update runtime code

重构了OperationSystem的机制。从列表模式修改为链模式
2026-05-26 02:30:18 +00:00 · 2025-02-25 12:18:16 +08:00
parent 400c2ccefe
commit c758aa81ff
72 changed files with 385 additions and 260 deletions
--- a/Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/AssetBundleResult.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/BundleResult/AssetBundleResult/AssetBundleResult.cs
@@ -48,25 +48,21 @@ namespace YooAsset
        public override FSLoadAssetOperation LoadAssetAsync(AssetInfo assetInfo)
        {
            var operation = new AssetBundleLoadAssetOperation(_packageBundle, _assetBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadAllAssetsOperation LoadAllAssetsAsync(AssetInfo assetInfo)
        {
            var operation = new AssetBundleLoadAllAssetsOperation(_packageBundle, _assetBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadSubAssetsOperation LoadSubAssetsAsync(AssetInfo assetInfo)
        {
            var operation = new AssetBundleLoadSubAssetsOperation(_packageBundle, _assetBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadSceneOperation LoadSceneOperation(AssetInfo assetInfo, LoadSceneParameters loadParams, bool suspendLoad)
        {
            var operation = new AssetBundleLoadSceneOperation(assetInfo, loadParams, suspendLoad);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
    }
--- a/Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/RawBundleResult.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/BundleResult/RawBundleResult/RawBundleResult.cs
@@ -32,25 +32,21 @@ namespace YooAsset
        public override FSLoadAssetOperation LoadAssetAsync(AssetInfo assetInfo)
        {
            var operation = new RawBundleLoadAssetOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadAllAssetsOperation LoadAllAssetsAsync(AssetInfo assetInfo)
        {
            var operation = new RawBundleLoadAllAssetsOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadSubAssetsOperation LoadSubAssetsAsync(AssetInfo assetInfo)
        {
            var operation = new RawBundleLoadSubAssetsOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadSceneOperation LoadSceneOperation(AssetInfo assetInfo, LoadSceneParameters loadParams, bool suspendLoad)
        {
            var operation = new RawBundleLoadSceneOperation();
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
    }
--- a/Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/VirtualBundleResult.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/BundleResult/VirtualBundleResult/VirtualBundleResult.cs
@@ -32,25 +32,21 @@ namespace YooAsset
        public override FSLoadAssetOperation LoadAssetAsync(AssetInfo assetInfo)
        {
            var operation = new VirtualBundleLoadAssetOperation(_packageBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadAllAssetsOperation LoadAllAssetsAsync(AssetInfo assetInfo)
        {
            var operation = new VirtualBundleLoadAllAssetsOperation(_packageBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadSubAssetsOperation LoadSubAssetsAsync(AssetInfo assetInfo)
        {
            var operation = new VirtualBundleLoadSubAssetsOperation(_packageBundle, assetInfo);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
        public override FSLoadSceneOperation LoadSceneOperation(AssetInfo assetInfo, LoadSceneParameters loadParams, bool suspendLoad)
        {
            var operation = new VirtualBundleLoadSceneOperation(assetInfo, loadParams, suspendLoad);
-            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
            return operation;
        }
    }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/DefaultBuildinFileSystem.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/DefaultBuildinFileSystem.cs
@@ -92,19 +92,16 @@ namespace YooAsset
        public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
        {
            var operation = new DBFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
            return operation;
        }
        public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
        {
            var operation = new DBFSLoadPackageManifestOperation(this, packageVersion);
-            OperationSystem.StartOperation(PackageName, operation);
            return operation;
        }
        public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
        {
            var operation = new DBFSRequestPackageVersionOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
            return operation;
        }
        public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
@@ -127,20 +124,17 @@ namespace YooAsset
            if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
            {
                var operation = new DBFSLoadAssetBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else if (bundle.BundleType == (int)EBuildBundleType.RawBundle)
            {
                var operation = new DBFSLoadRawBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else
            {
                string error = $"{nameof(DefaultBuildinFileSystem)} not support load bundle type : {bundle.BundleType}";
                var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
        }
@@ -194,9 +188,8 @@ namespace YooAsset
            _unpackFileSystem.SetParameter(FileSystemParametersDefine.DECRYPTION_SERVICES, DecryptionServices);
            _unpackFileSystem.OnCreate(packageName, null);
        }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
        {
-            _unpackFileSystem.OnUpdate();
        }

        public virtual bool Belong(PackageBundle bundle)
@@ -346,10 +339,13 @@ namespace YooAsset
                return false;

 #if UNITY_ANDROID
-            if (bundle.BundleType == (int)EBuildBundleType.RawBundle || bundle.Encrypted)
+            if (bundle.Encrypted)
                return true;
-            else
-                return false;
+
+            if (bundle.BundleType == (int)EBuildBundleType.RawBundle)
+                return true;
+
+            return false;
 #else
            return false;
 #endif
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSInitializeOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSInitializeOperation.cs
@@ -47,9 +47,11 @@ namespace YooAsset
                if (_copyBuildinPackageManifestOp == null)
                {
                    _copyBuildinPackageManifestOp = new CopyBuildinPackageManifestOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _copyBuildinPackageManifestOp);
+                    _copyBuildinPackageManifestOp.StartOperation();
+                    AddChildOperation(_copyBuildinPackageManifestOp);
                }

