps.Done)
+                return;
+
+            if (_steps == ESteps.LoadInstantBundle)
             {
-                if (ExecuteWhileDone())
+                if (_bundle.Encrypted)
+                {
+                    if (_fileSystem.DecryptionServices == null)
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"The {nameof(IDecryptionServices)} is null !";
+                        YooLogger.Error(Error);
+                        return;
+                    }
+                }
+
+                if (IsWaitForAsyncComplete)
+                {
+                    if (_bundle.Encrypted)
+                    {
+                        var decryptResult = _fileSystem.LoadEncryptedAssetBundle(_bundle);
+                        _assetBundle = decryptResult.Result;
+                        _managedStream = decryptResult.ManagedStream;
+                    }
+                    else
+                    {
+                        string filePath = _fileSystem.GetBuildinFileLoadPath(_bundle);
+                        _assetBundle = AssetBundle.LoadFromFile(filePath);
+                    }
+                }
+                else
+                {
+                    if (_bundle.Encrypted)
+                    {
+                        var decryptResult = _fileSystem.LoadEncryptedAssetBundleAsync(_bundle);
+                        _createRequest = decryptResult.CreateRequest;
+                        _managedStream = decryptResult.ManagedStream;
+                    }
+                    else
+                    {
+                        string filePath = _fileSystem.GetBuildinFileLoadPath(_bundle);
+                        _createRequest = AssetBundle.LoadFromFileAsync(filePath);
+                    }
+                }
+
+                _steps = ESteps.CheckResult;
+            }
+
+            if (_steps == ESteps.CheckResult)
+            {
+                if (_createRequest != null)
+                {
+                    if (IsWaitForAsyncComplete)
+                    {
+                        // 强制挂起主线程（注意：该操作会很耗时）
+                        YooLogger.Warning("Suspend the main thread to load unity bundle.");
+                        _assetBundle = _createRequest.assetBundle;
+                    }
+                    else
+                    {
+                        if (_createRequest.isDone == false)
+                            return;
+                        _assetBundle = _createRequest.assetBundle;
+                    }
+                }
+
+                if (_assetBundle == null)
+                {
+                    if (_bundle.Encrypted)
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"Failed to load encrypted buildin asset bundle file : {_bundle.BundleName}";
+                        YooLogger.Error(Error);
+                    }
+                    else
+                    {
+                        _steps = ESteps.Done;
+                        Status = EOperationStatus.Failed;
+                        Error = $"Failed to load buildin asset bundle file : {_bundle.BundleName}";
+                        YooLogger.Error(Error);
+                    }
+                }
+                else
                 {
                     _steps = ESteps.Done;
-                    break;
+                    Result = new AssetBundleResult(_fileSystem, _bundle, _assetBundle, _managedStream);
+                    Status = EOperationStatus.Succeed;
                 }
             }
         }
+        internal override void InternalWaitForAsyncComplete()
+        {
+            RunBatchExecution();
+        }
     }
+#endif
 }

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

@@ -262,14 +262,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 
@@ -419,14 +412,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -124,14 +124,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
         internal override void InternalAbort()
         {

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/Scheduler/DownloadAndCacheLocalFileOperation.cs

@@ -98,6 +98,10 @@ namespace YooAsset
             // 检测下载结果
             if (_steps == ESteps.CheckRequest)
             {
+                //TODO 更新下载后台，防止无限挂起
+                if (IsWaitForAsyncComplete)
+                    _fileSystem.DownloadBackend.Update();
+
                 DownloadProgress = _request.DownloadProgress;
                 DownloadedBytes = _request.DownloadedBytes;
                 Progress = DownloadProgress;
@@ -177,23 +181,12 @@ namespace YooAsset
         internal override void InternalAbort()
         {
             if (_request != null)
-                _request.AbortRequest();
+                _request.Dispose();
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                //TODO 更新下载后台，防止无限挂起
-                _fileSystem.DownloadBackend.Update();
-
-                //TODO 等待导入或解压本地文件完毕，该操作会挂起主线程！
-                InternalUpdate();
-                if (IsDone)
-                    break;
-
-                //TODO 短暂休眠避免完全卡死
-                System.Threading.Thread.Sleep(1);
-            }
+            //TODO 等待导入或解压本地文件完毕，该操作会挂起主线程！
+            RunUntilCompletion();
         }
     }
 }

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/Scheduler/DownloadAndCacheRemoteFileOperation.cs

@@ -144,7 +144,7 @@ namespace YooAsset
         internal override void InternalAbort()
         {
             if (_request != null)
-                _request.AbortRequest();
+                _request.Dispose();
         }
         internal override void InternalWaitForAsyncComplete()
         {

Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/Scheduler/DownloadSchedulerOperation.cs

@@ -119,23 +119,16 @@ namespace YooAsset
         }
 
         /// <summary>
-        /// 中止所有下载任务
-        /// </summary>
-        public void AbortAll()
-        {
-            foreach (var valuePair in _downloaders)
-            {
-                valuePair.Value.AbortOperation();
-            }
-            _downloaders.Clear();
-        }
-
-        /// <summary>
-        /// 释放资源
+        /// 释放下载资源
         /// </summary>
         public void Dispose()
         {
-            AbortAll();
+            foreach (var valuePair in _downloaders)
+            {
+                var operation = valuePair.Value;
+                operation.AbortOperation();
+            }
+            _downloaders.Clear();
         }
 
         /// <summary>

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

@@ -17,7 +17,7 @@ namespace YooAsset
 
         private readonly DefaultCacheFileSystem _fileSystem;
         private IEnumerator<string> _filesEnumerator = null;
-        private float _verifyStartTime;
+        private double _verifyStartTime;
         private ESteps _steps = ESteps.None;
 
         /// <summary>
@@ -33,7 +33,7 @@ namespace YooAsset
         internal override void InternalStart()
         {
             _steps = ESteps.Prepare;
-            _verifyStartTime = UnityEngine.Time.realtimeSinceStartup;
+            _verifyStartTime = TimeUtility.RealtimeSinceStartup;
         }
         internal override void InternalUpdate()
         {
@@ -58,7 +58,7 @@ namespace YooAsset
 
                 _steps = ESteps.Done;
                 Status = EOperationStatus.Succeed;
-                float costTime = UnityEngine.Time.realtimeSinceStartup - _verifyStartTime;
+                double costTime = TimeUtility.RealtimeSinceStartup - _verifyStartTime;
                 YooLogger.Log($"Search cache files elapsed time {costTime:f1} seconds");
             }
         }

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

@@ -25,7 +25,7 @@ namespace YooAsset
         private List<VerifyFileElement> _verifyingList;
         private int _verifyMaxNum;
         private int _verifyTotalCount;
-        private float _verifyStartTime;
+        private double _verifyStartTime;
         private int _succeedCount;
         private int _failedCount;
         private ESteps _steps = ESteps.None;
@@ -40,7 +40,7 @@ namespace YooAsset
         internal override void InternalStart()
         {
             _steps = ESteps.InitVerify;
-            _verifyStartTime = UnityEngine.Time.realtimeSinceStartup;
+            _verifyStartTime = TimeUtility.RealtimeSinceStartup;
         }
         internal override void InternalUpdate()
         {
@@ -84,7 +84,7 @@ namespace YooAsset
                 {
                     _steps = ESteps.Done;
                     Status = EOperationStatus.Succeed;
-                    float costTime = UnityEngine.Time.realtimeSinceStartup - _verifyStartTime;
+                    double costTime = TimeUtility.RealtimeSinceStartup - _verifyStartTime;
                     YooLogger.Log($"Verify cache files elapsed time {costTime:f1} seconds");
                 }
 

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

@@ -69,16 +69,8 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                //TODO 等待子线程验证文件完毕，该操作会挂起主线程！
-                InternalUpdate();
-                if (IsDone)
-                    break;
-
-                //TODO 短暂休眠避免完全卡死
-                System.Threading.Thread.Sleep(1);
-            }
+            //TODO 等待子线程验证文件完毕，该操作会挂起主线程！
+            RunUntilCompletion();
         }
 
         private void VerifyInThread(object obj)

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

@@ -142,14 +142,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
     }
 }

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

@@ -91,7 +91,7 @@ namespace YooAsset
                 _steps = ESteps.Done;
                 Status = EOperationStatus.Failed;
                 Error = "WebGL platform not support sync load method !";
-                UnityEngine.Debug.LogError(Error);
+                YooLogger.Error(Error);
             }
         }
     }

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

@@ -91,7 +91,7 @@ namespace YooAsset
                 _steps = ESteps.Done;
                 Status = EOperationStatus.Failed;
                 Error = "WebGL platform not support sync load method !";
-                UnityEngine.Debug.LogError(Error);
+                YooLogger.Error(Error);
             }
         }
     }

Assets/YooAsset/Runtime/OperationSystem/AsyncOperationBase.cs

@@ -10,7 +10,7 @@ namespace YooAsset
     {
         private List<AsyncOperationBase> _childs;
         private Action<AsyncOperationBase> _callback;
-        private int _whileFrame = 1000;
+        private uint _priority = 0;
 
         /// <summary>
         /// 等待异步执行完成
@@ -35,10 +35,28 @@ namespace YooAsset
             }
         }
 
+        /// <summary>
+        /// 标记脏（用于调度器检测并重排）
+        /// </summary>
+        internal bool IsDirty { set; get; } = false;
+
         /// <summary>
         /// 任务优先级
         /// </summary>
-        public uint Priority { set; get; } = 0;
+        public uint Priority
+        {
+            set
+            {
+                if (_priority == value)
+                    return;
+                _priority = value;
+                IsDirty = true;
+            }
+            get
+            {
+                return _priority;
+            }
+        }
 
