mirror of
https://github.com/openharmony/ark_runtime_core.git
synced 2026-07-19 21:23:32 -04:00
Ilya Trubachev
95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021-2022 Huawei Device Co., Ltd.
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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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#ifndef PANDA_RUNTIME_MEM_REM_SET_H_
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#define PANDA_RUNTIME_MEM_REM_SET_H_
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#include "runtime/mem/gc/card_table.h"
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namespace panda::mem {
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using CardPtr = CardTable::CardPtr;
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using CardList = PandaVector<CardPtr>;
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class RemSetLockConfig {
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public:
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using CommonLock = os::memory::Mutex;
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using DummyLock = os::memory::DummyLock;
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};
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class Region;
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/**
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* \brief Set in the Region. To record the regions and cards reference to this region.
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*/
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template <typename LockConfigT = RemSetLockConfig::CommonLock>
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class RemSet {
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public:
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explicit RemSet(Region *region);
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~RemSet();
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NO_COPY_SEMANTIC(RemSet);
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NO_MOVE_SEMANTIC(RemSet);
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void AddRef(const void *from_field_addr);
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template <typename ObjectVisitor>
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void VisitMarkedCards(const ObjectVisitor &object_visitor);
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void Clear();
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Region *GetRegion()
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{
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return region_;
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}
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CardList *GetCardList(Region *region);
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void SetCardTable(CardTable *card_table)
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{
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card_table_ = card_table;
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}
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/**
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* Used in the barrier. Record the reference from the region of obj_addr to the region of value_addr.
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* @param obj_addr - address of the object
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* @param value_addr - address of the reference in the field
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*/
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static void AddRefWithAddr(const void *obj_addr, const void *value_addr);
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/**
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* Used in the barrier. Record the reference from the region of addr to the region of the reference in it's fields.
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* @param addr - address of the object
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*/
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static void TraverseObjectToAddRef(const void *addr);
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private:
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CardPtr GetCardPtr(const void *addr);
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MemRange GetMemoryRange(CardPtr card);
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Region *region_;
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LockConfigT rem_set_lock_;
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PandaUnorderedMap<Region *, CardList *> regions_ GUARDED_BY(rem_set_lock_);
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InternalAllocatorPtr allocator_;
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CardTable *card_table_ = nullptr;
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};
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} // namespace panda::mem
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#endif // PANDA_RUNTIME_MEM_REM_SET_H_
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