--- a/src/hotspot/share/runtime/jniHandles.hpp	Mon Dec 17 08:25:57 2018 +0100
+++ b/src/hotspot/share/runtime/jniHandles.hpp	Mon Dec 17 16:55:17 2018 +0100
@@ -42,8 +42,10 @@
   inline static oop* jobject_ptr(jobject handle); // NOT jweak!
   inline static oop* jweak_ptr(jobject handle);
 
-  template<bool external_guard> inline static oop resolve_impl(jobject handle);
-  static oop resolve_jweak(jweak handle);
+  template <DecoratorSet decorators, bool external_guard> inline static oop resolve_impl(jobject handle);
+
+  // Resolve handle into oop, without keeping the object alive
+  inline static oop resolve_no_keepalive(jobject handle);
 
   // This method is not inlined in order to avoid circular includes between
   // this header file and thread.hpp.
@@ -70,6 +72,9 @@
   // Resolve externally provided handle into oop with some guards
   static oop resolve_external_guard(jobject handle);
 
+  // Check for equality without keeping objects alive
+  static bool is_same_object(jobject handle1, jobject handle2);
+
   // Local handles
   static jobject make_local(oop obj);
   static jobject make_local(JNIEnv* env, oop obj);    // Fast version when env is known