--- old/src/hotspot/share/runtime/thread.hpp	2019-04-18 22:08:24.988305942 -0400
+++ new/src/hotspot/share/runtime/thread.hpp	2019-04-18 22:08:24.216305956 -0400
@@ -417,6 +417,7 @@
   int omFreeProvision;                          // reload chunk size
   ObjectMonitor* omInUseList;                   // SLL to track monitors in circulation
   int omInUseCount;                             // length of omInUseList
+  volatile bool omShouldDeflateIdleMonitors;    // should deflate idle monitors
 
 #ifdef ASSERT
  private: