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
25std::vector<int> GetOnlineCpus();
26
27static const char* DEFAULT_KERNEL_MMAP_NAME = "[kernel.kallsyms]_text";
28
29struct KernelMmap {
30  std::string name;
31  uint64_t start_addr;
32  uint64_t len;
33  uint64_t pgoff;
34};
35
36struct ModuleMmap {
37  std::string name;
38  uint64_t start_addr;
39  uint64_t len;
40  std::string filepath;
41};
42
43bool GetKernelAndModuleMmaps(KernelMmap* kernel_mmap, std::vector<ModuleMmap>* module_mmaps);
44
45struct ThreadComm {
46  pid_t tgid, tid;
47  std::string comm;
48  bool is_process;
49};
50
51bool GetThreadComms(std::vector<ThreadComm>* thread_comms);
52
53static const char* DEFAULT_EXECNAME_FOR_THREAD_MMAP = "//anon";
54
55struct ThreadMmap {
56  uint64_t start_addr;
57  uint64_t len;
58  uint64_t pgoff;
59  std::string name;
60  bool executable;
61};
62
63bool GetThreadMmapsInProcess(pid_t pid, std::vector<ThreadMmap>* thread_mmaps);
64
65static const char* DEFAULT_KERNEL_FILENAME_FOR_BUILD_ID = "[kernel.kallsyms]";
66
67bool GetKernelBuildId(BuildId* build_id);
68bool GetModuleBuildId(const std::string& module_name, BuildId* build_id);
69
70// Expose the following functions for unit tests.
71std::vector<int> GetOnlineCpusFromString(const std::string& s);
72
73struct 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
80bool ProcessKernelSymbols(const std::string& symbol_file,
81                          std::function<bool(const KernelSymbol&)> callback);
82
83#endif  // SIMPLE_PERF_ENVIRONMENT_H_
84