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 #ifndef DFX_MMAP_H 16 #define DFX_MMAP_H 17 18 #include <atomic> 19 #include <cstdint> 20 #include <string> 21 #if !is_mingw 22 #include <sys/mman.h> 23 #else 24 #include "dfx_nonlinux_define.h" 25 #endif 26 #include "dfx_memory.h" 27 28 namespace OHOS { 29 namespace HiviewDFX { 30 class DfxMmap : public DfxMemory { 31 public: 32 DfxMmap() = default; ~DfxMmap()33 virtual ~DfxMmap() { Clear(); } 34 35 bool Init(const int fd, const size_t size, const off_t offset = 0); 36 bool Init(uint8_t *decompressedData, size_t size); 37 void Clear(); 38 Get()39 inline void* Get() 40 { 41 if (mmap_ != MAP_FAILED) { 42 return mmap_; 43 } 44 return nullptr; 45 } Size()46 inline size_t Size() { return size_; } SetNeedUnmap(bool need)47 inline void SetNeedUnmap(bool need) { needUnmap_ = need; } 48 49 size_t Read(uintptr_t& addr, void* val, size_t size, bool incre = false) override; 50 51 private: 52 void *mmap_ = MAP_FAILED; 53 size_t size_ = 0; 54 bool needUnmap_ = true; 55 }; 56 } // namespace HiviewDFX 57 } // namespace OHOS 58 #endif 59