contrib/memory.py
author Pulkit Goyal <7895pulkit@gmail.com>
Mon, 03 Aug 2020 18:08:37 +0530
changeset 45340 cdc50e1929b0
parent 43076 2372284d9457
child 46819 d4ba4d51f85f
permissions -rw-r--r--
mergeresult: yield from getactions() instead of buidling a list and returning Only 7 out of 29 callers change the underlying dict while iterating. So it's better to yield and wrap the 7 callers with `list()`. Differential Revision: https://phab.mercurial-scm.org/D8882

# 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.
'''

from __future__ import absolute_import


def memusage(ui):
    """Report memory usage of the current process."""
    result = {'peak': 0, 'rss': 0}
    with open('/proc/self/status', 'r') as status:
        # This will only work on systems with a /proc file system
        # (like Linux).
        for line in status:
            parts = line.split()
            key = parts[0][2:-1].lower()
            if key in result:
                result[key] = int(parts[1])
    ui.write_err(
        ", ".join(
            ["%s: %.1f MiB" % (k, v / 1024.0) for k, v in result.iteritems()]
        )
        + "\n"
    )


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