contrib/memory.py
author Olav Reinert <seroton10@gmail.com>
Wed, 11 Jan 2012 18:08:25 +0100
changeset 15861 ee8f5e4ce7b8
parent 10282 08a0f04b56bd
child 27795 3e0d27d298b7
permissions -rw-r--r--
minirst: simplify and standardize field list formatting The default width of field lists is changed from 12 to 14 to align minirst with the rst2html tool. Shrinking the width of the left column to fit the content is removed, to keep formatting simple and uniform.

# memory.py - track memory usage
#
# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

'''helper extension to measure memory usage

Reads current and peak memory usage from ``/proc/self/status`` and
prints it to ``stderr`` on exit.
'''

import atexit

def memusage(ui):
    """Report memory usage of the current process."""
    status = None
    result = {'peak': 0, 'rss': 0}
    try:
        # This will only work on systems with a /proc file system
        # (like Linux).
        status = open('/proc/self/status', 'r')
        for line in status:
            parts = line.split()
            key = parts[0][2:-1].lower()
            if key in result:
                result[key] = int(parts[1])
    finally:
        if status is not None:
            status.close()
    ui.write_err(", ".join(["%s: %.1f MiB" % (key, value / 1024.0)
                            for key, value in result.iteritems()]) + "\n")

def extsetup(ui):
    atexit.register(memusage, ui)