thread_tree.cpp revision 9970a2344333f2c19d9126cfec4f833f50ff2f22
160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui/* 260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * Copyright (C) 2015 The Android Open Source Project 360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * 460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * Licensed under the Apache License, Version 2.0 (the "License"); 560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * you may not use this file except in compliance with the License. 660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * You may obtain a copy of the License at 760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * 860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * http://www.apache.org/licenses/LICENSE-2.0 960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * 1060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * Unless required by applicable law or agreed to in writing, software 1160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * distributed under the License is distributed on an "AS IS" BASIS, 1260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * See the License for the specific language governing permissions and 1460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui * limitations under the License. 1560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui */ 1660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 1760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui#include "thread_tree.h" 1860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 19c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui#include <limits> 20c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui 2166dd09e8e2407082ce93bf0784de641298131912Elliott Hughes#include <android-base/logging.h> 22c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui 2360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui#include "environment.h" 2473d8078e6e5ef92b2301386ce96260bd99efacbbYabin Cui#include "perf_event.h" 2573d8078e6e5ef92b2301386ce96260bd99efacbbYabin Cui#include "record.h" 2660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 27040f7b4c62ce49f0af0746640e94d415764262cdYabin Cuinamespace simpleperf { 28040f7b4c62ce49f0af0746640e94d415764262cdYabin Cui 299970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuibool MapComparator::operator()(const MapEntry* map1, 309970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui const MapEntry* map2) const { 3160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (map1->start_addr != map2->start_addr) { 3260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return map1->start_addr < map2->start_addr; 3360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 349970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui // Compare map->len instead of map->get_end_addr() here. Because we set map's 359970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui // len to std::numeric_limits<uint64_t>::max() in FindMapByAddr(), which makes 36b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui // map->get_end_addr() overflow. 37b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui if (map1->len != map2->len) { 38b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui return map1->len < map2->len; 3960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 4060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (map1->time != map2->time) { 4160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return map1->time < map2->time; 4260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 4360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return false; 4460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 4560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 4660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cuivoid ThreadTree::AddThread(int pid, int tid, const std::string& comm) { 4760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto it = thread_tree_.find(tid); 4860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (it == thread_tree_.end()) { 4960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui ThreadEntry* thread = new ThreadEntry{ 5060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui pid, tid, 5160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui "unknown", // comm 5260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui std::set<MapEntry*, MapComparator>(), // maps 5360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui }; 549970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui auto pair = thread_tree_.insert( 559970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui std::make_pair(tid, std::unique_ptr<ThreadEntry>(thread))); 5660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui CHECK(pair.second); 5760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui it = pair.first; 5860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 599970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui thread_comm_storage_.push_back( 609970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui std::unique_ptr<std::string>(new std::string(comm))); 6160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui it->second->comm = thread_comm_storage_.back()->c_str(); 6260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 6360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 6460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cuivoid ThreadTree::ForkThread(int pid, int tid, int ppid, int ptid) { 6560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui ThreadEntry* parent = FindThreadOrNew(ppid, ptid); 6660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui ThreadEntry* child = FindThreadOrNew(pid, tid); 6760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui child->comm = parent->comm; 6860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui child->maps = parent->maps; 6960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 7060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 7160a0ea96c0fb9e807c899759256df5e20bd904bdYabin CuiThreadEntry* ThreadTree::FindThreadOrNew(int pid, int tid) { 7260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto it = thread_tree_.find(tid); 7360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (it == thread_tree_.end()) { 7460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui AddThread(pid, tid, "unknown"); 7560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui it = thread_tree_.find(tid); 7660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } else { 775f2a170a577258a2792bd768a8a776a562f4e6c2Yabin Cui if (pid != it->second.get()->pid) { 785f2a170a577258a2792bd768a8a776a562f4e6c2Yabin Cui // TODO: b/22185053. 