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  • Committer: John Arbash Meinel
  • Date: 2009-11-06 18:05:03 UTC
  • mto: This revision was merged to the branch mainline in revision 4814.
  • Revision ID: john@arbash-meinel.com-20091106180503-q3hcg1nxmut5b2cb
Stop holding the gil while extracting data.

Previous experience has shown that we don't really spend a lot
of time here, but there isn't any reason to hold the lock while
we do it anyway.

Performance testing has shown that for bzr operations 'with nogil'
doesn't really do much, which was generally expected. Any variation
observed is within the noise margins.

This is mostly about 'the right thing to do', and potential
future work where we may actually use threads.

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bzrlib/serializer.py
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# Copyright (C) 2009, 2010 Canonical Ltd
 
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# Copyright (C) 2005, 2006, 2009 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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        raise NotImplementedError(self.write_inventory_to_string)
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    def read_inventory_from_string(self, string, revision_id=None,
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                                   entry_cache=None, return_from_cache=False):
 
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                                   entry_cache=None):
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        """Read string into an inventory object.
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        :param string: The serialized inventory to read.
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        :param entry_cache: An optional cache of InventoryEntry objects. If
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            supplied we will look up entries via (file_id, revision_id) which
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            should map to a valid InventoryEntry (File/Directory/etc) object.
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        :param return_from_cache: Return entries directly from the cache,
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            rather than copying them first. This is only safe if the caller
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            promises not to mutate the returned inventory entries, but it can
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            make some operations significantly faster.
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        """
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        raise NotImplementedError(self.read_inventory_from_string)
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