contrib/memory.py
author Augie Fackler <augie@google.com>
Sun, 06 Oct 2019 09:45:02 -0400
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child 46819 d4ba4d51f85f
permissions -rw-r--r--
formatting: blacken the codebase This is using my patch to black (https://github.com/psf/black/pull/826) so we don't un-wrap collection literals. Done with: hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S # skip-blame mass-reformatting only # no-check-commit reformats foo_bar functions Differential Revision: https://phab.mercurial-scm.org/D6971
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# memory.py - track memory usage
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#
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# Copyright 2009 Matt Mackall <mpm@selenic.com> and others
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''helper extension to measure memory usage
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Reads current and peak memory usage from ``/proc/self/status`` and
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prints it to ``stderr`` on exit.
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'''
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from __future__ import absolute_import
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def memusage(ui):
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    """Report memory usage of the current process."""
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    result = {'peak': 0, 'rss': 0}
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    with open('/proc/self/status', 'r') as status:
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        # This will only work on systems with a /proc file system
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        # (like Linux).
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        for line in status:
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            parts = line.split()
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            key = parts[0][2:-1].lower()
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            if key in result:
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                result[key] = int(parts[1])
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    ui.write_err(
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        ", ".join(
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            ["%s: %.1f MiB" % (k, v / 1024.0) for k, v in result.iteritems()]
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        )
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        + "\n"
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    )
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def extsetup(ui):
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    ui.atexit(memusage, ui)