+                _copyBuildinPackageManifestOp.UpdateOperation();
                if (_copyBuildinPackageManifestOp.IsDone == false)
                    return;

@@ -68,8 +70,13 @@ namespace YooAsset
            if (_steps == ESteps.InitUnpackFileSystem)
            {
                if (_initUnpackFIleSystemOp == null)
+                {
                    _initUnpackFIleSystemOp = _fileSystem.InitializeUpackFileSystem();
+                    _initUnpackFIleSystemOp.StartOperation();
+                    AddChildOperation(_initUnpackFIleSystemOp);
+                }

+                _initUnpackFIleSystemOp.UpdateOperation();
                Progress = _initUnpackFIleSystemOp.Progress;
                if (_initUnpackFIleSystemOp.IsDone == false)
                    return;
@@ -113,9 +120,11 @@ namespace YooAsset
 #endif

                    _loadCatalogFileOp = new LoadBuildinCatalogFileOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCatalogFileOp);
+                    _loadCatalogFileOp.StartOperation();
+                    AddChildOperation(_loadCatalogFileOp);
                }

+                _loadCatalogFileOp.UpdateOperation();
                if (_loadCatalogFileOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadBundleOperation.cs
@@ -139,9 +139,6 @@ namespace YooAsset
                }
            }
        }
-        public override void AbortDownloadOperation()
-        {
-        }
    }

    /// <summary>
@@ -206,8 +203,5 @@ namespace YooAsset
                }
            }
        }
-        public override void AbortDownloadOperation()
-        {
-        }
    }
 }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSLoadPackageManifestOperation.cs
@@ -37,9 +37,11 @@ namespace YooAsset
                if (_requestBuildinPackageHashOp == null)
                {
                    _requestBuildinPackageHashOp = new RequestBuildinPackageHashOperation(_fileSystem, _packageVersion);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestBuildinPackageHashOp);
+                    _requestBuildinPackageHashOp.StartOperation();
+                    AddChildOperation(_requestBuildinPackageHashOp);
                }

+                _requestBuildinPackageHashOp.UpdateOperation();
                if (_requestBuildinPackageHashOp.IsDone == false)
                    return;

@@ -61,9 +63,11 @@ namespace YooAsset
                {
                    string packageHash = _requestBuildinPackageHashOp.PackageHash;
                    _loadBuildinPackageManifestOp = new LoadBuildinPackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadBuildinPackageManifestOp);
+                    _loadBuildinPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadBuildinPackageManifestOp);
                }

+                _loadBuildinPackageManifestOp.UpdateOperation();
                if (_loadBuildinPackageManifestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSRequestPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/DBFSRequestPackageVersionOperation.cs
@@ -33,9 +33,11 @@ namespace YooAsset
                if (_requestBuildinPackageVersionOp == null)
                {
                    _requestBuildinPackageVersionOp = new RequestBuildinPackageVersionOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestBuildinPackageVersionOp);
+                    _requestBuildinPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestBuildinPackageVersionOp);
                }

+                _requestBuildinPackageVersionOp.UpdateOperation();
                if (_requestBuildinPackageVersionOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/CopyBuildinPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/CopyBuildinPackageManifestOperation.cs
@@ -43,9 +43,11 @@ namespace YooAsset
                if (_requestBuildinPackageVersionOp == null)
                {
                    _requestBuildinPackageVersionOp = new RequestBuildinPackageVersionOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestBuildinPackageVersionOp);
+                    _requestBuildinPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestBuildinPackageVersionOp);
                }

+                _requestBuildinPackageVersionOp.UpdateOperation();
                if (_requestBuildinPackageVersionOp.IsDone == false)
                    return;

@@ -82,9 +84,11 @@ namespace YooAsset
                    string destPath = GetCopyPackageHashDestPath(_buildinPackageVersion);
                    string url = DownloadSystemHelper.ConvertToWWWPath(sourcePath);
                    _hashFileRequestOp = new UnityWebFileRequestOperation(url, destPath);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _hashFileRequestOp);
+                    _hashFileRequestOp.StartOperation();
+                    AddChildOperation(_hashFileRequestOp);
                }

+                _hashFileRequestOp.UpdateOperation();
                if (_hashFileRequestOp.IsDone == false)
                    return;

@@ -121,9 +125,11 @@ namespace YooAsset
                    string destPath = GetCopyPackageManifestDestPath(_buildinPackageVersion);
                    string url = DownloadSystemHelper.ConvertToWWWPath(sourcePath);
                    _manifestFileRequestOp = new UnityWebFileRequestOperation(url, destPath);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _manifestFileRequestOp);
+                    _manifestFileRequestOp.StartOperation();
+                    AddChildOperation(_manifestFileRequestOp);
                }

+                _manifestFileRequestOp.UpdateOperation();
                if (_manifestFileRequestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/LoadBuildinPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/LoadBuildinPackageManifestOperation.cs
@@ -47,9 +47,11 @@ namespace YooAsset
                    string filePath = _fileSystem.GetBuildinPackageManifestFilePath(_packageVersion);
                    string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                    _webDataRequestOp = new UnityWebDataRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webDataRequestOp);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
                }

+                _webDataRequestOp.UpdateOperation();
                if (_webDataRequestOp.IsDone == false)
                    return;

@@ -85,9 +87,11 @@ namespace YooAsset
                if (_deserializer == null)
                {
                    _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                }

