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  • Committer: Martin von Gagern
  • Date: 2011-05-27 12:01:22 UTC
  • mto: (5939.1.1 integration)
  • mto: This revision was merged to the branch mainline in revision 5940.
  • Revision ID: martin.vgagern@gmx.net-20110527120122-7f2yvh17wrech14v
https://launchpad.net/bugs/421776
Use move instead of rename when adding packs to repository.

A rename might fail (e.g. on sftp) if the target file does exist. This is
because rename is guaranteed to be atomic.  The move operation, on the other
hand, does guarantee deletion of any existing target if possible, so it is
more appropriate here, where we are not dealing with locks but with content
files.

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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