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/*
* 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 <cutils/compiler.h>
#include <SkBitmap.h>
#include <SkiaColorFilter.h>
#include <SkiaShader.h>
#include <utils/KeyedVector.h>
#include "Layer.h"
namespace android {
namespace uirenderer {
/**
* Type of Resource being cached
*/
enum ResourceType {
kBitmap,
kShader,
kColorFilter,
kPath,
kLayer
};
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 ANDROID_API ResourceCache {
public:
ResourceCache();
~ResourceCache();
/**
* When using these two methods, make sure to only invoke the *Locked()
* variants of increment/decrementRefcount(), recyle() and destructor()
*/
void lock();
void unlock();
void incrementRefcount(SkPath* resource);
void incrementRefcount(SkBitmap* resource);
void incrementRefcount(SkiaShader* resource);
void incrementRefcount(SkiaColorFilter* resource);
void incrementRefcount(Layer* resource);
void incrementRefcountLocked(SkPath* resource);
void incrementRefcountLocked(SkBitmap* resource);
void incrementRefcountLocked(SkiaShader* resource);
void incrementRefcountLocked(SkiaColorFilter* resource);
void incrementRefcountLocked(Layer* resource);
void decrementRefcount(SkBitmap* resource);
void decrementRefcount(SkPath* resource);
void decrementRefcount(SkiaShader* resource);
void decrementRefcount(SkiaColorFilter* resource);
void decrementRefcount(Layer* resource);
void decrementRefcountLocked(SkBitmap* resource);
void decrementRefcountLocked(SkPath* resource);
void decrementRefcountLocked(SkiaShader* resource);
void decrementRefcountLocked(SkiaColorFilter* resource);
void decrementRefcountLocked(Layer* resource);
void destructor(SkPath* resource);
void destructor(SkBitmap* resource);
void destructor(SkiaShader* resource);
void destructor(SkiaColorFilter* resource);
void destructorLocked(SkPath* resource);
void destructorLocked(SkBitmap* resource);
void destructorLocked(SkiaShader* resource);
void destructorLocked(SkiaColorFilter* resource);
bool recycle(SkBitmap* resource);
bool recycleLocked(SkBitmap* resource);
private:
void deleteResourceReferenceLocked(void* resource, ResourceReference* ref);
void incrementRefcount(void* resource, ResourceType resourceType);
void incrementRefcountLocked(void* resource, ResourceType resourceType);
void decrementRefcount(void* resource);
void decrementRefcountLocked(void* resource);
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;
KeyedVector<void*, ResourceReference*>* mCache;
};
}; // namespace uirenderer
}; // namespace android
#endif // ANDROID_HWUI_RESOURCE_CACHE_H
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