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# -*- coding: utf-8 -*-
#
# This file is part of Glances.
#
# SPDX-FileCopyrightText: 2022 Nicolas Hennion <nicolas@nicolargo.com>
#
# SPDX-License-Identifier: LGPL-3.0-only
#
"""CPU core plugin."""
from glances.plugins.glances_plugin import GlancesPlugin
import psutil
# Fields description
# - phys: physical cores only (hyper thread CPUs are excluded)
# - log: logical CPUs in the system
fields_description = {
'phys': {'description': 'Number of physical cores (hyper thread CPUs are excluded).', 'unit': 'number'},
'log': {
'description': 'Number of logical CPUs. A logical CPU is the number of \
physical cores multiplied by the number of threads that can run on each core.',
'unit': 'number',
},
}
class Plugin(GlancesPlugin):
"""Glances CPU core plugin.
Get stats about CPU core number.
stats is integer (number of core)
"""
def __init__(self, args=None, config=None):
"""Init the plugin."""
super(Plugin, self).__init__(args=args, config=config, fields_description=fields_description)
# We dot not want to display the stat in the curse interface
# The core number is displayed by the load plugin
self.display_curse = False
# Do *NOT* uncomment the following line
# @GlancesPlugin._check_decorator
@GlancesPlugin._log_result_decorator
def update(self):
"""Update core stats.
Stats is a dict (with both physical and log cpu number) instead of a integer.
"""
# Init new stats
stats = self.get_init_value()
if self.input_method == 'local':
# Update stats using the standard system lib
# The psutil 2.0 include psutil.cpu_count() and psutil.cpu_count(logical=False)
# Return a dict with:
# - phys: physical cores only (hyper thread CPUs are excluded)
# - log: logical CPUs in the system
# Return None if undefined
try:
stats["phys"] = psutil.cpu_count(logical=False)
stats["log"] = psutil.cpu_count()
except NameError:
self.reset()
elif self.input_method == 'snmp':
# Update stats using SNMP
# http://stackoverflow.com/questions/5662467/how-to-find-out-the-number-of-cpus-using-snmp
pass
# Update the stats
self.stats = stats
return self.stats