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  • Committer: Canonical.com Patch Queue Manager
  • Date: 2010-09-01 08:02:42 UTC
  • mfrom: (5390.3.3 faster-revert-593560)
  • Revision ID: pqm@pqm.ubuntu.com-20100901080242-esg62ody4frwmy66
(spiv) Avoid repeatedly calling self.target.all_file_ids() in
 InterTree.iter_changes. (Andrew Bennetts)

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bzrlib/lru_cache.py
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"""A simple least-recently-used (LRU) cache."""
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from bzrlib import (
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    symbol_versioning,
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    trace,
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    )
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class LRUCache(object):
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    """A class which manages a cache of entries, removing unused ones."""
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    def __init__(self, max_cache=100, after_cleanup_count=None,
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                 after_cleanup_size=symbol_versioning.DEPRECATED_PARAMETER):
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        if symbol_versioning.deprecated_passed(after_cleanup_size):
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            symbol_versioning.warn('LRUCache.__init__(after_cleanup_size) was'
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                                   ' deprecated in 1.11. Use'
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                                   ' after_cleanup_count instead.',
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                                   DeprecationWarning)
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            after_cleanup_count = after_cleanup_size
 
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    def __init__(self, max_cache=100, after_cleanup_count=None):
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        self._cache = {}
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        # The "HEAD" of the lru linked list
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        self._most_recently_used = None