[libvirt] [PATCH] Domain Events Python Bindings
Ben Guthro
bguthro at virtualiron.com
Wed Oct 29 17:45:57 UTC 2008
Daniel Veillard wrote on 10/29/2008 01:09 PM:
>> + /* Call the Callback Dispatcher */
>> + pyobj_ret = PyObject_CallMethod(pyobj_conn_inst,
>> + (char*)"dispatchDomainEventCallbacks",
>> + (char*)"Oi",
>> + pyobj_dom_inst,
>> + event);
>> +
>> + Py_DECREF(pyobj_dom_inst);
>> + Py_DECREF(pyobj_conn_inst);
>
> We should make clear that the python callback can't keep any reference
> to the domain.
> Maybe the solution is to pass a name or UUID string and let the python
> user do the lookup, might also avoid the object duplication (but then
> the user will do the dictionary of domains and get into the same
> problems of object lifetime).... I hate asynch interfaces :-)
>
If the callback keeps a reference, then python will reference count it, and this will not get garbage collected until it gives up the last reference... am I misunderstanding something?
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