| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SIMPLE_PERF_OFFLINE_UNWINDER_H_ |
| #define SIMPLE_PERF_OFFLINE_UNWINDER_H_ |
| |
| #include <memory> |
| #include <vector> |
| #include <unordered_map> |
| |
| #include "perf_regs.h" |
| #include "thread_tree.h" |
| |
| #if defined(__linux__) |
| #include <unwindstack/Maps.h> |
| #endif |
| |
| namespace simpleperf { |
| struct ThreadEntry; |
| |
| struct UnwindingResult { |
| // time used for unwinding, in ns. |
| uint64_t used_time; |
| enum { |
| UNKNOWN_REASON, |
| EXCEED_MAX_FRAMES_LIMIT, |
| ACCESS_REG_FAILED, |
| ACCESS_STACK_FAILED, |
| ACCESS_MEM_FAILED, |
| FIND_PROC_INFO_FAILED, |
| EXECUTE_DWARF_INSTRUCTION_FAILED, |
| DIFFERENT_ARCH, |
| MAP_MISSING, |
| } stop_reason; |
| union { |
| // for ACCESS_REG_FAILED |
| uint64_t regno; |
| // for ACCESS_MEM_FAILED and ACCESS_STACK_FAILED |
| uint64_t addr; |
| } stop_info; |
| uint64_t stack_start; |
| uint64_t stack_end; |
| }; |
| |
| #if defined(__linux__) |
| class UnwindMaps : public unwindstack::Maps { |
| public: |
| void UpdateMaps(const MapSet& map_set); |
| |
| private: |
| uint64_t version_ = 0u; |
| std::vector<const MapEntry*> entries_; |
| }; |
| |
| class OfflineUnwinder { |
| public: |
| OfflineUnwinder(bool collect_stat); |
| |
| bool UnwindCallChain(const ThreadEntry& thread, const RegSet& regs, const char* stack, |
| size_t stack_size, std::vector<uint64_t>* ips, std::vector<uint64_t>* sps); |
| |
| bool HasStat() const { |
| return collect_stat_; |
| } |
| |
| const UnwindingResult& GetUnwindingResult() const { |
| return unwinding_result_; |
| } |
| |
| bool IsCallChainBrokenForIncompleteJITDebugInfo() { |
| return is_callchain_broken_for_incomplete_jit_debug_info_; |
| } |
| |
| private: |
| bool collect_stat_; |
| UnwindingResult unwinding_result_; |
| bool is_callchain_broken_for_incomplete_jit_debug_info_; |
| |
| std::unordered_map<pid_t, UnwindMaps> cached_maps_; |
| }; |
| |
| #else // defined(__linux__) |
| |
| class OfflineUnwinder { |
| public: |
| OfflineUnwinder(bool) {} |
| bool UnwindCallChain(const ThreadEntry&, const RegSet&, const char*, size_t, |
| std::vector<uint64_t>*, std::vector<uint64_t>*) { |
| return false; |
| } |
| }; |
| |
| #endif // !defined(__linux__) |
| |
| } // namespace simpleperf |
| |
| #endif // SIMPLE_PERF_OFFLINE_UNWINDER_H_ |