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
> at the code, you'll get my meaning soon.
>
> Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
> ---
> src/conf/network_conf.c | 39 +++++++++++++++++++++++++++++++++------
> 1 file changed, 33 insertions(+), 6 deletions(-)
>
> diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c
> index 95d8b4d..5b0f36f 100644
> --- a/src/conf/network_conf.c
> +++ b/src/conf/network_conf.c
> @@ -156,31 +156,41 @@ virNetworkObjListPtr virNetworkObjListNew(void)
> virNetworkObjPtr virNetworkObjFindByUUID(virNetworkObjListPtr nets,
> const unsigned char *uuid)
> {
> + virNetworkObjPtr ret = NULL;
> size_t i;
>
> + virObjectLock(nets);
> for (i = 0; i < nets->count; i++) {
> virObjectLock(nets->objs[i]);
> - if (!memcmp(nets->objs[i]->def->uuid, uuid, VIR_UUID_BUFLEN))
> - return nets->objs[i];
> + if (!memcmp(nets->objs[i]->def->uuid, uuid, VIR_UUID_BUFLEN)) {
> + ret = nets->objs[i];
> + break;
> + }
> virObjectUnlock(nets->objs[i]);
> }
> + virObjectUnlock(nets);
>
> - return NULL;
> + return ret;
> }
>
> virNetworkObjPtr virNetworkObjFindByName(virNetworkObjListPtr nets,
> const char *name)
> {
> + virNetworkObjPtr ret = NULL;
> size_t i;
>
> + virObjectLock(nets);
> for (i = 0; i < nets->count; i++) {
> virObjectLock(nets->objs[i]);
> - if (STREQ(nets->objs[i]->def->name, name))
> - return nets->objs[i];
> + if (STREQ(nets->objs[i]->def->name, name)) {
> + ret = nets->objs[i];
> + break;
> + }
> virObjectUnlock(nets->objs[i]);
> }
> + virObjectUnlock(nets);
>
> - return NULL;
> + return ret;
> }
>
> bool
Later review showed that making the two functions above self locking
won't be ideal.
Peter
Attachment:
signature.asc
Description: Digital signature
-- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list