         /// <summary>
         /// 任务状态
@@ -122,7 +140,7 @@ namespace YooAsset
         }
         internal virtual void InternalWaitForAsyncComplete()
         {
-            throw new System.NotImplementedException(this.GetType().Name);
+            throw new YooInternalException($"InternalWaitForAsyncComplete() not implemented : {this.GetType().Name}");
         }
         internal virtual string InternalGetDesc()
         {
@@ -137,9 +155,19 @@ namespace YooAsset
             if (_childs == null)
                 _childs = new List<AsyncOperationBase>(10);
 
-#if UNITY_EDITOR
+#if UNITY_EDITOR || DEBUG
+            if (child == null)
+                throw new YooInternalException("The child node is null !");
+
+            if (ReferenceEquals(child, this))
+                throw new YooInternalException("The child node cannot be itself !");
+
             if (_childs.Contains(child))
                 throw new YooInternalException($"The child node {child.GetType().Name} already exists !");
+
+            // 禁止形成环依赖
+            if (WouldCreateCycle(child))
+                throw new YooInternalException($"AddChildOperation would create a cycle : {this.GetType().Name} -> {child.GetType().Name}");
 #endif
 
             _childs.Add(child);
@@ -153,7 +181,10 @@ namespace YooAsset
             if (_childs == null)
                 return;
 
-#if UNITY_EDITOR
+#if UNITY_EDITOR || DEBUG
+            if (child == null)
+                throw new YooInternalException("The child node is null !");
+
             if (_childs.Contains(child) == false)
                 throw new YooInternalException($"The child node {child.GetType().Name} not exists !");
 #endif
@@ -182,7 +213,16 @@ namespace YooAsset
                 DebugBeginRecording();
 
                 // 开始任务
-                InternalStart();
+                try
+                {
+                    InternalStart();
+                }
+                catch (Exception ex)
+                {
+                    Status = EOperationStatus.Failed;
+                    Error = ex.ToString();
+                    YooLogger.Error($"Exception in {this.GetType().Name}.InternalStart : {ex}");
+                }
             }
         }
 
@@ -197,7 +237,18 @@ namespace YooAsset
                 DebugUpdateRecording();
 
                 // 更新任务
-                InternalUpdate();
+                // 注意：兜底隔离机制
+                // 说明：检测的异常源包含：I/O（解压/读写权限/磁盘满），平台差异等
+                try
+                {
+                    InternalUpdate();
+                }
+                catch (Exception ex)
+                {
+                    Status = EOperationStatus.Failed;
+                    Error = ex.ToString();
+                    YooLogger.Error($"Exception in {this.GetType().Name}.InternalUpdate : {ex}");
+                }
             }
 
             if (IsDone && IsFinish == false)
@@ -226,12 +277,15 @@ namespace YooAsset
                 Error = "user abort";
                 YooLogger.Warning($"Async operation {this.GetType().Name} has been aborted !");
             }
+
+            //注意：强制收尾，确保Task能完成
+            FinishOperation();
         }
 
         /// <summary>
         /// 强制结束异步任务
         /// </summary>
-        internal void FinishOperation()
+        private void FinishOperation()
         {
             if (IsFinish == false)
             {
@@ -243,6 +297,7 @@ namespace YooAsset
 
                 try
                 {
+                    //TODO 单个回调异常会阻断后续订阅者
                     _callback?.Invoke(this);
                 }
                 catch (Exception ex)
@@ -259,25 +314,59 @@ namespace YooAsset
         }
 
         /// <summary>
-        /// 执行While循环
+        /// 执行一次更新逻辑
         /// </summary>
-        protected bool ExecuteWhileDone()
+        protected void RunOnceExecution()
         {
-            if (IsDone == false)
+            if (IsDone)
+                return;
+
+            UpdateOperation();
+        }
+
+        /// <summary>
+        /// 批量执行一定次数的更新逻辑
+        /// </summary>
+        /// <param name="count">次数</param>
+        protected void RunBatchExecution(int count = 1000)
+        {
+            if (IsDone)
+                return;
+
+            int runCount = count;
+            while (true)
             {
                 // 执行更新逻辑
-                InternalUpdate();
+                UpdateOperation();
+                if (IsDone)
+                    break;
 
                 // 当执行次数用完时
-                _whileFrame--;
-                if (_whileFrame <= 0)
-                {
-                    Status = EOperationStatus.Failed;
-                    Error = $"Operation {this.GetType().Name} failed to wait for async complete !";
-                    YooLogger.Error(Error);
-                }
+                runCount--;
+                if (runCount <= 0)
+                    break;
+            }
+        }
+
+        /// <summary>
+        /// 无限次数的执行更新逻辑，直到任务完成
+        /// 注意：该方法会阻塞主线程
+        /// </summary>
+        /// <param name="sleepMS">休眠时长</param>
+        protected void RunUntilCompletion(int sleepMS = 1)
+        {
+            if (IsDone)
+                return;
+
+            while (true)
+            {
+                UpdateOperation();
+                if (IsDone)
+                    break;
+
+                // 注意： 短暂休眠避免完全占用CPU资源
+                System.Threading.Thread.Sleep(sleepMS);
             }
-            return IsDone;
         }
 
         /// <summary>
@@ -285,11 +374,7 @@ namespace YooAsset
         /// </summary>
         public void WaitForAsyncComplete()
         {
-            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();
@@ -298,12 +383,19 @@ namespace YooAsset
             if (IsWaitForAsyncComplete == false)
             {
                 IsWaitForAsyncComplete = true;
-                InternalWaitForAsyncComplete();
 
-#if UNITY_EDITOR
                 if (IsDone == false)
-                    throw new YooInternalException($"WaitForAsyncComplete() must complete operation: {this.GetType().Name}");
-#endif
+                    InternalWaitForAsyncComplete();
+
+                if (IsDone == false)
+                {
+                    Status = EOperationStatus.Failed;
+                    Error = $"Operation {this.GetType().Name} failed to wait for async complete !";
+                    YooLogger.Error(Error);
+                }
+
+                //注意：强制收尾，确保Task能完成
+                FinishOperation();
             }
         }
 
@@ -311,7 +403,7 @@ namespace YooAsset
         /// <summary>
         /// 开始的时间
         /// </summary>
-        public string BeginTime = string.Empty;
+        public string BeginTime { protected set; get; }
 
         /// <summary>
         /// 处理耗时（单位：毫秒）
@@ -326,7 +418,7 @@ namespace YooAsset
         {
             if (_watch == null)
             {
-                BeginTime = SpawnTimeToString(UnityEngine.Time.realtimeSinceStartup);
+                BeginTime = SpawnTimeToString(TimeUtility.RealtimeSinceStartup);
                 _watch = Stopwatch.StartNew();
             }
         }
@@ -350,14 +442,51 @@ namespace YooAsset
             }
         }
 
-        private string SpawnTimeToString(float spawnTime)
+        private string SpawnTimeToString(double spawnTime)
         {
-            float h = UnityEngine.Mathf.FloorToInt(spawnTime / 3600f);
-            float m = UnityEngine.Mathf.FloorToInt(spawnTime / 60f - h * 60f);
-            float s = UnityEngine.Mathf.FloorToInt(spawnTime - m * 60f - h * 3600f);
+            double h = System.Math.Floor(spawnTime / 3600);
+            double m = System.Math.Floor(spawnTime / 60 - h * 60);
+            double s = System.Math.Floor(spawnTime - m * 60 - h * 3600);
             return h.ToString("00") + ":" + m.ToString("00") + ":" + s.ToString("00");
         }
+        private bool WouldCreateCycle(AsyncOperationBase child)
+        {
+            const int maxVisited = 4096;
+            var stack = new Stack<AsyncOperationBase>();
+            var visited = new HashSet<AsyncOperationBase>();
+            stack.Push(child);
 
+            while (stack.Count > 0)
+            {
+                var node = stack.Pop();
+                if (node == null)
+                    continue;
+
+                if (visited.Add(node) == false)
+                    continue;
+
+                if (visited.Count > maxVisited)
+                    throw new YooInternalException("Child operation graph is too large, cycle check aborted !");
+
+                if (ReferenceEquals(node, this))
+                    return true;
+
+                if (node._childs == null)
+                    continue;
+
+                for (int i = 0; i < node._childs.Count; i++)
+                {
+                    stack.Push(node._childs[i]);
+                }
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// 获取调试信息
+        /// 注意：递归构建子树存在深度风险
+        /// </summary>
         internal DebugOperationInfo GetDebugOperationInfo()
         {
             var operationInfo = new DebugOperationInfo();

Assets/YooAsset/Runtime/OperationSystem/GameAsyncOperation.cs

@@ -1,25 +0,0 @@
-
-namespace YooAsset
-{
-    public abstract class GameAsyncOperation : AsyncOperationBase
-    {
-        internal override void InternalStart()
-        {
-            OnStart();
-        }
-        internal override void InternalUpdate()
-        {
-            OnUpdate();
-        }
-
-        /// <summary>
-        /// 异步操作开始
-        /// </summary>
-        protected abstract void OnStart();
-
-        /// <summary>
-        /// 异步操作更新
-        /// </summary>
-        protected abstract void OnUpdate();
-    }
-}

Assets/YooAsset/Runtime/OperationSystem/OperationScheduler.cs

@@ -10,6 +10,7 @@ namespace YooAsset
     {
         private readonly List<AsyncOperationBase> _operations = new List<AsyncOperationBase>(100);
         private readonly List<AsyncOperationBase> _newList = new List<AsyncOperationBase>(100);
+        private uint _priority = 0;
 
         /// <summary>
         /// 所属包裹名称
@@ -19,7 +20,23 @@ namespace YooAsset
         /// <summary>
         /// 调度器优先级（值越大越优先）
         /// </summary>
-        public int Priority { private set; get; }
+        public uint Priority
+        {
+            get { return _priority; }
+            set
+            {
+                if (_priority != value)
+                {
+                    _priority = value;
+                    IsDirty = true;
+                }
+            }
+        }
+
+        /// <summary>
+        /// 优先级是否已变更（需要重新排序）
+        /// </summary>
+        public bool IsDirty { set; get; } = false;
 