799970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui LOG(DEBUG) << "unexpected (pid, tid) pair: expected (" 809970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui << it->second.get()->pid << ", " << tid << "), actual (" << pid 819970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui << ", " << tid << ")"; 825f2a170a577258a2792bd768a8a776a562f4e6c2Yabin Cui } 8360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 8460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return it->second.get(); 8560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 8660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 879970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuivoid ThreadTree::AddKernelMap(uint64_t start_addr, uint64_t len, uint64_t pgoff, 889970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui uint64_t time, const std::string& filename) { 8960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui // kernel map len can be 0 when record command is not run in supervisor mode. 9060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (len == 0) { 9160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return; 9260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 93c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui Dso* dso = FindKernelDsoOrNew(filename); 949970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui MapEntry* map = 959970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui AllocateMap(MapEntry(start_addr, len, pgoff, time, dso, true)); 96547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui FixOverlappedMap(&kernel_map_tree_, map); 9760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto pair = kernel_map_tree_.insert(map); 9860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui CHECK(pair.second); 9960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 10060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 101c84856093e8bf4350d30fc521dc0f1c800c5270bYabin CuiDso* ThreadTree::FindKernelDsoOrNew(const std::string& filename) { 10260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (filename == DEFAULT_KERNEL_MMAP_NAME) { 10360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return kernel_dso_.get(); 10460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 10560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto it = module_dso_tree_.find(filename); 10660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (it == module_dso_tree_.end()) { 107c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui module_dso_tree_[filename] = Dso::CreateDso(DSO_KERNEL_MODULE, filename); 10860a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui it = module_dso_tree_.find(filename); 10960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 11060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return it->second.get(); 11160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 11260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 1139970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuivoid ThreadTree::AddThreadMap(int pid, int tid, uint64_t start_addr, 1149970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui uint64_t len, uint64_t pgoff, uint64_t time, 1159970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui const std::string& filename) { 11660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui ThreadEntry* thread = FindThreadOrNew(pid, tid); 117c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui Dso* dso = FindUserDsoOrNew(filename); 1189970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui MapEntry* map = 1199970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui AllocateMap(MapEntry(start_addr, len, pgoff, time, dso, false)); 120547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui FixOverlappedMap(&thread->maps, map); 12160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto pair = thread->maps.insert(map); 12260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui CHECK(pair.second); 12360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 12460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 125c84856093e8bf4350d30fc521dc0f1c800c5270bYabin CuiDso* ThreadTree::FindUserDsoOrNew(const std::string& filename) { 12660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto it = user_dso_tree_.find(filename); 12760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (it == user_dso_tree_.end()) { 128c84856093e8bf4350d30fc521dc0f1c800c5270bYabin Cui user_dso_tree_[filename] = Dso::CreateDso(DSO_ELF_FILE, filename); 12960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui it = user_dso_tree_.find(filename); 13060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 13160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return it->second.get(); 13260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 13360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 134547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin CuiMapEntry* ThreadTree::AllocateMap(const MapEntry& value) { 135547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui MapEntry* map = new MapEntry(value); 136547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui map_storage_.push_back(std::unique_ptr<MapEntry>(map)); 137547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui return map; 138547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui} 139547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui 1409970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuivoid ThreadTree::FixOverlappedMap(std::set<MapEntry*, MapComparator>* map_set, 1419970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui const MapEntry* map) { 142547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui for (auto it = map_set->begin(); it != map_set->end();) { 143547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui if ((*it)->start_addr >= map->get_end_addr()) { 144547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui // No more overlapped maps. 145547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui break; 146547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui } 147547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui if ((*it)->get_end_addr() <= map->start_addr) { 148547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui ++it; 149547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui } else { 150547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui MapEntry* old = *it; 151547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui if (old->start_addr < map->start_addr) { 1529970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui MapEntry* before = AllocateMap( 1539970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui MapEntry(old->start_addr, map->start_addr - old->start_addr, 1549970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui old->pgoff, old->time, old->dso, old->in_kernel)); 155547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui map_set->insert(before); 156547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui } 157547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui if (old->get_end_addr() > map->get_end_addr()) { 1589970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui MapEntry* after = AllocateMap(MapEntry( 1599970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui map->get_end_addr(), old->get_end_addr() - map->get_end_addr(), 1609970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui map->get_end_addr() - old->start_addr + old->pgoff, old->time, 1619970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui old->dso, old->in_kernel)); 162547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui map_set->insert(after); 163547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui } 164547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui 165547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui it = map_set->erase(it); 166547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui } 167547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui } 168547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui} 169547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui 17060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cuistatic bool IsAddrInMap(uint64_t addr, const MapEntry* map) { 171547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui return (addr >= map->start_addr && addr < map->get_end_addr()); 17260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 17360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 1749970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuistatic MapEntry* FindMapByAddr(const std::set<MapEntry*, MapComparator>& maps, 1759970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui uint64_t addr) { 1769970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui // Construct a map_entry which is strictly after the searched map_entry, based 1779970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui // on MapComparator. 178547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui MapEntry find_map(addr, std::numeric_limits<uint64_t>::max(), 0, 179b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui std::numeric_limits<uint64_t>::max(), nullptr, false); 18060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui auto it = maps.upper_bound(&find_map); 18160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (it != maps.begin() && IsAddrInMap(addr, *--it)) { 18260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return *it; 18360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 18460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return nullptr; 18560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 18660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 1879970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuiconst MapEntry* ThreadTree::FindMap(const ThreadEntry* thread, uint64_t ip, 1889970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui bool in_kernel) { 18960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui MapEntry* result = nullptr; 19060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (!in_kernel) { 19160a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui result = FindMapByAddr(thread->maps, ip); 19260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } else { 19360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui result = FindMapByAddr(kernel_map_tree_, ip); 19460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 19560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return result != nullptr ? result : &unknown_map_; 19660a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 19760a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui 198b64a86327afe2b77dab7d724d363386c674163b6Yabin Cuiconst MapEntry* ThreadTree::FindMap(const ThreadEntry* thread, uint64_t ip) { 199b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui MapEntry* result = FindMapByAddr(thread->maps, ip); 200b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui if (result != nullptr) { 201b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui return result; 202b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui } 203b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui result = FindMapByAddr(kernel_map_tree_, ip); 204b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui return result != nullptr ? result : &unknown_map_; 205b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui} 206b64a86327afe2b77dab7d724d363386c674163b6Yabin Cui 2079970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cuiconst Symbol* ThreadTree::FindSymbol(const MapEntry* map, uint64_t ip, 2089970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui uint64_t* pvaddr_in_file) { 209547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui uint64_t vaddr_in_file; 21060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (map->dso == kernel_dso_.get()) { 211547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui vaddr_in_file = ip; 21260a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } else { 213547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui vaddr_in_file = ip - map->start_addr + map->dso->MinVirtualAddress(); 21460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 215547c60e4dd29c5788d5948ad348acf33a55d6ed6Yabin Cui const Symbol* symbol = map->dso->FindSymbol(vaddr_in_file); 216b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui if (symbol == nullptr && map->in_kernel && map->dso != kernel_dso_.get()) { 217b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui // It is in a kernel module, but we can't find the kernel module file, or 218b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui // the kernel module file contains no symbol. Try finding the symbol in 219b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui // /proc/kallsyms. 