libs/hwui/ResourceCache.cpp - platform/frameworks/base - Gitiles

 /*
  * 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.
  */

 #define LOG_TAG "OpenGLRenderer"

 #include <SkPixelRef.h>
 #include "ResourceCache.h"
 #include "Caches.h"

 namespace android {
 namespace uirenderer {

 ///////////////////////////////////////////////////////////////////////////////
 // Resource cache
 ///////////////////////////////////////////////////////////////////////////////

 void ResourceCache::logCache() {
     ALOGD("ResourceCache: cacheReport:");
     for (size_t i = 0; i < mCache->size(); ++i) {
         ResourceReference* ref = mCache->valueAt(i);
         ALOGD("  ResourceCache: mCache(%d): resource, ref = 0x%p, 0x%p",
                 i, mCache->keyAt(i), mCache->valueAt(i));
         ALOGD("  ResourceCache: mCache(%d): refCount, recycled, destroyed, type = %d, %d, %d, %d",
                 i, ref->refCount, ref->recycled, ref->destroyed, ref->resourceType);
     }
 }

 ResourceCache::ResourceCache() {
     Mutex::Autolock _l(mLock);
     mCache = new KeyedVector<const void*, ResourceReference*>();
 }

 ResourceCache::~ResourceCache() {
     Mutex::Autolock _l(mLock);
     delete mCache;
 }

 void ResourceCache::lock() {
     mLock.lock();
 }

 void ResourceCache::unlock() {
     mLock.unlock();
 }

 void ResourceCache::incrementRefcount(void* resource, ResourceType resourceType) {
     Mutex::Autolock _l(mLock);
     incrementRefcountLocked(resource, resourceType);
 }

 void ResourceCache::incrementRefcount(const SkBitmap* bitmapResource) {
     bitmapResource->pixelRef()->globalRef();
     SkSafeRef(bitmapResource->getColorTable());
     incrementRefcount((void*) bitmapResource, kBitmap);
 }

 void ResourceCache::incrementRefcount(const SkPath* pathResource) {
     incrementRefcount((void*) pathResource, kPath);
 }

 void ResourceCache::incrementRefcount(SkiaShader* shaderResource) {
     SkSafeRef(shaderResource->getSkShader());
     incrementRefcount((void*) shaderResource, kShader);
 }

 void ResourceCache::incrementRefcount(SkiaColorFilter* filterResource) {
     SkSafeRef(filterResource->getSkColorFilter());
     incrementRefcount((void*) filterResource, kColorFilter);
 }

 void ResourceCache::incrementRefcount(const Res_png_9patch* patchResource) {
     incrementRefcount((void*) patchResource, kNinePatch);
 }

 void ResourceCache::incrementRefcount(Layer* layerResource) {
     incrementRefcount((void*) layerResource, kLayer);
 }

 void ResourceCache::incrementRefcountLocked(void* resource, ResourceType resourceType) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL || mCache->size() == 0) {
         ref = new ResourceReference(resourceType);
         mCache->add(resource, ref);
     }
     ref->refCount++;
 }

 void ResourceCache::incrementRefcountLocked(const SkBitmap* bitmapResource) {
     bitmapResource->pixelRef()->globalRef();
     SkSafeRef(bitmapResource->getColorTable());
     incrementRefcountLocked((void*) bitmapResource, kBitmap);
 }

 void ResourceCache::incrementRefcountLocked(const SkPath* pathResource) {
     incrementRefcountLocked((void*) pathResource, kPath);
 }

 void ResourceCache::incrementRefcountLocked(SkiaShader* shaderResource) {
     SkSafeRef(shaderResource->getSkShader());
     incrementRefcountLocked((void*) shaderResource, kShader);
 }

 void ResourceCache::incrementRefcountLocked(SkiaColorFilter* filterResource) {
     SkSafeRef(filterResource->getSkColorFilter());
     incrementRefcountLocked((void*) filterResource, kColorFilter);
 }