         /// <summary>
         /// 创建顺序（用于同优先级稳定排序）
@@ -27,10 +44,9 @@ namespace YooAsset
         public int CreateIndex { private set; get; }
 
 
-        public OperationScheduler(string packageName, int priority, int createIndex)
+        public OperationScheduler(string packageName, int createIndex)
         {
             PackageName = packageName;
-            Priority = priority;
             CreateIndex = createIndex;
         }
 
@@ -41,9 +57,6 @@ namespace YooAsset
         {
             _newList.Add(operation);
             operation.StartOperation();
-
-            // 通知开始回调
-            OperationSystem.InvokeStartCallback(PackageName, operation);
         }
 
         /// <summary>
@@ -58,31 +71,29 @@ namespace YooAsset
                 if (operation.IsFinish)
                 {
                     _operations.RemoveAt(i);
-
-                    // 通知完成回调
-                    OperationSystem.InvokeFinishCallback(PackageName, operation);
                 }
             }
 
             // 添加新增的异步操作
             if (_newList.Count > 0)
             {
-                bool sorting = false;
-                foreach (var operation in _newList)
-                {
-                    if (operation.Priority > 0)
-                    {
-                        sorting = true;
-                        break;
-                    }
-                }
-
                 _operations.AddRange(_newList);
                 _newList.Clear();
+            }
 
-                // 重新排序优先级
-                if (sorting)
-                    _operations.Sort();
+            // 检测是否需要执行排序
+            bool isDirty = false;
+            foreach (var operation in _operations)
+            {
+                if (operation.IsDirty)
+                {
+                    operation.IsDirty = false;
+                    isDirty = true;
+                }
+            }
+            if (isDirty)
+            {
+                _operations.Sort();
             }
 
             // 更新进行中的异步操作
@@ -109,7 +120,6 @@ namespace YooAsset
             foreach (var operation in _newList)
             {
                 operation.AbortOperation();
-                operation.FinishOperation(); //注意：强制收尾，确保Task能完成
             }
             _newList.Clear();
 
@@ -117,7 +127,6 @@ namespace YooAsset
             foreach (var operation in _operations)
             {
                 operation.AbortOperation();
-                operation.FinishOperation(); //注意：强制收尾，确保Task能完成
             }
             _operations.Clear();
         }

Assets/YooAsset/Runtime/OperationSystem/OperationSystem.cs

@@ -5,7 +5,7 @@ using System.Diagnostics;
 
 namespace YooAsset
 {
-    internal class OperationSystem
+    internal static class OperationSystem
     {
 #if UNITY_EDITOR
         [UnityEngine.RuntimeInitializeOnLoadMethod(UnityEngine.RuntimeInitializeLoadType.SubsystemRegistration)]
@@ -16,24 +16,36 @@ namespace YooAsset
 #endif
 
         // 全局调度器名称
-        public const string GLOBAL_SCHEDULER_NAME = "";
+        public const string GLOBAL_SCHEDULER_NAME = "YOOASSET_GLOBAL_SCHEDULER";
 
         private static readonly Dictionary<string, OperationScheduler> _schedulerDic = new Dictionary<string, OperationScheduler>(100);
         private static readonly List<OperationScheduler> _schedulerList = new List<OperationScheduler>(100);
-        private static bool _schedulerListDirty = false;
+        private static bool _isInitialize = false;
         private static int _createIndex = 0;
 
-        private static Action<string, AsyncOperationBase> _startCallback = null;
-        private static Action<string, AsyncOperationBase> _finishCallback = null;
-
         // 计时器相关
         private static Stopwatch _watch;
         private static long _frameTime;
+        private static long _maxTimeSlice = long.MaxValue;
 
         /// <summary>
         /// 异步操作系统的每帧最大执行预算（毫秒）
         /// </summary>
-        public static long MaxTimeSlice { set; get; } = long.MaxValue;
+        public static long MaxTimeSlice
+        {
+            set
+            {
+                if (value < 10)
+                {
+                    _maxTimeSlice = 10;
+                    YooLogger.Warning($"MaxTimeSlice minimum value is 10 milliseconds.");
+                }
+                else
+                {
+                    _maxTimeSlice = value;
+                }
+            }
+        }
 
         /// <summary>
         /// 异步操作系统是否繁忙
@@ -45,11 +57,11 @@ namespace YooAsset
                 if (_watch == null)
                     return false;
 
-                if (MaxTimeSlice == long.MaxValue)
+                if (_maxTimeSlice == long.MaxValue)
                     return false;
 
                 // 注意 : 单次调用开销约1微秒
-                return _watch.ElapsedMilliseconds - _frameTime >= MaxTimeSlice;
+                return _watch.ElapsedMilliseconds - _frameTime >= _maxTimeSlice;
             }
         }
 
@@ -59,10 +71,14 @@ namespace YooAsset
         /// </summary>
         public static void Initialize()
         {
-            _watch = Stopwatch.StartNew();
+            if (_isInitialize == false)
+            {
+                _isInitialize = true;
+                _watch = Stopwatch.StartNew();
 
-            // 创建全局调度器
-            CreatePackageScheduler(GLOBAL_SCHEDULER_NAME, 0);
+                // 创建全局调度器
+                CreatePackageScheduler(GLOBAL_SCHEDULER_NAME, uint.MaxValue);
+            }
         }
 
         /// <summary>
@@ -70,10 +86,21 @@ namespace YooAsset
         /// </summary>
         public static void Update()
         {
-            // 重新排序调度器
-            if (_schedulerListDirty)
+            if (_isInitialize == false)
+                return;
+
+            // 检测是否需要执行排序
+            bool isDirty = false;
+            foreach (var scheduler in _schedulerList)
+            {
+                if (scheduler.IsDirty)
+                {
+                    scheduler.IsDirty = false;
+                    isDirty = true;
+                }
+            }
+            if (isDirty)
             {
-                _schedulerListDirty = false;
                 _schedulerList.Sort();
             }
 
@@ -95,6 +122,9 @@ namespace YooAsset
         /// </summary>
         public static void DestroyAll()
         {
+            _isInitialize = false;
+            YooLogger.Log("Operation system destroy all !");
+
             // 清空所有调度器
             foreach (var scheduler in _schedulerList)
             {
@@ -102,11 +132,8 @@ namespace YooAsset
             }
             _schedulerDic.Clear();
             _schedulerList.Clear();
-            _schedulerListDirty = false;
             _createIndex = 0;
 
-            _startCallback = null;
-            _finishCallback = null;
             _watch = null;
             _frameTime = 0;
             MaxTimeSlice = long.MaxValue;
@@ -115,24 +142,29 @@ namespace YooAsset
         /// <summary>
         /// 创建包裹调度器
         /// </summary>
-        internal static void CreatePackageScheduler(string packageName, int priority)
+        public static OperationScheduler CreatePackageScheduler(string packageName, uint priority)
         {
+            DebugCheckInitialize(packageName);
+
             if (_schedulerDic.ContainsKey(packageName))
             {
                 throw new YooInternalException($"Package scheduler already exists: {packageName}");
             }
 
-            var scheduler = new OperationScheduler(packageName, priority, _createIndex++);
+            var scheduler = new OperationScheduler(packageName, _createIndex++);
             _schedulerDic.Add(packageName, scheduler);
             _schedulerList.Add(scheduler);
-            _schedulerListDirty = true;
+            scheduler.Priority = priority;
+            return scheduler;
         }
 
         /// <summary>
         /// 销毁包裹调度器
         /// </summary>
-        internal static void DestroyPackageScheduler(string packageName)
+        public static void DestroyPackageScheduler(string packageName)
         {
+            DebugCheckInitialize(packageName);
+
             // 不允许销毁默认调度器
             if (packageName == GLOBAL_SCHEDULER_NAME)
             {
@@ -152,6 +184,8 @@ namespace YooAsset
         /// </summary>
         public static void ClearPackageOperation(string packageName)
         {
+            DebugCheckInitialize(packageName);
+
             var scheduler = GetScheduler(packageName);
             scheduler.ClearAll();
         }
@@ -161,40 +195,32 @@ namespace YooAsset
         /// </summary>
         public static void StartOperation(string packageName, AsyncOperationBase operation)
         {
+            DebugCheckInitialize(packageName);
+
             var scheduler = GetScheduler(packageName);
             scheduler.StartOperation(operation);
         }
 
         /// <summary>
-        /// 监听任务开始
+        /// 设置调度器优先级
         /// </summary>
-        public static void RegisterStartCallback(Action<string, AsyncOperationBase> callback)
+        public static void SetSchedulerPriority(string packageName, uint priority)
         {
-            _startCallback = callback;
+            DebugCheckInitialize(packageName);
+
+            var scheduler = GetScheduler(packageName);
+            scheduler.Priority = priority;
         }
 
         /// <summary>
-        /// 监听任务结束
+        /// 获取调度器优先级
         /// </summary>
-        public static void RegisterFinishCallback(Action<string, AsyncOperationBase> callback)
+        public static uint GetSchedulerPriority(string packageName)
         {
-            _finishCallback = callback;
-        }
+            DebugCheckInitialize(packageName);
 
-        /// <summary>
-        /// 触发任务开始回调
-        /// </summary>
-        internal static void InvokeStartCallback(string packageName, AsyncOperationBase operation)
-        {
-            _startCallback?.Invoke(packageName, operation);
-        }
-
-        /// <summary>
-        /// 触发任务完成回调
-        /// </summary>
-        internal static void InvokeFinishCallback(string packageName, AsyncOperationBase operation)
-        {
-            _finishCallback?.Invoke(packageName, operation);
+            var scheduler = GetScheduler(packageName);
+            return scheduler.Priority;
         }
 
