1 /* 2 * Copyright (C) 2013 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_CURRENT_H 18 #define _LIBBACKTRACE_UNWIND_CURRENT_H 19 20 #include <stdint.h> 21 #include <sys/types.h> 22 #include <ucontext.h> 23 24 #include <string> 25 26 #include <backtrace/Backtrace.h> 27 #include <backtrace/BacktraceMap.h> 28 29 #include "BacktraceCurrent.h" 30 31 #define UNW_LOCAL_ONLY 32 #include <libunwind.h> 33 34 class UnwindCurrent : public BacktraceCurrent { 35 public: 36 UnwindCurrent(pid_t pid, pid_t tid, BacktraceMap* map) : BacktraceCurrent(pid, tid, map) {} 37 virtual ~UnwindCurrent() {} 38 39 std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset) override; 40 41 private: 42 void GetUnwContextFromUcontext(const ucontext_t* ucontext); 43 44 bool UnwindFromContext(size_t num_ignore_frames, ucontext_t* ucontext) override; 45 46 unw_context_t context_; 47 48 bool initialized_ = false; 49 }; 50 51 #endif // _LIBBACKTRACE_UNWIND_CURRENT_H 52
