/*
|
* Copyright 2019 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.
|
*/
|
|
#pragma once
|
|
#include <android-base/thread_annotations.h>
|
#include <binder/IBinder.h>
|
#include <gui/LayerState.h>
|
#include <ui/GraphicBuffer.h>
|
#include <utils/RefBase.h>
|
#include <utils/Singleton.h>
|
|
#include <map>
|
#include <mutex>
|
#include <set>
|
#include <unordered_map>
|
|
#define BUFFER_CACHE_MAX_SIZE 64
|
|
namespace android {
|
|
class ClientCache : public Singleton<ClientCache> {
|
public:
|
ClientCache();
|
|
void add(const client_cache_t& cacheId, const sp<GraphicBuffer>& buffer);
|
void erase(const client_cache_t& cacheId);
|
|
sp<GraphicBuffer> get(const client_cache_t& cacheId);
|
|
void removeProcess(const wp<IBinder>& processToken);
|
|
class ErasedRecipient : public virtual RefBase {
|
public:
|
virtual void bufferErased(const client_cache_t& clientCacheId) = 0;
|
};
|
|
void registerErasedRecipient(const client_cache_t& cacheId,
|
const wp<ErasedRecipient>& recipient);
|
void unregisterErasedRecipient(const client_cache_t& cacheId,
|
const wp<ErasedRecipient>& recipient);
|
|
private:
|
std::mutex mMutex;
|
|
struct ClientCacheBuffer {
|
sp<GraphicBuffer> buffer;
|
std::set<wp<ErasedRecipient>> recipients;
|
};
|
std::map<wp<IBinder> /*caching process*/,
|
std::unordered_map<uint64_t /*cache id*/, ClientCacheBuffer>>
|
mBuffers GUARDED_BY(mMutex);
|
|
class CacheDeathRecipient : public IBinder::DeathRecipient {
|
public:
|
void binderDied(const wp<IBinder>& who) override;
|
};
|
|
sp<CacheDeathRecipient> mDeathRecipient;
|
|
bool getBuffer(const client_cache_t& cacheId, ClientCacheBuffer** outClientCacheBuffer)
|
REQUIRES(mMutex);
|
};
|
|
}; // namespace android
|