 void ResourceCache::incrementRefcountLocked(const Res_png_9patch* patchResource) {
     incrementRefcountLocked((void*) patchResource, kNinePatch);
 }

 void ResourceCache::incrementRefcountLocked(Layer* layerResource) {
     incrementRefcountLocked((void*) layerResource, kLayer);
 }

 void ResourceCache::decrementRefcount(void* resource) {
     Mutex::Autolock _l(mLock);
     decrementRefcountLocked(resource);
 }

 void ResourceCache::decrementRefcount(const SkBitmap* bitmapResource) {
     bitmapResource->pixelRef()->globalUnref();
     SkSafeUnref(bitmapResource->getColorTable());
     decrementRefcount((void*) bitmapResource);
 }

 void ResourceCache::decrementRefcount(const SkPath* pathResource) {
     decrementRefcount((void*) pathResource);
 }

 void ResourceCache::decrementRefcount(SkiaShader* shaderResource) {
     SkSafeUnref(shaderResource->getSkShader());
     decrementRefcount((void*) shaderResource);
 }

 void ResourceCache::decrementRefcount(SkiaColorFilter* filterResource) {
     SkSafeUnref(filterResource->getSkColorFilter());
     decrementRefcount((void*) filterResource);
 }

 void ResourceCache::decrementRefcount(const Res_png_9patch* patchResource) {
     decrementRefcount((void*) patchResource);
 }

 void ResourceCache::decrementRefcount(Layer* layerResource) {
     decrementRefcount((void*) layerResource);
 }

 void ResourceCache::decrementRefcountLocked(void* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL) {
         // Should not get here - shouldn't get a call to decrement if we're not yet tracking it
         return;
     }
     ref->refCount--;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
     }
 }

 void ResourceCache::decrementRefcountLocked(const SkBitmap* bitmapResource) {
     bitmapResource->pixelRef()->globalUnref();
     SkSafeUnref(bitmapResource->getColorTable());
     decrementRefcountLocked((void*) bitmapResource);
 }

 void ResourceCache::decrementRefcountLocked(const SkPath* pathResource) {
     decrementRefcountLocked((void*) pathResource);
 }

 void ResourceCache::decrementRefcountLocked(SkiaShader* shaderResource) {
     SkSafeUnref(shaderResource->getSkShader());
     decrementRefcountLocked((void*) shaderResource);
 }

 void ResourceCache::decrementRefcountLocked(SkiaColorFilter* filterResource) {
     SkSafeUnref(filterResource->getSkColorFilter());
     decrementRefcountLocked((void*) filterResource);
 }

 void ResourceCache::decrementRefcountLocked(const Res_png_9patch* patchResource) {
     decrementRefcountLocked((void*) patchResource);
 }

 void ResourceCache::decrementRefcountLocked(Layer* layerResource) {
     decrementRefcountLocked((void*) layerResource);
 }

 void ResourceCache::destructor(SkPath* resource) {
     Mutex::Autolock _l(mLock);
     destructorLocked(resource);
 }

 void ResourceCache::destructorLocked(SkPath* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL) {
         // If we're not tracking this resource, just delete it
         if (Caches::hasInstance()) {
             Caches::getInstance().pathCache.removeDeferred(resource);
         }
         delete resource;
         return;
     }
     ref->destroyed = true;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
     }
 }

 void ResourceCache::destructor(const SkBitmap* resource) {
     Mutex::Autolock _l(mLock);
     destructorLocked(resource);
 }

 void ResourceCache::destructorLocked(const SkBitmap* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL) {
         // If we're not tracking this resource, just delete it
         if (Caches::hasInstance()) {
             Caches::getInstance().textureCache.removeDeferred(resource);
         }
         delete resource;
         return;
     }
     ref->destroyed = true;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
     }
 }

 void ResourceCache::destructor(SkiaShader* resource) {
     Mutex::Autolock _l(mLock);
     destructorLocked(resource);
 }

 void ResourceCache::destructorLocked(SkiaShader* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL) {
         // If we're not tracking this resource, just delete it
         delete resource;
         return;
     }
     ref->destroyed = true;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
     }
 }

