mirror of
https://github.com/openharmony/neural_network_runtime.git
synced 2026-07-01 08:12:02 -04:00
yangyongjie
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
/*
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* Copyright (c) 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 NEURAL_NETWORK_RUNTIME_MEMORY_MANAGER_H
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#define NEURAL_NETWORK_RUNTIME_MEMORY_MANAGER_H
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#include <unordered_map>
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#include <mutex>
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#include "interfaces/kits/c/neural_network_runtime_type.h"
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namespace OHOS {
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namespace NeuralNetworkRuntime {
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const int INVALID_FD = -1;
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struct Memory {
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int fd;
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const void* data;
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size_t length;
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};
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class MemoryManager {
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public:
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~MemoryManager() = default;
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void* MapMemory(int fd, size_t length);
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OH_NN_ReturnCode UnMapMemory(const void* buffer);
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OH_NN_ReturnCode GetMemory(const void* buffer, Memory& memory) const;
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static MemoryManager* GetInstance()
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{
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static MemoryManager instance;
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return &instance;
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}
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private:
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MemoryManager() {};
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MemoryManager(const MemoryManager&) = delete;
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MemoryManager& operator=(const MemoryManager&) = delete;
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private:
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// key: OH_NN_Memory, value: fd
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std::unordered_map<const void*, Memory> m_memorys;
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std::mutex m_mtx;
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};
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} // namespace NeuralNetworkRuntime
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} // OHOS
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#endif // NEURAL_NETWORK_RUNTIME_MEMORY_MANAGER_H
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