1 files changed, 83 insertions, 0 deletions
diff --git a/lib/qobj.c b/lib/qobj.c
new file mode 100644
index 0000000000..65b537f961
--- /dev/null
+++ b/lib/qobj.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2015-16  David Lamparter, for NetDEF, Inc.
+ *
+ * This file is part of Quagga
+ *
+ * Quagga is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * Quagga is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Quagga; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <zebra.h>
+
+#include "thread.h"
+#include "memory.h"
+#include "hash.h"
+#include "log.h"
+#include "qobj.h"
+
+static struct hash *nodes = NULL;
+
+static unsigned int qobj_key (void *data)
+{
+  struct qobj_node *node = data;
+  return (unsigned int)node->nid;
+}
+
+static int qobj_cmp (const void *a, const void *b)
+{
+  const struct qobj_node *na = a, *nb = b;
+  return na->nid == nb->nid;
+}
+
+void qobj_reg(struct qobj_node *node, struct qobj_nodetype *type)
+{
+  node->type = type;
+  do
+    {
+      node->nid  = (uint64_t)random();
+      node->nid ^= (uint64_t)random() << 32;
+    }
+  while (hash_get (nodes, node, hash_alloc_intern) != node);
+}
+
+void qobj_unreg(struct qobj_node *node)
+{
+  hash_release (nodes, node);
+}
+
+struct qobj_node *qobj_get(uint64_t id)
+{
+  struct qobj_node dummy = { .nid = id };
+  return hash_lookup (nodes, &dummy);
+}
+
+void *qobj_get_typed(uint64_t id, struct qobj_nodetype *type)
+{
+  struct qobj_node *node = qobj_get(id);
+  if (!node || node->type != type)
+    return NULL;
+  return (char *)node - node->type->node_member_offset;
+}
+
+void qobj_init (void)
+{
+  nodes = hash_create (qobj_key, qobj_cmp);
+}
+
+void qobj_finish (void)
+{
+  hash_free (nodes);
+  nodes = NULL;
+}