+                _deserializer.UpdateOperation();
                Progress = _deserializer.Progress;
                if (_deserializer.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/RequestBuildinPackageHashOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/RequestBuildinPackageHashOperation.cs
@@ -42,9 +42,11 @@ namespace YooAsset
                    string filePath = _fileSystem.GetBuildinPackageHashFilePath(_packageVersion);
                    string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

+                _webTextRequestOp.UpdateOperation();
                if (_webTextRequestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/RequestBuildinPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultBuildinFileSystem/Operation/internal/RequestBuildinPackageVersionOperation.cs
@@ -40,9 +40,11 @@ namespace YooAsset
                    string filePath = _fileSystem.GetBuildinPackageVersionFilePath();
                    string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

+                _webTextRequestOp.UpdateOperation();
                if (_webTextRequestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/DefaultCacheFileSystem.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/DefaultCacheFileSystem.cs
@@ -15,13 +15,18 @@ namespace YooAsset
        protected readonly Dictionary<string, string> _bundleDataFilePathMapping = new Dictionary<string, string>(10000);
        protected readonly Dictionary<string, string> _bundleInfoFilePathMapping = new Dictionary<string, string>(10000);
        protected readonly Dictionary<string, string> _tempFilePathMapping = new Dictionary<string, string>(10000);
-        protected DefaultCacheDownloadCenter _downloadCenter;

        protected string _packageRoot;
        protected string _tempFilesRoot;
        protected string _cacheBundleFilesRoot;
        protected string _cacheManifestFilesRoot;

+        /// <summary>
+        /// 下载中心
+        /// 说明：当异步操作任务终止的时候，所有下载子任务都会一同被终止！
+        /// </summary>
+        public DownloadCenterOperation DownloadCenter { set; get; }
+
        /// <summary>
        /// 包裹名称
        /// </summary>
@@ -98,19 +103,16 @@ namespace YooAsset
        public virtual FSInitializeFileSystemOperation InitializeFileSystemAsync()
        {
            var operation = new DCFSInitializeOperation(this);
-            OperationSystem.StartOperation(PackageName, operation);
            return operation;
        }
        public virtual FSLoadPackageManifestOperation LoadPackageManifestAsync(string packageVersion, int timeout)
        {
            var operation = new DCFSLoadPackageManifestOperation(this, packageVersion, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
            return operation;
        }
        public virtual FSRequestPackageVersionOperation RequestPackageVersionAsync(bool appendTimeTicks, int timeout)
        {
            var operation = new DCFSRequestPackageVersionOperation(this, appendTimeTicks, timeout);
-            OperationSystem.StartOperation(PackageName, operation);
            return operation;
        }
        public virtual FSClearCacheFilesOperation ClearCacheFilesAsync(PackageManifest manifest, string clearMode, object clearParam)
@@ -118,64 +120,57 @@ namespace YooAsset
            if (clearMode == EFileClearMode.ClearAllBundleFiles.ToString())
            {
                var operation = new ClearAllCacheBundleFilesOperation(this);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else if (clearMode == EFileClearMode.ClearUnusedBundleFiles.ToString())
            {
                var operation = new ClearUnusedCacheBundleFilesOperation(this, manifest);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else if (clearMode == EFileClearMode.ClearBundleFilesByTags.ToString())
            {
                var operation = new ClearCacheBundleFilesByTagsOperaiton(this, manifest, clearParam);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else if (clearMode == EFileClearMode.ClearAllManifestFiles.ToString())
            {
                var operation = new ClearAllCacheManifestFilesOperation(this);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else if (clearMode == EFileClearMode.ClearUnusedManifestFiles.ToString())
            {
                var operation = new ClearUnusedCacheManifestFilesOperation(this, manifest);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else
            {
                string error = $"Invalid clear mode : {clearMode}";
                var operation = new FSClearCacheFilesCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
        }
        public virtual FSDownloadFileOperation DownloadFileAsync(PackageBundle bundle, DownloadParam param)
        {
-            return _downloadCenter.DownloadFileAsync(bundle, param);
+            var downloader = DownloadCenter.DownloadFileAsync(bundle, param);
+            downloader.Reference(); //增加下载器的引用计数
+            return downloader;
        }
        public virtual FSLoadBundleOperation LoadBundleFile(PackageBundle bundle)
        {
            if (bundle.BundleType == (int)EBuildBundleType.AssetBundle)
            {
                var operation = new DCFSLoadAssetBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else if (bundle.BundleType == (int)EBuildBundleType.RawBundle)
            {
                var operation = new DCFSLoadRawBundleOperation(this, bundle);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
            else
            {
                string error = $"{nameof(DefaultCacheFileSystem)} not support load bundle type : {bundle.BundleType}";
                var operation = new FSLoadBundleCompleteOperation(error);
-                OperationSystem.StartOperation(PackageName, operation);
                return operation;
            }
        }
@@ -231,11 +226,14 @@ namespace YooAsset
            _cacheBundleFilesRoot = PathUtility.Combine(_packageRoot, DefaultCacheFileSystemDefine.BundleFilesFolderName);
            _tempFilesRoot = PathUtility.Combine(_packageRoot, DefaultCacheFileSystemDefine.TempFilesFolderName);
            _cacheManifestFilesRoot = PathUtility.Combine(_packageRoot, DefaultCacheFileSystemDefine.ManifestFilesFolderName);
-            _downloadCenter = new DefaultCacheDownloadCenter(this);
        }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
        {
-            _downloadCenter.Update();
+            if (DownloadCenter != null)
+            {
+                DownloadCenter.AbortOperation();
+                DownloadCenter = null;
+            }
        }

        public virtual bool Belong(PackageBundle bundle)
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSInitializeOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSInitializeOperation.cs
@@ -9,6 +9,7 @@ namespace YooAsset
            CheckAppFootPrint,
            SearchCacheFiles,
            VerifyCacheFiles,
+            CreateDownloadCenter,
            Done,
        }

