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Viewing changes to cache_manager.py

[r=mbp] Remove duplicate definition of cache_manager._Cleanup.

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cache_manager.py
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            shutil.rmtree(self.tempdir)
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class _Cleanup(object):
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    """This class makes sure we clean up when CacheManager goes away.
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    We use a helper class to ensure that we are never in a refcycle.
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    """
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    def __init__(self, disk_blobs):
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        self.disk_blobs = disk_blobs
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        self.tempdir = None
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        self.small_blobs = None
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    def __del__(self):
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        self.finalize()
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    def finalize(self):
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        if self.disk_blobs is not None:
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            for info in self.disk_blobs.itervalues():
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                if info[-1] is not None:
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                    os.unlink(info[-1])
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            self.disk_blobs = None
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        if self.small_blobs is not None:
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            self.small_blobs.close()
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            self.small_blobs = None
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        if self.tempdir is not None:
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            shutil.rmtree(self.tempdir)
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class CacheManager(object):
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    _small_blob_threshold = 25*1024