view contrib/memory.py @ 17046:4116504d1ec4 stable

bookmarks: correctly update current bookmarks on rebase (issue2277)

When you rebased with a currently active bookmark, that bookmark would
always point at the new tip, regardless of what revision it pointed at
before the rebase.

All bookmarks will now point at the equivalent post-rebase commit.
However, the currently active bookmark will cease to be active unless
it points at the new tip post-rebase.  Rebase will always leave the
new tip as the working copy parent, which is incompatible with having
an active bookmark that points at some other revision.  The common
case should be that the active bookmark will point at the new tip
post-rebase.

# 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.
'''

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)