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gstobject: Replace recursive gst_object_has_ancestor() with an iterative version

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This is slightly more efficient because the compiler can't do tail
recursion here and has to keep all stack frames.

Not that efficiency is that important here but I already had
the iterative version somewhere else and both are easy to read.
This commit is contained in:
Sebastian Dröge 2009-10-14 08:30:07 +02:00
parent 4917bb4fc2
commit b8454d623d
1 changed files with 12 additions and 9 deletions
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21
gst/gstobject.c
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@ -883,21 +883,24 @@ gst_object_unparent (GstObject * object)
gboolean
gst_object_has_ancestor (GstObject * object, GstObject * ancestor)
{
GstObject *parent;
gboolean result = FALSE;
GstObject *parent, *tmp;
if (object == NULL)
if (!ancestor || !object)
return FALSE;
if (object == ancestor)
return TRUE;
parent = gst_object_ref (object);
do {
if (parent == ancestor) {
gst_object_unref (parent);
return TRUE;
}
parent = gst_object_get_parent (object);
result = gst_object_has_ancestor (parent, ancestor);
if (parent)
tmp = gst_object_get_parent (parent);
gst_object_unref (parent);
parent = tmp;
} while (parent);
return result;
return FALSE;
}
/**