update resource manager

增加卸载指定资源的方法。

Assets/YooAsset/Runtime/ResourceManager/Loader/BundleLoaderBase.cs

@@ -45,6 +45,7 @@ namespace YooAsset
 		public bool IsDestroyed { private set; get; } = false;
 
 		private readonly List<ProviderBase> _providers = new List<ProviderBase>(100);
+		private readonly List<ProviderBase> _removeList = new List<ProviderBase>(100);
 		internal AssetBundle CacheBundle { set; get; }
 		internal string FileLoadPath { set; get; }
 		internal float DownloadProgress { set; get; }
@@ -59,15 +60,6 @@ namespace YooAsset
 			Status = EStatus.None;
 		}
 
-		/// <summary>
-		/// 添加附属的资源提供者
-		/// </summary>
-		public void AddProvider(ProviderBase provider)
-		{
-			if (_providers.Contains(provider) == false)
-				_providers.Add(provider);
-		}
-
 		/// <summary>
 		/// 引用（引用计数递加）
 		/// </summary>
@@ -100,40 +92,51 @@ namespace YooAsset
 			if (IsDone() == false)
 				return false;
 
-			if (RefCount > 0)
+			return RefCount <= 0;
-				return false;
-
-			return true;
 		}
 
 		/// <summary>
-		/// 在满足条件的前提下，销毁所有资源提供者
+		/// 添加附属的资源提供者
 		/// </summary>
-		public void TryDestroyAllProviders()
+		public void AddProvider(ProviderBase provider)
 		{
+			if (_providers.Contains(provider) == false)
+				_providers.Add(provider);
+		}
+
+		/// <summary>
+		/// 尝试销毁资源提供者
+		/// </summary>
+		public void TryDestroyProviders()
+		{
+			// TODO 不用等待资源包加载完成
+			/*
 			if (IsDone() == false)
 				return;
+			*/
 
-			// 条件1：必须等待所有Provider可以销毁
+			_removeList.Clear();
+
+			// 获取移除列表
 			foreach (var provider in _providers)
 			{
-				if (provider.CanDestroy() == false)
+				if (provider.CanDestroy())
-					return;
-			}
-
-			// 条件2：除了自己没有其它引用
-			if (RefCount > _providers.Count)
-				return;
-
-			// 销毁所有Providers
-			{
-				foreach (var provider in _providers)
 				{
-					provider.Destroy();
+					_removeList.Add(provider);
 				}
-				Impl.RemoveBundleProviders(_providers);
-				_providers.Clear();
 			}
+
+			// 销毁资源提供者
+			foreach (var provider in _removeList)
+			{
+				_providers.Remove(provider);
+				provider.Destroy();
+			}
+
+			// 移除资源提供者
+			Impl.RemoveBundleProviders(_removeList);
+
+			_removeList.Clear();
 		}
 
 

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

@@ -145,14 +145,15 @@ namespace YooAsset
 		/// </summary>
 		public bool CanDestroy()
 		{
-			if (IsDone == false)
+			// 注意：在进行资源加载过程时不可以销毁
+			if (Status == EStatus.Loading || Status == EStatus.Checking)
 				return false;
 
 			return RefCount <= 0;
 		}
 
 		/// <summary>
-		/// 创建操作句柄
+		/// 创建资源句柄
 		/// </summary>
 		public T CreateHandle<T>() where T : HandleBase
 		{
@@ -178,12 +179,12 @@ namespace YooAsset
 		}
 
 		/// <summary>
-		/// 释放操作句柄
+		/// 释放资源句柄
 		/// </summary>
 		public void ReleaseHandle(HandleBase handle)
 		{
 			if (RefCount <= 0)
-				YooLogger.Warning("Asset provider reference count is already zero. There may be resource leaks !");
+				throw new System.Exception("Should never get here !");
 
 			if (_handles.Remove(handle) == false)
 				throw new System.Exception("Should never get here !");

