1 /* 2 * Copyright (C) 2015 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 #ifndef SIMPLE_PERF_ENVIRONMENT_H_ 18 #define SIMPLE_PERF_ENVIRONMENT_H_ 19 20 #include <functional> 21 #include <string> 22 #include <vector> 23 #include "build_id.h" 24 25 std::vector<int> GetOnlineCpus(); 26 27 static const char* DEFAULT_KERNEL_MMAP_NAME = "[kernel.kallsyms]_text"; 28 29 struct KernelMmap { 30 std::string name; 31 uint64_t start_addr; 32 uint64_t len; 33 uint64_t pgoff; 34 }; 35 36 struct ModuleMmap { 37 std::string name; 38 uint64_t start_addr; 39 uint64_t len; 40 std::string filepath; 41 }; 42 43 bool GetKernelAndModuleMmaps(KernelMmap* kernel_mmap, std::vector<ModuleMmap>* module_mmaps); 44 45 struct ThreadComm { 46 pid_t tgid, tid; 47 std::string comm; 48 bool is_process; 49 }; 50 51 bool GetThreadComms(std::vector<ThreadComm>* thread_comms); 52 53 static const char* DEFAULT_EXECNAME_FOR_THREAD_MMAP = "//anon"; 54 55 struct ThreadMmap { 56 uint64_t start_addr; 57 uint64_t len; 58 uint64_t pgoff; 59 std::string name; 60 bool executable; 61 }; 62 63 bool GetThreadMmapsInProcess(pid_t pid, std::vector<ThreadMmap>* thread_mmaps); 64 65 static const char* DEFAULT_KERNEL_FILENAME_FOR_BUILD_ID = "[kernel.kallsyms]"; 66 67 bool GetKernelBuildId(BuildId* build_id); 68 bool GetModuleBuildId(const std::string& module_name, BuildId* build_id); 69 70 // Expose the following functions for unit tests. 71 std::vector<int> GetOnlineCpusFromString(const std::string& s); 72 73 struct KernelSymbol { 74 uint64_t addr; 75 char type; 76 const char* name; 77 const char* module; // If nullptr, the symbol is not in a kernel module. 78 }; 79 80 bool ProcessKernelSymbols(const std::string& symbol_file, 81 std::function<bool(const KernelSymbol&)> callback); 82 83 #endif // SIMPLE_PERF_ENVIRONMENT_H_ 84