Added function for obtaining packet queue length

core/net/rime/packetqueue.c

@@ -32,7 +32,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * $Id: packetqueue.c,v 1.1 2009/04/29 20:47:30 adamdunkels Exp $
+ * $Id: packetqueue.c,v 1.2 2010/02/28 09:20:32 adamdunkels Exp $
  */
 
 /**
@@ -123,6 +123,12 @@ packetqueue_dequeue(struct packetqueue *q)
   }
 }
 /*---------------------------------------------------------------------------*/
+int
+packetqueue_len(struct packetqueue *q)
+{
+  return list_length(*q->list);
+}
+/*---------------------------------------------------------------------------*/
 struct queuebuf *
 packetqueue_queuebuf(struct packetqueue_item *i)
 {

core/net/rime/packetqueue.h

@@ -41,7 +41,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * $Id: packetqueue.h,v 1.3 2009/05/26 13:58:53 nvt-se Exp $
+ * $Id: packetqueue.h,v 1.4 2010/02/28 09:20:32 adamdunkels Exp $
  */
 
 /**
@@ -177,6 +177,17 @@ struct packetqueue_item *packetqueue_first(struct packetqueue *q);
  */
 void packetqueue_dequeue(struct packetqueue *q);
 
+/**
+ * \brief      Get the length of the packet queue
+ * \param q    A pointer to a struct packetqueue.
+ * \return     The number of packets queued on the packet queue
+ *
+ *             This function returns the number of packets that are
+ *             queued on the packet queue.
+ *
+ */
+int packetqueue_len(struct packetqueue *q);
+
 /**
  * @}
  */