[IronPython] Jit leak in defaultdict for Ipy 2.6.2
idan at cloudshare.com
Mon Nov 29 13:09:35 CET 2010
I have noticed the following method always adds a jitted method (looking at
the ".NET CLR Jit" performance counter) when it is run:
d = defaultdict(int)
I created my own implementation of defaultdict (in ipy):
def __init__(self, cls):
self.cls = cls
def __getitem__(self, key):
if key not in self:
self[key] = self.cls()
return super(defaultdict, self).__getitem__(key)
And I noticed that it does not leak JIT and it works 200 times faster when
running the method f().
Can you please look why this happens in the current implementation?
Also I was wondering if there are any other utility methods that use similar
code and probably will have the same problem.
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