/usr/lib/python2.7/dist-packages/linkcheck/mem.py is in linkchecker 9.3-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright: Jean Brouwers
# License:
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
"""
Copied from the Python Cookbook recipe at
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/286222
To find the memory usage in a particular section of code these
functions are typically used as follows::
m0 = memory()
...
m1 = memory(m0)
"""
import os
_proc_status = '/proc/%d/status' % os.getpid()
_scale = {'kB': 1024.0, 'mB': 1024.0*1024.0,
'KB': 1024.0, 'MB': 1024.0*1024.0}
def _VmB (VmKey):
"""Parse /proc/<pid>/status file for given key.
@return: requested number value of status entry
@rtype: float
"""
if os.name != 'posix':
# not supported
return 0.0
global _proc_status, _scale
# get pseudo file /proc/<pid>/status
try:
t = open(_proc_status)
v = t.read()
t.close()
except IOError:
# unsupported platform (non-Linux?)
return 0.0
# get VmKey line e.g. 'VmRSS: 9999 kB\n ...'
i = v.index(VmKey)
v = v[i:].split(None, 3) # whitespace
if len(v) < 3:
return 0.0 # invalid format?
# convert Vm value to bytes
return float(v[1]) * _scale[v[2]]
def memory (since=0.0):
"""Get memory usage.
@return: memory usage in bytes
@rtype: float
"""
return _VmB('VmSize:') - since
def resident (since=0.0):
"""Get resident memory usage.
@return: resident memory usage in bytes
@rtype: float
"""
return _VmB('VmRSS:') - since
def stacksize (since=0.0):
"""Get stack size.
@return: stack size in bytes
@rtype: float
"""
return _VmB('VmStk:') - since
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