65 lines
2.3 KiB
Python
65 lines
2.3 KiB
Python
# pylint: disable=C0111,R0903
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'''Displays available RAM, total amount of RAM and percentage available.
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Parameters:
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* memory.warning : Warning threshold in % of memory used (defaults to 80%)
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* memory.critical: Critical threshold in % of memory used (defaults to 90%)
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* memory.format: Format string (defaults to '{used}/{total} ({percent:05.02f}%)')
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* memory.usedonly: Only show the amount of RAM in use (defaults to False). Same as memory.format='{used}'
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'''
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import re
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import core.module
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import core.widget
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import core.input
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import util.format
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class Module(core.module.Module):
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def __init__(self, config=None):
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super().__init__(config, core.widget.Widget(self.memory_usage))
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core.input.register(self, button=core.input.LEFT_MOUSE,
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cmd='gnome-system-monitor')
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@property
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def _format(self):
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if util.format.asbool(self.parameter('usedonly', False)):
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return '{used}'
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else:
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return self.parameter('format', '{used}/{total} ({percent:05.02f}%)')
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def memory_usage(self, widget):
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return self._format.format(**self._mem)
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def update(self):
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data = {}
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with open('/proc/meminfo', 'r') as f:
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for line in f:
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tmp = re.split(r'[:\s]+', line)
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value = int(tmp[1])
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if tmp[2] == 'kB': value = value*1024
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if tmp[2] == 'mB': value = value*1024*1024
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if tmp[2] == 'gB': value = value*1024*1024*1024
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data[tmp[0]] = value
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if 'MemAvailable' in data:
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used = data['MemTotal'] - data['MemAvailable']
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else:
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used = data['MemTotal'] - data['MemFree'] - data['Buffers'] - data['Cached'] - data['Slab']
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self._mem = {
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'total': util.format.byte(data['MemTotal']),
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'available': util.format.byte(data['MemAvailable']),
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'free': util.format.byte(data['MemFree']),
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'used': util.format.byte(used),
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'percent': float(used)/float(data['MemTotal'])*100.0
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}
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def state(self, widget):
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if self._mem['percent'] > float(self.parameter('critical', 90)):
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return 'critical'
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if self._mem['percent'] > float(self.parameter('warning', 80)):
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return 'warning'
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return None
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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