--- old/src/share/vm/gc/g1/workerDataArray.hpp	2017-05-23 13:27:17.034020271 +0200
+++ new/src/share/vm/gc/g1/workerDataArray.hpp	2017-05-23 13:27:16.922016835 +0200
@@ -48,6 +48,7 @@
 
   void link_thread_work_items(WorkerDataArray<size_t>* thread_work_items, uint index = 0);
   void set_thread_work_item(uint worker_i, size_t value, uint index = 0);
+  void add_thread_work_item(uint worker_i, size_t value, uint index = 0);
   WorkerDataArray<size_t>* thread_work_items(uint index = 0) const {
     assert(index < MaxThreadWorkItems, "Tried to access thread work item %u max %u", index, MaxThreadWorkItems);
     return _thread_work_items[index];
--- old/src/share/vm/gc/g1/workerDataArray.inline.hpp	2017-05-23 13:27:17.606037819 +0200
+++ new/src/share/vm/gc/g1/workerDataArray.inline.hpp	2017-05-23 13:27:17.495034414 +0200
@@ -74,6 +74,13 @@
 }
 
 template <typename T>
+void WorkerDataArray<T>::add_thread_work_item(uint worker_i, size_t value, uint index) {
+  assert(index < MaxThreadWorkItems, "Tried to access thread work item %u (max %u)", index, MaxThreadWorkItems);
+  assert(_thread_work_items[index] != NULL, "No sub count");
+  _thread_work_items[index]->add(worker_i, value);
+}
+
+template <typename T>
 void WorkerDataArray<T>::add(uint worker_i, T value) {
   assert(worker_i < _length, "Worker %d is greater than max: %d", worker_i, _length);
   assert(_data[worker_i] != uninitialized(), "No data to add to for worker %d", worker_i);