contrib/benchmarks/perf.py

context: avoid using a context object as a changeid

I find it misleading to pass changeid=changectx. It currently works to
do that because there's weird (IMO) handling of it in
basectx.__new__. I'm planning on removing that code. Passing changeid
as "changeid" and context as "context" makes it more readable.

Note that the documentation of filectx.__init__ doesn't even seem to
be aware that a changeid can be a context ("changeset revision, node,
or tag").

Differential Revision: https://phab.mercurial-scm.org/D2967

# perf.py - asv benchmarks using contrib/perf.py extension
#
# Copyright 2016 Logilab SA <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import

from . import perfbench

@perfbench()
def track_tags(perf):
    return perf("perftags")

@perfbench()
def track_status(perf):
    return perf("perfstatus", unknown=False)

@perfbench(params=[('rev', ['1000', '10000', 'tip'])])
def track_manifest(perf, rev):
    return perf("perfmanifest", rev)

@perfbench()
def track_heads(perf):
    return perf("perfheads")