psutil 5.4.0

Process and system monitoring library
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128

use std::collections::HashMap;

use crate::process::os::linux::{
	procfs_stat, procfs_statm, procfs_status, ProcfsStat, ProcfsStatm, ProcfsStatus,
};
use crate::process::{psutil_error_to_process_error, Process, ProcessResult};
use crate::{read_file, Error, Result};

fn parse_environ(contents: &str) -> Result<HashMap<String, String>> {
	contents
		.split_terminator('\0')
		.map(|mapping| {
			let split = match mapping.splitn(2, '=').collect::<Vec<_>>() {
				split if split.len() == 2 => Ok(split),
				_ => Err(Error::MissingData {
					path: "environ".into(),
					contents: contents.to_string(),
				}),
			}?;

			Ok((split[0].to_owned(), split[1].to_owned()))
		})
		.collect()
}

pub struct IoCounters {}

pub trait ProcessExt {
	fn environ(&self) -> ProcessResult<HashMap<String, String>>;

	fn get_ionice(&self) -> i32;

	fn set_ionice(&self, nice: i32);

	fn get_rlimit(&self) -> i32;

	fn set_rlimit(&self, nice: i32);

	fn io_counters(&self) -> IoCounters;

	fn get_cpu_affinity(&self) -> i32;

	fn set_cpu_affinity(&self, nice: i32);

	fn cpu_num(&self) -> i32;

	fn memory_maps(&self);

	/// New method, not in Python psutil
	fn procfs_stat(&self) -> ProcessResult<ProcfsStat>;

	/// New method, not in Python psutil
	fn procfs_statm(&self) -> ProcessResult<ProcfsStatm>;

	/// New method, not in Python psutil
	fn procfs_status(&self) -> ProcessResult<ProcfsStatus>;
}

impl ProcessExt for Process {
	fn environ(&self) -> ProcessResult<HashMap<String, String>> {
		let contents = read_file(self.procfs_path("environ"))
			.map_err(|e| psutil_error_to_process_error(e, self.pid))?;

		parse_environ(&contents).map_err(|e| psutil_error_to_process_error(e, self.pid))
	}

	fn get_ionice(&self) -> i32 {
		todo!()
	}

	fn set_ionice(&self, _nice: i32) {
		todo!()
	}

	fn get_rlimit(&self) -> i32 {
		todo!()
	}

	fn set_rlimit(&self, _nice: i32) {
		todo!()
	}

	fn io_counters(&self) -> IoCounters {
		todo!()
	}

	fn get_cpu_affinity(&self) -> i32 {
		todo!()
	}

	fn set_cpu_affinity(&self, _nice: i32) {
		todo!()
	}

	fn cpu_num(&self) -> i32 {
		todo!()
	}

	fn memory_maps(&self) {
		todo!()
	}

	fn procfs_stat(&self) -> ProcessResult<ProcfsStat> {
		procfs_stat(self.pid)
	}

	fn procfs_statm(&self) -> ProcessResult<ProcfsStatm> {
		procfs_statm(self.pid)
	}

	fn procfs_status(&self) -> ProcessResult<ProcfsStatus> {
		procfs_status(self.pid)
	}
}

#[cfg(test)]
mod unit_tests {
	use super::*;

	#[test]
	fn test_parse_environ() {
		let data = "HOME=/\0init=/sbin/init\0recovery=\0TERM=linux\0BOOT_IMAGE=/boot/vmlinuz-3.13.0-128-generic\0PATH=/sbin:/usr/sbin:/bin:/usr/bin\0PWD=/\0rootmnt=/root\0";
		let env = parse_environ(data).unwrap();
		assert_eq!(env["HOME"], "/");
		assert_eq!(env["rootmnt"], "/root");
		assert_eq!(env["recovery"], "");
	}
}