220b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui vaddr_in_file = ip; 221b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui symbol = kernel_dso_->FindSymbol(vaddr_in_file); 222b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui } 22360a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui if (symbol == nullptr) { 22460a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui symbol = &unknown_symbol_; 22560a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui } 2269970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui if (pvaddr_in_file != nullptr) { 2279970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui *pvaddr_in_file = vaddr_in_file; 2289970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui } 22960a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui return symbol; 23060a0ea96c0fb9e807c899759256df5e20bd904bdYabin Cui} 23173d8078e6e5ef92b2301386ce96260bd99efacbbYabin Cui 2326965d42c43f12fd2dfcca3c490b51edc67822586Yabin Cuiconst Symbol* ThreadTree::FindKernelSymbol(uint64_t ip) { 2336965d42c43f12fd2dfcca3c490b51edc67822586Yabin Cui const MapEntry* map = FindMap(nullptr, ip, true); 2349970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui return FindSymbol(map, ip, nullptr); 2356965d42c43f12fd2dfcca3c490b51edc67822586Yabin Cui} 2366965d42c43f12fd2dfcca3c490b51edc67822586Yabin Cui 237767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cuivoid ThreadTree::ClearThreadAndMap() { 238b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui thread_tree_.clear(); 239b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui thread_comm_storage_.clear(); 240b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui kernel_map_tree_.clear(); 241b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui map_storage_.clear(); 242b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui} 243b7f481f59126456b0e708a76f40fa88224f3531bYabin Cui 244767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cuivoid ThreadTree::Update(const Record& record) { 245b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui if (record.type() == PERF_RECORD_MMAP) { 246f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui const MmapRecord& r = *static_cast<const MmapRecord*>(&record); 247b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui if (r.InKernel()) { 2489970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui AddKernelMap(r.data.addr, r.data.len, r.data.pgoff, 2499970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui r.sample_id.time_data.time, r.filename); 250f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui } else { 2519970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui AddThreadMap(r.data.pid, r.data.tid, r.data.addr, r.data.len, 2529970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui r.data.pgoff, r.sample_id.time_data.time, r.filename); 253f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui } 254b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui } else if (record.type() == PERF_RECORD_MMAP2) { 255f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui const Mmap2Record& r = *static_cast<const Mmap2Record*>(&record); 256b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui if (r.InKernel()) { 2579970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui AddKernelMap(r.data.addr, r.data.len, r.data.pgoff, 2589970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui r.sample_id.time_data.time, r.filename); 259f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui } else { 2609970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui std::string filename = (r.filename == DEFAULT_EXECNAME_FOR_THREAD_MMAP) 2619970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui ? "[unknown]" 2629970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui : r.filename; 2639970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui AddThreadMap(r.data.pid, r.data.tid, r.data.addr, r.data.len, 2649970a2344333f2c19d9126cfec4f833f50ff2f22Yabin Cui r.data.pgoff, r.sample_id.time_data.time, filename); 26573d8078e6e5ef92b2301386ce96260bd99efacbbYabin Cui } 266b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui } else if (record.type() == PERF_RECORD_COMM) { 267f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui const CommRecord& r = *static_cast<const CommRecord*>(&record); 268767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui AddThread(r.data.pid, r.data.tid, r.comm); 269b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui } else if (record.type() == PERF_RECORD_FORK) { 270f8258896a364b6c996b6d6816b88849cc8d0a488Yabin Cui const ForkRecord& r = *static_cast<const ForkRecord*>(&record); 271767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui ForkThread(r.data.pid, r.data.tid, r.data.ppid, r.data.ptid); 272b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui } else if (record.type() == SIMPLE_PERF_RECORD_KERNEL_SYMBOL) { 273b42129797f17f990ea5a88c6bdc7446000cc361cYabin Cui const auto& r = *static_cast<const KernelSymbolRecord*>(&record); 2741761a271faf98050891ba6e918993225782c811aYabin Cui Dso::SetKallsyms(std::move(r.kallsyms)); 275767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui } else if (record.type() == SIMPLE_PERF_RECORD_DSO) { 276767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui auto& r = *static_cast<const DsoRecord*>(&record); 277767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui Dso* dso = nullptr; 278767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui if (r.dso_type == DSO_KERNEL || r.dso_type == DSO_KERNEL_MODULE) { 279767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui dso = FindKernelDsoOrNew(r.dso_name); 280767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui } else { 281767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui dso = FindUserDsoOrNew(r.dso_name); 282767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui } 283767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui dso_id_to_dso_map_[r.dso_id] = dso; 284767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui } else if (record.type() == SIMPLE_PERF_RECORD_SYMBOL) { 285767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui auto& r = *static_cast<const SymbolRecord*>(&record); 286767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui Dso* dso = dso_id_to_dso_map_[r.dso_id]; 287767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui CHECK(dso != nullptr); 288767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui dso->InsertSymbol(Symbol(r.name, r.addr, r.len)); 28973d8078e6e5ef92b2301386ce96260bd99efacbbYabin Cui } 29073d8078e6e5ef92b2301386ce96260bd99efacbbYabin Cui} 291767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui 292767dd17947f1ae9dd3d02f738d442a23ed76f2f6Yabin Cui} // namespace simpleperf 293