mirror of
https://github.com/HorlogeSkynet/archey4
synced 2024-11-24 16:00:09 +01:00
36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
"""Simple class (acting as a singleton) to handle processes listing"""
|
|
|
|
import logging
|
|
from subprocess import PIPE, CalledProcessError, check_output
|
|
|
|
from archey.singleton import Singleton
|
|
|
|
|
|
class Processes(metaclass=Singleton):
|
|
"""At startup, instantiate this class to populate a list of running processes"""
|
|
|
|
def __init__(self):
|
|
try:
|
|
ps_output = check_output(["ps", "-eo", "comm"], stderr=PIPE, universal_newlines=True)
|
|
except FileNotFoundError:
|
|
self._processes = []
|
|
logging.warning("`procps` (or `procps-ng`) couldn't be found on your system.")
|
|
except CalledProcessError as process_error:
|
|
self._processes = []
|
|
logging.warning(
|
|
"This implementation of `ps` might not be supported : %s", process_error.stderr
|
|
)
|
|
else:
|
|
# Discard first heading line here.
|
|
self._processes = ps_output.splitlines()[1:]
|
|
|
|
@property
|
|
def list(self) -> tuple:
|
|
"""Simple getter to retrieve (am immutable copy of) the processes list"""
|
|
return tuple(self._processes)
|
|
|
|
@property
|
|
def number(self) -> int:
|
|
"""Simple getter to retrieve the number of stored processes"""
|
|
return len(self._processes)
|