 void ResourceCache::destructor(SkiaColorFilter* resource) {
     Mutex::Autolock _l(mLock);
     destructorLocked(resource);
 }

 void ResourceCache::destructorLocked(SkiaColorFilter* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL) {
         // If we're not tracking this resource, just delete it
         delete resource;
         return;
     }
     ref->destroyed = true;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
     }
 }

 void ResourceCache::destructor(Res_png_9patch* resource) {
     Mutex::Autolock _l(mLock);
     destructorLocked(resource);
 }

 void ResourceCache::destructorLocked(Res_png_9patch* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
     if (ref == NULL) {
         if (Caches::hasInstance()) {
             Caches::getInstance().patchCache.removeDeferred(resource);
         }
         // If we're not tracking this resource, just delete it
         // A Res_png_9patch is actually an array of byte that's larger
         // than sizeof(Res_png_9patch). It must be freed as an array.
         delete[] (int8_t*) resource;
         return;
     }
     ref->destroyed = true;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
     }
 }

 /**
  * Return value indicates whether resource was actually recycled, which happens when RefCnt
  * reaches 0.
  */
 bool ResourceCache::recycle(SkBitmap* resource) {
     Mutex::Autolock _l(mLock);
     return recycleLocked(resource);
 }

 /**
  * Return value indicates whether resource was actually recycled, which happens when RefCnt
  * reaches 0.
  */
 bool ResourceCache::recycleLocked(SkBitmap* resource) {
     ssize_t index = mCache->indexOfKey(resource);
     if (index < 0) {
         // not tracking this resource; just recycle the pixel data
         resource->setPixels(NULL, NULL);
         return true;
     }
     ResourceReference* ref = mCache->valueAt(index);
     if (ref == NULL) {
         // Should not get here - shouldn't get a call to recycle if we're not yet tracking it
         return true;
     }
     ref->recycled = true;
     if (ref->refCount == 0) {
         deleteResourceReferenceLocked(resource, ref);
         return true;
     }
     // Still referring to resource, don't recycle yet
     return false;
 }

 /**
  * This method should only be called while the mLock mutex is held (that mutex is grabbed
  * by the various destructor() and recycle() methods which call this method).
  */
 void ResourceCache::deleteResourceReferenceLocked(const void* resource, ResourceReference* ref) {
     if (ref->recycled && ref->resourceType == kBitmap) {
         ((SkBitmap*) resource)->setPixels(NULL, NULL);
     }
     if (ref->destroyed || ref->resourceType == kLayer) {
         switch (ref->resourceType) {
             case kBitmap: {
                 SkBitmap* bitmap = (SkBitmap*) resource;
                 if (Caches::hasInstance()) {
                     Caches::getInstance().textureCache.removeDeferred(bitmap);
                 }
                 delete bitmap;
             }
             break;
             case kPath: {
                 SkPath* path = (SkPath*) resource;
                 if (Caches::hasInstance()) {
                     Caches::getInstance().pathCache.removeDeferred(path);
                 }
                 delete path;
             }
             break;
             case kShader: {
                 SkiaShader* shader = (SkiaShader*) resource;
                 delete shader;
             }
             break;
             case kColorFilter: {
                 SkiaColorFilter* filter = (SkiaColorFilter*) resource;
                 delete filter;
             }
             break;
             case kNinePatch: {
                 if (Caches::hasInstance()) {
                     Caches::getInstance().patchCache.removeDeferred((Res_png_9patch*) resource);
                 }
                 // A Res_png_9patch is actually an array of byte that's larger
                 // than sizeof(Res_png_9patch). It must be freed as an array.
                 int8_t* patch = (int8_t*) resource;
                 delete[] patch;
             }
             break;
             case kLayer: {
                 Layer* layer = (Layer*) resource;
                 Caches::getInstance().deleteLayerDeferred(layer);
             }
             break;
         }
     }
     mCache->removeItem(resource);
     delete ref;
 }

