1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <stdint.h> 20 21 #include <string> 22 #include <vector> 23 24 #include <unwindstack/Memory.h> 25 26 namespace unwindstack { 27 28 class MemoryBuffer : public Memory { 29 public: 30 MemoryBuffer() = default; ~MemoryBuffer()31 virtual ~MemoryBuffer() { free(raw_); } 32 33 size_t Read(uint64_t addr, void* dst, size_t size) override; 34 35 uint8_t* GetPtr(size_t offset) override; 36 Resize(size_t size)37 bool Resize(size_t size) { 38 void* new_raw = realloc(raw_, size); 39 if (new_raw == nullptr) { 40 free(raw_); 41 raw_ = nullptr; 42 size_ = 0; 43 return false; 44 } 45 raw_ = reinterpret_cast<uint8_t*>(new_raw); 46 size_ = size; 47 return true; 48 } 49 Size()50 uint64_t Size() { return size_; } 51 52 private: 53 uint8_t* raw_ = nullptr; 54 size_t size_ = 0; 55 }; 56 57 } // namespace unwindstack 58