pack-objects: merge read_lock and lock in packing_data struct

diff --git a/prio-queue.h b/prio-queue.h
index d030ec9dd6765447ad986a40945d1ed8bf9272a0..682e51867a3452bc1106bc63f44d6d6ba5f523b9 100644 (file)
--- a/prio-queue.h
+++ b/prio-queue.h
@@ -46,6 +46,12 @@ extern void prio_queue_put(struct prio_queue *, void *thing);
  */
 extern void *prio_queue_get(struct prio_queue *);
 
+/*
+ * Gain access to the "thing" that would be returned by
+ * prio_queue_get, but do not remove it from the queue.
+ */
+extern void *prio_queue_peek(struct prio_queue *);
+
 extern void clear_prio_queue(struct prio_queue *);
 
 /* Reverse the LIFO elements */