1 files changed, 5 insertions, 1 deletions
diff --git a/src/rt/sync/lock_free_queue.h b/src/rt/sync/lock_free_queue.h
index fba4aa9a..1f09ec52 100644
--- a/src/rt/sync/lock_free_queue.h
+++ b/src/rt/sync/lock_free_queue.h
@@ -2,14 +2,18 @@
 #define LOCK_FREE_QUEUE_H
 
 class lock_free_queue_node {
+public:
     lock_free_queue_node *next;
+    lock_free_queue_node();
 };
 
-class lock_free_queue {
+class lock_free_queue : lock_free_queue_node {
+    lock_free_queue_node *_tail;
 public:
     lock_free_queue();
     void enqueue(lock_free_queue_node *item);
     lock_free_queue_node *dequeue();
+    bool is_empty();
 };
 
 #endif /* LOCK_FREE_QUEUE_H */