--- a/src/hotspot/share/jfr/jfr.hpp	Mon Sep 02 21:08:41 2019 +0200
+++ b/src/hotspot/share/jfr/jfr.hpp	Tue Sep 03 11:48:31 2019 +0200
@@ -48,9 +48,9 @@
   static void on_unloading_classes();
   static void on_thread_start(Thread* thread);
   static void on_thread_exit(Thread* thread);
-  static void exclude_thread(Thread* thread);
-  static bool is_excluded(Thread* thread);
-  static void include_thread(Thread* thread);
+  static void exclude_thread(const Thread* thread);
+  static bool is_excluded(const Thread* thread);
+  static void include_thread(const Thread* thread);
   static void on_java_thread_dismantle(JavaThread* jt);
   static void on_vm_shutdown(bool exception_handler = false);
   static bool on_flight_recorder_option(const JavaVMOption** option, char* delimiter);