On Fri, 6 Dec 2002, Kevin Jacobs wrote:
> I'm in the process of isolating the other leak that hits both the Python and
> C verions of datetime in the test_pickling() function, though I suspect that
> may be other incarnations of the above problem.
Here it is:
import sys
import cPickle
dumped = cPickle.dumps(object())
for i in range(10):
cPickle.loads(dumped)
print '*' * 10, 'total refs:', sys.gettotalrefcount()
With output:
********** total refs: 10929
********** total refs: 10930
********** total refs: 10931
********** total refs: 10932
********** total refs: 10933
[...]
The leak occurs in cPickle.loads, but not in pickle.loads. It also does not
depend on binary or non-binary mode of dumps(). It seems to require a
new-style object to occur, but not one that implements a custom hash
function as in the previously reported leak.
This is all I have time for this evening... If the case(s) are not cracked
tomorrow, I'll take a stab at dissecting the responsible C code.
Enjoy!
-Kevin
--
Kevin Jacobs
The OPAL Group - Enterprise Systems Architect
Voice: (216) 986-0710 x 19 E-mail: jacobs@theopalgroup.com
Fax: (216) 986-0714 WWW: http://www.theopalgroup.com
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