         /// <summary>
@@ -202,32 +228,34 @@ namespace YooAsset
         /// </summary>
         private static OperationScheduler GetScheduler(string packageName)
         {
-            // 空包名路由到默认调度器
-            if (string.IsNullOrEmpty(packageName))
-                packageName = GLOBAL_SCHEDULER_NAME;
-
             if (_schedulerDic.TryGetValue(packageName, out var scheduler))
             {
                 return scheduler;
             }
 
             // 严格模式：非默认包裹必须先创建调度器
-            throw new YooInternalException($"Package scheduler not found: {packageName}. Please call YooAssets.CreatePackage() first!");
+            throw new YooInternalException($"Operation scheduler not found: {packageName}.");
         }
 
         #region 调试信息
         internal static List<DebugOperationInfo> GetDebugOperationInfos(string packageName)
         {
-            // 空包名路由到默认调度器
-            if (string.IsNullOrEmpty(packageName))
-                packageName = GLOBAL_SCHEDULER_NAME;
+            DebugCheckInitialize(packageName);
 
-            if (_schedulerDic.TryGetValue(packageName, out var scheduler))
-            {
-                return scheduler.GetDebugOperationInfos();
-            }
+            var scheduler = GetScheduler(packageName);
+            return scheduler.GetDebugOperationInfos();
+        }
+        #endregion
 
-            return new List<DebugOperationInfo>();
+        #region 调试方法
+        [Conditional("DEBUG")]
+        private static void DebugCheckInitialize(string packageName)
+        {
+            if (string.IsNullOrWhiteSpace(packageName))
+                throw new YooInternalException("Package name is null or empty.");
+
+            if (_isInitialize == false)
+                throw new YooInternalException($"{nameof(OperationSystem)} not initialized !");
         }
         #endregion
     }

Assets/YooAsset/Runtime/OperationSystem/README.md

@@ -32,23 +32,23 @@ OperationSystem 是 YooAsset 资源管理系统的**异步操作调度核心**
 
 ```
 ┌─────────────────────────────────────────────────────────┐
-│                    上层调用者                            │
+│                    上层调用者                             │
 │         (ResourceManager / FileSystem / 业务层)          │
 └─────────────────────────┬───────────────────────────────┘
                           │ StartOperation()
 ┌─────────────────────────▼───────────────────────────────┐
-│                   OperationSystem                        │
+│                   OperationSystem                       │
 │                     (调度器)                             │
 │  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐      │
-│  │  优先级队列  │  │  时间切片   │  │  回调通知   │      │
+│  │  优先级队列  │  │  时间切片     │  │  回调通知     │      │
 │  └─────────────┘  └─────────────┘  └─────────────┘      │
 └─────────────────────────┬───────────────────────────────┘
                           │ UpdateOperation()
 ┌─────────────────────────▼───────────────────────────────┐
-│                  AsyncOperationBase                      │
+│                  AsyncOperationBase                     │
 │                    (操作基类)                            │
 │  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐      │
-│  │  状态机     │  │  子任务管理  │  │  异步模式   │      │
+│  │  状态机     │   │  子任务管理   │  │  异步模式    │      │
 │  └─────────────┘  └─────────────┘  └─────────────┘      │
 └─────────────────────────────────────────────────────────┘
 ```
@@ -56,8 +56,8 @@ OperationSystem 是 YooAsset 资源管理系统的**异步操作调度核心**
 ### 核心组件
 
 - **OperationSystem**: 静态调度器，管理所有操作的执行
+- **OperationScheduler**: 包裹级调度器，维护操作队列并负责更新调度
 - **AsyncOperationBase**: 异步操作基类，定义生命周期和状态
-- **GameAsyncOperation**: 游戏层操作基类，提供更友好的 API
 - **EOperationStatus**: 操作状态枚举
 
 ---
@@ -68,8 +68,8 @@ OperationSystem 是 YooAsset 资源管理系统的**异步操作调度核心**
 OperationSystem/
 ├── EOperationStatus.cs        # 操作状态枚举
 ├── AsyncOperationBase.cs      # 异步操作基类
+├── OperationScheduler.cs      # 包裹级调度器
 ├── OperationSystem.cs         # 异步操作调度器
-└── GameAsyncOperation.cs      # 游戏层操作基类
 ```
 
 ---
@@ -113,12 +113,21 @@ None ─────────────────► Processing ───
 | `Status` | `EOperationStatus` | 当前状态 |
 | `Error` | `string` | 错误信息（失败时） |
 | `Progress` | `float` | 处理进度（0-1） |
-| `PackageName` | `string` | 所属包裹名称 |
 | `IsDone` | `bool` | 是否已完成（Succeed 或 Failed） |
 | `Task` | `Task` | 用于 async/await |
 | `BeginTime` | `string` | 开始时间（调试用） |
 | `ProcessTime` | `long` | 处理耗时毫秒（调试用） |
 
+> 说明：`AsyncOperationBase` 本身不保存包裹名称；包裹名称由 `OperationSystem.StartOperation(packageName, operation)` 传入，并由 `OperationScheduler` 维护。
+
+#### 内部协作：时间切片（`IsBusy`）
+
+为配合 `OperationSystem.MaxTimeSlice` 的时间切片预算，`AsyncOperationBase` 提供了内部属性 `IsBusy`（`internal`）用于任务在 `InternalUpdate()` 内主动让出本帧预算。
+
+- 推荐用法：在 `InternalUpdate()` 内部（或内部子步骤）在执行重逻辑前判断 `IsBusy`，若繁忙则 `return`，把工作拆到下一帧继续执行。
+- 同步等待特殊处理：当调用了 `WaitForAsyncComplete()` 进入同步等待阶段时，`IsBusy` 会强制返回 `false`，避免因时间切片判断导致同步等待无法推进。
+- 注意：`WaitForAsyncComplete()` 会阻塞主线程，应谨慎使用；同步等待阶段不受时间切片保护，可能带来卡顿。
+
 #### 公共事件
 
 ```csharp
@@ -150,14 +159,16 @@ public void WaitForAsyncComplete();
 #### 子任务管理
 
 ```csharp
-// 子任务列表
-internal readonly List<AsyncOperationBase> Childs;
-
-// 添加/移除子任务
+// 添加/移除子任务（内部使用）
 internal void AddChildOperation(AsyncOperationBase child);
 internal void RemoveChildOperation(AsyncOperationBase child);
 ```
 
+**调用约束（重要）：**
+- 仅允许在 Unity 主线程调用（与 `OperationSystem.Update()` 的调度线程一致）。
+- 不要在 `InternalUpdate()` 正在遍历/处理中途频繁增删子任务；推荐在任务启动阶段完成子任务挂接，或在确保无并发修改风险的安全点调整。
+- `AbortOperation()` 会递归中止子任务，子任务的生命周期由父任务统一管理；避免在 `Completed` 回调里再去修改子任务关系，防止时序混乱。
+
 ---
 
 ### OperationSystem（调度器）
@@ -206,61 +217,36 @@ public static void ClearPackageOperation(string packageName);
 /// 启动异步操作
 /// </summary>
 public static void StartOperation(string packageName, AsyncOperationBase operation);
+
+/// <summary>
+/// 设置调度器优先级
+/// </summary>
+public static void SetSchedulerPriority(string packageName, uint priority);
+
+/// <summary>
+/// 获取调度器优先级
+/// </summary>
+public static uint GetSchedulerPriority(string packageName);
 ```
 
+#### 包裹调度说明
+
+- `packageName` 不允许为空（`null` / `""`），否则会抛出异常。
+- 若需要使用全局调度器，请传入 `OperationSystem.GLOBAL_SCHEDULER_NAME`（`Initialize()` 时自动创建）。
+- `packageName` 为非全局调度器名称时，必须先通过 `YooAssets.CreatePackage(packageName)` 创建包裹（内部会注册对应 `OperationScheduler`），否则会抛出异常。
+
 #### 回调监听
 
-```csharp
-/// <summary>
-/// 注册任务开始回调
-/// </summary>
-public static void RegisterStartCallback(Action<string, AsyncOperationBase> callback);
+OperationSystem **当前未提供**全局任务开始/结束回调的注册接口。
 
-/// <summary>
-/// 注册任务结束回调
-/// </summary>
-public static void RegisterFinishCallback(Action<string, AsyncOperationBase> callback);
-```
-
----
-
-### GameAsyncOperation（游戏层基类）
-
-继承 `AsyncOperationBase`，为业务层提供更友好的 API。
+如需监听任务结束（推荐），请直接订阅具体任务的 `Completed` 事件：
 
