process-cpp: /build/process-cpp/src/process-cpp-3.0.1/src/core/posix/linux/proc/process/oom_score.cpp Source File

process-cpp 3.0.0 A simple convenience library for handling processes in C++11.

oom_score.cpp
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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
19 #include <core/posix/linux/proc/process/oom_score.h>
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 }
core::posix::linux::proc::process::OomScore::value
int value
Current OomScore as calculated by the kernel.
Definition: oom_score.h:52
core::posix::linux::proc::process::OomScore
Definition: oom_score.h:51
process.h
core
Definition: child_process.h:32
core::posix::Process::pid
virtual pid_t pid() const
Query the pid of the process.
Definition: process.cpp:59
core::posix::linux::proc::process::operator>>
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
oom_score.h
core::posix::Process
The Process class models a process and possible operations on it.
Definition: process.h:45