From: Sebastian Harl <sh@tokkee.org>
Date: Wed, 9 Jul 2014 09:34:10 +0000 (+0200)
Subject: avltree: Added helper to determine smallest node.
X-Git-Tag: sysdb-0.3.0~68
X-Git-Url: https://git.tokkee.org/?a=commitdiff_plain;h=9b2a1044801e9ba7d8d7d68bba3ac46742140235;p=sysdb.git

avltree: Added helper to determine smallest node.
---

diff --git a/src/utils/avltree.c b/src/utils/avltree.c
index 8c13233..6189d17 100644
--- a/src/utils/avltree.c
+++ b/src/utils/avltree.c
@@ -134,6 +134,20 @@ node_next(node_t *n)
 	return next;
 } /* node_next */
 
+static node_t *
+node_smallest(sdb_avltree_t *tree)
+{
+	node_t *n;
+
+	if (! tree)
+		return NULL;
+
+	n = tree->root;
+	while (n && n->left)
+		n = n->left;
+	return n;
+} /* node_smallest */
+
 static void
 tree_clear(sdb_avltree_t *tree)
 {
@@ -361,9 +375,7 @@ sdb_avltree_get_iter(sdb_avltree_t *tree)
 	pthread_rwlock_rdlock(&tree->lock);
 
 	iter->tree = tree;
-	iter->node = tree->root->left;
-	while (iter->node && iter->node->left)
-		iter->node = iter->node->left;
+	iter->node = node_smallest(tree);
 
 	pthread_rwlock_unlock(&tree->lock);
 	return iter;