refactor : 重构异步操作模块

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

@@ -255,12 +255,7 @@ namespace YooAsset
             if (_watchdogAborted)
                 return;
 
-#if UNITY_2020_3_OR_NEWER
+            double realtimeSinceStartup = TimeUtility.RealtimeSinceStartup;
-            double realtimeSinceStartup = UnityEngine.Time.realtimeSinceStartupAsDouble;
-#else
-            double realtimeSinceStartup = UnityEngine.Time.realtimeSinceStartup;
-#endif
-
             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/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/OperationSystem/AsyncOperationBase.cs

@@ -155,9 +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);
@@ -171,7 +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
@@ -200,8 +213,17 @@ namespace YooAsset
                 DebugBeginRecording();
 
                 // 开始任务
+                try
+                {
                     InternalStart();
                 }
+                catch (Exception ex)
+                {
+                    Status = EOperationStatus.Failed;
+                    Error = ex.ToString();
+                    YooLogger.Error($"Exception in {this.GetType().Name}.InternalStart : {ex}");
+                }
+            }
         }
 
         /// <summary>
@@ -215,8 +237,19 @@ namespace YooAsset
                 DebugUpdateRecording();
 
                 // 更新任务
+                // 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)
             {
@@ -244,12 +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)
             {
@@ -261,6 +297,7 @@ namespace YooAsset
 
                 try
                 {
+                    //TODO 单个回调异常会阻断后续回调
                     _callback?.Invoke(this);
                 }
                 catch (Exception ex)
@@ -307,14 +344,9 @@ namespace YooAsset
                 // 当执行次数用完时
                 runCount--;
                 if (runCount <= 0)
-                {
-                    Status = EOperationStatus.Failed;
-                    Error = $"Operation {this.GetType().Name} failed to wait for async complete !";
-                    YooLogger.Error(Error);
                     break;
             }
         }
-        }
 
         /// <summary>
         /// 无限次数的执行更新逻辑，直到任务完成
@@ -341,11 +373,7 @@ 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();
@@ -354,7 +382,19 @@ namespace YooAsset
             if (IsWaitForAsyncComplete == false)
             {
                 IsWaitForAsyncComplete = true;
+
+                if (IsDone == false)
                     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();
             }
         }
 
@@ -362,7 +402,7 @@ 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）
@@ -377,7 +417,7 @@ namespace YooAsset
         {
             if (_watch == null)
             {
-                BeginTime = SpawnTimeToString(UnityEngine.Time.realtimeSinceStartup);
+                BeginTime = SpawnTimeToString(TimeUtility.RealtimeSinceStartup);
                 _watch = Stopwatch.StartNew();
             }
         }
@@ -401,13 +441,46 @@ namespace YooAsset
             }
         }
 
-        private string SpawnTimeToString(float spawnTime)
+        private string SpawnTimeToString(double spawnTime)
         {
-            float h = UnityEngine.Mathf.FloorToInt(spawnTime / 3600f);
+            double h = System.Math.Floor(spawnTime / 3600);
-            float m = UnityEngine.Mathf.FloorToInt(spawnTime / 60f - h * 60f);
+            double m = System.Math.Floor(spawnTime / 60 - h * 60);
-            float s = UnityEngine.Mathf.FloorToInt(spawnTime - m * 60f - h * 3600f);
+            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;
+        }
 
         internal DebugOperationInfo GetDebugOperationInfo()
         {

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;
         }
 
@@ -104,7 +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();
 
@@ -112,7 +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)]
@@ -21,7 +21,6 @@ namespace YooAsset
         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 _isInitialize = false;
-        private static bool _schedulerListDirty = false;
         private static int _createIndex = 0;
 
         // 计时器相关
@@ -56,12 +55,15 @@ namespace YooAsset
         /// 初始化异步操作系统
         /// </summary>
         public static void Initialize()
+        {
+            if (_isInitialize == false)
             {
                 _isInitialize = true;
                 _watch = Stopwatch.StartNew();
 
                 // 创建全局调度器
-            CreatePackageScheduler(GLOBAL_SCHEDULER_NAME, 0);
+                CreatePackageScheduler(GLOBAL_SCHEDULER_NAME, uint.MaxValue);
+            }
         }
 
         /// <summary>
@@ -72,10 +74,18 @@ namespace YooAsset
             if (_isInitialize == false)
                 return;
 
