rcuja: new and destroy

[userspace-rcu.git] / rcuja / rcuja.c

diff --git a/rcuja/rcuja.c b/rcuja/rcuja.c
index 905375c925aa558f061861a4afae44213baedf5d..adb7b493524559fe8238f674b08858508dda1c2d 100644 (file)
--- a/rcuja/rcuja.c
+++ b/rcuja/rcuja.c
@@ -681,3 +681,33 @@ int ja_node_set_nth(struct cds_ja *ja,
        rcuja_shadow_unlock(shadow_node);
        return ret;
 }
+
+struct cds_ja *_cds_ja_new(const struct rcu_flavor_struct *flavor)
+{
+       struct cds_ja *ja;
+
+       ja = calloc(sizeof(*ja), 1);
+       if (!ja)
+               goto ja_error;
+       /* ja->root is NULL */
+       ja->ht = rcuja_create_ht(flavor);
+       if (!ja->ht)
+               goto ht_error;
+       return ja;
+
+ht_error:
+       free(ja);
+ja_error:
+       return NULL;
+}
+
+/*
+ * There should be no more concurrent add to the judy array while it is
+ * being destroyed (ensured by the caller).
+ */
+int cds_ja_destroy(struct cds_ja *ja)
+{
+       rcuja_shadow_prune(ja->ht,
+               RCUJA_SHADOW_CLEAR_FREE_NODE | RCUJA_SHADOW_CLEAR_FREE_LOCK);
+       return rcuja_delete_ht(ja->ht);
+}