 ```csharp
-public abstract class GameAsyncOperation : AsyncOperationBase
+var operation = package.LoadAssetAsync<GameObject>(location);
+operation.Completed += op =>
 {
-    /// <summary>
-    /// 异步操作开始
-    /// </summary>
-    protected abstract void OnStart();
-
-    /// <summary>
-    /// 异步操作更新
-    /// </summary>
-    protected abstract void OnUpdate();
-
-    /// <summary>
-    /// 异步操作终止
-    /// </summary>
-    protected abstract void OnAbort();
-
-    /// <summary>
-    /// 异步等待完成（可选重写）
-    /// </summary>
-    protected virtual void OnWaitForAsyncComplete();
-
-    /// <summary>
-    /// 异步操作系统是否繁忙
-    /// </summary>
-    protected bool IsBusy();
-
-    /// <summary>
-    /// 终止异步操作
-    /// </summary>
-    protected void Abort();
-}
+    // TODO : 根据 op.Status 判断成功/失败
+};
 ```
 
 ---
@@ -339,15 +325,37 @@ void LoadAssetSync()
 
 操作按 `Priority` 属性降序排列，优先级高的操作先执行。
 
+#### 操作优先级
+
 ```csharp
 var operation = package.LoadAssetAsync<GameObject>(location);
 operation.Priority = 100;  // 设置高优先级
 ```
 
+#### 包裹优先级
+
+通过 `ResourcePackage.PackagePriority` 可以设置包裹的调度器优先级，值越大越优先更新。
+
+```csharp
+// 创建包裹时指定优先级
+var package = YooAssets.CreatePackage("MyPackage", 100);
+
+// 运行时动态调整优先级
+package.PackagePriority = 200;
+
+// 获取当前优先级
+uint priority = package.PackagePriority;
+```
+
+**使用场景：**
+- 多包裹场景下，可根据游戏状态动态调整包裹优先级
+- 例如：进入战斗时提高战斗资源包的优先级，退出战斗时恢复默认优先级
+
 **排序规则：**
-- 新操作添加时检查是否需要排序
-- 仅当存在非零优先级时触发排序
-- 使用 `List.Sort()` 进行原地排序
+- 新操作添加时：若新增队列存在非零优先级，则触发排序
+- 运行中修改 `Priority`：调度器会在每帧 `Update()` 的排序阶段检测 `IsDirty` 并触发重排；若在某个操作的 `InternalUpdate()` 内修改（本帧排序已完成），则新的优先级会延后一帧生效（可能与预期不符）
+- 若期望本帧生效：请尽量在任务入队前或本帧调度器 `Update()` 开始前设置 `Priority`，避免在 `InternalUpdate()` 内临时调整
+- 排序使用 `List.Sort()` 进行原地排序；频繁修改优先级会带来额外排序开销，建议按需使用
 
 ### 时间切片
 
@@ -358,6 +366,10 @@ operation.Priority = 100;  // 设置高优先级
 OperationSystem.MaxTimeSlice = 8;
 ```
 
+**操作侧协作建议：**
+- 在操作的 `InternalUpdate()` 中使用 `IsBusy`（`AsyncOperationBase` 的内部属性）进行“自愿让出”，将重任务拆分到多帧执行。
+- 在同步等待（`WaitForAsyncComplete()`）阶段，`IsBusy` 会强制返回 `false`，以保证同步等待推进；此时需要自行评估卡顿风险。
+
 **执行流程：**
 
 ```
@@ -420,24 +432,29 @@ OperationSystem.MaxTimeSlice = 8;
 ### 调试信息结构
 
 ```csharp
+[Serializable]
 internal struct DebugOperationInfo
 {
-    public string OperationName;   // 操作类型名
-    public string OperationDesc;   // 操作描述
+    public string OperationName;   // 任务名称
+    public string OperationDesc;   // 任务说明
     public uint Priority;          // 优先级
-    public float Progress;         // 进度
-    public string BeginTime;       // 开始时间
-    public long ProcessTime;       // 处理耗时（毫秒）
-    public string Status;          // 状态
-    public List<DebugOperationInfo> Childs;  // 子操作
+    public float Progress;         // 任务进度
+    public string BeginTime;       // 任务开始的时间
+    public long ProcessTime;       // 处理耗时（单位：毫秒）
+    public string Status;          // 任务状态
+    public List<DebugOperationInfo> Childs;  // 子任务列表（注意：JsonUtility 序列化深度限制）
 }
 ```
 
+> 说明：该结构体真实定义位于 `Runtime/DiagnosticSystem/DebugOperationInfo.cs`，这里仅展示关键字段以便理解。
+
 ### 获取调试信息
 
 ```csharp
-// 获取指定包裹的所有操作信息
-var infos = OperationSystem.GetDebugOperationInfos("DefaultPackage");
+// 获取指定包裹的所有操作信息（内部调试接口）
+// packageName 不允许为空；全局调度器请使用 OperationSystem.GLOBAL_SCHEDULER_NAME
+// 非全局包裹需先 YooAssets.CreatePackage(packageName)
+var infos = OperationSystem.GetDebugOperationInfos(OperationSystem.GLOBAL_SCHEDULER_NAME);
 
 foreach (var info in infos)
 {
@@ -457,105 +474,6 @@ Debug.Log($"处理耗时: {operation.ProcessTime}ms");
 
 ---
 
-## 使用示例
-
-### 自定义异步操作
-
-```csharp
-public class MyCustomOperation : GameAsyncOperation
-{
-    private int _step = 0;
-
-    protected override void OnStart()
-    {
-        // 初始化操作
-        _step = 0;
-    }
-
-    protected override void OnUpdate()
-    {
-        // 检查系统是否繁忙（时间切片）
-        if (IsBusy())
-            return;
-
-        // 执行步骤
-        switch (_step)
-        {
-            case 0:
-                // 第一步
-                Progress = 0.3f;
-                _step = 1;
-                break;
-            case 1:
-                // 第二步
-                Progress = 0.6f;
-                _step = 2;
-                break;
-            case 2:
-                // 完成
-                Status = EOperationStatus.Succeed;
-                break;
-        }
-    }
-
-    protected override void OnAbort()
-    {
-        // 清理资源
-    }
-}
-```
-
-### 启动自定义操作
-
-```csharp
-var operation = new MyCustomOperation();
-OperationSystem.StartOperation("DefaultPackage", operation);
-
-// 使用回调
-operation.Completed += (op) =>
-{
-    if (op.Status == EOperationStatus.Succeed)
-        Debug.Log("操作成功");
-};
-
-// 或使用 await
-await operation.Task;
-```
-
-### 带子任务的操作
-
-```csharp
-public class ParentOperation : GameAsyncOperation
-{
-    private ChildOperation _child;
-
-    protected override void OnStart()
-    {
-        _child = new ChildOperation();
-        AddChildOperation(_child);  // 添加子任务
-        OperationSystem.StartOperation(PackageName, _child);
-    }
-
-    protected override void OnUpdate()
-    {
-        if (_child.IsDone)
-        {
-            if (_child.Status == EOperationStatus.Succeed)
-                Status = EOperationStatus.Succeed;
-            else
-                Status = EOperationStatus.Failed;
-        }
-    }
-
-    protected override void OnAbort()
-    {
-        // 子任务会自动中止
-    }
-}
-```
-
----
-
 ## 设计模式
 