 }; // namespace uirenderer
 }; // namespace android
	/*
	* 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.
	*/

	#define LOG_TAG "OpenGLRenderer"

	#include <SkPixelRef.h>
	#include "ResourceCache.h"
	#include "Caches.h"

	namespace android {
	namespace uirenderer {

	///////////////////////////////////////////////////////////////////////////////
	// Resource cache
	///////////////////////////////////////////////////////////////////////////////

	void ResourceCache::logCache() {
	ALOGD("ResourceCache: cacheReport:");
	for (size_t i = 0; i < mCache->size(); ++i) {
	ResourceReference* ref = mCache->valueAt(i);
	ALOGD(" ResourceCache: mCache(%d): resource, ref = 0x%p, 0x%p",
	i, mCache->keyAt(i), mCache->valueAt(i));
	ALOGD(" ResourceCache: mCache(%d): refCount, recycled, destroyed, type = %d, %d, %d, %d",
	i, ref->refCount, ref->recycled, ref->destroyed, ref->resourceType);
	}
	}

	ResourceCache::ResourceCache() {
	Mutex::Autolock _l(mLock);
	mCache = new KeyedVector<const void, ResourceReference>();
	}

	ResourceCache::~ResourceCache() {
	Mutex::Autolock _l(mLock);
	delete mCache;
	}

	void ResourceCache::lock() {
	mLock.lock();
	}

	void ResourceCache::unlock() {
	mLock.unlock();
	}

	void ResourceCache::incrementRefcount(void* resource, ResourceType resourceType) {
	Mutex::Autolock _l(mLock);
	incrementRefcountLocked(resource, resourceType);
	}

	void ResourceCache::incrementRefcount(const SkBitmap* bitmapResource) {
	bitmapResource->pixelRef()->globalRef();
	SkSafeRef(bitmapResource->getColorTable());
	incrementRefcount((void*) bitmapResource, kBitmap);
	}

	void ResourceCache::incrementRefcount(const SkPath* pathResource) {
	incrementRefcount((void*) pathResource, kPath);
	}

	void ResourceCache::incrementRefcount(SkiaShader* shaderResource) {
	SkSafeRef(shaderResource->getSkShader());
	incrementRefcount((void*) shaderResource, kShader);
	}

	void ResourceCache::incrementRefcount(SkiaColorFilter* filterResource) {
	SkSafeRef(filterResource->getSkColorFilter());
	incrementRefcount((void*) filterResource, kColorFilter);
	}

	void ResourceCache::incrementRefcount(const Res_png_9patch* patchResource) {
	incrementRefcount((void*) patchResource, kNinePatch);
	}

	void ResourceCache::incrementRefcount(Layer* layerResource) {
	incrementRefcount((void*) layerResource, kLayer);
	}

	void ResourceCache::incrementRefcountLocked(void* resource, ResourceType resourceType) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL \|\| mCache->size() == 0) {
	ref = new ResourceReference(resourceType);
	mCache->add(resource, ref);
	}
	ref->refCount++;
	}

	void ResourceCache::incrementRefcountLocked(const SkBitmap* bitmapResource) {
	bitmapResource->pixelRef()->globalRef();
	SkSafeRef(bitmapResource->getColorTable());
	incrementRefcountLocked((void*) bitmapResource, kBitmap);
	}

	void ResourceCache::incrementRefcountLocked(const SkPath* pathResource) {
	incrementRefcountLocked((void*) pathResource, kPath);
	}

	void ResourceCache::incrementRefcountLocked(SkiaShader* shaderResource) {
	SkSafeRef(shaderResource->getSkShader());
	incrementRefcountLocked((void*) shaderResource, kShader);
	}

	void ResourceCache::incrementRefcountLocked(SkiaColorFilter* filterResource) {
	SkSafeRef(filterResource->getSkColorFilter());
	incrementRefcountLocked((void*) filterResource, kColorFilter);
	}

	void ResourceCache::incrementRefcountLocked(const Res_png_9patch* patchResource) {
	incrementRefcountLocked((void*) patchResource, kNinePatch);
	}

