diff -r df6f2350edfa -r 6530de931b8e src/hotspot/share/gc/g1/g1ParScanThreadState.hpp
--- a/src/hotspot/share/gc/g1/g1ParScanThreadState.hpp	Wed Nov 13 10:49:32 2019 -0800
+++ b/src/hotspot/share/gc/g1/g1ParScanThreadState.hpp	Wed Nov 13 10:51:41 2019 -0800
@@ -95,6 +95,13 @@
   size_t _num_optional_regions;
   G1OopStarChunkedList* _oops_into_optional_regions;
 
+  G1NUMA* _numa;
+
+  // Records how many object allocations happened at each node during copy to survivor.
+  // Only starts recording when log of gc+heap+numa is enabled and its data is
+  // transferred when flushed.
+  size_t* _obj_alloc_stat;
+
 public:
   G1ParScanThreadState(G1CollectedHeap* g1h,
                        G1RedirtyCardsQueueSet* rdcqs,
@@ -207,6 +214,12 @@
   inline bool is_partially_trimmed() const;
 
   inline void trim_queue_to_threshold(uint threshold);
+
+  // NUMA statistics related methods.
+  inline void initialize_numa_stats();
+  inline void flush_numa_stats();
+  inline void update_numa_stats(uint node_index);
+
 public:
   oop copy_to_survivor_space(G1HeapRegionAttr const region_attr, oop const obj, markWord const old_mark);