1 files changed, 85 insertions, 0 deletions
diff --git a/libs/hwui/ResourceCache.h b/libs/hwui/ResourceCache.h
new file mode 100644
index 0000000..b0abe2c
--- /dev/null
+++ b/libs/hwui/ResourceCache.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HWUI_RESOURCE_CACHE_H
+#define ANDROID_HWUI_RESOURCE_CACHE_H
+
+#include <SkBitmap.h>
+#include <SkiaColorFilter.h>
+#include <SkiaShader.h>
+#include <utils/KeyedVector.h>
+
+namespace android {
+namespace uirenderer {
+
+/**
+ * Type of Resource being cached
+ */
+enum ResourceType {
+    kBitmap,
+    kShader,
+    kColorFilter,
+};
+
+class ResourceReference {
+public:
+
+    ResourceReference() { refCount = 0; recycled = false; destroyed = false;}
+    ResourceReference(ResourceType type) {
+        refCount = 0; recycled = false; destroyed = false; resourceType = type;
+    }
+
+    int refCount;
+    bool recycled;
+    bool destroyed;
+    ResourceType resourceType;
+};
+
+class ResourceCache {
+    KeyedVector<void *, ResourceReference *>* mCache;
+public:
+    ResourceCache();
+    ~ResourceCache();
+    void incrementRefcount(SkBitmap* resource);
+    void incrementRefcount(SkiaShader* resource);
+    void incrementRefcount(SkiaColorFilter* resource);
+    void incrementRefcount(const void* resource, ResourceType resourceType);
+    void decrementRefcount(void* resource);
+    void decrementRefcount(SkBitmap* resource);
+    void decrementRefcount(SkiaShader* resource);
+    void decrementRefcount(SkiaColorFilter* resource);
+    void recycle(void* resource);
+    void recycle(SkBitmap* resource);
+    void destructor(SkBitmap* resource);
+    void destructor(SkiaShader* resource);
+    void destructor(SkiaColorFilter* resource);
+private:
+    void deleteResourceReference(void* resource, ResourceReference* ref);
+    void incrementRefcount(void* resource, ResourceType resourceType);
+    void logCache();
+
+    /**
+     * Used to increment, decrement, and destroy. Incrementing is generally accessed on the UI
+     * thread, but destroying resources may be called from the GC thread, the finalizer thread,
+     * or a reference queue finalization thread.
+     */
+    mutable Mutex mLock;
+};
+
+}; // namespace uirenderer
+}; // namespace android
+
+#endif // ANDROID_HWUI_RESOURCE_CACHE_H