	void ResourceCache::incrementRefcountLocked(Layer* layerResource) {
	incrementRefcountLocked((void*) layerResource, kLayer);
	}

	void ResourceCache::decrementRefcount(void* resource) {
	Mutex::Autolock _l(mLock);
	decrementRefcountLocked(resource);
	}

	void ResourceCache::decrementRefcount(const SkBitmap* bitmapResource) {
	bitmapResource->pixelRef()->globalUnref();
	SkSafeUnref(bitmapResource->getColorTable());
	decrementRefcount((void*) bitmapResource);
	}

	void ResourceCache::decrementRefcount(const SkPath* pathResource) {
	decrementRefcount((void*) pathResource);
	}

	void ResourceCache::decrementRefcount(SkiaShader* shaderResource) {
	SkSafeUnref(shaderResource->getSkShader());
	decrementRefcount((void*) shaderResource);
	}

	void ResourceCache::decrementRefcount(SkiaColorFilter* filterResource) {
	SkSafeUnref(filterResource->getSkColorFilter());
	decrementRefcount((void*) filterResource);
	}

	void ResourceCache::decrementRefcount(const Res_png_9patch* patchResource) {
	decrementRefcount((void*) patchResource);
	}

	void ResourceCache::decrementRefcount(Layer* layerResource) {
	decrementRefcount((void*) layerResource);
	}

	void ResourceCache::decrementRefcountLocked(void* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL) {
	// Should not get here - shouldn't get a call to decrement if we're not yet tracking it
	return;
	}
	ref->refCount--;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	}
	}

	void ResourceCache::decrementRefcountLocked(const SkBitmap* bitmapResource) {
	bitmapResource->pixelRef()->globalUnref();
	SkSafeUnref(bitmapResource->getColorTable());
	decrementRefcountLocked((void*) bitmapResource);
	}

	void ResourceCache::decrementRefcountLocked(const SkPath* pathResource) {
	decrementRefcountLocked((void*) pathResource);
	}

	void ResourceCache::decrementRefcountLocked(SkiaShader* shaderResource) {
	SkSafeUnref(shaderResource->getSkShader());
	decrementRefcountLocked((void*) shaderResource);
	}

	void ResourceCache::decrementRefcountLocked(SkiaColorFilter* filterResource) {
	SkSafeUnref(filterResource->getSkColorFilter());
	decrementRefcountLocked((void*) filterResource);
	}

	void ResourceCache::decrementRefcountLocked(const Res_png_9patch* patchResource) {
	decrementRefcountLocked((void*) patchResource);
	}

	void ResourceCache::decrementRefcountLocked(Layer* layerResource) {
	decrementRefcountLocked((void*) layerResource);
	}

	void ResourceCache::destructor(SkPath* resource) {
	Mutex::Autolock _l(mLock);
	destructorLocked(resource);
	}

	void ResourceCache::destructorLocked(SkPath* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL) {
	// If we're not tracking this resource, just delete it
	if (Caches::hasInstance()) {
	Caches::getInstance().pathCache.removeDeferred(resource);
	}
	delete resource;
	return;
	}
	ref->destroyed = true;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	}
	}

	void ResourceCache::destructor(const SkBitmap* resource) {
	Mutex::Autolock _l(mLock);
	destructorLocked(resource);
	}

	void ResourceCache::destructorLocked(const SkBitmap* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL) {
	// If we're not tracking this resource, just delete it
	if (Caches::hasInstance()) {
	Caches::getInstance().textureCache.removeDeferred(resource);
	}
	delete resource;
	return;
	}
	ref->destroyed = true;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	}
	}

	void ResourceCache::destructor(SkiaShader* resource) {
	Mutex::Autolock _l(mLock);
	destructorLocked(resource);
	}

	void ResourceCache::destructorLocked(SkiaShader* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL) {
	// If we're not tracking this resource, just delete it
	delete resource;
	return;
	}
	ref->destroyed = true;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	}
	}

