process-cpp  3.0.0
A simple convenience library for handling processes in C++11.
oom_score.cpp
Go to the documentation of this file.
1 /*
2  * Copyright © 2013 Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License version 3,
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by: Thomas Voß <thomas.voss@canonical.com>
17  */
18 
20 
21 #include <core/posix/process.h>
22 
23 #include <fstream>
24 #include <sstream>
25 
26 namespace core
27 {
28 namespace posix
29 {
30 namespace linux
31 {
32 namespace proc
33 {
34 namespace process
35 {
36 const posix::Process& operator>>(const posix::Process& process, OomScore& score)
37 {
38  std::stringstream ss; ss << "/proc/" << process.pid() << "/oom_score";
39  std::ifstream in(ss.str());
40 
41  in >> score.value;
42 
43  return process;
44 }
45 }
46 }
47 }
48 }
49 }
The Process class models a process and possible operations on it.
Definition: process.h:44
CORE_POSIX_DLL_PUBLIC const posix::Process & operator>>(const posix::Process &process, OomAdj &adj)
Read the OomAdj value for a process instance.
Definition: oom_adj.cpp:55
virtual pid_t pid() const
Query the pid of the process.
Definition: process.cpp:59
int value
Current OomScore as calculated by the kernel.
Definition: oom_score.h:52