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Viewing changes to bzrlib/lru_cache.py

  • Committer: Lawrence Mitchell
  • Date: 2011-11-08 10:54:09 UTC
  • mto: This revision was merged to the branch mainline in revision 6245.
  • Revision ID: wence@gmx.li-20111108105409-cgdqeek7vl7e8nbb
Only set check_clean if {clean} is asked for in template
      
The {clean} flag in templates requires an lstat of every file in the
repository.  If the filesystem is slow this can take a noticeable
amount of time.  So only switch check_clean to True if the template
actually asks for it, to avoid penalising those who don't want to
know.

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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