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# Copyright 1999-2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
from portage import os
getloadavg = getattr(os, "getloadavg", None)
if getloadavg is None:
def getloadavg():
"""
Uses /proc/loadavg to emulate os.getloadavg().
Raises OSError if the load average was unobtainable.
"""
try:
loadavg_str = open('/proc/loadavg').readline()
except IOError:
# getloadavg() is only supposed to raise OSError, so convert
raise OSError('unknown')
loadavg_split = loadavg_str.split()
if len(loadavg_split) < 3:
raise OSError('unknown')
loadavg_floats = []
for i in range(3):
try:
loadavg_floats.append(float(loadavg_split[i]))
except ValueError:
raise OSError('unknown')
return tuple(loadavg_floats)
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