This file should not be here.
Change-Id: I0ccb41869303fa765ed13763bf17c7e0ee9f036e
This commit is contained in:
Romain Guy
parent
74d72d46f2
commit
29405084c9
@ -1,245 +0,0 @@
|
||||
/*
|
||||
* 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_GENERATION_CACHE_H
|
||||
#define ANDROID_HWUI_GENERATION_CACHE_H
|
||||
|
||||
#include <utils/KeyedVector.h>
|
||||
#include <utils/RefBase.h>
|
||||
|
||||
namespace android {
|
||||
namespace uirenderer {
|
||||
|
||||
template<typename EntryKey, typename EntryValue>
|
||||
class OnEntryRemoved {
|
||||
public:
|
||||
virtual ~OnEntryRemoved() { };
|
||||
virtual void operator()(EntryKey& key, EntryValue& value) = 0;
|
||||
}; // class OnEntryRemoved
|
||||
|
||||
template<typename EntryKey, typename EntryValue>
|
||||
struct Entry: public LightRefBase<Entry<EntryKey, EntryValue> > {
|
||||
Entry() { }
|
||||
Entry(const Entry<EntryKey, EntryValue>& e):
|
||||
key(e.key), value(e.value), parent(e.parent), child(e.child) { }
|
||||
Entry(sp<Entry<EntryKey, EntryValue> > e):
|
||||
key(e->key), value(e->value), parent(e->parent), child(e->child) { }
|
||||
|
||||
EntryKey key;
|
||||
EntryValue value;
|
||||
|
||||
sp<Entry<EntryKey, EntryValue> > parent;
|
||||
sp<Entry<EntryKey, EntryValue> > child;
|
||||
}; // struct Entry
|
||||
|
||||
template<typename K, typename V>
|
||||
class GenerationCache {
|
||||
public:
|
||||
GenerationCache(uint32_t maxCapacity);
|
||||
virtual ~GenerationCache();
|
||||
|
||||
enum Capacity {
|
||||
kUnlimitedCapacity,
|
||||
};
|
||||
|
||||
void setOnEntryRemovedListener(OnEntryRemoved<K, V>* listener);
|
||||
|
||||
void clear();
|
||||
|
||||
bool contains(K key) const;
|
||||
V get(K key);
|
||||
K getKeyAt(uint32_t index) const;
|
||||
bool put(K key, V value);
|
||||
V remove(K key);
|
||||
V removeOldest();
|
||||
V getValueAt(uint32_t index) const;
|
||||
|
||||
uint32_t size() const;
|
||||
|
||||
void addToCache(sp<Entry<K, V> > entry, K key, V value);
|
||||
void attachToCache(sp<Entry<K, V> > entry);
|
||||
void detachFromCache(sp<Entry<K, V> > entry);
|
||||
|
||||
V removeAt(ssize_t index);
|
||||
|
||||
KeyedVector<K, sp<Entry<K, V> > > mCache;
|
||||
uint32_t mMaxCapacity;
|
||||
|
||||
OnEntryRemoved<K, V>* mListener;
|
||||
|
||||
sp<Entry<K, V> > mOldest;
|
||||
sp<Entry<K, V> > mYoungest;
|
||||
}; // class GenerationCache
|
||||
|
||||
template<typename K, typename V>
|
||||
GenerationCache<K, V>::GenerationCache(uint32_t maxCapacity): mMaxCapacity(maxCapacity), mListener(NULL) {
|
||||
};
|
||||
|
||||
template<typename K, typename V>
|
||||
GenerationCache<K, V>::~GenerationCache() {
|
||||
clear();
|
||||
};
|
||||
|
||||
template<typename K, typename V>
|
||||
uint32_t GenerationCache<K, V>::size() const {
|
||||
return mCache.size();
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
void GenerationCache<K, V>::setOnEntryRemovedListener(OnEntryRemoved<K, V>* listener) {
|
||||
mListener = listener;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
void GenerationCache<K, V>::clear() {
|
||||
if (mListener) {
|
||||
for (uint32_t i = 0; i < mCache.size(); i++) {
|
||||
sp<Entry<K, V> > entry = mCache.valueAt(i);
|
||||
if (mListener) {
|
||||
(*mListener)(entry->key, entry->value);
|
||||
}
|
||||
}
|
||||
}
|
||||
mCache.clear();
