| /* |
| * Copyright 2022 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 <semaphore.h> |
| #include <cstdint> |
| #include <mutex> |
| #include <queue> |
| #include <thread> |
| #include <vector> |
| |
| #include <LocklessQueue.h> |
| #include <TransactionState.h> |
| #include <android-base/thread_annotations.h> |
| #include <ftl/small_map.h> |
| #include <ftl/small_vector.h> |
| |
| namespace android { |
| class TransactionHandler { |
| public: |
| struct TransactionFlushState { |
| const TransactionState* transaction; |
| bool firstTransaction = true; |
| nsecs_t queueProcessTime = 0; |
| // Layer handles that have transactions with buffers that are ready to be applied. |
| ftl::SmallMap<IBinder* /* binder address */, uint64_t /* framenumber */, 15> |
| bufferLayersReadyToPresent = {}; |
| ftl::SmallVector<IBinder* /* queueToken */, 15> queuesWithUnsignaledBuffers; |
| }; |
| enum class TransactionReadiness { |
| NotReady, |
| NotReadyBarrier, |
| Ready, |
| ReadyUnsignaled, |
| ReadyUnsignaledSingle, |
| }; |
| using TransactionFilter = std::function<TransactionReadiness(const TransactionFlushState&)>; |
| |
| bool hasPendingTransactions(); |
| std::vector<TransactionState> flushTransactions(); |
| void addTransactionReadyFilter(TransactionFilter&&); |
| void queueTransaction(TransactionState&&); |
| void onTransactionQueueStalled(const TransactionState&, sp<ITransactionCompletedListener>&); |
| void removeFromStalledTransactions(uint64_t transactionId); |
| |
| private: |
| // For unit tests |
| friend class TestableSurfaceFlinger; |
| |
| int flushPendingTransactionQueues(std::vector<TransactionState>&, TransactionFlushState&); |
| TransactionReadiness applyFilters(TransactionFlushState&); |
| std::unordered_map<sp<IBinder>, std::queue<TransactionState>, IListenerHash> |
| mPendingTransactionQueues; |
| LocklessQueue<TransactionState> mLocklessTransactionQueue; |
| std::atomic<size_t> mPendingTransactionCount = 0; |
| ftl::SmallVector<TransactionFilter, 2> mTransactionReadyFilters; |
| std::vector<uint64_t> mStalledTransactions; |
| }; |
| |
| } // namespace android |