upstream/mercurial-mirror Files · hgext/purge.py

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

Matt Harbison - - Load All Authors

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      # Copyright (C) 2006 - Marco Barisione <marco@barisione.org>

      #

      # This is a small extension for Mercurial (https://mercurial-scm.org/)

      # that removes files not known to mercurial

      #

      # This program was inspired by the "cvspurge" script contained in CVS

      # utilities (http://www.red-bean.com/cvsutils/).

      #

      # For help on the usage of "hg purge" use:

      #  hg help purge

      #

      # This program is free software; you can redistribute it and/or modify

      # it under the terms of the GNU General Public License as published by

      # the Free Software Foundation; either version 2 of the License, or

      # (at your option) any later version.

      #

      # This program is distributed in the hope that it will be useful,

      # but WITHOUT ANY WARRANTY; without even the implied warranty of

      # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

      # GNU General Public License for more details.

      #

      # You should have received a copy of the GNU General Public License

      # along with this program; if not, see <http://www.gnu.org/licenses/>.

      '''command to delete untracked files from the working directory (DEPRECATED)

      The functionality of this extension has been included in core Mercurial since

      version 5.7. Please use :hg:`purge ...` instead. :hg:`purge --confirm` is now

      the default, unless the extension is enabled for backward compatibility.

      '''

      # This empty extension looks pointless, but core mercurial checks if it's loaded

      # to implement the slightly different behavior documented above.

      # 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'

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				# Copyright (C) 2006 - Marco Barisione <marco@barisione.org>
				#
				# This is a small extension for Mercurial (https://mercurial-scm.org/)
				# that removes files not known to mercurial
				#
				# This program was inspired by the "cvspurge" script contained in CVS
				# utilities (http://www.red-bean.com/cvsutils/).
				#
				# For help on the usage of "hg purge" use:
				# hg help purge
				#
				# This program is free software; you can redistribute it and/or modify
				# it under the terms of the GNU General Public License as published by
				# the Free Software Foundation; either version 2 of the License, or
				# (at your option) any later version.
				#
				# This program is distributed in the hope that it will be useful,
				# but WITHOUT ANY WARRANTY; without even the implied warranty of
				# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
				# GNU General Public License for more details.
				#
				# You should have received a copy of the GNU General Public License
				# along with this program; if not, see <http://www.gnu.org/licenses/>.

				'''command to delete untracked files from the working directory (DEPRECATED)

				The functionality of this extension has been included in core Mercurial since
				version 5.7. Please use :hg:`purge ...` instead. :hg:`purge --confirm` is now
				the default, unless the extension is enabled for backward compatibility.
				'''

				# This empty extension looks pointless, but core mercurial checks if it's loaded
				# to implement the slightly different behavior documented above.

				# 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'