Assets/YooAsset/Runtime/ResourceManager/ResourceManager.cs

@@ -105,7 +105,7 @@ namespace YooAsset
 			for (int i = _loaderList.Count - 1; i >= 0; i--)
 			{
 				BundleLoaderBase loader = _loaderList[i];
-				loader.TryDestroyAllProviders();
+				loader.TryDestroyProviders();
 			}
 
 			for (int i = _loaderList.Count - 1; i >= 0; i--)
@@ -121,6 +121,50 @@ namespace YooAsset
 			}
 		}
 
+		/// <summary>
+		/// 尝试卸载指定资源的资源包（包括依赖资源）
+		/// </summary>
+		public void TryUnloadUnusedAsset(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+			{
+				YooLogger.Error($"Failed to unload asset ! {assetInfo.Error}");
+				return;
+			}
+
+			// 卸载主资源包加载器
+			string manBundleName = _bundleQuery.GetMainBundleName(assetInfo);
+			var mainLoader = TryGetAssetBundleLoader(manBundleName);
+			if (mainLoader != null)
+			{
+				mainLoader.TryDestroyProviders();
+				if (mainLoader.CanDestroy())
+				{
+					string bundleName = mainLoader.MainBundleInfo.Bundle.BundleName;
+					mainLoader.Destroy();
+					_loaderList.Remove(mainLoader);
+					_loaderDic.Remove(bundleName);
+				}
+			}
+
+			// 卸载依赖资源包加载器
+			string[] dependBundleNames = _bundleQuery.GetDependBundleNames(assetInfo);
+			foreach (var dependBundleName in dependBundleNames)
+			{
+				var dependLoader = TryGetAssetBundleLoader(dependBundleName);
+				if (dependLoader != null)
+				{
+					if (dependLoader.CanDestroy())
+					{
+						string bundleName = dependLoader.MainBundleInfo.Bundle.BundleName;
+						dependLoader.Destroy();
+						_loaderList.Remove(dependLoader);
+						_loaderDic.Remove(bundleName);
+					}
+				}
+			}
+		}
+
 		/// <summary>
 		/// 强制回收所有资源
 		/// </summary>
@@ -357,9 +401,9 @@ namespace YooAsset
 			}
 			return result;
 		}
-		internal void RemoveBundleProviders(List<ProviderBase> providers)
+		internal void RemoveBundleProviders(List<ProviderBase> removeList)
 		{
-			foreach (var provider in providers)
+			foreach (var provider in removeList)
 			{
 				_providerList.Remove(provider);
 				_providerDic.Remove(provider.ProviderGUID);

Assets/YooAsset/Runtime/ResourcePackage/Interface/IBundleQuery.cs

@@ -13,6 +13,16 @@ namespace YooAsset
 		/// </summary>
 		BundleInfo[] GetDependBundleInfos(AssetInfo assetPath);
 
+		/// <summary>
+		/// 获取主资源包名称
+		/// </summary>
+		string GetMainBundleName(AssetInfo assetInfo);
+
+		/// <summary>
+		/// 获取依赖的资源包名称集合
+		/// </summary>
+		string[] GetDependBundleNames(AssetInfo assetInfo);
+
 		/// <summary>
 		/// 清单是否有效
 		/// </summary>

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

@@ -129,6 +129,29 @@ namespace YooAsset
 			}
 			return result.ToArray();
 		}
+		string IBundleQuery.GetMainBundleName(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var packageBundle = _activeManifest.GetMainPackageBundle(assetInfo.AssetPath);
+			return packageBundle.BundleName;
+		}
+		string[] IBundleQuery.GetDependBundleNames(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var depends = _activeManifest.GetAllDependencies(assetInfo.AssetPath);
+			List<string> result = new List<string>(depends.Length);
+			foreach (var packageBundle in depends)
+			{
+				result.Add(packageBundle.BundleName);
+			}
+			return result.ToArray();
+		}
 		bool IBundleQuery.ManifestValid()
 		{
 			return _activeManifest != null;

