--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2019-09-21 06:25:07.989962191 -0700
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2019-09-21 06:25:07.629962203 -0700
@@ -40,6 +40,7 @@
 #include "gc/g1/g1HeapVerifier.hpp"
 #include "gc/g1/g1HRPrinter.hpp"
 #include "gc/g1/g1HeapRegionAttr.hpp"
+#include "gc/g1/g1MemoryNodeManager.hpp"
 #include "gc/g1/g1MonitoringSupport.hpp"
 #include "gc/g1/g1RedirtyCardsQueue.hpp"
 #include "gc/g1/g1SurvivorRegions.hpp"
@@ -192,6 +193,9 @@
   // Callback for region mapping changed events.
   G1RegionMappingChangedListener _listener;
 
+  // Manages single or multi node memory.
+  G1MemoryNodeManager* _mem_node_mgr;
+
   // The sequence of all heap regions in the heap.
   HeapRegionManager* _hrm;
 
@@ -388,7 +392,10 @@
   // attempt to expand the heap if necessary to satisfy the allocation
   // request. 'type' takes the type of region to be allocated. (Use constants
   // Old, Eden, Humongous, Survivor defined in HeapRegionType.)
-  HeapRegion* new_region(size_t word_size, HeapRegionType type, bool do_expand);
+  HeapRegion* new_region(size_t word_size,
+                         HeapRegionType type,
+                         bool do_expand,
+                         uint node_index = G1MemoryNodeManager::AnyNodeIndex);
 
   // Initialize a contiguous set of free regions of length num_regions
   // and starting at index first so that they appear as a single
@@ -463,7 +470,7 @@
   // These methods are the "callbacks" from the G1AllocRegion class.
 
   // For mutator alloc regions.
-  HeapRegion* new_mutator_alloc_region(size_t word_size, bool force);
+  HeapRegion* new_mutator_alloc_region(size_t word_size, bool force, uint node_index);
   void retire_mutator_alloc_region(HeapRegion* alloc_region,
                                    size_t allocated_bytes);
 
@@ -548,11 +555,13 @@
 
   void resize_heap_if_necessary();
 
+  G1MemoryNodeManager* mem_node_mgr() const { return _mem_node_mgr; }
+
   // Expand the garbage-first heap by at least the given size (in bytes!).
   // Returns true if the heap was expanded by the requested amount;
   // false otherwise.
   // (Rounds up to a HeapRegion boundary.)
-  bool expand(size_t expand_bytes, WorkGang* pretouch_workers = NULL, double* expand_time_ms = NULL);
+  bool expand(size_t expand_bytes, uint node_index, WorkGang* pretouch_workers = NULL, double* expand_time_ms = NULL);
 
   // Returns the PLAB statistics for a given destination.
   inline G1EvacStats* alloc_buffer_stats(G1HeapRegionAttr dest);
@@ -928,7 +937,6 @@
 
   G1CMSubjectToDiscoveryClosure _is_subject_to_discovery_cm;
 public:
-
   RefToScanQueue *task_queue(uint i) const;
 
   uint num_task_queues() const;