1 /* 2 * Copyright (c) 2023 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 DFX_MEMORY_FILE_H 17 #define DFX_MEMORY_FILE_H 18 19 #include "dfx_memory.h" 20 21 namespace OHOS { 22 namespace HiviewDFX { 23 class DfxMemoryFile : public DfxMemory { 24 public: 25 static std::shared_ptr<DfxMemoryFile> CreateFileMemory(const std::string& path, uint64_t offset); 26 27 DfxMemoryFile() = default; ~DfxMemoryFile()28 virtual ~DfxMemoryFile() { Clear(); } 29 30 bool Init(const std::string& file, uint64_t offset, uint64_t size = UINT64_MAX); 31 32 size_t Read(uint64_t addr, void* dst, size_t size) override; 33 Size()34 size_t Size() { return size_; } 35 36 void Clear() override; 37 protected: 38 size_t size_ = 0; 39 size_t offset_ = 0; 40 uint8_t* data_ = nullptr; 41 }; 42 } // namespace HiviewDFX 43 } // namespace OHOS 44 #endif 45