| # Copyright 1999-2013 Gentoo Foundation |
| # Distributed under the terms of the GNU General Public License v2 |
| |
| from portage import os |
| import platform |
| |
| 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: |
| if platform.system() in ["AIX", "HP-UX"]: |
| loadavg_str = os.popen('LANG=C /usr/bin/uptime 2>/dev/null').readline().split() |
| while loadavg_str[0] != 'load' and loadavg_str[1] != 'average:': |
| loadavg_str = loadavg_str[1:] |
| loadavg_str = loadavg_str[2:5] |
| loadavg_str = [x.rstrip(',') for x in loadavg_str] |
| loadavg_str = ' '.join(loadavg_str) |
| else: |
| with open('/proc/loadavg') as f: |
| loadavg_str = f.readline() |
| except (IOError, IndexError): |
| # 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) |
