annotate contrib/memory.py @ 39346:d0dfdf263a20

zsh_completion: adjust usage of common options

addremove, remove and serve accept -S/--subrepos, and purge actually doesn't.

qnew accepts -I/--include and -X/--exclude.

qrefresh accepts -D/--currentdate, -U/--currentuser, -d/--date and -u/--user.

rebase accepts -n/--dry-run.

Differential Revision: https://phab.mercurial-scm.org/D4360

# memory.py - track memory usage
#
# Copyright 2009 Matt 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)