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

revlog: add the option to track the expected compression upper bound...

revlog: add the option to track the expected compression upper bound There are various optimization we can do if we can estimate the size of delta before actually spending CPU compressing them. So we add a attributed dedicated to tracking that. We only use it on Manifest because (1) it structure is quite stable across all Mercurial repository so its compression ratio is fairly universal. This is the revlog with most extreme delta (cf the sparse-revlog optimization). This will be put to use in later changesets. Right now the compression upper bound is set to 10. This is a fairly conservative value (observed value is more around 3), but I prefer to be safe while introducing the optimization principles. We can tune the optimization threshold later.

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        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      # Copyright 2009 Brian Quinlan. All Rights Reserved.

      # Licensed to PSF under a Contributor Agreement.

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

        Gregory Szorc
    
futures: switch to absolute and relative imports...

              r37644
            
      from __future__ import absolute_import

        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      __author__ = 'Brian Quinlan (brian@sweetapp.com)'

        Gregory Szorc
    
futures: switch to absolute and relative imports...

              r37644
            
      from ._base import (

          FIRST_COMPLETED,

          FIRST_EXCEPTION,

          ALL_COMPLETED,

          CancelledError,

          TimeoutError,

          Future,

          Executor,

          wait,

          as_completed,

      )

      from .thread import ThreadPoolExecutor

        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      try:

        Gregory Szorc
    
futures: switch to absolute and relative imports...

              r37644
            
          from .process import ProcessPoolExecutor

        Gregory Szorc
    
thirdparty: vendor futures 3.2.0...

              r37641
            
      except ImportError:

          # some platforms don't have multiprocessing

          pass

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Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641	# Copyright 2009 Brian Quinlan. All Rights Reserved.
		# Licensed to PSF under a Contributor Agreement.

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

Gregory Szorc futures: switch to absolute and relative imports...	r37644	from __future__ import absolute_import

Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641	__author__ = 'Brian Quinlan (brian@sweetapp.com)'

Gregory Szorc futures: switch to absolute and relative imports...	r37644	from ._base import (
		FIRST_COMPLETED,
		FIRST_EXCEPTION,
		ALL_COMPLETED,
		CancelledError,
		TimeoutError,
		Future,
		Executor,
		wait,
		as_completed,
		)
		from .thread import ThreadPoolExecutor
Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641
		try:
Gregory Szorc futures: switch to absolute and relative imports...	r37644	from .process import ProcessPoolExecutor
Gregory Szorc thirdparty: vendor futures 3.2.0...	r37641	except ImportError:
		# some platforms don't have multiprocessing
		pass