upstream/mercurial-mirror Files · mercurial/thirdparty/concurrent/futures/__init__.py

dirstate: make sure the dirstate is loaded before the changelog (issue6303)...

dirstate: make sure the dirstate is loaded before the changelog (issue6303) Before this change, it was possible for the changelog to be loaded before the dirstate. If a transaction happens betwen the changelog and dirstate reading, the dirstate can up end poitning toward a revision not existing in the (olded) changelog. This lead to a warning. With this revision, we preload the dirstate parent before reading the changelog. This has a negligible performance impact on performance for all case we are tracking. Differential Revision: https://phab.mercurial-scm.org/D8528

Gregory Szorc - - Load All Authors

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      # Copyright 2009 Brian Quinlan. All Rights Reserved.

      # Licensed to PSF under a Contributor Agreement.

      """Execute computations asynchronously using threads or processes."""

      from __future__ import absolute_import

      __author__ = 'Brian Quinlan (brian@sweetapp.com)'

      from ._base import (

          FIRST_COMPLETED,

          FIRST_EXCEPTION,

          ALL_COMPLETED,

          CancelledError,

          TimeoutError,

          Future,

          Executor,

          wait,

          as_completed,

      )

      from .thread import ThreadPoolExecutor

      try:

          from .process import ProcessPoolExecutor

      except ImportError:

          # some platforms don't have multiprocessing

          pass

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				# Copyright 2009 Brian Quinlan. All Rights Reserved.
				# Licensed to PSF under a Contributor Agreement.

				"""Execute computations asynchronously using threads or processes."""

				from __future__ import absolute_import

				__author__ = 'Brian Quinlan (brian@sweetapp.com)'

				from ._base import (
				FIRST_COMPLETED,
				FIRST_EXCEPTION,
				ALL_COMPLETED,
				CancelledError,
				TimeoutError,
				Future,
				Executor,
				wait,
				as_completed,
				)
				from .thread import ThreadPoolExecutor

				try:
				from .process import ProcessPoolExecutor
				except ImportError:
				# some platforms don't have multiprocessing
				pass