@@ -58,9 +59,11 @@ namespace YooAsset
                if (_searchCacheFilesOp == null)
                {
                    _searchCacheFilesOp = new SearchCacheFilesOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _searchCacheFilesOp);
+                    _searchCacheFilesOp.StartOperation();
+                    AddChildOperation(_searchCacheFilesOp);
                }

+                _searchCacheFilesOp.UpdateOperation();
                Progress = _searchCacheFilesOp.Progress;
                if (_searchCacheFilesOp.IsDone == false)
                    return;
@@ -73,17 +76,18 @@ namespace YooAsset
                if (_verifyCacheFilesOp == null)
                {
                    _verifyCacheFilesOp = new VerifyCacheFilesOperation(_fileSystem, _searchCacheFilesOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _verifyCacheFilesOp);
+                    _verifyCacheFilesOp.StartOperation();
+                    AddChildOperation(_verifyCacheFilesOp);
                }

+                _verifyCacheFilesOp.UpdateOperation();
                Progress = _verifyCacheFilesOp.Progress;
                if (_verifyCacheFilesOp.IsDone == false)
                    return;

                if (_verifyCacheFilesOp.Status == EOperationStatus.Succeed)
                {
-                    _steps = ESteps.Done;
-                    Status = EOperationStatus.Succeed;
+                    _steps = ESteps.CreateDownloadCenter;
                    YooLogger.Log($"Package '{_fileSystem.PackageName}' cached files count : {_fileSystem.FileCount}");
                }
                else
@@ -93,6 +97,18 @@ namespace YooAsset
                    Error = _verifyCacheFilesOp.Error;
                }
            }
+
+            if (_steps == ESteps.CreateDownloadCenter)
+            {
+                if (_fileSystem.DownloadCenter == null)
+                {
+                    _fileSystem.DownloadCenter = new DownloadCenterOperation(_fileSystem);
+                    OperationSystem.StartOperation(_fileSystem.PackageName, _fileSystem.DownloadCenter);
+                }
+
+                _steps = ESteps.Done;
+                Status = EOperationStatus.Succeed;
+            }
        }
    }
 }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadBundleOperation.cs
@@ -54,6 +54,9 @@ namespace YooAsset

            if (_steps == ESteps.DownloadFile)
            {
+                // 注意：下载的异步任务由管理器驱动
+                // 注意：不加到子任务列表里，防止Abort的时候将下载器直接关闭！
+                // 注意：边玩边下下载器引用计数没有Release
                if (_downloadFileOp == null)
                {
                    DownloadParam downloadParam = new DownloadParam(int.MaxValue, 60);
@@ -219,14 +222,6 @@ namespace YooAsset
                }
            }
        }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadFile)
-            {
-                if (_downloadFileOp != null)
-                    _downloadFileOp.SetAbort();
-            }
-        }
    }

    internal class DCFSLoadRawBundleOperation : FSLoadBundleOperation
@@ -276,6 +271,9 @@ namespace YooAsset

            if (_steps == ESteps.DownloadFile)
            {
+                // 注意：下载的异步任务由管理器驱动
+                // 注意：不加到子任务列表里，防止Abort的时候将下载器直接关闭！
+                // 注意：边玩边下下载器引用计数没有Release
                if (_downloadFileOp == null)
                {
                    DownloadParam downloadParam = new DownloadParam(int.MaxValue, 60);
@@ -335,13 +333,5 @@ namespace YooAsset
                }
            }
        }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadFile)
-            {
-                if (_downloadFileOp != null)
-                    _downloadFileOp.SetAbort();
-            }
-        }
    }
 }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSLoadPackageManifestOperation.cs
@@ -44,9 +44,11 @@ namespace YooAsset
                if (_downloadPackageHashOp == null)
                {
                    _downloadPackageHashOp = new DownloadPackageHashOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _downloadPackageHashOp);
+                    _downloadPackageHashOp.StartOperation();
+                    AddChildOperation(_downloadPackageHashOp);
                }

+                _downloadPackageHashOp.UpdateOperation();
                if (_downloadPackageHashOp.IsDone == false)
                    return;

@@ -67,9 +69,11 @@ namespace YooAsset
                if (_downloadPackageManifestOp == null)
                {
                    _downloadPackageManifestOp = new DownloadPackageManifestOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _downloadPackageManifestOp);
+                    _downloadPackageManifestOp.StartOperation();
+                    AddChildOperation(_downloadPackageManifestOp);
                }

+                _downloadPackageManifestOp.UpdateOperation();
                if (_downloadPackageManifestOp.IsDone == false)
                    return;

@@ -90,9 +94,11 @@ namespace YooAsset
                if (_loadCachePackageHashOp == null)
                {
                    _loadCachePackageHashOp = new LoadCachePackageHashOperation(_fileSystem, _packageVersion);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCachePackageHashOp);
+                    _loadCachePackageHashOp.StartOperation();
+                    AddChildOperation(_loadCachePackageHashOp);
                }

