mirror of
https://gitee.com/openharmony/arkcompiler_ets_runtime
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8c46634316
Merge pull request !5139 from 刘家华/master
119 lines
2.9 KiB
C++
119 lines
2.9 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_MEM_CHUNK_H
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#define ECMASCRIPT_MEM_CHUNK_H
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#include "ecmascript/common.h"
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#include "ecmascript/log_wrapper.h"
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#include "ecmascript/mem/ecma_list.h"
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#include "ecmascript/mem/area.h"
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namespace panda::ecmascript {
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class NativeAreaAllocator;
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enum class NativeFlag;
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class PUBLIC_API Chunk {
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public:
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static constexpr size_t MEM_ALIGN = 8U;
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explicit Chunk(NativeAreaAllocator *allocator);
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Chunk() = default;
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~Chunk()
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{
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ReleaseMemory();
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}
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NO_COPY_SEMANTIC(Chunk);
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NO_MOVE_SEMANTIC(Chunk);
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[[nodiscard]] void *Allocate(size_t size)
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{
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if (size == 0) {
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LOG_ECMA_MEM(FATAL) << "size must have a size bigger than 0";
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UNREACHABLE();
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}
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uintptr_t result = ptr_;
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size = AlignUp(size, MEM_ALIGN);
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if (UNLIKELY(size > end_ - ptr_)) {
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result = Expand(size);
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} else {
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ptr_ += size;
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}
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return reinterpret_cast<void *>(result);
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}
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template<class T>
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[[nodiscard]] T *NewArray(size_t size)
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{
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return static_cast<T *>(Allocate(size * sizeof(T)));
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}
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template<typename T, typename... Args>
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[[nodiscard]] T *New(Args &&... args)
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{
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auto p = reinterpret_cast<void *>(Allocate(sizeof(T)));
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new (p) T(std::forward<Args>(args)...);
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return reinterpret_cast<T *>(p);
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}
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template<class T>
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void Delete(T *ptr)
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{
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ASSERT(ptr != nullptr);
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// NOLINTNEXTLINE(readability-braces-around-statements,bugprone-suspicious-semicolon)
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if constexpr (std::is_class_v<T>) {
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ptr->~T();
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}
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Free(ptr);
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}
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void Free([[maybe_unused]] void *mem)
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{
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// do nothing
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}
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protected:
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uintptr_t ptr_ {0};
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uintptr_t end_ {0};
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Area *currentArea_ {nullptr};
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NativeAreaAllocator *allocator_ {nullptr};
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private:
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uintptr_t Expand(size_t size);
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Area *NewArea(size_t size);
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void ReleaseMemory();
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EcmaList<Area> areaList_ {};
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};
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class PUBLIC_API ChunkObject {
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public:
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void *operator new(size_t size, Chunk* chunk)
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{
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return chunk->Allocate(size);
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}
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void operator delete([[maybe_unused]] void* ptr)
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{
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UNREACHABLE();
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}
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};
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} // namespace panda::ecmascript
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#endif // ECMASCRIPT_MEM_CHUNK_H
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