1 /*
2  * Copyright (c) 2015 PLUMgrid, Inc.
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 #pragma once
18 
19 #include <memory>
20 #include <string>
21 #include <unistd.h>
22 #include <vector>
23 
24 namespace ebpf {
25 
26 #ifdef __cpp_lib_make_unique
27 using std::make_unique;
28 #else
29 template <class T, class... Args>
30 typename std::enable_if<!std::is_array<T>::value, std::unique_ptr<T>>::type
31 make_unique(Args &&... args) {
32   return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
33 }
34 #endif
35 
36 std::vector<int> get_online_cpus();
37 
38 std::vector<int> get_possible_cpus();
39 
40 std::string get_pid_exe(pid_t pid);
41 
42 std::string tracefs_path();
43 
44 std::string tracepoint_format_file(std::string const& category,
45                                    std::string const& event);
46 
47 std::string parse_tracepoint(std::istream &input, std::string const& category,
48                              std::string const& event);
49 }  // namespace ebpf
50