subrepo: print the status line before creating the peer for better diagnostics
I ran into a problem where I tried updating to a different branch, and the
process appeared to hang. It turned out that the subrepo revision wasn't
available locally, and I must have originally cloned it from an `hg serve -S` on
a machine that currently wasn't serving anything. It took 2+ minutes to
timeout, and didn't mention what it was connecting to even then.
There are a couple of other issues in this scenario too.
- The repo is dirty after the failed checkout because the top level repo is
updated first. We should probably make 2 passes- top down to pull
everything needed, and then do an update once everything is in place.
- Something must be reading .hgsubstate from wdir because if the same merge
command is run after the timeout, a prompt is issued that the local and
remote subrepo diverged, instead of hanging. But it lists the local version
and remote version as having the same hash.
# 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)