[libvirt] [PATCH v1 27/31] virNetworkObjListPtr: Make APIs self-locking
Peter Krempa
pkrempa at redhat.com
Tue Mar 3 14:53:55 UTC 2015
On Thu, Feb 26, 2015 at 15:17:36 +0100, Michal Privoznik wrote:
> Every API that touches internal structure of the object must lock
> the object first. Not every API that has the object as an
> argument needs to do that though. Some APIs just pass the object
> to lower layers, which, however, must lock the object then. Look
Too, many, commas.
> at the code, you'll get my meaning soon.
>
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
> src/conf/network_conf.c | 39 +++++++++++++++++++++++++++++++++------
> 1 file changed, 33 insertions(+), 6 deletions(-)
>
> @@ -631,6 +644,7 @@ void virNetworkRemoveInactive(virNetworkObjListPtr nets,
> size_t i;
>
> virObjectUnlock(net);
> + virObjectLock(nets);
Hmm, okay. My comment to the previous patch is invalid as this would
actually introduce a lock ordering problem.
> for (i = 0; i < nets->count; i++) {
> virObjectLock(nets->objs[i]);
> if (nets->objs[i] == net) {
> @@ -642,6 +656,7 @@ void virNetworkRemoveInactive(virNetworkObjListPtr nets,
> }
> virObjectUnlock(nets->objs[i]);
> }
> + virObjectUnlock(nets);
> }
>
> /* return ips[index], or NULL if there aren't enough ips */
ACK
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