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qom: Change object property iterator API contract

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Currently the ObjectProperty iterator API works as follows:

  ObjectPropertyIterator *iter;

  iter = object_property_iter_init(obj);
  while ((prop = object_property_iter_next(iter))) {
     ...
  }
  object_property_iter_free(iter);

This has the benefit that the ObjectPropertyIterator struct
can be opaque, but has the downside that callers need to
explicitly call a free function. It is also not in keeping
with iterator style used elsewhere in QEMU/GLib2.

This patch changes the API to use stack allocation instead:

  ObjectPropertyIterator iter;

  object_property_iter_init(&iter, obj);
  while ((prop = object_property_iter_next(&iter))) {
     ...
  }

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[AF: Fused ObjectPropertyIterator struct with typedef]
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Daniel P. Berrange 2015-12-09 12:34:02 +00:00 • committed by Andreas Färber
parent 16bf7f522a
commit 7746abd8e9
7 changed files with 36 additions and 58 deletions
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7
hw/ppc/spapr_drc.c
View file

@ -684,7 +684,7 @@ int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner,
{
Object *root_container;
ObjectProperty *prop;
ObjectPropertyIterator *iter;
ObjectPropertyIterator iter;
uint32_t drc_count = 0;
GArray *drc_indexes, *drc_power_domains;
GString *drc_names, *drc_types;
@ -708,8 +708,8 @@ int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner,
*/
root_container = container_get(object_get_root(), DRC_CONTAINER_PATH);
iter = object_property_iter_init(root_container);
while ((prop = object_property_iter_next(iter))) {
object_property_iter_init(&iter, root_container);
while ((prop = object_property_iter_next(&iter))) {
Object *obj;
sPAPRDRConnector *drc;
sPAPRDRConnectorClass *drck;
@ -750,7 +750,6 @@ int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner,
spapr_drc_get_type_str(drc->type));
drc_types = g_string_insert_len(drc_types, -1, "\0", 1);
}
object_property_iter_free(iter);
/* now write the drc count into the space we reserved at the
* beginning of the arrays previously