1 /* 2 * Copyright (C) 2020 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 #pragma once 18 19 #include <unwindstack/Maps.h> 20 #include <unwindstack/Regs.h> 21 22 #include "thread_tree.h" 23 24 namespace simpleperf { 25 26 class UnwindMaps : public unwindstack::Maps { 27 public: 28 void UpdateMaps(const MapSet& map_set); 29 30 private: 31 uint64_t version_ = 0u; 32 std::vector<const MapEntry*> entries_; 33 }; 34 35 class OfflineUnwinderImpl : public OfflineUnwinder { 36 public: OfflineUnwinderImpl(bool collect_stat)37 OfflineUnwinderImpl(bool collect_stat) : collect_stat_(collect_stat) { 38 unwindstack::Elf::SetCachingEnabled(true); 39 } 40 41 bool UnwindCallChain(const ThreadEntry& thread, const RegSet& regs, const char* stack, 42 size_t stack_size, std::vector<uint64_t>* ips, 43 std::vector<uint64_t>* sps) override; 44 45 void LoadMetaInfo(const std::unordered_map<std::string, std::string>& info_map) override; 46 unwindstack::Regs* GetBacktraceRegs(const RegSet& regs); 47 48 private: 49 bool collect_stat_; 50 std::unordered_map<pid_t, UnwindMaps> cached_maps_; 51 uint64_t arm64_pac_mask_ = 0; 52 }; 53 54 } // namespace simpleperf 55