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authorMattias Andrée <maandree@operamail.com>2014-06-12 22:18:12 +0200
committerMattias Andrée <maandree@operamail.com>2014-06-12 22:19:03 +0200
commitb132530fd8901e0b503855f8429c2c02b563b598 (patch)
tree7b670a30a6f3905e2b1c46cedac4d48cc75d5ec1 /src/plugins
parenttypo (diff)
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add cpuinfo with example
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/cpuinfo.py142
1 files changed, 142 insertions, 0 deletions
diff --git a/src/plugins/cpuinfo.py b/src/plugins/cpuinfo.py
new file mode 100644
index 0000000..d6cfc7d
--- /dev/null
+++ b/src/plugins/cpuinfo.py
@@ -0,0 +1,142 @@
+# -*- python -*-
+'''
+xpybar – xmobar replacement written in python
+Copyright © 2014 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
+