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_BACKTRACE_IMPL_H 18 #define _LIBBACKTRACE_BACKTRACE_IMPL_H 19 20 #include <backtrace/Backtrace.h> 21 #include <backtrace/BacktraceMap.h> 22 23 #include <sys/types.h> 24 25 class BacktraceImpl { 26 public: 27 virtual ~BacktraceImpl() { } 28 29 virtual bool Unwind(size_t num_ignore_frames, ucontext_t* ucontext) = 0; 30 31 // The name returned is not demangled, Backtrace::GetFunctionName() 32 // takes care of demangling the name. 33 virtual std::string GetFunctionNameRaw(uintptr_t pc, uintptr_t* offset) = 0; 34 35 void SetParent(Backtrace* backtrace) { backtrace_obj_ = backtrace; } 36 37 inline pid_t Pid() { return backtrace_obj_->Pid(); } 38 inline pid_t Tid() { return backtrace_obj_->Tid(); } 39 40 inline const backtrace_map_t* FindMap(uintptr_t addr) { 41 return backtrace_obj_->FindMap(addr); 42 } 43 inline std::string GetFunctionName(uintptr_t pc, uintptr_t* offset) { 44 return backtrace_obj_->GetFunctionName(pc, offset); 45 } 46 inline BacktraceMap* GetMap() { return backtrace_obj_->GetMap(); } 47 48 protected: 49 inline std::vector<backtrace_frame_data_t>* GetFrames() { return &backtrace_obj_->frames_; } 50 51 Backtrace* backtrace_obj_; 52 }; 53 54 class BacktraceCurrent : public Backtrace { 55 public: 56 BacktraceCurrent(BacktraceImpl* impl, BacktraceMap* map); 57 virtual ~BacktraceCurrent(); 58 59 bool ReadWord(uintptr_t ptr, word_t* out_value); 60 }; 61 62 class BacktracePtrace : public Backtrace { 63 public: 64 BacktracePtrace(BacktraceImpl* impl, pid_t pid, pid_t tid, BacktraceMap* map); 65 virtual ~BacktracePtrace(); 66 67 bool ReadWord(uintptr_t ptr, word_t* out_value); 68 }; 69 70 Backtrace* CreateCurrentObj(BacktraceMap* map); 71 Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, BacktraceMap* map); 72 Backtrace* CreateThreadObj(pid_t tid, BacktraceMap* map); 73 74 #endif // _LIBBACKTRACE_BACKTRACE_IMPL_H 75