+                _loadCachePackageHashOp.UpdateOperation();
                if (_loadCachePackageHashOp.IsDone == false)
                    return;

@@ -115,9 +121,11 @@ namespace YooAsset
                {
                    string packageHash = _loadCachePackageHashOp.PackageHash;
                    _loadCachePackageManifestOp = new LoadCachePackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCachePackageManifestOp);
+                    _loadCachePackageManifestOp.StartOperation();
+                    AddChildOperation(_loadCachePackageManifestOp);
                }

+                _loadCachePackageManifestOp.UpdateOperation();
                Progress = _loadCachePackageManifestOp.Progress;
                if (_loadCachePackageManifestOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSRequestPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/DCFSRequestPackageVersionOperation.cs
@@ -37,9 +37,11 @@ namespace YooAsset
                if (_requestRemotePackageVersionOp == null)
                {
                    _requestRemotePackageVersionOp = new RequestRemotePackageVersionOperation(_fileSystem, _appendTimeTicks, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestRemotePackageVersionOp);
+                    _requestRemotePackageVersionOp.StartOperation();
+                    AddChildOperation(_requestRemotePackageVersionOp);
                }

+                _requestRemotePackageVersionOp.UpdateOperation();
                Progress = _requestRemotePackageVersionOp.Progress;
                if (_requestRemotePackageVersionOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs
@@ -3,33 +3,33 @@ using System.Collections.Generic;

 namespace YooAsset
 {
-    internal class DefaultCacheDownloadCenter
+    internal class DownloadCenterOperation : AsyncOperationBase
    {
        private readonly DefaultCacheFileSystem _fileSystem;
        protected readonly Dictionary<string, DefaultDownloadFileOperation> _downloaders = new Dictionary<string, DefaultDownloadFileOperation>(1000);
        protected readonly List<string> _removeDownloadList = new List<string>(1000);

-        public DefaultCacheDownloadCenter(DefaultCacheFileSystem fileSystem)
+        public DownloadCenterOperation(DefaultCacheFileSystem fileSystem)
        {
            _fileSystem = fileSystem;
        }
-
-        /// <summary>
-        /// 更新下载中心
-        /// </summary>
-        public void Update()
+        internal override void InternalStart()
+        {
+        }
+        internal override void InternalUpdate()
        {
            // 获取可移除的下载器集合
            _removeDownloadList.Clear();
            foreach (var valuePair in _downloaders)
            {
                var downloader = valuePair.Value;
+                downloader.UpdateOperation();

                // 注意：主动终止引用计数为零的下载任务
                if (downloader.RefCount <= 0)
                {
                    _removeDownloadList.Add(valuePair.Key);
-                    downloader.SetAbort();
+                    downloader.AbortOperation();
                    continue;
                }

@@ -61,7 +61,7 @@ namespace YooAsset
                        var operation = operationPair.Value;
                        if (operation.Status == EOperationStatus.None)
                        {
-                            OperationSystem.StartOperation(_fileSystem.PackageName, operation);
+                            operation.StartOperation();
                            startCount--;
                            if (startCount <= 0)
                                break;
@@ -79,7 +79,6 @@ namespace YooAsset
            // 查询旧的下载器
            if (_downloaders.TryGetValue(bundle.BundleGUID, out var oldDownloader))
            {
-                oldDownloader.Reference();
                return oldDownloader;
            }

@@ -101,13 +100,13 @@ namespace YooAsset
            if (bundle.FileSize >= _fileSystem.ResumeDownloadMinimumSize)
            {
                newDownloader = new DownloadResumeFileOperation(_fileSystem, bundle, param);
-                newDownloader.Reference();
+                AddChildOperation(newDownloader);
                _downloaders.Add(bundle.BundleGUID, newDownloader);
            }
            else
            {
                newDownloader = new DownloadNormalFileOperation(_fileSystem, bundle, param);
-                newDownloader.Reference();
+                AddChildOperation(newDownloader);
                _downloaders.Add(bundle.BundleGUID, newDownloader);
            }
            return newDownloader;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs.meta
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadCenterOperation.cs.meta
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadNormalFileOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadNormalFileOperation.cs
@@ -89,7 +89,8 @@ namespace YooAsset
            {
                var element = new TempFileElement(_tempFilePath, Bundle.FileCRC, Bundle.FileSize);
                _verifyOperation = new VerifyTempFileOperation(element);
-                OperationSystem.StartOperation(_fileSystem.PackageName, _verifyOperation);
+                _verifyOperation.StartOperation();
+                AddChildOperation(_verifyOperation);
                _steps = ESteps.CheckVerifyTempFile;
            }

@@ -99,6 +100,7 @@ namespace YooAsset
                if (IsWaitForAsyncComplete)
                    _verifyOperation.WaitForAsyncComplete();

+                _verifyOperation.UpdateOperation();
                if (_verifyOperation.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageHashOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageHashOperation.cs
@@ -58,9 +58,11 @@ namespace YooAsset
                    string fileName = YooAssetSettingsData.GetPackageHashFileName(_fileSystem.PackageName, _packageVersion);
                    string webURL = GetWebRequestURL(fileName);
                    _webFileRequestOp = new UnityWebFileRequestOperation(webURL, savePath, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webFileRequestOp);
+                    _webFileRequestOp.StartOperation();
+                    AddChildOperation(_webFileRequestOp);
                }

