1 // Copyright 2017 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef PROCFS_UTILS_H_
6 #define PROCFS_UTILS_H_
7 
8 #include <map>
9 #include <memory>
10 #include <string>
11 
12 #include "process_info.h"
13 
14 namespace procfs_utils {
15 
16 // ProcFS doesn't necessarly distinguish PID vs. TID, but all threads of a
17 // process have the same Thread Group ID which is equal to Process ID.
18 int ReadTgid(int pid);
19 
20 std::unique_ptr<ProcessInfo> ReadProcessInfo(int pid);
21 void ReadProcessThreads(ProcessInfo* process);
22 
23 bool ReadOomStats(ProcessSnapshot* snapshot);
24 bool ReadPageFaultsAndCpuTimeStats(ProcessSnapshot* snapshot);
25 
26 bool ReadMemInfoStats(std::map<std::string, uint64_t>* mem_info);
27 
28 }  // namespace procfs_utils
29 
30 #endif  // PROCFS_UTILS_H_
31