 ### 模板方法模式
@@ -589,7 +507,7 @@ AsyncOperationBase
 
 ### 组合模式
 
-通过 `Childs` 列表支持父子操作关系：
+通过内部子任务列表支持父子操作关系：
 
 ```
 ParentOperation
@@ -608,10 +526,6 @@ IEnumerator + IComparable<AsyncOperationBase>
               │
               ▼
     AsyncOperationBase (抽象基类)
-              │
-              ├── GameAsyncOperation (游戏层基类)
-              │         │
-              │         └── [业务层自定义操作]
               │
               └── [YooAsset 内部操作]
                       │
@@ -632,4 +546,4 @@ IEnumerator + IComparable<AsyncOperationBase>
 4. **子任务中止**：父操作中止时会自动中止所有子操作
 5. **回调异常**：`Completed` 回调中的异常会被捕获并记录，不会中断系统
 6. **编辑器重置**：编辑器中使用 `RuntimeInitializeOnLoadMethod` 自动重置状态
-7. **循环保护**：`WaitForAsyncComplete()` 有 1000 帧上限，防止无限循环
+7. **循环保护**：在 `InternalWaitForAsyncComplete()` 中建议使用 `RunBatchExecution()`（默认 1000 次）限制单次推进次数，避免陷入无限循环或长时间占用主线程

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

@@ -62,6 +62,9 @@ namespace YooAsset
                     return;
                 }
 
+                if (IsWaitForAsyncComplete)
+                    _handle.WaitForAsyncComplete();
+
                 if (_handle.IsDone == false)
                     return;
 
@@ -138,18 +141,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                // 等待句柄完成
-                if (_handle != null)
-                    _handle.WaitForAsyncComplete();
-
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
         internal override string InternalGetDesc()
         {

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

@@ -127,14 +127,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
         internal override string InternalGetDesc()
         {

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

@@ -53,14 +53,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
         internal override string InternalGetDesc()
         {

Assets/YooAsset/Runtime/ResourceManager/Provider/ProviderOperation.cs

@@ -183,14 +183,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
         internal override string InternalGetDesc()
         {

Assets/YooAsset/Runtime/ResourcePackage/EBuildBundleType.cs

@@ -22,5 +22,10 @@ namespace YooAsset
         /// 原生文件
         /// </summary>
         RawBundle = 3,
+        
+        /// <summary>
+        /// 团结资源包
+        /// </summary>
+        InstantBundle = 4,
     }
 }

Assets/YooAsset/Runtime/ResourcePackage/Operation/DownloaderOperation.cs

@@ -3,13 +3,115 @@ using System.Collections.Generic;
 
 namespace YooAsset
 {
+    #region 下载器相关类型定义
+    /// <summary>
+    /// 下载器结束
+    /// </summary>
+    public struct DownloaderFinishData
+    {
+        /// <summary>
+        /// 所属包裹名称
+        /// </summary>
+        public string PackageName;
+
+        /// <summary>
+        /// 是否成功
+        /// </summary>
+        public bool Succeed;
+    }
+
+    /// <summary>
+    /// 下载器相关的更新数据
+    /// </summary>
+    public struct DownloadUpdateData
+    {
+        /// <summary>
+        /// 所属包裹名称
+        /// </summary>
+        public string PackageName;
+
+        /// <summary>
+        /// 下载进度 (0-1f)
+        /// </summary>
+        public float Progress;
+
+        /// <summary>
+        /// 下载文件总数
+        /// </summary>
+        public int TotalDownloadCount;
+
+        /// <summary>
+        /// 当前完成的下载文件数量
+        /// </summary>
+        public int CurrentDownloadCount;
+
+        /// <summary>
+        /// 下载数据总大小（单位：字节）
+        /// </summary>
+        public long TotalDownloadBytes;
+
+        /// <summary>
+        /// 当前完成的下载数据大小（单位：字节）
+        /// </summary>
+        public long CurrentDownloadBytes;
+    }
+
+    /// <summary>
+    /// 下载器相关的错误数据
+    /// </summary>
+    public struct DownloadErrorData
+    {
+        /// <summary>
+        /// 所属包裹名称
+        /// </summary>
+        public string PackageName;
+
+        /// <summary>
+        /// 下载失败的文件名称
+        /// </summary>
+        public string FileName;
+
+        /// <summary>
+        /// 错误信息
+        /// </summary>
+        public string ErrorInfo;
+    }
+
+    /// <summary>
+    /// 下载器相关的文件数据
+    /// </summary>
+    public struct DownloadFileData
+    {
+        /// <summary>
+        /// 所属包裹名称
+        /// </summary>
+        public string PackageName;
+
+        /// <summary>
+        /// 资源包名称
+        /// </summary>
+        public string BundleName;
+
+        /// <summary>
+        /// 文件名称
+        /// </summary>
+        public string FileName;
+
+        /// <summary>
+        /// 文件大小
+        /// </summary>
+        public long FileSize;
+    }
+    #endregion
+
     public abstract class DownloaderOperation : AsyncOperationBase
     {
         private enum ESteps
         {
             None,
             Check,
-            Loading,
+            Downloading,
+            Finish,
             Done,
         }
 
@@ -127,15 +229,37 @@ namespace YooAsset
                 {
                     _steps = ESteps.Done;
                     Status = EOperationStatus.Failed;
-                    Error = "Download list is null.";
+                    Error = "Download bundle list is null.";
+
+                    if (DownloadFinishCallback != null)
+                    {
+                        var data = new DownloaderFinishData();
+                        data.PackageName = _packageName;
+                        data.Succeed = false;
+                        DownloadFinishCallback.Invoke(data);
+                    }
+                }
+                else if (_bundleInfoList.Count == 0)
+                {
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+                    Progress = 1f;
+
+                    if (DownloadFinishCallback != null)
+                    {
+                        var data = new DownloaderFinishData();
+                        data.PackageName = _packageName;
+                        data.Succeed = true;
+                        DownloadFinishCallback.Invoke(data);
+                    }
                 }
                 else
                 {
-                    _steps = ESteps.Loading;
+                    _steps = ESteps.Downloading;
                 }
             }
 
-            if (_steps == ESteps.Loading)
+            if (_steps == ESteps.Downloading)
             {
                 // 检测下载器结果
                 _removeList.Clear();
@@ -172,7 +296,10 @@ namespace YooAsset
                 {
                     _lastDownloadBytes = downloadBytes;
                     _lastDownloadCount = _cachedDownloadCount;
-                    Progress = (float)_lastDownloadBytes / TotalDownloadBytes;
+                    if (TotalDownloadBytes == 0)
+                        Progress = (float)_lastDownloadCount / TotalDownloadCount;
+                    else
+                        Progress = (float)_lastDownloadBytes / TotalDownloadBytes;
 
                     if (DownloadUpdateCallback != null)
                     {
@@ -209,54 +336,60 @@ namespace YooAsset
                         {
                             var data = new DownloadFileData();
                             data.PackageName = _packageName;
-                            data.FileName = bundleInfo.Bundle.BundleName;
+                            data.BundleName = bundleInfo.Bundle.BundleName;
+                            data.FileName = bundleInfo.Bundle.FileName;
                             data.FileSize = bundleInfo.Bundle.FileSize;
                             DownloadFileBeginCallback.Invoke(data);
                         }
                     }
                 }
 
-                // 下载结算
+                // 下载结束
                 if (_downloaders.Count == 0)
                 {
-                    if (_failedList.Count > 0)
+                    _steps = ESteps.Finish;
+                }
+            }
+
+            if (_steps == ESteps.Finish)
+            {
+                if (_failedList.Count > 0)
+                {
+                    var failedDownloader = _failedList[0];
+                    string bundleName = failedDownloader.Bundle.BundleName;
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Failed;
+                    Error = $"Failed to download file : {bundleName}";
+
+                    if (DownloadErrorCallback != null)
                     {
-                        var failedDownloader = _failedList[0];
-                        string bundleName = failedDownloader.Bundle.BundleName;
-                        _steps = ESteps.Done;
-                        Status = EOperationStatus.Failed;
-                        Error = $"Failed to download file : {bundleName}";
-
-                        if (DownloadErrorCallback != null)
-                        {
-                            var data = new DownloadErrorData();
-                            data.PackageName = _packageName;
-                            data.FileName = bundleName;
-                            data.ErrorInfo = failedDownloader.Error;
-                            DownloadErrorCallback.Invoke(data);
-                        }
-
-                        if (DownloadFinishCallback != null)
-                        {
-                            var data = new DownloaderFinishData();
-                            data.PackageName = _packageName;
-                            data.Succeed = false;
-                            DownloadFinishCallback.Invoke(data);
-                        }
+                        var data = new DownloadErrorData();
+                        data.PackageName = _packageName;
+                        data.FileName = bundleName;
+                        data.ErrorInfo = failedDownloader.Error;
+                        DownloadErrorCallback.Invoke(data);
                     }
-                    else
-                    {
-                        // 结算成功
-                        _steps = ESteps.Done;
-                        Status = EOperationStatus.Succeed;
 
-                        if (DownloadFinishCallback != null)
-                        {
-                            var data = new DownloaderFinishData();
-                            data.PackageName = _packageName;
-                            data.Succeed = true;
-                            DownloadFinishCallback.Invoke(data);
-                        }
+                    if (DownloadFinishCallback != null)
+                    {
+                        var data = new DownloaderFinishData();
+                        data.PackageName = _packageName;
+                        data.Succeed = false;
+                        DownloadFinishCallback.Invoke(data);
+                    }
+                }
+                else
+                {
+                    // 结算成功
+                    _steps = ESteps.Done;
+                    Status = EOperationStatus.Succeed;
+
+                    if (DownloadFinishCallback != null)
+                    {
+                        var data = new DownloaderFinishData();
+                        data.PackageName = _packageName;
+                        data.Succeed = true;
+                        DownloadFinishCallback.Invoke(data);
                     }
                 }
             }

Assets/YooAsset/Runtime/ResourcePackage/Operation/Internal/DeserializeManifestOperation.cs

@@ -91,7 +91,7 @@ namespace YooAsset
                     {
                         _steps = ESteps.Done;
                         Status = EOperationStatus.Failed;
-                        Error = $"The manifest file version are not compatible : {fileVersion} != {ManifestDefine.FileVersion}";
+                        Error = $"The manifest version is lower than the minimum compatible version : {fileVer} < {ver2025_8_28}";
                         return;
                     }
 
@@ -158,7 +158,7 @@ namespace YooAsset
                         FillAssetCollection(Manifest, packageAsset, replaceAssetPath);
 
                         _packageAssetCount--;
-                        Progress = 1f - _packageAssetCount / _progressTotalValue;
+                        Progress = 1f - (_packageAssetCount / (float)_progressTotalValue);
                         if (IsBusy)
                             break;
                     }
@@ -192,7 +192,7 @@ namespace YooAsset
                         FillBundleCollection(Manifest, packageBundle);
 
                         _packageBundleCount--;
-                        Progress = 1f - _packageBundleCount / _progressTotalValue;
+                        Progress = 1f - (_packageBundleCount / (float)_progressTotalValue);
                         if (IsBusy)
                             break;
                     }
@@ -220,14 +220,7 @@ namespace YooAsset
         }
         internal override void InternalWaitForAsyncComplete()
         {
-            while (true)
-            {
-                if (ExecuteWhileDone())
-                {
-                    _steps = ESteps.Done;
-                    break;
-                }
-            }
+            RunBatchExecution();
         }
 
         private void CreateAssetCollection(PackageManifest manifest, int assetCount)

Assets/YooAsset/Runtime/ResourcePackage/PlayMode/PlayModeImpl.cs

@@ -298,7 +298,8 @@ namespace YooAsset
                 return new List<BundleInfo>();
 
             // 获取资源对象的资源包和所有依赖资源包
-            List<PackageBundle> checkList = new List<PackageBundle>();
+            HashSet<string> checkSet = new HashSet<string>();
+            List<PackageBundle> checkList = new List<PackageBundle>(assetInfos.Length);
             foreach (var assetInfo in assetInfos)
             {
                 if (assetInfo.IsInvalid)
@@ -309,15 +310,21 @@ namespace YooAsset
 
                 // 注意：如果清单里未找到资源包会抛出异常！
                 PackageBundle mainBundle = manifest.GetMainPackageBundle(assetInfo.Asset);
-                if (checkList.Contains(mainBundle) == false)
+                if (checkSet.Contains(mainBundle.BundleGUID) == false)
+                {
+                    checkSet.Add(mainBundle.BundleGUID);
                     checkList.Add(mainBundle);
+                }
 
                 // 注意：如果清单里未找到资源包会抛出异常！
                 List<PackageBundle> mainDependBundles = manifest.GetAssetAllDependencies(assetInfo.Asset);
                 foreach (var dependBundle in mainDependBundles)
                 {
-                    if (checkList.Contains(dependBundle) == false)
+                    if (checkSet.Contains(dependBundle.BundleGUID) == false)
+                    {
+                        checkSet.Add(dependBundle.BundleGUID);
                         checkList.Add(dependBundle);
+                    }
                 }
 
                 // 下载主资源包内所有资源对象依赖的资源包
@@ -326,14 +333,20 @@ namespace YooAsset
                     foreach (var otherMainAsset in mainBundle.IncludeMainAssets)
                     {
                         var otherMainBundle = manifest.GetMainPackageBundle(otherMainAsset.BundleID);
-                        if (checkList.Contains(otherMainBundle) == false)
+                        if (checkSet.Contains(otherMainBundle.BundleGUID) == false)
+                        {
+                            checkSet.Add(otherMainBundle.BundleGUID);
                             checkList.Add(otherMainBundle);
+                        }
 
                         List<PackageBundle> otherDependBundles = manifest.GetAssetAllDependencies(otherMainAsset);
                         foreach (var dependBundle in otherDependBundles)
                         {
-                            if (checkList.Contains(dependBundle) == false)
+                            if (checkSet.Contains(dependBundle.BundleGUID) == false)
+                            {
+                                checkSet.Add(dependBundle.BundleGUID);
                                 checkList.Add(dependBundle);
+                            }
                         }
                     }
                 }

Assets/YooAsset/Runtime/ResourcePackage/README.md

@@ -372,6 +372,8 @@ public class PackageBundle
 
 清单序列化工具类。
 
+> 注意：`DeserializeFromJson` 仅用于编辑器/调试用途，不保证运行时可用；运行时请优先使用二进制清单 `DeserializeFromBinary`。
+
 ```csharp
 // 验证清单数据完整性
 static bool VerifyManifestData(byte[] fileData, string hashValue);
@@ -381,6 +383,7 @@ static string SerializeToJson(PackageManifest manifest);
 static byte[] SerializeToBinary(PackageManifest manifest);
 