+                _webFileRequestOp.UpdateOperation();
                if (_webFileRequestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageManifestOperation.cs
@@ -58,9 +58,11 @@ namespace YooAsset
                    string fileName = YooAssetSettingsData.GetManifestBinaryFileName(_fileSystem.PackageName, _packageVersion);
                    string webURL = GetDownloadRequestURL(fileName);
                    _webFileRequestOp = new UnityWebFileRequestOperation(webURL, savePath, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webFileRequestOp);
+                    _webFileRequestOp.StartOperation();
+                    AddChildOperation(_webFileRequestOp);
                }

+                _webFileRequestOp.UpdateOperation();
                if (_webFileRequestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadResumeFileOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadResumeFileOperation.cs
@@ -110,7 +110,8 @@ namespace YooAsset
            {
                var element = new TempFileElement(_tempFilePath, Bundle.FileCRC, Bundle.FileSize);
                _verifyOperation = new VerifyTempFileOperation(element);
-                OperationSystem.StartOperation(_fileSystem.PackageName, _verifyOperation);
+                _verifyOperation.StartOperation();
+                AddChildOperation(_verifyOperation);
                _steps = ESteps.CheckVerifyTempFile;
            }

@@ -120,6 +121,7 @@ namespace YooAsset
                if (IsWaitForAsyncComplete)
                    _verifyOperation.WaitForAsyncComplete();

+                _verifyOperation.UpdateOperation();
                if (_verifyOperation.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/LoadCachePackageManifestOperation.cs
@@ -77,9 +77,11 @@ namespace YooAsset
                if (_deserializer == null)
                {
                    _deserializer = new DeserializeManifestOperation(_fileData);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                }

+                _deserializer.UpdateOperation();
                Progress = _deserializer.Progress;
                if (_deserializer.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/RequestRemotePackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/RequestRemotePackageVersionOperation.cs
@@ -46,9 +46,11 @@ namespace YooAsset
                    string fileName = YooAssetSettingsData.GetPackageVersionFileName(_fileSystem.PackageName);
                    string url = GetWebRequestURL(fileName);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

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

            _packageRoot = packageRoot;
        }
-        public virtual void OnUpdate()
+        public virtual void OnDestroy()
        {
        }

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSLoadBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSLoadBundleOperation.cs
@@ -72,8 +72,5 @@ namespace YooAsset
                }
            }
        }
-        public override void AbortDownloadOperation()
-        {
-        }
    }
 }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSLoadPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSLoadPackageManifestOperation.cs
@@ -37,9 +37,11 @@ namespace YooAsset
                if (_loadEditorPackageHashOpe == null)
                {
                    _loadEditorPackageHashOpe = new LoadEditorPackageHashOperation(_fileSystem, _packageVersion);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadEditorPackageHashOpe);
+                    _loadEditorPackageHashOpe.StartOperation();
+                    AddChildOperation(_loadEditorPackageHashOpe);
                }

+                _loadEditorPackageHashOpe.UpdateOperation();
                if (_loadEditorPackageHashOpe.IsDone == false)
                    return;

@@ -61,9 +63,11 @@ namespace YooAsset
                {
                    string packageHash = _loadEditorPackageHashOpe.PackageHash;
                    _loadEditorPackageManifestOp = new LoadEditorPackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadEditorPackageManifestOp);
+                    _loadEditorPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadEditorPackageManifestOp);
                }

+                _loadEditorPackageManifestOp.UpdateOperation();
                Progress = _loadEditorPackageManifestOp.Progress;
                if (_loadEditorPackageManifestOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSRequestPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/DEFSRequestPackageVersionOperation.cs
@@ -33,9 +33,11 @@ namespace YooAsset
                if (_loadEditorPackageVersionOp == null)
                {
                    _loadEditorPackageVersionOp = new LoadEditorPackageVersionOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadEditorPackageVersionOp);
+                    _loadEditorPackageVersionOp.StartOperation();
+                    AddChildOperation(_loadEditorPackageVersionOp);
                }

+                _loadEditorPackageVersionOp.UpdateOperation();
                if (_loadEditorPackageVersionOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/LoadEditorPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/LoadEditorPackageManifestOperation.cs
@@ -77,9 +77,11 @@ namespace YooAsset
                if (_deserializer == null)
                {
                    _deserializer = new DeserializeManifestOperation(_fileData);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                }

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

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadBundleOperation.cs
@@ -41,15 +41,18 @@ namespace YooAsset
                    if (_bundle.Encrypted)
                    {
                        _downloadAssetBundleOp = new DownloadWebEncryptAssetBundleOperation(true, _fileSystem.DecryptionServices, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                    }
                    else
                    {
                        _downloadAssetBundleOp = new DownloadWebNormalAssetBundleOperation(_fileSystem.DisableUnityWebCache, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                    }
                }