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

@@ -385,6 +385,29 @@ namespace YooAsset
 			}
 			return result.ToArray();
 		}
+		string IBundleQuery.GetMainBundleName(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var packageBundle = _activeManifest.GetMainPackageBundle(assetInfo.AssetPath);
+			return packageBundle.BundleName;
+		}
+		string[] IBundleQuery.GetDependBundleNames(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var depends = _activeManifest.GetAllDependencies(assetInfo.AssetPath);
+			List<string> result = new List<string>(depends.Length);
+			foreach (var packageBundle in depends)
+			{
+				result.Add(packageBundle.BundleName);
+			}
+			return result.ToArray();
+		}
 		bool IBundleQuery.ManifestValid()
 		{
 			return _activeManifest != null;

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

@@ -214,6 +214,29 @@ namespace YooAsset
 			}
 			return result.ToArray();
 		}
+		string IBundleQuery.GetMainBundleName(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var packageBundle = _activeManifest.GetMainPackageBundle(assetInfo.AssetPath);
+			return packageBundle.BundleName;
+		}
+		string[] IBundleQuery.GetDependBundleNames(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var depends = _activeManifest.GetAllDependencies(assetInfo.AssetPath);
+			List<string> result = new List<string>(depends.Length);
+			foreach (var packageBundle in depends)
+			{
+				result.Add(packageBundle.BundleName);
+			}
+			return result.ToArray();
+		}
 		bool IBundleQuery.ManifestValid()
 		{
 			return _activeManifest != null;

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

@@ -259,6 +259,29 @@ namespace YooAsset
 			}
 			return result.ToArray();
 		}
+		string IBundleQuery.GetMainBundleName(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var packageBundle = _activeManifest.GetMainPackageBundle(assetInfo.AssetPath);
+			return packageBundle.BundleName;
+		}
+		string[] IBundleQuery.GetDependBundleNames(AssetInfo assetInfo)
+		{
+			if (assetInfo.IsInvalid)
+				throw new Exception("Should never get here !");
+
+			// 注意：如果清单里未找到资源包会抛出异常！
+			var depends = _activeManifest.GetAllDependencies(assetInfo.AssetPath);
+			List<string> result = new List<string>(depends.Length);
+			foreach (var packageBundle in depends)
+			{
+				result.Add(packageBundle.BundleName);
+			}
+			return result.ToArray();
+		}
 		bool IBundleQuery.ManifestValid()
 		{
 			return _activeManifest != null;

Assets/YooAsset/Runtime/ResourcePackage/ResourcePackage.cs

@@ -346,6 +346,7 @@ namespace YooAsset
 			return _playModeImpl.ActiveManifest.PackageVersion;
 		}
 
+		#region 资源卸载
 		/// <summary>
 		/// 资源回收（卸载引用计数为零的资源）
 		/// </summary>
@@ -355,6 +356,25 @@ namespace YooAsset
 			_resourceMgr.UnloadUnusedAssets();
 		}
 
+		/// <summary>
+		/// 资源回收（尝试卸载指定的资源）
+		/// </summary>
+		public void TryUnloadUnusedAsset(string location)
+		{
+			DebugCheckInitialize();
+			AssetInfo assetInfo = ConvertLocationToAssetInfo(location, null);
+			_resourceMgr.TryUnloadUnusedAsset(assetInfo);
+		}
+
+		/// <summary>
+		/// 资源回收（尝试卸载指定的资源）
+		/// </summary>
+		public void TryUnloadUnusedAsset(AssetInfo assetInfo)
+		{
+			DebugCheckInitialize();
+			_resourceMgr.TryUnloadUnusedAsset(assetInfo);
+		}
+
 		/// <summary>
 		/// 强制回收所有资源
 		/// </summary>
@@ -363,6 +383,7 @@ namespace YooAsset
 			DebugCheckInitialize();
 			_resourceMgr.ForceUnloadAllAssets();
 		}
+		#endregion
 
 		#region 沙盒相关
 		/// <summary>