--- old/src/hotspot/share/gc/shared/genCollectedHeap.hpp	2019-01-24 15:51:10.299429923 +0100
+++ new/src/hotspot/share/gc/shared/genCollectedHeap.hpp	2019-01-24 15:51:10.067430680 +0100
@@ -503,6 +503,10 @@
 
   // Save the tops of the spaces in all generations
   void record_gen_tops_before_GC() PRODUCT_RETURN;
+
+  // Return true if we need to perform full collection.
+  bool should_do_full_collection(size_t size, bool full,
+                                 bool is_tlab, GenerationType max_gen) const;
 };
 
 #endif // SHARE_GC_SHARED_GENCOLLECTEDHEAP_HPP