--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/jni/jfrUpcalls.hpp	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016, 2018, 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_JFR_JNI_JFRUPCALLS_HPP
+#define SHARE_VM_JFR_JNI_JFRUPCALLS_HPP
+
+#include "jni.h"
+#include "jfr/utilities/jfrAllocation.hpp"
+#include "utilities/exceptions.hpp"
+
+class JavaThread;
+
+//
+// Upcalls to Java for instrumentation purposes.
+// Targets are located in jdk.jfr.internal.JVMUpcalls.
+//
+class JfrUpcalls : AllStatic {
+ public:
+  static void new_bytes_eager_instrumentation(jlong trace_id,
+                                              jboolean force_instrumentation,
+                                              jclass super,
+                                              jint class_data_len,
+                                              const unsigned char* class_data,
+                                              jint* new_class_data_len,
+                                              unsigned char** new_class_data,
+                                              TRAPS);
+
+  static void on_retransform(jlong trace_id,
+                             jclass class_being_redefined,
+                             jint class_data_len,
+                             const unsigned char* class_data,
+                             jint* new_class_data_len,
+                             unsigned char** new_class_data,
+                             TRAPS);
+};
+
+#endif // SHARE_VM_JFR_JNI_JFRUPCALLS_HPP