--- /dev/null 2016-10-25 08:46:44.038854975 +0200
+++ new/src/share/classes/sun/evtracing/parser/metadata/MetadataRef.java 2016-10-25 10:40:43.229800066 +0200
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2014, 2015, Dynatrace and/or its affiliates. All rights reserved.
+ *
+ * This file is part of the Lock Contention Tracing Subsystem for the HotSpot
+ * Virtual Machine, which is developed at Christian Doppler Laboratory on
+ * Monitoring and Evolution of Very-Large-Scale Software Systems. Please
+ * contact us at if you need additional information
+ * or have any questions.
+ *
+ * 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, see .
+ *
+ */
+package sun.evtracing.parser.metadata;
+
+public class MetadataRef {
+
+ private final long identifier;
+ private T metadata;
+
+ public MetadataRef(long identifier) {
+ this(identifier, null);
+ }
+
+ public MetadataRef(long identifier, T metadata) {
+ this.identifier = identifier;
+ this.metadata = metadata;
+ }
+
+ public long identifier() {
+ return identifier;
+ }
+
+ public T metadata() {
+ return metadata;
+ }
+
+ public void setMetadata(T metadata) {
+ assert (this.metadata == null) : "set only allowed once";
+ this.metadata = metadata;
+ }
+
+}