1 /* 2 * Copyright (C) 2017 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 #ifndef _LIBBACKTRACE_UNWIND_STACK_H 18 #define _LIBBACKTRACE_UNWIND_STACK_H 19 20 #include <stdint.h> 21 22 #include <memory> 23 #include <string> 24 25 #include <backtrace/BacktraceMap.h> 26 #include <unwindstack/Memory.h> 27 28 #include "BacktraceCurrent.h" 29 #include "BacktracePtrace.h" 30 31 class UnwindStackCurrent : public BacktraceCurrent { 32 public: 33 UnwindStackCurrent(pid_t pid, pid_t tid, BacktraceMap* map); 34 virtual ~UnwindStackCurrent() = default; 35 36 std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset) override; 37 38 bool UnwindFromContext(size_t num_ignore_frames, void* ucontext) override; 39 }; 40 41 class UnwindStackPtrace : public BacktracePtrace { 42 public: 43 UnwindStackPtrace(pid_t pid, pid_t tid, BacktraceMap* map); 44 virtual ~UnwindStackPtrace() = default; 45 46 bool Unwind(size_t num_ignore_frames, void* context) override; 47 48 std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset) override; 49 50 size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override; 51 52 private: 53 std::shared_ptr<unwindstack::Memory> memory_; 54 }; 55 56 #endif // _LIBBACKTRACE_UNWIND_STACK_H 57