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88 lines
2.8 KiB
88 lines
2.8 KiB
/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <android-base/thread_annotations.h>
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#include <binder/IBinder.h>
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#include <gui/LayerState.h>
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#include <renderengine/RenderEngine.h>
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#include <ui/GraphicBuffer.h>
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#include <utils/RefBase.h>
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#include <utils/Singleton.h>
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#include <map>
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#include <mutex>
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#include <set>
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#include <unordered_map>
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#define BUFFER_CACHE_MAX_SIZE 64
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namespace android {
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class ClientCache : public Singleton<ClientCache> {
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public:
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ClientCache();
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bool add(const client_cache_t& cacheId, const sp<GraphicBuffer>& buffer);
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void erase(const client_cache_t& cacheId);
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std::shared_ptr<renderengine::ExternalTexture> get(const client_cache_t& cacheId);
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// Always called immediately after setup. Will be set to non-null, and then should never be
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// called again.
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void setRenderEngine(renderengine::RenderEngine* renderEngine) { mRenderEngine = renderEngine; }
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void removeProcess(const wp<IBinder>& processToken);
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class ErasedRecipient : public virtual RefBase {
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public:
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virtual void bufferErased(const client_cache_t& clientCacheId) = 0;
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};
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bool registerErasedRecipient(const client_cache_t& cacheId,
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const wp<ErasedRecipient>& recipient);
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void unregisterErasedRecipient(const client_cache_t& cacheId,
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const wp<ErasedRecipient>& recipient);
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void dump(std::string& result);
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private:
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std::mutex mMutex;
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struct ClientCacheBuffer {
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std::shared_ptr<renderengine::ExternalTexture> buffer;
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std::set<wp<ErasedRecipient>> recipients;
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};
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std::map<wp<IBinder> /*caching process*/,
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std::pair<sp<IBinder> /*strong ref to caching process*/,
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std::unordered_map<uint64_t /*cache id*/, ClientCacheBuffer>>>
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mBuffers GUARDED_BY(mMutex);
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class CacheDeathRecipient : public IBinder::DeathRecipient {
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public:
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void binderDied(const wp<IBinder>& who) override;
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};
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sp<CacheDeathRecipient> mDeathRecipient;
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renderengine::RenderEngine* mRenderEngine = nullptr;
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bool getBuffer(const client_cache_t& cacheId, ClientCacheBuffer** outClientCacheBuffer)
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REQUIRES(mMutex);
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};
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}; // namespace android
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