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

Optimize manifest.add...

Optimize manifest.add Testing shows that manifest.add is spending a significant percentage of its time running calcoffsets and doing text = "".join(addlist). This patch removes the need for both of these by storying the manifest in a character array, and using a modified bisect search to find lines without the help of a separate index of line offsets. manifest.add was also reworked to push delta construction/combination into the main loop. Time to apply 2751 patches (without psyco, ext3 noatime,data=writeback): Stock hg: 4m45s real 3m32s user 55s sys patched: 2m48s real 1m53s user 43s sys quilt: 2m30s real 45s user 50s sys (quilt does much more io...)

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      def demandload(scope, modules):

          class d:

              def __getattr__(self, name):

                  mod = self.__dict__["mod"]

                  scope = self.__dict__["scope"]

                  scope[mod] = __import__(mod, scope, scope, [])

                  return getattr(scope[mod], name)

          for m in modules.split():

              dl = d()

              dl.mod = m

              dl.scope = scope

              scope[m] = dl

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				def demandload(scope, modules):
				class d:
				def __getattr__(self, name):
				mod = self.__dict__["mod"]
				scope = self.__dict__["scope"]
				scope[mod] = __import__(mod, scope, scope, [])
				return getattr(scope[mod], name)

				for m in modules.split():
				dl = d()
				dl.mod = m
				dl.scope = scope
				scope[m] = dl