|
||||
mYoungest.clear();
|
||||
mOldest.clear();
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
bool GenerationCache<K, V>::contains(K key) const {
|
||||
return mCache.indexOfKey(key) >= 0;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
K GenerationCache<K, V>::getKeyAt(uint32_t index) const {
|
||||
return mCache.keyAt(index);
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
V GenerationCache<K, V>::getValueAt(uint32_t index) const {
|
||||
return mCache.valueAt(index)->value;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
V GenerationCache<K, V>::get(K key) {
|
||||
ssize_t index = mCache.indexOfKey(key);
|
||||
if (index >= 0) {
|
||||
sp<Entry<K, V> > entry = mCache.valueAt(index);
|
||||
if (entry.get()) {
|
||||
detachFromCache(entry);
|
||||
attachToCache(entry);
|
||||
return entry->value;
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
bool GenerationCache<K, V>::put(K key, V value) {
|
||||
if (mMaxCapacity != kUnlimitedCapacity && mCache.size() >= mMaxCapacity) {
|
||||
removeOldest();
|
||||
}
|
||||
|
||||
ssize_t index = mCache.indexOfKey(key);
|
||||
if (index < 0) {
|
||||
sp<Entry<K, V> > entry = new Entry<K, V>;
|
||||
addToCache(entry, key, value);
|
||||
return true;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
void GenerationCache<K, V>::addToCache(sp<Entry<K, V> > entry, K key, V value) {
|
||||
entry->key = key;
|
||||
entry->value = value;
|
||||
mCache.add(key, entry);
|
||||
attachToCache(entry);
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
V GenerationCache<K, V>::remove(K key) {
|
||||
ssize_t index = mCache.indexOfKey(key);
|
||||
if (index >= 0) {
|
||||
return removeAt(index);
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
V GenerationCache<K, V>::removeAt(ssize_t index) {
|
||||
sp<Entry<K, V> > entry = mCache.valueAt(index);
|
||||
if (mListener) {
|
||||
(*mListener)(entry->key, entry->value);
|
||||
}
|
||||
mCache.removeItemsAt(index, 1);
|
||||
detachFromCache(entry);
|
||||
|
||||
return entry->value;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
V GenerationCache<K, V>::removeOldest() {
|
||||
if (mOldest.get()) {
|
||||
ssize_t index = mCache.indexOfKey(mOldest->key);
|
||||
if (index >= 0) {
|
||||
return removeAt(index);
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
void GenerationCache<K, V>::attachToCache(sp<Entry<K, V> > entry) {
|
||||
if (!mYoungest.get()) {
|
||||
mYoungest = mOldest = entry;
|
||||
} else {
|
||||
entry->parent = mYoungest;
|
||||
mYoungest->child = entry;
|
||||
mYoungest = entry;
|
||||
}
|
||||
}
|
||||
|
||||
template<typename K, typename V>
|
||||
void GenerationCache<K, V>::detachFromCache(sp<Entry<K, V> > entry) {
|
||||
if (entry->parent.get()) {
|
||||
entry->parent->child = entry->child;
|
||||
}
|
||||
|
||||
if (entry->child.get()) {
|
||||
entry->child->parent = entry->parent;
|
||||
}
|
||||
|
||||
if (mOldest == entry) {
|
||||
mOldest = entry->child;
|
||||
}
|
||||
|
||||
if (mYoungest == entry) {
|
||||
mYoungest = entry->parent;
|
||||
}
|
||||
|
||||
entry->parent.clear();
|
||||
entry->child.clear();
|
||||
}
|
||||
|
||||
}; // namespace uirenderer
|
||||
}; // namespace android
|
||||
|
||||
#endif // ANDROID_HWUI_GENERATION_CACHE_H
|
||||
Loading…
Reference in New Issue
Block a user