contrib/memory.py
author Ryan McElroy <rmcelroy@fb.com>
Wed, 15 Apr 2015 09:07:54 -0700
changeset 25387 390a10b7843b
parent 10282 08a0f04b56bd
child 27795 3e0d27d298b7
permissions -rw-r--r--
templatekw: display active bookmark more consistently (issue4552) (BC) Previously, the template keyword '{activebookmark}' would only display the active bookmark if it was also pointing to the working directory's parent. Meanwhile, the '{active}' subkeyword of the '{bookmarks}' keyword displays the active bookmark regardless of whether it also points to the working directory's parent. This is confusing. Consider the output of these two templates: $ hg log -T '{activebookmark}\n' -r indent $ hg log -T '{bookmarks % "{bookmark}"}\n' -r indent indent This is the current behavior that can arise after, eg, a pull moves a bookmark out from under you. After this patch, the first template will also return the active bookmark that points to a revision, even if it is not the current parent of the working directory. A test has been added to show the new behavior.

# 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.
'''

import atexit

def memusage(ui):
    """Report memory usage of the current process."""
    status = None
    result = {'peak': 0, 'rss': 0}
    try:
        # This will only work on systems with a /proc file system
        # (like Linux).
        status = open('/proc/self/status', 'r')
        for line in status:
            parts = line.split()
            key = parts[0][2:-1].lower()
            if key in result:
                result[key] = int(parts[1])
    finally:
        if status is not None:
            status.close()
    ui.write_err(", ".join(["%s: %.1f MiB" % (key, value / 1024.0)
                            for key, value in result.iteritems()]) + "\n")

def extsetup(ui):
    atexit.register(memusage, ui)