 // 反序列化
+// 注意：JSON 反序列化仅用于编辑器/调试用途，运行时请优先使用二进制清单。
 static PackageManifest DeserializeFromJson(string jsonContent);
 static PackageManifest DeserializeFromBinary(byte[] binaryData);
 

Assets/YooAsset/Runtime/ResourcePackage/ResourcePackage.cs

@@ -44,6 +44,15 @@ namespace YooAsset
             }
         }
 
+        /// <summary>
+        /// 包裹优先级（值越大越优先更新）
+        /// </summary>
+        public uint PackagePriority
+        {
+            get { return OperationSystem.GetSchedulerPriority(PackageName); }
+            set { OperationSystem.SetSchedulerPriority(PackageName, value); }
+        }
+        
 
         internal ResourcePackage(string packageName)
         {
@@ -213,7 +222,7 @@ namespace YooAsset
             options.ReleaseAllHandles = true;
             options.LockLoadOperation = true;
             var operation = new DestroyOperation(this, options);
-            OperationSystem.StartOperation(null, operation);
+            OperationSystem.StartOperation(OperationSystem.GLOBAL_SCHEDULER_NAME, operation);
             return operation;
         }
 
@@ -1154,7 +1163,6 @@ namespace YooAsset
         #endregion
 
         #region 调试方法
-        [Conditional("DEBUG")]
         private void DebugCheckInitialize(bool checkActiveManifest = true)
         {
             if (_initializeStatus == EOperationStatus.None)

Assets/YooAsset/Runtime/Utility/YooUtility.cs

@@ -5,6 +5,27 @@ using System.Text;
 
 namespace YooAsset
 {
+    /// <summary>
+    /// 时间工具类
+    /// </summary>
+    internal static class TimeUtility
+    {
+        /// <summary>
+        /// The real time in seconds since the game started
+        /// </summary>
+        public static double RealtimeSinceStartup
+        {
+            get
+            {
+#if UNITY_2020_3_OR_NEWER
+                return UnityEngine.Time.realtimeSinceStartupAsDouble;
+#else
+                return UnityEngine.Time.realtimeSinceStartup;
+#endif
+            }
+        }
+    }
+
     /// <summary>
     /// 路径工具类
     /// </summary>

Assets/YooAsset/Runtime/YooAssets.cs

@@ -59,6 +59,7 @@ namespace YooAsset
                 _driver.AddComponent<RemoteDebuggerInRuntime>();
 #endif
 
+                // 初始化异步操作系统
                 OperationSystem.Initialize();
             }
         }
@@ -75,8 +76,8 @@ namespace YooAsset
                 if (_driver != null)
                     GameObject.Destroy(_driver);
 
-                // 终止并清空所有包裹的异步操作
-                ClearAllPackageOperation();
+                // 销毁异步操作系统
+                OperationSystem.DestroyAll();
 
                 // 卸载所有AssetBundle
                 AssetBundle.UnloadAllAssetBundles(true);
@@ -97,18 +98,6 @@ namespace YooAsset
             }
         }
 
-        /// <summary>
-        /// 终止并清空所有包裹的异步操作
-        /// </summary>
-        internal static void ClearAllPackageOperation()
-        {
-            foreach (var package in _packages)
-            {
-                OperationSystem.ClearPackageOperation(package.PackageName);
-            }
-            OperationSystem.DestroyAll();
-        }
-
         /// <summary>
         /// 创建资源包裹
         /// </summary>
@@ -123,7 +112,7 @@ namespace YooAsset
         /// </summary>
         /// <param name="packageName">包裹名称</param>
         /// <param name="packagePriority">包裹优先级（值越大越优先更新）</param>
-        public static ResourcePackage CreatePackage(string packageName, int packagePriority)
+        public static ResourcePackage CreatePackage(string packageName, uint packagePriority)
         {
             CheckException(packageName);
             if (ContainsPackage(packageName))
@@ -218,17 +207,6 @@ namespace YooAsset
             return package != null;
         }
 
-        /// <summary>
-        /// 开启一个异步操作
-        /// </summary>
-        /// <param name="operation">异步操作对象</param>
-        public static void StartOperation(GameAsyncOperation operation)
-        {
-            // 注意：游戏业务逻辑的包裹填写为空
-            OperationSystem.StartOperation(string.Empty, operation);
-        }
-
-
         private static ResourcePackage GetPackageInternal(string packageName)
         {
             foreach (var package in _packages)
@@ -270,11 +248,6 @@ namespace YooAsset
         /// </summary>
         public static void SetOperationSystemMaxTimeSlice(long milliseconds)
         {
-            if (milliseconds < 10)
-            {
-                milliseconds = 10;
-                YooLogger.Warning($"MaxTimeSlice minimum value is 10 milliseconds.");
-            }
             OperationSystem.MaxTimeSlice = milliseconds;
         }
         #endregion

Assets/YooAsset/Runtime/YooAssetsDriver.cs

@@ -25,7 +25,7 @@ namespace YooAsset
         void OnApplicationQuit()
         {
             // 说明：在编辑器下确保播放被停止时IO类操作被终止。
-            YooAssets.ClearAllPackageOperation();
+            YooAssets.Destroy();
         }
 #endif
 

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/CopyBuildinManifestOperation.cs

@@ -7,7 +7,7 @@ using YooAsset;
 /// <summary>
 /// 拷贝内置清单文件到沙盒目录
 /// </summary>
-public class CopyBuildinManifestOperation : GameAsyncOperation
+public class CopyBuildinManifestOperation : AsyncOperationBase
 {
     private enum ESteps
     {
@@ -32,11 +32,11 @@ public class CopyBuildinManifestOperation : GameAsyncOperation
         _packageVersion = packageVersion;
         _backend = new UnityWebRequestBackend();
     }
-    protected override void OnStart()
+    internal override void InternalStart()
     {
         _steps = ESteps.CheckHashFile;
     }
-    protected override void OnUpdate()
+    internal override void InternalUpdate()
     {
         if (_steps == ESteps.None || _steps == ESteps.Done)
             return;
@@ -121,9 +121,6 @@ public class CopyBuildinManifestOperation : GameAsyncOperation
             }
         }
     }
-    protected override void OnAbort()
-    {
-    }
 
     private string GetBuildinYooRoot()
     {

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/GetBuildinPackageVersionOperation.cs

@@ -7,7 +7,7 @@ using YooAsset;
 /// <summary>
 /// 获取包体里的内置资源清单版本
 /// </summary>
-public class GetBuildinPackageVersionOperation : GameAsyncOperation
+public class GetBuildinPackageVersionOperation : AsyncOperationBase
 {
     private enum ESteps
     {
@@ -31,11 +31,11 @@ public class GetBuildinPackageVersionOperation : GameAsyncOperation
         _packageName = packageName;
         _backend = new UnityWebRequestBackend();
     }
-    protected override void OnStart()
+    internal override void InternalStart()
     {
         _steps = ESteps.GetPackageVersion;
     }
-    protected override void OnUpdate()
+    internal override void InternalUpdate()
     {
         if (_steps == ESteps.None || _steps == ESteps.Done)
             return;
@@ -68,9 +68,6 @@ public class GetBuildinPackageVersionOperation : GameAsyncOperation
             }
         }
     }
-    protected override void OnAbort()
-    {
-    }
 
     private string GetBuildinYooRoot()
     {

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/GetCacheBundleSizeOperation.cs

@@ -7,7 +7,7 @@ using YooAsset;
 /// <summary>
 /// 获取沙盒目录里缓存文件大小
 /// </summary>
-public class GetCacheBundleSizeOperation : GameAsyncOperation
+public class GetCacheBundleSizeOperation : AsyncOperationBase
 {
     private enum ESteps
     {
@@ -29,11 +29,11 @@ public class GetCacheBundleSizeOperation : GameAsyncOperation
     {
         _packageName = packageName;
     }
-    protected override void OnStart()
+    internal override void InternalStart()
     {
         _steps = ESteps.GetCacheFiles;
     }
-    protected override void OnUpdate()
+    internal override void InternalUpdate()
     {
         if (_steps == ESteps.None || _steps == ESteps.Done)
             return;
@@ -57,9 +57,6 @@ public class GetCacheBundleSizeOperation : GameAsyncOperation
             Status = EOperationStatus.Succeed;
         }
     }
-    protected override void OnAbort()
-    {
-    }
 
     private string GetCacheDirectoryRoot()
     {

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/LoadAssetsByTagOperation.cs

@@ -4,7 +4,7 @@ using System.Collections.Generic;
 using UnityEngine;
 using YooAsset;
 
