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

bdiff: improve worst case behavior by 100x....

bdiff: improve worst case behavior by 100x. on 5.8MB (244.000 lines) text file with similar lines, hash before this change made diff against empty file take 75 seconds. this change improves performance to 0.6 seconds. result is that clone of smallish repo (137MB) with some files like this takes 1 minute instead of 10 minutes. common case of diff is 10% slower now, probably because of worse cache locality. but diff does not affect overall performance in common case (less than 1% of runtime is in diff when it is working ok), so this tradeoff looks good.

Vadim Gelfer - - Load All Authors

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      # remoterepo - remote repositort proxy classes for mercurial

      #

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

      #

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

      # of the GNU General Public License, incorporated herein by reference.

      class remoterepository(object):

          def dev(self):

              return -1

          def local(self):

              return False

      class remotelock(object):

          def __init__(self, repo):

              self.repo = repo

          def release(self):

              self.repo.unlock()

              self.repo = None

          def __del__(self):

              if self.repo:

                  self.release()

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				# remoterepo - remote repositort proxy classes for mercurial
				#
				# Copyright 2005 Matt Mackall <mpm@selenic.com>
				#
				# This software may be used and distributed according to the terms
				# of the GNU General Public License, incorporated herein by reference.

				class remoterepository(object):
				def dev(self):
				return -1

				def local(self):
				return False

				class remotelock(object):
				def __init__(self, repo):
				self.repo = repo
				def release(self):
				self.repo.unlock()
				self.repo = None
				def __del__(self):
				if self.repo:
				self.release()