--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/prims/jvmtiExtensions.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_PRIMS_JVMTIEXTENSIONS_HPP
+#define SHARE_VM_PRIMS_JVMTIEXTENSIONS_HPP
+
+#include "jvmtifiles/jvmti.h"
+#include "jvmtifiles/jvmtiEnv.hpp"
+#include "memory/allocation.hpp"
+
+// JvmtiExtensions
+//
+// Maintains the list of extension functions and events in this JVMTI
+// implementation. The list of functions and events can be obtained by
+// the profiler using the JVMTI GetExtensionFunctions and
+// GetExtensionEvents functions.
+
+class JvmtiExtensions : public AllStatic {
+ private:
+  static GrowableArray<jvmtiExtensionFunctionInfo*>* _ext_functions;
+  static GrowableArray<jvmtiExtensionEventInfo*>* _ext_events;
+
+ public:
+  // register extensions function
+  static void register_extensions();
+
+  // returns the list of extension functions
+  static jvmtiError get_functions(JvmtiEnv* env, jint* extension_count_ptr,
+                                  jvmtiExtensionFunctionInfo** extensions);
+
+  // returns the list of extension events
+  static jvmtiError get_events(JvmtiEnv* env, jint* extension_count_ptr,
+                               jvmtiExtensionEventInfo** extensions);
+
+  // sets the callback function for an extension event and enables the event
+  static jvmtiError set_event_callback(JvmtiEnv* env, jint extension_event_index,
+                                       jvmtiExtensionEvent callback);
+};
+
+#endif // SHARE_VM_PRIMS_JVMTIEXTENSIONS_HPP