-            // 重新排序调度器
+            // 检测是否需要执行排序
-            if (_schedulerListDirty)
+            bool isDirty = false;
+            foreach (var scheduler in _schedulerList)
+            {
+                if (scheduler.IsDirty)
+                {
+                    scheduler.IsDirty = false;
+                    isDirty = true;
+                }
+            }
+            if (isDirty)
             {
-                _schedulerListDirty = false;
                 _schedulerList.Sort();
             }
 
@@ -97,6 +107,9 @@ 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)
             {
@@ -104,9 +117,7 @@ namespace YooAsset
             }
             _schedulerDic.Clear();
             _schedulerList.Clear();
-            _schedulerListDirty = false;
             _createIndex = 0;
-            _isInitialize = false;
 
             _watch = null;
             _frameTime = 0;
@@ -116,17 +127,20 @@ namespace YooAsset
         /// <summary>
         /// 创建包裹调度器
         /// </summary>
-        public 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>
@@ -134,6 +148,8 @@ namespace YooAsset
         /// </summary>
         public static void DestroyPackageScheduler(string packageName)
         {
+            DebugCheckInitialize(packageName);
+
             // 不允许销毁默认调度器
             if (packageName == GLOBAL_SCHEDULER_NAME)
             {
@@ -153,6 +169,8 @@ namespace YooAsset
         /// </summary>
         public static void ClearPackageOperation(string packageName)
         {
+            DebugCheckInitialize(packageName);
+
             var scheduler = GetScheduler(packageName);
             scheduler.ClearAll();
         }
@@ -162,10 +180,34 @@ namespace YooAsset
         /// </summary>
         public static void StartOperation(string packageName, AsyncOperationBase operation)
         {
+            DebugCheckInitialize(packageName);
+
             var scheduler = GetScheduler(packageName);
             scheduler.StartOperation(operation);
         }
 
+        /// <summary>
+        /// 设置调度器优先级
+        /// </summary>
+        public static void SetSchedulerPriority(string packageName, uint priority)
+        {
+            DebugCheckInitialize(packageName);
+
+            var scheduler = GetScheduler(packageName);
+            scheduler.Priority = priority;
+        }
+
+        /// <summary>
+        /// 获取调度器优先级
+        /// </summary>
+        public static uint GetSchedulerPriority(string packageName)
+        {
+            DebugCheckInitialize(packageName);
+
+            var scheduler = GetScheduler(packageName);
+            return scheduler.Priority;
+        }
+
         /// <summary>
         /// 获取调度器（严格模式）
         /// </summary>
@@ -177,15 +219,29 @@ namespace YooAsset
             }
 
             // 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)
         {
+            DebugCheckInitialize(packageName);
+
             var scheduler = GetScheduler(packageName);
             return scheduler.GetDebugOperationInfos();
         }
         #endregion
+
+        #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

@@ -217,6 +217,16 @@ 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
@@ -227,16 +237,16 @@ public static void StartOperation(string packageName, AsyncOperationBase operati
 
 #### 回调监听
 
-```csharp
+OperationSystem **当前未提供**全局任务开始/结束回调的注册接口。
-/// <summary>
-/// 注册任务开始回调
-/// </summary>
-public static void RegisterStartCallback(Action<string, AsyncOperationBase> callback);
 
-/// <summary>
+如需监听任务结束（推荐），请直接订阅具体任务的 `Completed` 事件：
-/// 注册任务结束回调
+
-/// </summary>
+```csharp
-public static void RegisterFinishCallback(Action<string, AsyncOperationBase> callback);
+var operation = package.LoadAssetAsync<GameObject>(location);
+operation.Completed += op =>
+{
+    // TODO : 根据 op.Status 判断成功/失败
+};
 ```
 
 ---
@@ -315,14 +325,36 @@ 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：若新增队列存在非零优先级，则触发排序
-- 运行时修改 `Priority`：会在下一次调度器更新时自动触发重排（即时生效，通常为下一帧）
+- 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
@@ -514,4 +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**：在 `InternalWaitForAsyncComplete()` 中如果使用 `ExecuteWhileDone()`，内部默认有 1000 次执行保护，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/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)
         {

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
+                // 销毁异步操作系统
-                ClearAllPackageOperation();
+                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))

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