Re: [Zope3-dev] Leak in zope.component?

2007-08-22 Thread Jim Fulton 


On Aug 22, 2007, at 8:16 AM, Christian Zagrodnick wrote:


Hi,

I'm doing things wich z3c.zalchemy and trying to find out why my  
database connections are kept open  even after unregistering  
everything.


Given the following very simple test:


import sys
import zope.component
import zope.interface
class IUtil(zope.interface.Interface):

... pass


gsm = zope.component.getGlobalSiteManager()
utility = object()
sys.getrefcount(utility)

2

gsm.registerUtility(utility, IUtil)
sys.getrefcount(utility)

6


gsm.unregisterUtility(utility, IUtil)

True

sys.getrefcount(utility)  # this fails

2

--
File "/Users/zagy/development/z3c.zalchemy/src/z3c/zalchemy/tests/ 
dispose.txt", line 17, in dispose.txt

Failed example:
   sys.getrefcount(utility)  # this fails
Expected:
   2
Got:
   4



So there are now two more references than before register/ 
unregister. Am I missing something? Or is it leaking somewhere?


Here's what I get with the trunk of zope.component:

[EMAIL PROTECTED]:~/p/zope/component/trunk$ bin/py

>>> import sys, zope.component, zope.interface
>>> class IUtil(zope.interface.Interface): pass
...
>>> gsm = zope.component.getGlobalSiteManager()
>>> utility = object(); sys.getrefcount(utility)
2
>>> gsm.registerUtility(utility, IUtil); sys.getrefcount(utility)
5
>>> gsm.unregisterUtility(utility, IUtil); sys.getrefcount(utility)
True
2

So I can't reproduce what you are seeing.

Try adding:

   >>> import gc; gc.collect()

before your last getrefcount call.

Jim

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[Zope3-dev] Leak in zope.component?

2007-08-22 Thread Christian Zagrodnick 

Hi,

I'm doing things wich z3c.zalchemy and trying to find out why my 
database connections are kept open  even after unregistering everything.


Given the following very simple test:


import sys
import zope.component
import zope.interface
class IUtil(zope.interface.Interface):

... pass


gsm = zope.component.getGlobalSiteManager()
utility = object()
sys.getrefcount(utility)

2

gsm.registerUtility(utility, IUtil)
sys.getrefcount(utility)

6


gsm.unregisterUtility(utility, IUtil)

True

sys.getrefcount(utility)  # this fails

2

--
File 
"/Users/zagy/development/z3c.zalchemy/src/z3c/zalchemy/tests/dispose.txt", 
line 17, in dispose.txt

Failed example:
   sys.getrefcount(utility)  # this fails
Expected:
   2
Got:
   4



So there are now two more references than before register/unregister. 
Am I missing something? Or is it leaking somewhere?



--
Christian Zagrodnick

gocept gmbh & co. kg  ·  forsterstrasse 29 · 06112 halle/saale
www.gocept.com · fon. +49 345 12298894 · fax. +49 345 12298891



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