+                _downloadAssetBundleOp.UpdateOperation();
                DownloadProgress = _downloadAssetBundleOp.DownloadProgress;
                DownloadedBytes = _downloadAssetBundleOp.DownloadedBytes;
                Progress = _downloadAssetBundleOp.Progress;
@@ -90,13 +93,5 @@ namespace YooAsset
                UnityEngine.Debug.LogError(Error);
            }
        }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadAssetBundle)
-            {
-                if (_downloadAssetBundleOp != null)
-                    _downloadAssetBundleOp.SetAbort();
-            }
-        }
    }
 }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSLoadPackageManifestOperation.cs
@@ -39,9 +39,11 @@ namespace YooAsset
                if (_requestWebPackageHashOp == null)
                {
                    _requestWebPackageHashOp = new RequestWebRemotePackageHashOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageHashOp);
+                    _requestWebPackageHashOp.StartOperation();
+                    AddChildOperation(_requestWebPackageHashOp);
                }

+                _requestWebPackageHashOp.UpdateOperation();
                if (_requestWebPackageHashOp.IsDone == false)
                    return;

@@ -63,9 +65,11 @@ namespace YooAsset
                {
                    string packageHash = _requestWebPackageHashOp.PackageHash;
                    _loadWebPackageManifestOp = new LoadWebRemotePackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadWebPackageManifestOp);
+                    _loadWebPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadWebPackageManifestOp);
                }

+                _loadWebPackageManifestOp.UpdateOperation();
                Progress = _loadWebPackageManifestOp.Progress;
                if (_loadWebPackageManifestOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSRequestPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/DWRFSRequestPackageVersionOperation.cs
@@ -37,9 +37,11 @@ namespace YooAsset
                if (_requestWebPackageVersionOp == null)
                {
                    _requestWebPackageVersionOp = new RequestWebRemotePackageVersionOperation(_fileSystem, _appendTimeTicks, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageVersionOp);
+                    _requestWebPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestWebPackageVersionOp);
                }

+                _requestWebPackageVersionOp.UpdateOperation();
                Progress = _requestWebPackageVersionOp.Progress;
                if (_requestWebPackageVersionOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/LoadWebRemotePackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/LoadWebRemotePackageManifestOperation.cs
@@ -49,9 +49,11 @@ namespace YooAsset
                    string fileName = YooAssetSettingsData.GetManifestBinaryFileName(_fileSystem.PackageName, _packageVersion);
                    string url = GetWebRequestURL(fileName);
                    _webDataRequestOp = new UnityWebDataRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webDataRequestOp);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
                }

+                _webDataRequestOp.UpdateOperation();
                if (_webDataRequestOp.IsDone == false)
                    return;

@@ -88,9 +90,11 @@ namespace YooAsset
                if (_deserializer == null)
                {
                    _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                }

+                _deserializer.UpdateOperation();
                Progress = _deserializer.Progress;
                if (_deserializer.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageHashOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageHashOperation.cs
@@ -46,9 +46,11 @@ namespace YooAsset
                    string fileName = YooAssetSettingsData.GetPackageHashFileName(_fileSystem.PackageName, _packageVersion);
                    string url = GetWebRequestURL(fileName);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

+                _webTextRequestOp.UpdateOperation();
                Progress = _webTextRequestOp.Progress;
                if (_webTextRequestOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebRemoteFileSystem/Operation/internal/RequestWebRemotePackageVersionOperation.cs
@@ -46,9 +46,11 @@ namespace YooAsset
                    string fileName = YooAssetSettingsData.GetPackageVersionFileName(_fileSystem.PackageName);
                    string url = GetWebRequestURL(fileName);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

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

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSInitializeOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSInitializeOperation.cs
@@ -1,6 +1,4 @@

-using static UnityEngine.Networking.UnityWebRequest;
-
 namespace YooAsset
 {
    internal class DWSFSInitializeOperation : FSInitializeFileSystemOperation
@@ -49,9 +47,11 @@ namespace YooAsset
 #endif

                    _loadCatalogFileOp = new LoadWebServerCatalogFileOperation(_fileSystem);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadCatalogFileOp);
+                    _loadCatalogFileOp.StartOperation();
+                    AddChildOperation(_loadCatalogFileOp);
                }

+                _loadCatalogFileOp.UpdateOperation();
                if (_loadCatalogFileOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSLoadBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSLoadBundleOperation.cs
@@ -42,15 +42,18 @@ namespace YooAsset
                    if (_bundle.Encrypted)
                    {
                        _downloadAssetBundleOp = new DownloadWebEncryptAssetBundleOperation(true, _fileSystem.DecryptionServices, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                    }
                    else
                    {
                        _downloadAssetBundleOp = new DownloadWebNormalAssetBundleOperation(_fileSystem.DisableUnityWebCache, _bundle, downloadParam);
-                        OperationSystem.StartOperation(_fileSystem.PackageName, _downloadAssetBundleOp);
+                        _downloadAssetBundleOp.StartOperation();
+                        AddChildOperation(_downloadAssetBundleOp);
                    }
                }

+                _downloadAssetBundleOp.UpdateOperation();
                DownloadProgress = _downloadAssetBundleOp.DownloadProgress;
                DownloadedBytes = _downloadAssetBundleOp.DownloadedBytes;
                Progress = _downloadAssetBundleOp.Progress;
@@ -91,13 +94,5 @@ namespace YooAsset
                UnityEngine.Debug.LogError(Error);
            }
        }
-        public override void AbortDownloadOperation()
-        {
-            if (_steps == ESteps.DownloadAssetBundle)
-            {
-                if (_downloadAssetBundleOp != null)
-                    _downloadAssetBundleOp.SetAbort();
-            }
-        }
    }
 }
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSLoadPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSLoadPackageManifestOperation.cs
@@ -39,9 +39,11 @@ namespace YooAsset
                if (_requestWebPackageHashOp == null)
                {
                    _requestWebPackageHashOp = new RequestWebServerPackageHashOperation(_fileSystem, _packageVersion, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageHashOp);
+                    _requestWebPackageHashOp.StartOperation();
+                    AddChildOperation(_requestWebPackageHashOp);
                }

