view contrib/memory.py @ 34938:aa05b95949fe stable

tests: adjust hooks for Windows

I'm not sure why these weren't working on Windows.  The failures were generally
in the style of:

  -  remote: phase-move: cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b:  1 -> 0
  +  remote: "phase-move: $HG_NODE:  $HG_OLDPHASE -> $HG_PHASE"

and

  -  abort: pretxnclose-bookmark.force-forward hook exited with status 1
  -  [255]
  +  abort: pretxnclose-bookmark.force-public hook exited with status 255
  +  [255]

These failures originated in ee5f0d047b41::f6d17075608f.

# 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)