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fix: reduce number of tool executions...
fix: reduce number of tool executions By grouping together (path, ctx) pairs according to the inputs they would provide to fixer tools, we can deduplicate executions of fixer tools to significantly reduce the amount of time spent running slow tools. This change does not handle clean files in the working copy, which could still be deduplicated against the files in the checked out commit. It's a little harder to do that because the filerev is not available in the workingfilectx (and it doesn't exist for added files). Anecdotally, this change makes some real uses cases at Google 10x faster. I think we were originally hesitant to do this because the benefits weren't obvious, and implementing it efficiently is kind of tricky. If we simply memoized the formatter execution function, we would be keeping tons of file content in memory. Also included is a regression test for a corner case that I broke with my first attempt at optimizing this code. Differential Revision: https://phab.mercurial-scm.org/D11280

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amend.py
74 lines | 2.2 KiB | text/x-python | PythonLexer
# amend.py - provide the amend command
#
# Copyright 2017 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""provide the amend command (EXPERIMENTAL)
This extension provides an ``amend`` command that is similar to
``commit --amend`` but does not prompt an editor.
"""
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
cmdutil,
commands,
registrar,
)
# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' for
# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
# be specifying the version(s) of Mercurial they are tested with, or
# leave the attribute unspecified.
testedwith = b'ships-with-hg-core'
cmdtable = {}
command = registrar.command(cmdtable)
@command(
b'amend',
[
(
b'A',
b'addremove',
None,
_(b'mark new/missing files as added/removed before committing'),
),
(b'e', b'edit', None, _(b'invoke editor on commit messages')),
(b'i', b'interactive', None, _(b'use interactive mode')),
(
b'',
b'close-branch',
None,
_(b'mark a branch as closed, hiding it from the branch list'),
),
(b's', b'secret', None, _(b'use the secret phase for committing')),
(b'n', b'note', b'', _(b'store a note on the amend')),
]
+ cmdutil.walkopts
+ cmdutil.commitopts
+ cmdutil.commitopts2
+ cmdutil.commitopts3,
_(b'[OPTION]... [FILE]...'),
helpcategory=command.CATEGORY_COMMITTING,
inferrepo=True,
)
def amend(ui, repo, *pats, **opts):
"""amend the working copy parent with all or specified outstanding changes
Similar to :hg:`commit --amend`, but reuse the commit message without
invoking editor, unless ``--edit`` was set.
See :hg:`help commit` for more details.
"""
cmdutil.check_note_size(opts)
with repo.wlock(), repo.lock():
if not opts.get('logfile'):
opts['message'] = opts.get('message') or repo[b'.'].description()
opts['amend'] = True
return commands._docommit(ui, repo, *pats, **opts)