+                _requestWebPackageHashOp.UpdateOperation();
                if (_requestWebPackageHashOp.IsDone == false)
                    return;

@@ -63,9 +65,11 @@ namespace YooAsset
                {
                    string packageHash = _requestWebPackageHashOp.PackageHash;
                    _loadWebPackageManifestOp = new LoadWebServerPackageManifestOperation(_fileSystem, _packageVersion, packageHash);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _loadWebPackageManifestOp);
+                    _loadWebPackageManifestOp.StartOperation();
+                    AddChildOperation(_loadWebPackageManifestOp);
                }

+                _loadWebPackageManifestOp.UpdateOperation();
                Progress = _loadWebPackageManifestOp.Progress;
                if (_loadWebPackageManifestOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSRequestPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/DWSFSRequestPackageVersionOperation.cs
@@ -35,9 +35,11 @@ namespace YooAsset
                if (_requestWebPackageVersionOp == null)
                {
                    _requestWebPackageVersionOp = new RequestWebServerPackageVersionOperation(_fileSystem, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _requestWebPackageVersionOp);
+                    _requestWebPackageVersionOp.StartOperation();
+                    AddChildOperation(_requestWebPackageVersionOp);
                }

+                _requestWebPackageVersionOp.UpdateOperation();
                Progress = _requestWebPackageVersionOp.Progress;
                if (_requestWebPackageVersionOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/LoadWebServerPackageManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/LoadWebServerPackageManifestOperation.cs
@@ -47,9 +47,11 @@ namespace YooAsset
                    string filePath = _fileSystem.GetWebPackageManifestFilePath(_packageVersion);
                    string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                    _webDataRequestOp = new UnityWebDataRequestOperation(url);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webDataRequestOp);
+                    _webDataRequestOp.StartOperation();
+                    AddChildOperation(_webDataRequestOp);
                }

+                _webDataRequestOp.UpdateOperation();
                if (_webDataRequestOp.IsDone == false)
                    return;

@@ -85,9 +87,11 @@ namespace YooAsset
                if (_deserializer == null)
                {
                    _deserializer = new DeserializeManifestOperation(_webDataRequestOp.Result);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _deserializer);
+                    _deserializer.StartOperation();
+                    AddChildOperation(_deserializer);
                }

+                _deserializer.UpdateOperation();
                Progress = _deserializer.Progress;
                if (_deserializer.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/RequestWebServerPackageHashOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/RequestWebServerPackageHashOperation.cs
@@ -44,9 +44,11 @@ namespace YooAsset
                    string filePath = _fileSystem.GetWebPackageHashFilePath(_packageVersion);
                    string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

+                _webTextRequestOp.UpdateOperation();
                Progress = _webTextRequestOp.Progress;
                if (_webTextRequestOp.IsDone == false)
                    return;
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/RequestWebServerPackageVersionOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultWebServerFileSystem/Operation/internal/RequestWebServerPackageVersionOperation.cs
@@ -42,9 +42,11 @@ namespace YooAsset
                    string filePath = _fileSystem.GetWebPackageVersionFilePath();
                    string url = DownloadSystemHelper.ConvertToWWWPath(filePath);
                    _webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
-                    OperationSystem.StartOperation(_fileSystem.PackageName, _webTextRequestOp);
+                    _webTextRequestOp.StartOperation();
+                    AddChildOperation(_webTextRequestOp);
                }

+                _webTextRequestOp.UpdateOperation();
                if (_webTextRequestOp.IsDone == false)
                    return;

--- a/Assets/YooAsset/Runtime/FileSystem/Interface/IFileSystem.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/Interface/IFileSystem.cs
@@ -56,14 +56,14 @@ namespace YooAsset
        void SetParameter(string name, object value);

        /// <summary>
-        /// 创建缓存系统
+        /// 创建文件系统
        /// </summary>
        void OnCreate(string packageName, string packageRoot);

        /// <summary>
-        /// 更新文件系统
+        /// 销毁文件系统
        /// </summary>
-        void OnUpdate();
+        void OnDestroy();


        /// <summary>
--- a/Assets/YooAsset/Runtime/FileSystem/Operation/FSLoadBundleFileOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/Operation/FSLoadBundleFileOperation.cs
@@ -1,5 +1,4 @@
-using UnityEngine;
-
+
 namespace YooAsset
 {
    internal abstract class FSLoadBundleOperation : AsyncOperationBase
@@ -18,11 +17,6 @@ namespace YooAsset
        /// 下载大小
        /// </summary>
        public long DownloadedBytes { protected set; get; } = 0;
-
-        /// <summary>
-        /// 终止下载任务
-        /// </summary>
-        public abstract void AbortDownloadOperation();
    }

    internal sealed class FSLoadBundleCompleteOperation : FSLoadBundleOperation
@@ -41,8 +35,5 @@ namespace YooAsset
        internal override void InternalUpdate()
        {
        }
-        public override void AbortDownloadOperation()
-        {
-        }
    }
 }