meminfo.py

# -*- encoding: utf-8 -*-

import sys

__all__ = ['proc_stat']

_pstat_parts = [
    ('pid', int),
    ('comm', str),
    ('state', str),
    ('ppid', int),
    ('pgrp', int),
    ('session', int),
    ('tty_nr', int),
    ('tpgid', int),
    ('flags', int),
    ('minflt', int),
    ('cminflt', int),
    ('majflt', int),
    ('cmajflt', int),
    ('utime', int),
    ('stime', int),
    ('cutime', int),
    ('cstime', int),
    ('priority', int),
    ('nice', int),
    ('num_threads', int),
    ('itrealvalue', int),
    ('starttime', int),
    ('vsize', int),
    ('rss', int),
    ('rsslim', int),
    ('startcode', int),
    ('endcode', int),
    ('startstack', int),
    ('kstkesp', int),
    ('kstkeip', int),
    ('signal', int),
    ('blocked', int),
    ('sigignore', int),
    ('sigcatch', int),
    ('wchan', int),
    ('nswap', int),
    ('cnswap', int),
    ('exit_signal', int),
    ('processor', int),
    ('rt_priority', int),
    ('policy', int),
    ('delayacct_blkio_ticks', int),
    ('guest_time', int),
    ('cguest_time', int),
]

if sys.platform == 'linux2':
    def proc_stat(pid=None):
        if pid is not None:
            path='/proc/%d/stat' % pid
        else:
            path='/proc/self/stat'
        line = open(path, 'r').read()
        line.strip()

        res = {}
        for i, elt in enumerate(line.split()):
            part = _pstat_parts[i]
            res[part[0]] = part[1](elt)

        return res
else:
    def proc_stat(pid=None):
        raise NotImplementedError("No implementation for this platform.")