view contrib/memory.py @ 48217:e10f5dc7f5bf

pyoxidizer: add the user site to `sys.path` on macOS

This allows 3rd party extensions that are installed with `pip` to be picked up,
similar to what we do on Windows.  PyOxidizer has a bug that prevents this from
working without this extra help (see 95af358fcdfe), though it appears there's
another wrinkle here with `sys._framework` too.

I needed this to see if the problem[1] loading the keyring extension on Windows
also occurs on macOS (it doesn't).

[1] https://github.com/indygreg/PyOxidizer/issues/445

Differential Revision: https://phab.mercurial-scm.org/D11452

# memory.py - track memory usage
#
# Copyright 2009 Olivia Mackall <[e-mail]> 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)