-public class LoadAssetsByTagOperation<TObject> : GameAsyncOperation where TObject : UnityEngine.Object
+public class LoadAssetsByTagOperation<TObject> : AsyncOperationBase where TObject : UnityEngine.Object
 {
     private enum ESteps
     {
@@ -28,11 +28,11 @@ public class LoadAssetsByTagOperation<TObject> : GameAsyncOperation where TObjec
     {
         _tag = tag;
     }
-    protected override void OnStart()
+    internal override void InternalStart()
     {
         _steps = ESteps.LoadAssets;
     }
-    protected override void OnUpdate()
+    internal override void InternalUpdate()
     {
         if (_steps == ESteps.None || _steps == ESteps.Done)
             return;
@@ -53,7 +53,7 @@ public class LoadAssetsByTagOperation<TObject> : GameAsyncOperation where TObjec
         {
             int index = 0;
             foreach (var handle in _handles)
-            {			
+            {
                 if (handle.IsDone == false)
                 {
                     Progress = (float)index / _handles.Count;
@@ -77,7 +77,7 @@ public class LoadAssetsByTagOperation<TObject> : GameAsyncOperation where TObjec
                         string error = $"资源类型转换失败：{handle.AssetObject.name}";
                         Debug.LogError($"{error}");
                         AssetObjects.Clear();
-                        SetFinish(false, error);
+                        SetFailed(error);
                         return;
                     }
                 }
@@ -85,21 +85,23 @@ public class LoadAssetsByTagOperation<TObject> : GameAsyncOperation where TObjec
                 {
                     Debug.LogError($"{handle.LastError}");
                     AssetObjects.Clear();
-                    SetFinish(false, handle.LastError);
+                    SetFailed(handle.LastError);
                     return;
                 }
             }
 
-            SetFinish(true);
+            SetSucceed();
         }
     }
-    protected override void OnAbort()
+    private void SetSucceed()
     {
+        Status = EOperationStatus.Succeed;
+        _steps = ESteps.Done;
     }
-    private void SetFinish(bool succeed, string error = "")
+    private void SetFailed(string error)
     {
         Error = error;
-        Status = succeed ? EOperationStatus.Succeed : EOperationStatus.Failed;
+        Status = EOperationStatus.Failed;
         _steps = ESteps.Done;
     }
 

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/LoadGameObjectOperation.cs

@@ -9,12 +9,12 @@ public static class YooAssetsExtension
     public static LoadGameObjectOperation LoadGameObjectAsync(this ResourcePackage resourcePackage, string location, Vector3 position, Quaternion rotation, Transform parent, bool destroyGoOnRelease = false)
     {
         var operation = new LoadGameObjectOperation(location, position, rotation, parent, destroyGoOnRelease);
-        YooAssets.StartOperation(operation);
+        OperationSystem.StartOperation(OperationSystem.GLOBAL_SCHEDULER_NAME, operation);
         return operation;
     }
 }
 
-public class LoadGameObjectOperation : GameAsyncOperation
+public class LoadGameObjectOperation : AsyncOperationBase
 {
     private enum ESteps
     {
@@ -36,7 +36,7 @@ public class LoadGameObjectOperation : GameAsyncOperation
     /// </summary>
     public GameObject Go { private set; get; }
 
-
+    
     public LoadGameObjectOperation(string location, Vector3 position, Quaternion rotation, Transform parent, bool destroyGoOnRelease = false)
     {
         _location = location;
@@ -45,11 +45,11 @@ public class LoadGameObjectOperation : GameAsyncOperation
         _parent = parent;
         _destroyGoOnRelease = destroyGoOnRelease;
     }
-    protected override void OnStart()
+    internal override void InternalStart()
     {
         _steps = ESteps.LoadAsset;
     }
-    protected override void OnUpdate()
+    internal override void InternalUpdate()
     {
         if (_steps == ESteps.None || _steps == ESteps.Done)
             return;
@@ -79,9 +79,6 @@ public class LoadGameObjectOperation : GameAsyncOperation
             }
         }
     }
-    protected override void OnAbort()
-    {
-    }
 
     /// <summary>
     /// 释放资源句柄

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/OperationHelper.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.IO;
+using YooAsset;
+
+public class OperationHelper
+{
+    /// <summary>
+    /// 开始一个业务实现的自定义异步任务
+    /// </summary>
+    public static void StartOperation(AsyncOperationBase operation)
+    {
+        OperationSystem.StartOperation(OperationSystem.GLOBAL_SCHEDULER_NAME, operation);
+    }
+}

Assets/YooAsset/Samples~/Extension Sample/Runtime/ExtensionOperation/OperationHelper.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: ff8a96dd005f55346986f8a98aff8c99
+guid: fd52bc7cb896369498d42a12081816ee
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Assets/YooAsset/Samples~/Extension Sample/Runtime/OperationMonitor/OperationMonitor.cs

@@ -6,8 +6,6 @@ public static class OperationMonitor
 {
     public static void RegisterOperationCallback()
     {
-        OperationSystem.RegisterStartCallback(OperationStartCallback);
-        OperationSystem.RegisterFinishCallback(OperationFinishCallback);
     }
 
     private static void OperationStartCallback(string packageName, AsyncOperationBase operation)

Assets/YooAsset/Samples~/Space Shooter/GameScript/Runtime/Boot.cs

@@ -19,7 +19,7 @@ public class Boot : MonoBehaviour
         Application.runInBackground = true;
         DontDestroyOnLoad(this.gameObject);
     }
-    IEnumerator Start()
+    void Start()
     {
         // 游戏管理器
         GameManager.Instance.Behaviour = this;
@@ -34,16 +34,12 @@ public class Boot : MonoBehaviour
         var go = Resources.Load<GameObject>("PatchWindow");
         GameObject.Instantiate(go);
 
-        // 开始补丁更新流程
-        var operation = new PatchOperation("DefaultPackage", PlayMode);
-        YooAssets.StartOperation(operation);
-        yield return operation;
-
-        // 设置默认的资源包
-        var gamePackage = YooAssets.GetPackage("DefaultPackage");
-        YooAssets.SetDefaultPackage(gamePackage);
-
-        // 切换到主页面场景
-        SceneEventDefine.ChangeToHomeScene.SendEventMessage();
+        // 补丁更新流程
+        PatchManager.Create("DefaultPackage", PlayMode);
+        PatchManager.Start();
+    }
+    private void Update()
+    {
+        PatchManager.Update();
     }
 }

Assets/YooAsset/Samples~/Space Shooter/GameScript/Runtime/PatchLogic/FsmNode/FsmStartGame.cs

@@ -2,19 +2,23 @@
 using System.Collections.Generic;
 using UnityEngine;
 using UniFramework.Machine;
+using YooAsset;
 
 internal class FsmStartGame : IStateNode
 {
-    private PatchOperation _owner;
-
     void IStateNode.OnCreate(StateMachine machine)
     {
-        _owner = machine.Owner as PatchOperation;
     }
     void IStateNode.OnEnter()
     {
         PatchEventDefine.PatchStepsChange.SendEventMessage("开始游戏！");
-        _owner.SetFinish();
+
+        // 设置默认的资源包
+        var gamePackage = YooAssets.GetPackage("DefaultPackage");
+        YooAssets.SetDefaultPackage(gamePackage);
+
+        // 切换到主页面场景
+        SceneEventDefine.ChangeToHomeScene.SendEventMessage();
     }
     void IStateNode.OnUpdate()
     {

Assets/YooAsset/Samples~/Space Shooter/GameScript/Runtime/PatchLogic/PatchManager.cs

@@ -3,24 +3,13 @@ using UniFramework.Machine;
 using UniFramework.Event;
 using YooAsset;
 
-public class PatchOperation : GameAsyncOperation
+public static class PatchManager
 {
-    private enum ESteps
+    private static readonly EventGroup _eventGroup = new EventGroup();
+    private static StateMachine _machine;
+
+    public static void Create(string packageName, EPlayMode playMode)
     {
-        None,
-        Update,
-        Done,
-    }
-
-    private readonly EventGroup _eventGroup = new EventGroup();
-    private readonly StateMachine _machine;
-    private readonly string _packageName;
-    private ESteps _steps = ESteps.None;
-
-    public PatchOperation(string packageName, EPlayMode playMode)
-    {
-        _packageName = packageName;
-
         // 注册监听事件
         _eventGroup.AddListener<UserEventDefine.UserTryInitialize>(OnHandleEventMessage);
         _eventGroup.AddListener<UserEventDefine.UserBeginDownloadWebFiles>(OnHandleEventMessage);
@@ -29,7 +18,7 @@ public class PatchOperation : GameAsyncOperation
         _eventGroup.AddListener<UserEventDefine.UserTryDownloadWebFiles>(OnHandleEventMessage);
 
         // 创建状态机
-        _machine = new StateMachine(this);
+        _machine = new StateMachine(null);
         _machine.AddNode<FsmInitializePackage>();
         _machine.AddNode<FsmRequestPackageVersion>();
         _machine.AddNode<FsmUpdatePackageManifest>();
@@ -42,37 +31,19 @@ public class PatchOperation : GameAsyncOperation
         _machine.SetBlackboardValue("PackageName", packageName);
         _machine.SetBlackboardValue("PlayMode", playMode);
     }
-    protected override void OnStart()
+    public static void Start()
     {
-        _steps = ESteps.Update;
         _machine.Run<FsmInitializePackage>();
     }
-    protected override void OnUpdate()
+    public static void Update()
     {
-        if (_steps == ESteps.None || _steps == ESteps.Done)
-            return;
-
-        if (_steps == ESteps.Update)
-        {
-            _machine.Update();
-        }
-    }
-    protected override void OnAbort()
-    {
-    }
-
-    public void SetFinish()
-    {
-        _steps = ESteps.Done;
-        _eventGroup.RemoveAllListener();
-        Status = EOperationStatus.Succeed;
-        Debug.Log($"Package {_packageName} patch done !");
+        _machine.Update();
     }
 
     /// <summary>
     /// 接收事件
     /// </summary>
-    private void OnHandleEventMessage(IEventMessage message)
+    private static void OnHandleEventMessage(IEventMessage message)
     {
         if (message is UserEventDefine.UserTryInitialize)
         {