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_STW_YOUNG_GC_H 17 #define ECMASCRIPT_MEM_STW_YOUNG_GC_H 18 19 #include "ecmascript/mem/allocator.h" 20 #include "ecmascript/mem/clock_scope.h" 21 #include "ecmascript/mem/garbage_collector.h" 22 #include "ecmascript/mem/heap.h" 23 #include "ecmascript/mem/mark_stack.h" 24 #include "ecmascript/mem/mark_word.h" 25 #include "ecmascript/mem/mem.h" 26 #include "ecmascript/mem/slots.h" 27 #include "ecmascript/mem/tlab_allocator.h" 28 #include "ecmascript/mem/visitor.h" 29 #include "ecmascript/mem/work_manager.h" 30 31 #include "libpandabase/os/mutex.h" 32 33 namespace panda { 34 namespace ecmascript { 35 class STWYoungGC : public GarbageCollector { 36 public: 37 STWYoungGC(Heap *heap, bool parallelGC); 38 ~STWYoungGC() override = default; 39 NO_COPY_SEMANTIC(STWYoungGC); 40 NO_MOVE_SEMANTIC(STWYoungGC); 41 ConfigParallelGC(bool parallelGC)42 void ConfigParallelGC(bool parallelGC) 43 { 44 parallelGC_ = parallelGC; 45 } 46 virtual void RunPhases() override; 47 48 protected: 49 virtual void Initialize() override; 50 virtual void Mark() override; 51 virtual void Sweep() override; 52 virtual void Finish() override; 53 54 private: UpdatePromotedSlot(TaggedObject * object,ObjectSlot slot)55 inline void UpdatePromotedSlot(TaggedObject *object, ObjectSlot slot) 56 { 57 #ifndef NDEBUG 58 JSTaggedValue value(slot.GetTaggedType()); 59 ASSERT(value.IsHeapObject()); 60 #endif 61 Region *objectRegion = Region::ObjectAddressToRange(object); 62 ASSERT(!objectRegion->InYoungSpace()); 63 objectRegion->InsertOldToNewRSet(slot.SlotAddress()); 64 } 65 66 Heap *heap_; 67 size_t promotedSize_ {0}; 68 size_t semiCopiedSize_ {0}; 69 size_t commitSize_ {0}; 70 71 // obtain from heap 72 bool parallelGC_ {false}; 73 WorkManager *workManager_ {nullptr}; 74 75 friend class TlabAllocator; 76 friend class WorkManager; 77 friend class Heap; 78 }; 79 } // namespace ecmascript 80 } // namespace panda 81 82 #endif // ECMASCRIPT_MEM_STW_YOUNG_GC_H 83