--- old/src/share/vm/gc/g1/g1CollectedHeap.cpp	2017-06-27 14:19:04.616538344 -0700
+++ new/src/share/vm/gc/g1/g1CollectedHeap.cpp	2017-06-27 14:19:04.484538810 -0700
@@ -76,6 +76,7 @@
 #include "oops/oop.inline.hpp"
 #include "prims/resolvedMethodTable.hpp"
 #include "runtime/atomic.hpp"
+#include "runtime/heapMonitoring.hpp"
 #include "runtime/init.hpp"
 #include "runtime/orderAccess.inline.hpp"
 #include "runtime/vmThread.hpp"
@@ -4307,6 +4308,13 @@
   g1_policy()->phase_times()->record_ref_proc_time(ref_proc_time * 1000.0);
 }
 
+void G1CollectedHeap::process_heap_monitoring() {
+  log_develop_trace(gc, ref)("HeapSampling [other] : heap monitoring processing");
+  G1STWIsAliveClosure is_alive(this);
+  G1KeepAliveClosure keep_alive(this);
+  HeapMonitoring::weak_oops_do(&is_alive, &keep_alive);
+}
+
 void G1CollectedHeap::preserve_cm_referents(G1ParScanThreadStateSet* per_thread_states) {
   // Any reference objects, in the collection set, that were 'discovered'
   // by the CM ref processor should have already been copied (either by
@@ -4525,6 +4533,7 @@
   } else {
     ref_processor_stw()->verify_no_references_recorded();
     process_weak_jni_handles();
+    process_heap_monitoring();
   }
 
   if (G1StringDedup::is_enabled()) {