--- old/src/hotspot/share/runtime/synchronizer.hpp	2019-04-18 22:07:28.412306922 -0400
+++ new/src/hotspot/share/runtime/synchronizer.hpp	2019-04-18 22:07:27.688306935 -0400
@@ -141,6 +141,7 @@
   static void deflate_idle_monitors(DeflateMonitorCounters* counters);
   static void deflate_global_idle_monitors_using_JT();
   static void deflate_per_thread_idle_monitors_using_JT();
+  static void deflate_common_idle_monitors_using_JT(bool is_global, JavaThread * self);
   static void deflate_thread_local_monitors(Thread* thread, DeflateMonitorCounters* counters);
   static void prepare_deflate_idle_monitors(DeflateMonitorCounters* counters);
   static void finish_deflate_idle_monitors(DeflateMonitorCounters* counters);