contrib/memory.py
author Pierre-Yves David <pierre-yves.david@octobus.net>
Fri, 19 Feb 2021 18:57:09 +0100
changeset 46600 0ebfd02dafd5
parent 43076 2372284d9457
child 46819 d4ba4d51f85f
permissions -rw-r--r--
test-copies: move the new files in the `i` branch The initial branch is moving some of the "same content" file around. We do the same for the "different content" before start to implement more tests. The new files have harmless impact of various existing tests. Differential Revision: https://phab.mercurial-scm.org/D10054

# 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)