初始提交: UE5.3项目基础框架

Plugins/CesiumForUnreal/Source/ThirdParty/include/CesiumUtility/IDepotOwningAsset.h

@@ -0,0 +1,43 @@
+#pragma once
+
+namespace CesiumUtility {
+
+/**
+ * @brief An interface representing the depot that owns a {@link SharedAsset}.
+ * This interface is an implementation detail of the shared asset system and
+ * should not be used directly.
+ *
+ * {@link SharedAsset} has a pointer to the asset depot that owns it using this
+ * interface, rather than a complete {@link CesiumAsync::SharedAssetDepot}, in
+ * order to "erase" the type of the asset key. This allows SharedAsset to be
+ * templatized only on the asset type, not on the asset key type.
+ */
+template <typename TAssetType> class IDepotOwningAsset {
+public:
+  virtual ~IDepotOwningAsset() {}
+
+  /**
+   * @brief Marks the given asset as a candidate for deletion.
+   * Should only be called by {@link SharedAsset}. May be called from any thread.
+   *
+   * @param asset The asset to mark for deletion.
+   * @param threadOwnsDepotLock True if the calling thread already owns the
+   * depot lock; otherwise, false.
+   */
+  virtual void
+  markDeletionCandidate(const TAssetType& asset, bool threadOwnsDepotLock) = 0;
+
+  /**
+   * @brief Unmarks the given asset as a candidate for deletion.
+   * Should only be called by {@link SharedAsset}. May be called from any thread.
+   *
+   * @param asset The asset to unmark for deletion.
+   * @param threadOwnsDepotLock True if the calling thread already owns the
+   * depot lock; otherwise, false.
+   */
+  virtual void unmarkDeletionCandidate(
+      const TAssetType& asset,
+      bool threadOwnsDepotLock) = 0;
+};
+
+} // namespace CesiumUtility