[libvirt] [PATCH 1/3] python: Fix memory leaks on libvirt_virDomainGetSchedulerParameters

[Alex Jia]

Hi Eric,
Thanks for your comment, the PyDict_SetItem still works well for me, I can get a
expected result by calling related python binding API, Doesn't it work for you? 

In addition, you mean we need a cleanup patch to fix all of memory leaks issues, 
right? or need to define a global cleanup function to do this? For side effect,
in fact, I can't understand this now :( maybe, you may give me more details.

Thanks a lot!
Alex


----- Original Message -----
From: "Eric Blake" <eblake at redhat.com>
To: ajia at redhat.com
Cc: libvir-list at redhat.com
Sent: Sunday, January 1, 2012 7:52:21 AM
Subject: Re: [libvirt] [PATCH 1/3] python: Fix memory leaks on libvirt_virDomainGetSchedulerParameters

On 12/31/2011 03:29 AM, ajia at redhat.com wrote:
> From: Alex Jia <ajia at redhat.com>
> 
> Detected by valgrind. Leaks introduced in commit 62094f7 and commit c5cf6e1.
> 

>          key = libvirt_constcharPtrWrap(params[i].field);
>          PyDict_SetItem(info, key, val);
> +        Py_DECREF(key);
> +        Py_DECREF(val);

Can PyDict_SetItem() fail?  If so, shouldn't we be recovering from that
failure by cleaning up memory and returning a proper error, rather than
blindly proceeding on?  We ought to fix all PyDict_SetItem clients in
the same way as part of a global cleanup patch in the python directory,
which will have the side effect of fixing the memory leaks in the process.

-- 
Eric Blake   eblake at redhat.com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org