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  • Committer: Martin Pool
  • Date: 2006-01-13 07:37:48 UTC
  • mto: (1185.50.49 bzr-jam-integration)
  • mto: This revision was merged to the branch mainline in revision 1549.
  • Revision ID: mbp@sourcefrog.net-20060113073748-d6893fbd5454d5a4
[cherrypick] Hold locks around entire diff operations to avoid thrashing
hashcache.  (from denys)

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bzrlib/diff.py
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        If set, use an external GNU diff and pass these options.
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    """
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    old_tree.lock_read()
 
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    try:
 
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        new_tree.lock_read()
 
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        try:
 
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            return _show_diff_trees(old_tree, new_tree, to_file,
 
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                                    specific_files, external_diff_options)
 
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        finally:
 
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            new_tree.unlock()
 
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    finally:
 
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        old_tree.unlock()
 
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def _show_diff_trees(old_tree, new_tree, to_file,
 
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                     specific_files, external_diff_options):
 
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    # TODO: Options to control putting on a prefix or suffix, perhaps as a format string
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    old_label = ''
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    new_label = ''