mirror of
https://github.com/openharmony/ark_js_runtime.git
synced 2026-07-25 14:05:38 -04:00
zhangyukun
84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021 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 ECMASCRIPT_HPROF_STRING_HASHMAP_H
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#define ECMASCRIPT_HPROF_STRING_HASHMAP_H
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#include "ecmascript/js_thread.h"
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#include "ecmascript/mem/c_containers.h"
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#include "ecmascript/mem/c_string.h"
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#include "ecmascript/mem/heap.h"
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#include "os/mem.h"
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namespace panda::ecmascript {
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using StringKey = uint64_t;
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using StringId = uint64_t;
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// An Implementation for Native StringTable without Auto Mem-Management
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// To make sure when using String, it still stays where it was.
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class StringHashMap {
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public:
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explicit StringHashMap(const Heap *heap) : heap_(heap)
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{
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ASSERT(heap_ != nullptr);
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}
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~StringHashMap()
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{
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Clear();
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}
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NO_MOVE_SEMANTIC(StringHashMap);
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NO_COPY_SEMANTIC(StringHashMap);
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/*
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* The ID is the seat number in JSON file Range from 0~string_table_.size()
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*/
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StringId GetStringId(const CString *string) const;
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/*
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* Get all keys sorted by insert order
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*/
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const CVector<StringKey> &GetOrderedKeyStorage() const
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{
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return orderedKey_;
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}
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/*
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* Get string by its hash key
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*/
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CString *GetStringByKey(StringKey key) const;
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size_t GetCapcity() const
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{
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ASSERT(orderedKey_.size() == hashmap_.size());
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return orderedKey_.size();
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}
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/*
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* For external call to use this StringTable
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*/
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CString *GetString(CString as);
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private:
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StringKey GenerateStringKey(const CString *string) const;
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CString *FindOrInsertString(CString *string);
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CString *FormatString(CString *string) const;
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/*
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* Free all memory
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*/
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void Clear();
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const Heap *heap_;
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CVector<StringKey> orderedKey_; // Used for Serialize Order
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size_t index_{2}; // 2: Offset the String-Table Header
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CUnorderedMap<StringKey, StringId> indexMap_;
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CUnorderedMap<StringKey, CString *> hashmap_;
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};
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} // namespace panda::ecmascript
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#endif // ECMASCRIPT_HPROF_STRING_HASHMAP_H
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