upgraderepo: add a config option for parallel computation
The option is put to use to compute new copy tracing side data in parallel. It
use the multiprocessing module as it had the appropriate primitive for what we
needed. Gregory Szorc had concerned on windows so we disabled it there.
See inline comment for details on the parallel implementation.
# 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)