2 * Copyright (C) 2015 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef SIMPLE_PERF_THREAD_TREE_H_
18 #define SIMPLE_PERF_THREAD_TREE_H_
30 constexpr char DEFAULT_KERNEL_MMAP_NAME[] = "[kernel.kallsyms]";
31 // Seen in perf.data file generated by perf.
32 constexpr char DEFAULT_KERNEL_MMAP_NAME_PERF[] = "[kernel.kallsyms]_text";
33 constexpr char DEFAULT_EXECNAME_FOR_THREAD_MMAP[] = "//anon";
35 namespace simpleperf {
41 uint64_t time; // Map creation time.
45 MapEntry(uint64_t start_addr, uint64_t len, uint64_t pgoff, uint64_t time,
46 Dso* dso, bool in_kernel)
47 : start_addr(start_addr),
52 in_kernel(in_kernel) {}
55 uint64_t get_end_addr() const { return start_addr + len; }
58 struct MapComparator {
59 bool operator()(const MapEntry* map1, const MapEntry* map2) const;
62 using MapSet = std::set<MapEntry*, MapComparator>;
67 const char* comm; // It always refers to the latest comm.
71 // ThreadTree contains thread information (in ThreadEntry) and mmap information
72 // (in MapEntry) of the monitored threads. It also has interface to access
73 // symbols in executable binaries mapped in the monitored threads.
77 : show_ip_for_unknown_symbol_(false),
78 show_mark_for_unknown_symbol_(false),
79 unknown_symbol_("unknown", 0,
80 std::numeric_limits<unsigned long long>::max()) {
81 unknown_dso_ = Dso::CreateDso(DSO_ELF_FILE, "unknown");
82 unknown_map_ = MapEntry(0, std::numeric_limits<unsigned long long>::max(),
83 0, 0, unknown_dso_.get(), false);
84 kernel_dso_ = Dso::CreateDso(DSO_KERNEL, DEFAULT_KERNEL_MMAP_NAME);
85 // We can't dump comm for pid 0 from /proc, so add it's name here.
86 SetThreadName(0, 0, "swapper");
89 void SetThreadName(int pid, int tid, const std::string& comm);
90 void ForkThread(int pid, int tid, int ppid, int ptid);
91 ThreadEntry* FindThreadOrNew(int pid, int tid);
92 void AddKernelMap(uint64_t start_addr, uint64_t len, uint64_t pgoff,
93 uint64_t time, const std::string& filename);
94 void AddThreadMap(int pid, int tid, uint64_t start_addr, uint64_t len,
95 uint64_t pgoff, uint64_t time, const std::string& filename);
96 const MapEntry* FindMap(const ThreadEntry* thread, uint64_t ip,
98 // Find map for an ip address when we don't know whether it is in kernel.
99 const MapEntry* FindMap(const ThreadEntry* thread, uint64_t ip);
100 const Symbol* FindSymbol(const MapEntry* map, uint64_t ip,
101 uint64_t* pvaddr_in_file, Dso** pdso = nullptr);
102 const Symbol* FindKernelSymbol(uint64_t ip);
103 bool IsUnknownDso(const Dso* dso) const { return dso == unknown_dso_.get(); }
104 const Symbol* UnknownSymbol() const { return &unknown_symbol_; }
106 void ShowIpForUnknownSymbol() { show_ip_for_unknown_symbol_ = true; }
107 void ShowMarkForUnknownSymbol() {
108 show_mark_for_unknown_symbol_ = true;
109 unknown_symbol_ = Symbol("*unknown", 0, ULLONG_MAX);
111 // Clear thread and map information, but keep loaded dso information. It saves
112 // the time to reload dso information.
113 void ClearThreadAndMap();
115 void AddDsoInfo(const std::string& file_path, uint32_t file_type,
116 uint64_t min_vaddr, std::vector<Symbol>* symbols);
118 // Update thread tree with information provided by record.
119 void Update(const Record& record);
121 std::vector<Dso*> GetAllDsos() const;
122 std::vector<const ThreadEntry*> GetAllThreads() const;
125 ThreadEntry* CreateThread(int pid, int tid);
126 Dso* FindKernelDsoOrNew(const std::string& filename);
127 Dso* FindUserDsoOrNew(const std::string& filename, uint64_t start_addr = 0);
128 MapEntry* AllocateMap(const MapEntry& value);
129 void FixOverlappedMap(MapSet* maps, const MapEntry* map);
131 std::unordered_map<int, std::unique_ptr<ThreadEntry>> thread_tree_;
132 std::vector<std::unique_ptr<std::string>> thread_comm_storage_;
134 std::vector<std::unique_ptr<MapSet>> map_set_storage_;
136 std::vector<std::unique_ptr<MapEntry>> map_storage_;
137 MapEntry unknown_map_;
139 std::unique_ptr<Dso> kernel_dso_;
140 std::unordered_map<std::string, std::unique_ptr<Dso>> module_dso_tree_;
141 std::unordered_map<std::string, std::unique_ptr<Dso>> user_dso_tree_;
142 std::unique_ptr<Dso> unknown_dso_;
143 bool show_ip_for_unknown_symbol_;
144 bool show_mark_for_unknown_symbol_;
145 Symbol unknown_symbol_;
148 } // namespace simpleperf
150 using MapEntry = simpleperf::MapEntry;
151 using ThreadEntry = simpleperf::ThreadEntry;
152 using ThreadTree = simpleperf::ThreadTree;
154 #endif // SIMPLE_PERF_THREAD_TREE_H_