1 /* 2 * Copyright (c) 2022 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_FAULT_STACK_H 16 #define DFX_FAULT_STACK_H 17 18 #include <memory> 19 #include <vector> 20 #include "dfx_frame.h" 21 #include "dfx_regs.h" 22 23 namespace OHOS { 24 namespace HiviewDFX { 25 struct MemoryBlockInfo { 26 uintptr_t startAddr; 27 uintptr_t nameAddr; 28 uintptr_t size; 29 std::vector<uintptr_t> content; 30 std::string name; 31 }; 32 33 // Only print first three frame stack 34 class FaultStack { 35 public: FaultStack(int32_t tid)36 explicit FaultStack(int32_t tid) : tid_(tid) {}; 37 ~FaultStack() = default; 38 39 bool CollectStackInfo(std::shared_ptr<DfxRegs> reg, const std::vector<std::shared_ptr<DfxFrame>> &frames); 40 void Print() const; 41 42 private: 43 bool ReadTargetMemory(uintptr_t addr, uintptr_t &value) const; 44 uintptr_t AdjustAndCreateMemoryBlock(size_t index, uintptr_t prevSp, uintptr_t prevEndAddr, uintptr_t size); 45 uintptr_t PrintMemoryBlock(const MemoryBlockInfo& info) const; 46 void CreateMemoryBlock(uintptr_t addr, uintptr_t offset, uintptr_t size, std::string name); 47 48 private: 49 int32_t tid_; 50 std::vector<MemoryBlockInfo> blocks_; 51 }; 52 } // namespace HiviewDFX 53 } // namespace OHOS 54 #endif 55