--- old/src/share/vm/gc_implementation/shenandoah/shenandoahControlThread.hpp	2019-11-11 16:09:54.255343035 +0100
+++ new/src/share/vm/gc_implementation/shenandoah/shenandoahControlThread.hpp	2019-11-11 16:09:54.167343040 +0100
@@ -58,6 +58,7 @@
 private:
   typedef enum {
     none,
+    concurrent_traversal,
     concurrent_normal,
     stw_degenerated,
     stw_full
@@ -96,6 +97,7 @@
   void service_concurrent_normal_cycle(GCCause::Cause cause);
   void service_stw_full_cycle(GCCause::Cause cause);
   void service_stw_degenerated_cycle(GCCause::Cause cause, ShenandoahHeap::ShenandoahDegenPoint point);
+  void service_concurrent_traversal_cycle(GCCause::Cause cause);
   void service_uncommit(double shrink_before);
 
   bool try_set_alloc_failure_gc();