contrib/memory.py
author Gregory Szorc <gregory.szorc@gmail.com>
Wed, 23 Oct 2019 18:39:08 -0700
changeset 43514 10454e788111
parent 43076 2372284d9457
child 46819 d4ba4d51f85f
permissions -rw-r--r--
packaging: install and run Inno files in a build directory Upcoming commits will refactor the Windows installers so their content is dynamically derived. In preparation for this, we copy the Inno files into a new build directory and run them from there. This required changing some relative paths to work from a new directory level but is otherwise a pretty straightforward change. Differential Revision: https://phab.mercurial-scm.org/D7157

# 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)