[libvirt] virConnectClose question

[Radek Hladik]

Hello,
	I did find out that in some cases virConnectClose does not close the 
connection at all. It only returns -1 which by the documentation means 
error:
Returns: 0 in case of success or -1 in case of error.
But there is no other indication of what error it is. I am almost sure 
that it is because some open domains or other libvirt objects. If this 
is the case it would be good to add notice like: "You need to free all 
domains,....,etc before calling virConnectClose". And is there any 
possibility how to force closing the connection? I know that it is a 
good programming manner to close all objects before closing the master 
object but I did run into this in php-libvrit development and it is 
quite painful.
PHP is keeping a list of all resources (objects from libvirt) and is 
calling my destructors to close it. Unfortunately there are some 
problems with this:
* when garbage collector clears my resource my destructor is not called. 
It is probably my mistake that I do not set it correctly somewhere but I 
am not able to find out where.
* I can not influence the order of calls. It seems that there were some 
discussions and that for quite some time PHP is calling destructors in 
reverse order of creation. That would be good but I am not sure whether 
it is granted.
The problem with this all is that if I for some reason fail to free some 
domain object the connection is not closed. But as PHP does reuse 
threads the connection will be open forever and connection limit for 
libvirtd get drained very fast.
So basically my question is: should I implement some list of all objects 
I did create and free them before calling virConnectClose or is there 
any other way how to "terminate" libvirt connection for good?

Radek