branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
# admin_commands.py - command processing for admin* commands
#
# Copyright 2022 Mercurial Developers
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from .i18n import _
from .admin import chainsaw, verify
from . import error, registrar, transaction
table = {}
table.update(chainsaw.command._table)
command = registrar.command(table)
@command(
b'admin::verify',
[
(b'c', b'check', [], _(b'add a check'), _(b'CHECK')),
(b'o', b'option', [], _(b'pass an option to a check'), _(b'OPTION')),
],
helpcategory=command.CATEGORY_MAINTENANCE,
)
def admin_verify(ui, repo, **opts):
"""verify the integrity of the repository
Alternative UI to `hg verify` with a lot more control over the
verification process and better error reporting.
"""
if not repo.url().startswith(b'file:'):
raise error.Abort(_(b"cannot verify bundle or remote repos"))
if transaction.has_abandoned_transaction(repo):
ui.warn(_(b"abandoned transaction found - run hg recover\n"))
checks = opts.get("check", [])
options = opts.get("option", [])
funcs = verify.get_checks(repo, ui, names=checks, options=options)
ui.status(_(b"running %d checks\n") % len(funcs))
# Done in two times so the execution is separated from the resolving step
for name, func in sorted(funcs.items(), key=lambda x: x[0]):
ui.status(_(b"running %s\n") % name)
errors = func()
if errors:
ui.warn(_(b"found %d errors\n") % len(errors))