sparse-revlog: introduce native (C) implementation of slicechunktodensity
This is a C implementation of `_slicechunktodensity` in the
`mercurial/revlogutils/deltas.py` file.
The algorithm involves a lot of integer manipulation and low-level access to
index data. Having a C implementation of it raises a large performance
improvement. See later changeset in this series for details.
# Extension to write out fake unsupported records into the merge state
#
#
from __future__ import absolute_import
from mercurial import (
merge,
registrar,
)
cmdtable = {}
command = registrar.command(cmdtable)
@command(b'fakemergerecord',
[(b'X', b'mandatory', None, b'add a fake mandatory record'),
(b'x', b'advisory', None, b'add a fake advisory record')], '')
def fakemergerecord(ui, repo, *pats, **opts):
with repo.wlock():
ms = merge.mergestate.read(repo)
records = ms._makerecords()
if opts.get('mandatory'):
records.append((b'X', b'mandatory record'))
if opts.get('advisory'):
records.append((b'x', b'advisory record'))
ms._writerecords(records)