Mercurial > hg
view contrib/memory.py @ 44652:3cbbfd0bfc17
hook: move stdio redirection to context manager
The old code was checking stdio redirection in a loop.
This didn't make sense. The pattern is better expressed
as a context manager IMO, so this commit refactors it
to be one.
Differential Revision: https://phab.mercurial-scm.org/D8338
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 29 Mar 2020 11:58:50 -0700 |
parents | 2372284d9457 |
children | d4ba4d51f85f |
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# memory.py - track memory usage # # Copyright 2009 Matt Mackall <mpm@selenic.com> 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)