procfs_core/process/
schedstat.rs

1use crate::from_iter;
2use crate::ProcResult;
3use std::io::Read;
4
5#[cfg(feature = "serde1")]
6use serde::{Deserialize, Serialize};
7
8/// Provides scheduler statistics of the process, based on the `/proc/<pid>/schedstat` file.
9#[derive(Debug, Clone)]
10#[cfg_attr(feature = "serde1", derive(Serialize, Deserialize))]
11pub struct Schedstat {
12    /// Time spent on the cpu.
13    ///
14    /// Measured in nanoseconds.
15    pub sum_exec_runtime: u64,
16    /// Time spent waiting on a runqueue.
17    ///
18    /// Measured in nanoseconds.
19    pub run_delay: u64,
20    /// \# of timeslices run on this cpu.
21    pub pcount: u64,
22}
23
24impl crate::FromRead for Schedstat {
25    fn from_read<R: Read>(mut r: R) -> ProcResult<Self> {
26        let mut line = String::new();
27        r.read_to_string(&mut line)?;
28        let mut s = line.split_whitespace();
29
30        let schedstat = Schedstat {
31            sum_exec_runtime: expect!(from_iter(&mut s)),
32            run_delay: expect!(from_iter(&mut s)),
33            pcount: expect!(from_iter(&mut s)),
34        };
35
36        if cfg!(test) {
37            assert!(s.next().is_none());
38        }
39
40        Ok(schedstat)
41    }
42}
procfs_core/process/schedstat.rs

procfs_core/process/
schedstat.rs
