# -*- python -*-
'''
xpybar – xmobar replacement written in python
Copyright © 2014, 2015 Mattias Andrée (maandree@member.fsf.org)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
'''
class CPUInfo: # TODO enable setting scaling
'''
Data from /proc/cpuinfo and /sys/devices/system/cpu
@variable cpus:list<dict<str, str>> Information about each CPU
'''
BIOS_FREQUENCY_LIMIT = 'cpufreq/bios_limit'
'''
CPU frequency limit per BIOS, in kHz
@mapping int
'''
SCALING_GOVERNOR = 'cpufreq/scaling_governor'
'''
CPU frequency scaling governor
@mapping str
'''
CPU_TRANSITION_LATENCY = 'cpufreq/cpuinfo_transition_latency'
'''
CPU transition latency, in ns
@mapping int
'''
AVAILABLE_FREQUENCIES = 'cpufreq/scaling_available_frequencies'
'''
Available CPU scaling frequencies, in kHz
@mapping itr<int>
'''
SCALING_DRIVER = 'cpufreq/scaling_driver'
'''
CPU frequency scaling driver
@mapping str
'''
AVAILABLE_SCALING_GOVERNORS = 'cpufreq/scaling_available_governors'
'''
Available CPU frequency scaling governor
@mapping itr<str>
'''
CURRENT_FREQUENCY = 'cpufreq/cpuinfo_cur_freq'
MINIMUM_FREQUENCY = 'cpufreq/cpuinfo_min_freq'
MAXIMUM_FREQUENCY = 'cpufreq/cpuinfo_max_freq'
CURRENT_SCALING_FREQUENCY = 'cpufreq/scaling_cur_freq'
MINIMUM_SCALING_FREQUENCY = 'cpufreq/scaling_min_freq'
MAXIMUM_SCALING_FREQUENCY = 'cpufreq/scaling_max_freq'
# TODO more CPU info
#'cpufreq/affected_cpus'
#'cpufreq/related_cpus'
#'cpufreq/scaling_setspeed'
#cache/
#power/
#topology/
#thermal_throttle
#/sys/devices/system/cpu/cpufreq/
#/sys/devices/system/cpu/cpuidle/
#/sys/devices/system/cpu/power/
def __init__(self):
'''
Constructor
'''
cpuinfo = None
with open('/proc/cpuinfo', 'rb') as file:
cpuinfo = file.read()
cpuinfo = cpuinfo.decode('utf-8', 'replace').replace('\t', '')
cpuinfo = filter(lambda cpu : not cpu == '', cpuinfo.split('\n\n'))
def f(line):
cols = line.split(': ')
key, value = cols[0].replace('_', ' '), ': '.join(cols[1:])
return (key, value)
self.cpus = [dict(f(line) for line in cpu.split('\n') if ': ' in line) for cpu in cpuinfo]
def __contains__(self, key):
'''
Get whether or not a key is available for any CPU
@param key:str The key
@return :bool The availability
'''
return any(map(key in self.cpus, self.cpus))
def __getitem__(self, key):
'''
Look up a field from '/proc/cpuinfo' for each CPU
@param key:str The key
@return :list<str?> The value associated with the key for each CPU, `None` where missing
'''
return [cpu[key] if key in cpu else None for cpu in self.cpus]
def get(self, cpu, data):
'''
Read a information from sysfs for a CPU
@param cpu:int The index of the CPU
@param data:str The file inside the CPU's directory
@return :str The content of the file
'''
if data == CPUInfo.CURRENT_FREQUENCY:
return str(int(float(self['cpu MHz'][cpu]) * 1000))
path = '/sys/devices/system/cpu/cpu%i/%s' % (cpu, data)
with open(path, 'rb') as file:
cont = file.read().decode('utf-8', 'replace').rstrip('\n')
return cont
