--- old/src/hotspot/share/runtime/vmThread.cpp	2019-05-25 10:48:02.142888269 -0400
+++ new/src/hotspot/share/runtime/vmThread.cpp	2019-05-25 10:48:01.490888235 -0400
@@ -40,6 +40,7 @@
 #include "runtime/mutexLocker.hpp"
 #include "runtime/os.hpp"
 #include "runtime/safepoint.hpp"
+#include "runtime/synchronizer.hpp"
 #include "runtime/thread.inline.hpp"
 #include "runtime/vmThread.hpp"
 #include "runtime/vmOperations.hpp"
@@ -316,6 +317,14 @@
     assert(should_terminate(), "termination flag must be set");
   }
 
+  if (AsyncDeflateIdleMonitors) {
+    // AsyncDeflateIdleMonitors does a special deflation at the final
+    // safepoint in order to reduce the in-use monitor population that
+    // is reported ObjectSynchronizer::log_in_use_monitor_details() at
+    // VM exit.
+    ObjectSynchronizer::set_is_special_deflation_requested(true);
+  }
+
   // 4526887 let VM thread exit at Safepoint
   _cur_vm_operation = &halt_op;
   SafepointSynchronize::begin();