| /* |
| * 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_THREAD_TREE_H_ |
| #define SIMPLE_PERF_THREAD_TREE_H_ |
| |
| #include <stdint.h> |
| |
| #include <limits> |
| #include <memory> |
| #include <set> |
| |
| #include "dso.h" |
| |
| struct Record; |
| |
| constexpr char DEFAULT_KERNEL_MMAP_NAME[] = "[kernel.kallsyms]"; |
| // Seen in perf.data file generated by perf. |
| constexpr char DEFAULT_KERNEL_MMAP_NAME_PERF[] = "[kernel.kallsyms]_text"; |
| constexpr char DEFAULT_EXECNAME_FOR_THREAD_MMAP[] = "//anon"; |
| |
| namespace simpleperf { |
| |
| struct MapEntry { |
| uint64_t start_addr; |
| uint64_t len; |
| uint64_t pgoff; |
| uint64_t time; // Map creation time. |
| Dso* dso; |
| bool in_kernel; |
| |
| MapEntry(uint64_t start_addr, uint64_t len, uint64_t pgoff, uint64_t time, |
| Dso* dso, bool in_kernel) |
| : start_addr(start_addr), |
| len(len), |
| pgoff(pgoff), |
| time(time), |
| dso(dso), |
| in_kernel(in_kernel) {} |
| MapEntry() {} |
| |
| uint64_t get_end_addr() const { return start_addr + len; } |
| }; |
| |
| struct MapComparator { |
| bool operator()(const MapEntry* map1, const MapEntry* map2) const; |
| }; |
| |
| using MapSet = std::set<MapEntry*, MapComparator>; |
| |
| struct ThreadEntry { |
| int pid; |
| int tid; |
| const char* comm; // It always refers to the latest comm. |
| MapSet* maps; |
| }; |
| |
| // ThreadTree contains thread information (in ThreadEntry) and mmap information |
| // (in MapEntry) of the monitored threads. It also has interface to access |
| // symbols in executable binaries mapped in the monitored threads. |
| class ThreadTree { |
| public: |
| ThreadTree() |
| : show_ip_for_unknown_symbol_(false), |
| show_mark_for_unknown_symbol_(false), |
| unknown_symbol_("unknown", 0, |
| std::numeric_limits<unsigned long long>::max()) { |
| unknown_dso_ = Dso::CreateDso(DSO_ELF_FILE, "unknown"); |
| unknown_map_ = MapEntry(0, std::numeric_limits<unsigned long long>::max(), |
| 0, 0, unknown_dso_.get(), false); |
| kernel_dso_ = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME); |
| // We can't dump comm for pid 0 from /proc, so add it's name here. |
| SetThreadName(0, 0, "swapper"); |
| } |
| |
| void SetThreadName(int pid, int tid, const std::string& comm); |
| void ForkThread(int pid, int tid, int ppid, int ptid); |
| ThreadEntry* FindThreadOrNew(int pid, int tid); |
| void AddKernelMap(uint64_t start_addr, uint64_t len, uint64_t pgoff, |
| uint64_t time, const std::string& filename); |
| void AddThreadMap(int pid, int tid, uint64_t start_addr, uint64_t len, |
| uint64_t pgoff, uint64_t time, const std::string& filename); |
| const MapEntry* FindMap(const ThreadEntry* thread, uint64_t ip, |
| bool in_kernel); |
| // Find map for an ip address when we don't know whether it is in kernel. |
| const MapEntry* FindMap(const ThreadEntry* thread, uint64_t ip); |
| const Symbol* FindSymbol(const MapEntry* map, uint64_t ip, |
| uint64_t* pvaddr_in_file, Dso** pdso = nullptr); |
| const Symbol* FindKernelSymbol(uint64_t ip); |
| const Symbol* UnknownSymbol() const { return &unknown_symbol_; } |
| |
| void ShowIpForUnknownSymbol() { show_ip_for_unknown_symbol_ = true; } |
| void ShowMarkForUnknownSymbol() { |
| show_mark_for_unknown_symbol_ = true; |
| unknown_symbol_ = Symbol("*unknown", 0, ULLONG_MAX); |
| } |
| // Clear thread and map information, but keep loaded dso information. It saves |
| // the time to reload dso information. |
| void ClearThreadAndMap(); |
| |
| void AddDsoInfo(const std::string& file_path, uint32_t file_type, |
| uint64_t min_vaddr, std::vector<Symbol>* symbols); |
| |
| // Update thread tree with information provided by record. |
| void Update(const Record& record); |
| |
| std::vector<Dso*> GetAllDsos() const; |
| |
| private: |
| ThreadEntry* CreateThread(int pid, int tid); |
| Dso* FindKernelDsoOrNew(const std::string& filename); |
| Dso* FindUserDsoOrNew(const std::string& filename); |
| MapEntry* AllocateMap(const MapEntry& value); |
| void FixOverlappedMap(MapSet* maps, const MapEntry* map); |
| |
| std::unordered_map<int, std::unique_ptr<ThreadEntry>> thread_tree_; |
| std::vector<std::unique_ptr<std::string>> thread_comm_storage_; |
| |
| std::vector<std::unique_ptr<MapSet>> map_set_storage_; |
| MapSet kernel_maps_; |
| std::vector<std::unique_ptr<MapEntry>> map_storage_; |
| MapEntry unknown_map_; |
| |
| std::unique_ptr<Dso> kernel_dso_; |
| std::unordered_map<std::string, std::unique_ptr<Dso>> module_dso_tree_; |
| std::unordered_map<std::string, std::unique_ptr<Dso>> user_dso_tree_; |
| std::unique_ptr<Dso> unknown_dso_; |
| bool show_ip_for_unknown_symbol_; |
| bool show_mark_for_unknown_symbol_; |
| Symbol unknown_symbol_; |
| }; |
| |
| } // namespace simpleperf |
| |
| using MapEntry = simpleperf::MapEntry; |
| using ThreadEntry = simpleperf::ThreadEntry; |
| using ThreadTree = simpleperf::ThreadTree; |
| |
| #endif // SIMPLE_PERF_THREAD_TREE_H_ |