1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ECMASCRIPT_MEM_CONCURRENT_SWEEPER_H 17 #define ECMASCRIPT_MEM_CONCURRENT_SWEEPER_H 18 19 #include <array> 20 #include <atomic> 21 22 #include "ecmascript/mem/space.h" 23 #include "ecmascript/platform/task.h" 24 #include "os/mutex.h" 25 26 namespace panda::ecmascript { 27 class ConcurrentSweeper { 28 public: 29 ConcurrentSweeper(Heap *heap, bool concurrentSweep); 30 ~ConcurrentSweeper() = default; 31 32 NO_COPY_SEMANTIC(ConcurrentSweeper); 33 NO_MOVE_SEMANTIC(ConcurrentSweeper); 34 35 void SweepPhases(bool fullGC = false); 36 37 void WaitAllTaskFinished(); 38 // Help to finish sweeping task. It can be called through js thread 39 void EnsureAllTaskFinished(); 40 // Ensure task finish 41 void EnsureTaskFinished(MemSpaceType type); 42 43 void PostConcurrentSweepTasks(bool fullGC = false); 44 private: 45 class SweeperTask : public Task { 46 public: SweeperTask(ConcurrentSweeper * sweeper,MemSpaceType type)47 SweeperTask(ConcurrentSweeper *sweeper, MemSpaceType type) : sweeper_(sweeper), type_(type) {}; 48 ~SweeperTask() override = default; 49 bool Run(uint32_t threadIndex) override; 50 51 NO_COPY_SEMANTIC(SweeperTask); 52 NO_MOVE_SEMANTIC(SweeperTask); 53 54 private: 55 ConcurrentSweeper *sweeper_; 56 MemSpaceType type_; 57 }; 58 59 void AsyncSweepSpace(MemSpaceType type, bool isMain); 60 void FinishSweeping(MemSpaceType type); 61 62 void WaitingTaskFinish(MemSpaceType type); 63 64 std::array<os::memory::Mutex, FREE_LIST_NUM> mutexs_; 65 std::array<os::memory::ConditionVariable, FREE_LIST_NUM> cvs_; 66 std::array<std::atomic_int, FREE_LIST_NUM> remainderTaskNum_ = {0, 0, 0}; 67 68 Heap *heap_; 69 bool concurrentSweep_ {false}; 70 bool isSweeping_ {false}; 71 MemSpaceType startSpaceType_ = MemSpaceType::OLD_SPACE; 72 }; 73 } // namespace panda::ecmascript 74 #endif // ECMASCRIPT_MEM_CONCURRENT_SWEEPER_H 75