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gstobject: add FIXME and docs for the disabled notify on parent

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We haven't found a way to re-enable emitting notify and deep-notify for parent
changes. Add a FIXME-2.0 and a doc blob on the property. See #693281.
This commit is contained in:
Stefan Sauer 2014-01-09 07:56:55 +01:00
parent 51fa54a281
commit 46b18f7a8b
1 changed files with 14 additions and 3 deletions
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17
gst/gstobject.c
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@ -172,6 +172,15 @@ gst_object_class_init (GstObjectClass * klass)
g_param_spec_string ("name", "Name", "The name of the object", NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
/**
* GstObject:parent:
*
* The parent of the object. Please note, that when changing the 'parent'
* property, we don't emit #GObject::notify and #GstObject::deep-notify
* signals due to locking issues. In some cases one can use
* #GstBin::element-added or #GstBin::element-removed signals on the parent to
* achieve a similar effect.
*/
properties[PROP_PARENT] =
g_param_spec_object ("parent", "Parent", "The parent of the object",
GST_TYPE_OBJECT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
@ -691,9 +700,11 @@ gst_object_set_parent (GstObject * object, GstObject * parent)
gst_object_ref_sink (object);
GST_OBJECT_UNLOCK (object);
/* FIXME, this does not work, the deep notify takes the lock from the parent
* object and deadlocks when the parent holds its lock when calling this
* function (like _element_add_pad()) */
/* FIXME-2.0: this does not work, the deep notify takes the lock from the
* parent object and deadlocks when the parent holds its lock when calling
* this function (like _element_add_pad()), we need to use a GRecMutex
* for locking the parent instead.
*/
/* g_object_notify_by_pspec ((GObject *)object, properties[PROP_PARENT]); */
return TRUE;