117 lines
3.4 KiB
Python
117 lines
3.4 KiB
Python
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'''
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Module of Linux API for plyer.cpu.
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'''
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from os.path import join
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from os import environ, listdir
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from subprocess import Popen, PIPE
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from plyer.facades import CPU
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from plyer.utils import whereis_exe
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class LinuxCPU(CPU):
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'''
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Implementation of Linux CPU API.
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'''
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def _sockets(self):
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# physical CPU sockets (or slots) on motherboard
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sockets = [] # list of CPU ids from kernel
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# open Linux kernel data file for CPU
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with open('/proc/cpuinfo', 'rb') as fle:
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lines = fle.readlines()
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# go through the lines and obtain physical CPU ids
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for line in lines:
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line = line.decode('utf-8')
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if 'physical id' not in line:
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continue
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cpuid = line.split(':')[1].strip()
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sockets.append(cpuid)
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# total sockets is the length of unique CPU ids from kernel
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sockets = len(set(sockets))
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return sockets
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def _physical(self):
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# cores
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physical = [] # list of CPU ids from kernel
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# open Linux kernel data file for CPU
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with open('/proc/cpuinfo', 'rb') as fle:
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lines = fle.readlines()
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# go through the lines and obtain CPU core ids
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for line in lines:
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line = line.decode('utf-8')
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if 'core id' not in line:
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continue
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cpuid = line.split(':')[1].strip()
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physical.append(cpuid)
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# total cores (socket * core per socket)
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# is the length of unique CPU core ids from kernel
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physical = len(set(physical))
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return physical
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def _logical(self):
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# cores * threads
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logical = None
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old_lang = environ.get('LANG', '')
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environ['LANG'] = 'C'
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_logical = Popen(['nproc', '--all'], stdout=PIPE)
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output = _logical.communicate()[0].decode('utf-8').strip()
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if output:
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logical = int(output)
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environ['LANG'] = old_lang
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return logical
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def _cache(self):
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values = {key: 0 for key in ('L1', 'L2', 'L3')}
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cpu_path = join('/sys', 'devices', 'system', 'cpu')
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# get present cores from kernel device
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with open(join(cpu_path, 'present')) as fle:
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present = fle.read().decode('utf-8')
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present = present.strip().split('-')
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if len(present) == 2:
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present = range(int(present[1]) + 1)
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else:
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present = [present[0]]
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cores = ['cpu{}'.format(i) for i in present]
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for core in cores:
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indicies = [
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# get 'indexN' files from 'cache' folder assuming
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# the filename is in range index0 to index99
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# in case a wild 'index_whatevercontent' file appears
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fle for fle in listdir(join(cpu_path, core, 'cache'))
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if fle.startswith('index') and len(fle) <= len('index') + 2
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]
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for index in indicies:
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index_type = join(cpu_path, core, 'cache', index, 'level')
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with open(index_type, 'rb') as fle:
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cache_level = fle.read().decode('utf-8').strip()
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values['L{}'.format(cache_level)] += 1
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return values
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@staticmethod
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def _numa():
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return
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def instance():
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'''
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Instance for facade proxy.
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'''
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import sys
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if whereis_exe('nproc'):
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return LinuxCPU()
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sys.stderr.write("nproc not found.")
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return CPU()
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