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annotate contrib/memory.py @ 12866:eddc20306ab6 stable

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encoding: default ambiguous character to narrow The current implementation of colwidth was treating 'A'mbiguous characters as wide, which was incorrect in a non-East Asian context. As per http://unicode.org/reports/tr11/#Recommendations, we should instead default to 'narrow' if we don't know better. As character width is dependent on the particular font used and we have no idea what fonts are in use, this recommendation applies. This introduces HGENCODINGAMBIGUOUS to get the old behavior back.
author Matt Mackall <mpm@selenic.com>
date Wed, 27 Oct 2010 15:35:21 -0500
parents 08a0f04b56bd
children 3e0d27d298b7
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1 # memory.py - track memory usage
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2 #
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3 # Copyright 2009 Matt Mackall <mpm@selenic.com> and others
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 '''helper extension to measure memory usage
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9
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10 Reads current and peak memory usage from ``/proc/self/status`` and
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11 prints it to ``stderr`` on exit.
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12 '''
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13
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14 import atexit
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15
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16 def memusage(ui):
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17 """Report memory usage of the current process."""
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18 status = None
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19 result = {'peak': 0, 'rss': 0}
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20 try:
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21 # This will only work on systems with a /proc file system
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22 # (like Linux).
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23 status = open('/proc/self/status', 'r')
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24 for line in status:
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25 parts = line.split()
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26 key = parts[0][2:-1].lower()
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27 if key in result:
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28 result[key] = int(parts[1])
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29 finally:
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30 if status is not None:
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31 status.close()
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32 ui.write_err(", ".join(["%s: %.1f MiB" % (key, value / 1024.0)
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33 for key, value in result.iteritems()]) + "\n")
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34
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35 def extsetup(ui):
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36 atexit.register(memusage, ui)