	void ResourceCache::destructor(SkiaColorFilter* resource) {
	Mutex::Autolock _l(mLock);
	destructorLocked(resource);
	}

	void ResourceCache::destructorLocked(SkiaColorFilter* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL) {
	// If we're not tracking this resource, just delete it
	delete resource;
	return;
	}
	ref->destroyed = true;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	}
	}

	void ResourceCache::destructor(Res_png_9patch* resource) {
	Mutex::Autolock _l(mLock);
	destructorLocked(resource);
	}

	void ResourceCache::destructorLocked(Res_png_9patch* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	ResourceReference* ref = index >= 0 ? mCache->valueAt(index) : NULL;
	if (ref == NULL) {
	if (Caches::hasInstance()) {
	Caches::getInstance().patchCache.removeDeferred(resource);
	}
	// If we're not tracking this resource, just delete it
	// A Res_png_9patch is actually an array of byte that's larger
	// than sizeof(Res_png_9patch). It must be freed as an array.
	delete[] (int8_t*) resource;
	return;
	}
	ref->destroyed = true;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	}
	}

	/**
	* Return value indicates whether resource was actually recycled, which happens when RefCnt
	* reaches 0.
	*/
	bool ResourceCache::recycle(SkBitmap* resource) {
	Mutex::Autolock _l(mLock);
	return recycleLocked(resource);
	}

	/**
	* Return value indicates whether resource was actually recycled, which happens when RefCnt
	* reaches 0.
	*/
	bool ResourceCache::recycleLocked(SkBitmap* resource) {
	ssize_t index = mCache->indexOfKey(resource);
	if (index < 0) {
	// not tracking this resource; just recycle the pixel data
	resource->setPixels(NULL, NULL);
	return true;
	}
	ResourceReference* ref = mCache->valueAt(index);
	if (ref == NULL) {
	// Should not get here - shouldn't get a call to recycle if we're not yet tracking it
	return true;
	}
	ref->recycled = true;
	if (ref->refCount == 0) {
	deleteResourceReferenceLocked(resource, ref);
	return true;
	}
	// Still referring to resource, don't recycle yet
	return false;
	}

	/**
	* This method should only be called while the mLock mutex is held (that mutex is grabbed
	* by the various destructor() and recycle() methods which call this method).
	*/
	void ResourceCache::deleteResourceReferenceLocked(const void* resource, ResourceReference* ref) {
	if (ref->recycled && ref->resourceType == kBitmap) {
	((SkBitmap*) resource)->setPixels(NULL, NULL);
	}
	if (ref->destroyed \|\| ref->resourceType == kLayer) {
	switch (ref->resourceType) {
	case kBitmap: {
	SkBitmap* bitmap = (SkBitmap*) resource;
	if (Caches::hasInstance()) {
	Caches::getInstance().textureCache.removeDeferred(bitmap);
	}
	delete bitmap;
	}
	break;
	case kPath: {
	SkPath* path = (SkPath*) resource;
	if (Caches::hasInstance()) {
	Caches::getInstance().pathCache.removeDeferred(path);
	}
	delete path;
	}
	break;
	case kShader: {
	SkiaShader* shader = (SkiaShader*) resource;
	delete shader;
	}
	break;
	case kColorFilter: {
	SkiaColorFilter* filter = (SkiaColorFilter*) resource;
	delete filter;
	}
	break;
	case kNinePatch: {
	if (Caches::hasInstance()) {
	Caches::getInstance().patchCache.removeDeferred((Res_png_9patch*) resource);
	}
	// A Res_png_9patch is actually an array of byte that's larger
	// than sizeof(Res_png_9patch). It must be freed as an array.
	int8_t* patch = (int8_t*) resource;
	delete[] patch;
	}
	break;
	case kLayer: {
	Layer* layer = (Layer*) resource;
	Caches::getInstance().deleteLayerDeferred(layer);
	}
	break;
	}
	}
	mCache->removeItem(resource);
	delete ref;
	}

	}; // namespace uirenderer
	}; // namespace android