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  • Committer: John Arbash Meinel
  • Date: 2010-08-10 20:03:44 UTC
  • mto: This revision was merged to the branch mainline in revision 5376.
  • Revision ID: john@arbash-meinel.com-20100810200344-6muerwvkafqu7w47
Rework things a bit so the logic can be shared.

It turns out that some of the peak memory is actually during the inventory
to string to bundle translations. So re-use the refcount logic there.
This actually does show a decrease in peak memory.
Specifically 'cd bzr.dev; bzr send ../2.2' drops from 221MB peak to 156MB.

We don't speed anything up (16.5s both ways), but peak memory is quite
a bit better.

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bzrlib/textmerge.py
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# Copyright (C) 2005, 2006 Canonical Ltd
 
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# Copyright (C) 2006, 2009, 2010 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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#         Aaron Bentley <aaron.bentley@utoronto.ca>
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import bzrlib.patiencediff
 
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from bzrlib.lazy_import import lazy_import
 
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lazy_import(globals(), """
 
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from bzrlib import patiencediff
 
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""")
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class TextMerge(object):
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        """Return structured merge info.
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        See TextMerge docstring.
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        """
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        sm = bzrlib.patiencediff.PatienceSequenceMatcher(None, self.lines_a, self.lines_b)
 
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        sm = patiencediff.PatienceSequenceMatcher(
 
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            None, self.lines_a, self.lines_b)
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        pos_a = 0
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        pos_b = 0
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        for ai, bi, l in sm.get_matching_blocks():