upstream/mercurial-mirror Files · contrib/benchmarks/revset.py

revlog: efficient implementation of 'descendant'...

revlog: efficient implementation of 'descendant' Iterating over descendants is costly, because there are no "parent -> children" pointers. Walking the other way around is much more efficient, especially on large repositories, where descendant walks can cost seconds. And the other hand, common ancestors code follows links in the right direction and has a compiled implementation. In real life usage, this saved up to 80s during some pull operations, where descendant test happens in extension code.

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      # revset.py - asv revset benchmarks

      #

      # Copyright 2016 Logilab SA <contact@logilab.fr>

      #

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

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

      '''ASV revset benchmarks generated from contrib/base-revsets.txt

      Each revset benchmark is parameterized with variants (first, last, sort, ...)

      '''

      from __future__ import absolute_import

      import os

      import string

      import sys

      from . import basedir, perfbench

      def createrevsetbenchmark(baseset, variants=None):

          if variants is None:

              # Default variants

              variants = ["plain", "first", "last", "sort", "sort+first",

                          "sort+last"]

          fname = "track_" + "_".join("".join([

              c if c in string.digits + string.letters else " "

              for c in baseset

          ]).split())

          def wrap(fname, baseset):

              @perfbench(name=baseset, params=[("variant", variants)])

              def f(perf, variant):

                  revset = baseset

                  if variant != "plain":

                      for var in variant.split("+"):

                          revset = "%s(%s)" % (var, revset)

                  return perf("perfrevset", revset)

              f.__name__ = fname

              return f

          return wrap(fname, baseset)

      def initializerevsetbenchmarks():

          mod = sys.modules[__name__]

          with open(os.path.join(basedir, 'contrib', 'base-revsets.txt'),

                    'rb') as fh:

              for line in fh:

                  baseset = line.strip()

                  if baseset and not baseset.startswith('#'):

                      func = createrevsetbenchmark(baseset)

                      setattr(mod, func.__name__, func)

      initializerevsetbenchmarks()

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				# revset.py - asv revset benchmarks
				#
				# Copyright 2016 Logilab SA <contact@logilab.fr>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				'''ASV revset benchmarks generated from contrib/base-revsets.txt

				Each revset benchmark is parameterized with variants (first, last, sort, ...)
				'''

				from __future__ import absolute_import

				import os
				import string
				import sys

				from . import basedir, perfbench

				def createrevsetbenchmark(baseset, variants=None):
				if variants is None:
				# Default variants
				variants = ["plain", "first", "last", "sort", "sort+first",
				"sort+last"]
				fname = "track_" + "_".join("".join([
				c if c in string.digits + string.letters else " "
				for c in baseset
				]).split())

				def wrap(fname, baseset):
				@perfbench(name=baseset, params=[("variant", variants)])
				def f(perf, variant):
				revset = baseset
				if variant != "plain":
				for var in variant.split("+"):
				revset = "%s(%s)" % (var, revset)
				return perf("perfrevset", revset)
				f.__name__ = fname
				return f
				return wrap(fname, baseset)

				def initializerevsetbenchmarks():
				mod = sys.modules[__name__]
				with open(os.path.join(basedir, 'contrib', 'base-revsets.txt'),
				'rb') as fh:
				for line in fh:
				baseset = line.strip()
				if baseset and not baseset.startswith('#'):
				func = createrevsetbenchmark(baseset)
				setattr(mod, func.__name__, func)

				initializerevsetbenchmarks()