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

revset: speedup matching() by first matching fields that take less time to...

revset: speedup matching() by first matching fields that take less time to match This patch sorts the fields that are passed to the matching function so that it always starts by matching those fields that take less time to match. Not all fields take the same amount of time to match. I've done several measurements running the following command: hg --time log -r "matching(1, field)" on the mercurial repository, and where 'field' was each one of the fields accepted by match. In order to avoid the print overhead (which could be different for different fields, given the different number of matches) I used a modified version of the matching() function which always returns no matches. These tests showed that different fields take wildly different amounts of time to match. Particulary the substate field takes up to 25 seconds to match on my machine, compared to the 0.3 seconds that takes to match the phase field or the 2 seconds (approx) that takes to match most fields. With this patch, matching both the phase and the substate of a revision takes the same amount of time as matching the phase. The field match order introduced by this patch is as follows: phase, parents, user, date, branch, summary, files, description, substate An extra nice thing about this patch is that it makes the match time stable.

FUJIWARA Katsunori - - Load All Authors

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      # Mercurial extension to provide the 'hg children' command

      #

      # Copyright 2007 by Intevation GmbH <intevation@intevation.de>

      #

      # Author(s):

      # Thomas Arendsen Hein <thomas@intevation.de>

      #

      # This software may be used and distributed according to the terms of the

      # GNU General Public License version 2 or any later version.

      '''command to display child changesets'''

      from mercurial import cmdutil

      from mercurial.commands import templateopts

      from mercurial.i18n import _

      def children(ui, repo, file_=None, **opts):

          """show the children of the given or working directory revision

          Print the children of the working directory's revisions. If a

          revision is given via -r/--rev, the children of that revision will

          be printed. If a file argument is given, revision in which the

          file was last changed (after the working directory revision or the

          argument to --rev if given) is printed.

          """

          rev = opts.get('rev')

          if file_:

              ctx = repo.filectx(file_, changeid=rev)

          else:

              ctx = repo[rev]

          displayer = cmdutil.show_changeset(ui, repo, opts)

          for cctx in ctx.children():

              displayer.show(cctx)

          displayer.close()

      cmdtable = {

          "children":

              (children,

               [('r', 'rev', '',

                 _('show children of the specified revision'), _('REV')),

               ] + templateopts,

               _('hg children [-r REV] [FILE]')),

      }

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				# Mercurial extension to provide the 'hg children' command
				#
				# Copyright 2007 by Intevation GmbH <intevation@intevation.de>
				#
				# Author(s):
				# Thomas Arendsen Hein <thomas@intevation.de>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				'''command to display child changesets'''

				from mercurial import cmdutil
				from mercurial.commands import templateopts
				from mercurial.i18n import _


				def children(ui, repo, file_=None, **opts):
				"""show the children of the given or working directory revision

				Print the children of the working directory's revisions. If a
				revision is given via -r/--rev, the children of that revision will
				be printed. If a file argument is given, revision in which the
				file was last changed (after the working directory revision or the
				argument to --rev if given) is printed.
				"""
				rev = opts.get('rev')
				if file_:
				ctx = repo.filectx(file_, changeid=rev)
				else:
				ctx = repo[rev]

				displayer = cmdutil.show_changeset(ui, repo, opts)
				for cctx in ctx.children():
				displayer.show(cctx)
				displayer.close()

				cmdtable = {
				"children":
				(children,
				[('r', 'rev', '',
				_('show children of the specified revision'), _('REV')),
				] + templateopts,
				_('hg children [-r REV] [FILE]')),
				}