1 /* 2 * Copyright (C) 2014 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_MAP_H 18 #define _LIBBACKTRACE_UNWIND_MAP_H 19 20 #include <pthread.h> 21 #include <stdint.h> 22 #include <sys/types.h> 23 24 #include <backtrace/BacktraceMap.h> 25 26 // The unw_map_cursor_t structure is different depending on whether it is 27 // the local or remote version. In order to get the correct version, include 28 // libunwind.h first then this header. 29 30 class UnwindMap : public BacktraceMap { 31 public: 32 explicit UnwindMap(pid_t pid); 33 34 unw_map_cursor_t* GetMapCursor() { return &map_cursor_; } 35 36 protected: 37 unw_map_cursor_t map_cursor_; 38 }; 39 40 class UnwindMapRemote : public UnwindMap { 41 public: 42 explicit UnwindMapRemote(pid_t pid); 43 virtual ~UnwindMapRemote(); 44 45 bool Build() override; 46 47 private: 48 bool GenerateMap(); 49 }; 50 51 class UnwindMapLocal : public UnwindMap { 52 public: 53 UnwindMapLocal(); 54 virtual ~UnwindMapLocal(); 55 56 bool Build() override; 57 58 void FillIn(uint64_t addr, backtrace_map_t* map) override; 59 60 void LockIterator() override { pthread_rwlock_rdlock(&map_lock_); } 61 void UnlockIterator() override { pthread_rwlock_unlock(&map_lock_); } 62 63 private: 64 bool GenerateMap(); 65 66 bool map_created_; 67 68 pthread_rwlock_t map_lock_; 69 }; 70 71 #endif // _LIBBACKTRACE_UNWIND_MAP_H 72
