Optimizing display lists by referencing pointers to resources instead of copying them
Change-Id: I81ad3551d74aa1e5bb64d69e33d2eb29a6c1eb6a
diff --git a/libs/hwui/ResourceCache.cpp b/libs/hwui/ResourceCache.cpp
new file mode 100644
index 0000000..20b8d6c
--- /dev/null
+++ b/libs/hwui/ResourceCache.cpp
@@ -0,0 +1,219 @@
+/*
+ * 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.
+ */
+
+#include <SkPixelRef.h>
+#include "ResourceCache.h"
+#include "Caches.h"
+
+namespace android {
+namespace uirenderer {
+
+///////////////////////////////////////////////////////////////////////////////
+// Resource cache
+///////////////////////////////////////////////////////////////////////////////
+
+void ResourceCache::logCache() {
+ LOGD("ResourceCache: cacheReport:");
+ for (size_t i = 0; i < mCache->size(); ++i) {
+ ResourceReference* ref = mCache->valueAt(i);
+ LOGD(" ResourceCache: mCache(%d): resource, ref = 0x%p, 0x%p",
+ i, mCache->keyAt(i), mCache->valueAt(i));
+ LOGD(" ResourceCache: mCache(%d): refCount, recycled, destroyed, type = %d, %d, %d, %d",
+ i, ref->refCount, ref->recycled, ref->destroyed, ref->resourceType);
+ }
+}
+
+ResourceCache::ResourceCache() {
+ mCache = new KeyedVector<void *, ResourceReference *>();
+}
+
+ResourceCache::~ResourceCache() {
+ delete mCache;
+}
+
+void ResourceCache::incrementRefcount(void* resource, ResourceType resourceType) {
+ for (size_t i = 0; i < mCache->size(); ++i) {
+ void* ref = mCache->valueAt(i);
+ }
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : NULL;
+ if (ref == NULL || mCache->size() == 0) {
+ ref = new ResourceReference(resourceType);
+ mCache->add(resource, ref);
+ }
+ ref->refCount++;
+}
+
+void ResourceCache::incrementRefcount(SkBitmap* bitmapResource) {
+ bitmapResource->pixelRef()->safeRef();
+ bitmapResource->getColorTable()->safeRef();
+ incrementRefcount((void*)bitmapResource, kBitmap);
+}
+
+void ResourceCache::incrementRefcount(SkMatrix* matrixResource) {
+ incrementRefcount((void*)matrixResource, kMatrix);
+}
+
+void ResourceCache::incrementRefcount(SkPaint* paintResource) {
+ incrementRefcount((void*)paintResource, kPaint);
+}
+
+void ResourceCache::incrementRefcount(SkiaShader* shaderResource) {
+ shaderResource->getSkShader()->safeRef();
+ incrementRefcount((void*)shaderResource, kShader);
+}
+
+void ResourceCache::decrementRefcount(void* resource) {
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : 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) {
+ deleteResourceReference(resource, ref);
+ }
+}
+
+void ResourceCache::decrementRefcount(SkBitmap* bitmapResource) {
+ bitmapResource->pixelRef()->safeUnref();
+ bitmapResource->getColorTable()->safeUnref();
+ decrementRefcount((void*)bitmapResource);
+}
+
+void ResourceCache::decrementRefcount(SkiaShader* shaderResource) {
+ shaderResource->getSkShader()->safeUnref();
+ decrementRefcount((void*)shaderResource);
+}
+
+void ResourceCache::recycle(SkBitmap* resource) {
+ if (mCache->indexOfKey(resource) < 0) {
+ // not tracking this resource; just recycle the pixel data
+ resource->setPixels(NULL, NULL);
+ return;
+ }
+ recycle((void*) resource);
+}
+
+void ResourceCache::recycle(void* resource) {
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : NULL;
+ if (ref == NULL) {
+ // Should not get here - shouldn't get a call to recycle if we're not yet tracking it
+ return;
+ }
+ ref->recycled = true;
+ if (ref->refCount == 0) {
+ deleteResourceReference(resource, ref);
+ }
+}
+
+void ResourceCache::destructor(SkBitmap* resource) {
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : NULL;
+ if (ref == NULL) {
+ // If we're not tracking this resource, just delete it
+ if (Caches::hasInstance()) {
+ Caches::getInstance().textureCache.remove(resource);
+ }
+ delete resource;
+ return;
+ }
+ ref->destroyed = true;
+ if (ref->refCount == 0) {
+ deleteResourceReference(resource, ref);
+ return;
+ }
+}
+
+void ResourceCache::destructor(SkMatrix* resource) {
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : NULL;
+ if (ref == NULL) {
+ // If we're not tracking this resource, just delete it
+ delete resource;
+ return;
+ }
+ ref->destroyed = true;
+ if (ref->refCount == 0) {
+ deleteResourceReference(resource, ref);
+ return;
+ }
+}
+
+void ResourceCache::destructor(SkPaint* resource) {
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : NULL;
+ if (ref == NULL) {
+ // If we're not tracking this resource, just delete it
+ delete resource;
+ return;
+ }
+ ref->destroyed = true;
+ if (ref->refCount == 0) {
+ deleteResourceReference(resource, ref);
+ return;
+ }
+}
+
+void ResourceCache::destructor(SkiaShader* resource) {
+ ResourceReference* ref = mCache->indexOfKey(resource) >= 0 ? mCache->valueFor(resource) : NULL;
+ if (ref == NULL) {
+ // If we're not tracking this resource, just delete it
+ if (Caches::hasInstance()) {
+ Caches::getInstance().gradientCache.remove(resource->getSkShader());
+ }
+ delete resource;
+ return;
+ }
+ ref->destroyed = true;
+ if (ref->refCount == 0) {
+ deleteResourceReference(resource, ref);
+ return;
+ }
+}
+
+void ResourceCache::deleteResourceReference(void* resource, ResourceReference* ref) {
+ if (ref->recycled && ref->resourceType == kBitmap) {
+ ((SkBitmap*) resource)->setPixels(NULL, NULL);
+ }
+ if (ref->destroyed) {
+ switch (ref->resourceType) {
+ case kBitmap:
+ {
+ SkBitmap* bitmap = (SkBitmap*)resource;
+ if (Caches::hasInstance()) {
+ Caches::getInstance().textureCache.remove(bitmap);
+ }
+ delete bitmap;
+ }
+ break;
+ case kMatrix:
+ delete (SkMatrix*) resource;
+ break;
+ case kPaint:
+ delete (SkPaint*) resource;
+ break;
+ case kShader:
+ SkiaShader* shader = (SkiaShader*)resource;
+ if (Caches::hasInstance()) {
+ Caches::getInstance().gradientCache.remove(shader->getSkShader());
+ }
+ delete shader;
+ break;
+ }
+ }
+ mCache->removeItem(resource);
+ delete ref;
+}
+
+}; // namespace uirenderer
+}; // namespace android