tests/fakepatchtime.py

perf: support measuring bdiff for all changeset related data

The --all argument changes the behavior of `perfbdiff` to pull
in fulltext revision pairs for all changes related to a changeset.
The p1 and p2 manifests will be bdiffed against current. Every file
that changed between p1 and current will have its file revisions
loaded and bdiffed.

This mode of operation effectively measured the bdiff time required
for `hg commit`.

# extension to emulate invoking 'patch.internalpatch()' at the time
# specified by '[fakepatchtime] fakenow'

from __future__ import absolute_import

from mercurial import (
    extensions,
    patch as patchmod,
    util,
)

def internalpatch(orig, ui, repo, patchobj, strip,
                  prefix='', files=None,
                  eolmode='strict', similarity=0):
    if files is None:
        files = set()
    r = orig(ui, repo, patchobj, strip,
             prefix=prefix, files=files,
             eolmode=eolmode, similarity=similarity)

    fakenow = ui.config('fakepatchtime', 'fakenow')
    if fakenow:
        # parsing 'fakenow' in YYYYmmddHHMM format makes comparison between
        # 'fakenow' value and 'touch -t YYYYmmddHHMM' argument easy
        fakenow = util.parsedate(fakenow, ['%Y%m%d%H%M'])[0]
        for f in files:
            repo.wvfs.utime(f, (fakenow, fakenow))

    return r

def extsetup(ui):
    extensions.wrapfunction(patchmod, 'internalpatch', internalpatch)