upstream/mercurial-mirror Files · mercurial/node.py

smartset: convert set to list lazily...

smartset: convert set to list lazily If the caller only wants to construct a baseset via a set, and then do "__contains__" tests. It's unnecessary to initialize the list. Testing on my unfiltered hg-committed repo where len(draft()) is 2600, this patch shows about 6% improvement on set intensive queries: Before: $ for i in `seq 5`; hg perfrevset 'draft() & draft() & draft() & draft()' ! wall 0.001196 comb 0.000000 user 0.000000 sys 0.000000 (best of 2011) ! wall 0.001191 comb 0.000000 user 0.000000 sys 0.000000 (best of 2099) ! wall 0.001186 comb 0.010000 user 0.010000 sys 0.000000 (best of 1953) ! wall 0.001182 comb 0.000000 user 0.000000 sys 0.000000 (best of 2135) ! wall 0.001193 comb 0.000000 user 0.000000 sys 0.000000 (best of 2177) After: $ for i in `seq 5`; hg perfrevset 'draft() & draft() & draft() & draft()' ! wall 0.001128 comb 0.000000 user 0.000000 sys 0.000000 (best of 2247) ! wall 0.001119 comb 0.000000 user 0.000000 sys 0.000000 (best of 2317) ! wall 0.001115 comb 0.000000 user 0.000000 sys 0.000000 (best of 2244) ! wall 0.001131 comb 0.000000 user 0.000000 sys 0.000000 (best of 2093) ! wall 0.001124 comb 0.000000 user 0.000000 sys 0.000000 (best of 2134) It could have bigger impact on larger sets in theory.

Durham Goode - - Load All Authors

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      # node.py - basic nodeid manipulation for mercurial

      #

      # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>

      #

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

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

      from __future__ import absolute_import

      import binascii

      # This ugly style has a noticeable effect in manifest parsing

      hex = binascii.hexlify

      bin = binascii.unhexlify

      nullrev = -1

      nullid = b"\0" * 20

      nullhex = hex(nullid)

      # Phony node value to stand-in for new files in some uses of

      # manifests.

      newnodeid = '!' * 20

      addednodeid = ('0' * 15) + 'added'

      modifiednodeid = ('0' * 12) + 'modified'

      wdirnodes = set((newnodeid, addednodeid, modifiednodeid))

      # pseudo identifiers for working directory

      # (they are experimental, so don't add too many dependencies on them)

      wdirrev = 0x7fffffff

      wdirid = b"\xff" * 20

      def short(node):

          return hex(node[:6])

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				# node.py - basic nodeid manipulation for mercurial
				#
				# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
				#
				# This software may be used and distributed according to the terms of the
				# GNU General Public License version 2 or any later version.

				from __future__ import absolute_import

				import binascii

				# This ugly style has a noticeable effect in manifest parsing
				hex = binascii.hexlify
				bin = binascii.unhexlify

				nullrev = -1
				nullid = b"\0" * 20
				nullhex = hex(nullid)

				# Phony node value to stand-in for new files in some uses of
				# manifests.
				newnodeid = '!' * 20
				addednodeid = ('0' * 15) + 'added'
				modifiednodeid = ('0' * 12) + 'modified'

				wdirnodes = set((newnodeid, addednodeid, modifiednodeid))

				# pseudo identifiers for working directory
				# (they are experimental, so don't add too many dependencies on them)
				wdirrev = 0x7fffffff
				wdirid = b"\xff" * 20

				def short(node):
				return hex(node[:6])