Change the traversal to use ao2_callback() instead of an ao2_iterator. Using

ao2_callback() is a much more efficient way of performing an operation on every
item in the container.  This change makes hashtest2 run in about 25% of the
time it ran before on my system.

In general, I would say that it makes the most sense to use an ao2_iterator if
the operation being performed is going to take a long time and you don't want
to keep the container locked while you work with each object.  Otherwise,
the use of ao2_callback is preferred.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@82282 65c4cc65-6c06-0410-ace0-fbb531ad65f3

utils/hashtest2.c

@@ -148,16 +148,17 @@ static void add_element(void)
 	els_added++; /* unprotected, sometimes off, but, not really important, either */
 }
 
+static int do_nothing_cb(void *obj, void *arg, int flags)
+{
+	return 0;
+}
+
 static void traverse_elements(void)
 {
-	struct ht_element *el;
-	struct ao2_iterator it = ao2_iterator_init(glob_hashtab, 0);
 #ifdef DEBUG
 	printf("Traverse hashtab\n");
 #endif
-	while ((el = ao2_iterator_next(&it))) {
-		ao2_ref(el,-1);
-	}
+	ao2_callback(glob_hashtab, OBJ_NODATA, do_nothing_cb, NULL);
 	els_traversals++; /* unprotected, sometimes off, but, not really important, either */
 }