upstream/mercurial-mirror Files · tests/lockdelay.py

revset: lookup descendents for negative arguments to ancestor operator...

revset: lookup descendents for negative arguments to ancestor operator Negative offsets to the `~` operator now search for descendents. The search is aborted when a node has more than one child as we do not have a definition for 'nth child'. Optionally we can introduce such a notion and take the nth child ordered by rev number. The current revset language does provides a short operator for ancestor lookup but not for descendents. This gives user a simple revset to move to the previous changeset, e.g. `hg up '.~1'` but not to the 'next' changeset. With this change userse can now use `.~-1` as a shortcut to move to the next changeset. This fits better into allowing users to specify revisions via revsets and avoiding the need for special `hg next` and `hg prev` operations. The alternative to negative offsets is adding a new operator. We do not have many operators in ascii left that do not require bash escaping (',', '_', and '/' come to mind). If we decide that we should add a more convenient short operator such as ('/', e.g. './1') we can later add it and allow ascendents lookup via negative numbers.

Pierre-Yves David - - Load All Authors

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      # Dummy extension that adds a delay after acquiring a lock.

      #

      # This extension can be used to test race conditions between lock acquisition.

      from __future__ import absolute_import

      import os

      import time

      def reposetup(ui, repo):

          class delayedlockrepo(repo.__class__):

              def lock(self):

                  delay = float(os.environ.get('HGPRELOCKDELAY', '0.0'))

                  if delay:

                      time.sleep(delay)

                  res = super(delayedlockrepo, self).lock()

                  delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0'))

                  if delay:

                      time.sleep(delay)

                  return res

          repo.__class__ = delayedlockrepo

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				# Dummy extension that adds a delay after acquiring a lock.
				#
				# This extension can be used to test race conditions between lock acquisition.

				from __future__ import absolute_import

				import os
				import time

				def reposetup(ui, repo):

				class delayedlockrepo(repo.__class__):
				def lock(self):
				delay = float(os.environ.get('HGPRELOCKDELAY', '0.0'))
				if delay:
				time.sleep(delay)
				res = super(delayedlockrepo, self).lock()
				delay = float(os.environ.get('HGPOSTLOCKDELAY', '0.0'))
				if delay:
				time.sleep(delay)
				return res
				repo.__class__ = delayedlockrepo