--- /dev/null	2018-06-20 11:01:03.657616567 -0700
+++ new/test/jdk/jdk/net/Sockets/rsocket/TestThread.java	2018-06-22 12:24:27.814671095 -0700
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2000, 2002, 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.
+ */
+
+/* Utility class for test threads
+ *
+ */
+
+import java.io.*;
+
+
+public abstract class TestThread
+    extends Thread
+{
+    Exception failure = null;
+    String name;
+    protected final PrintStream log;
+    Thread main;
+
+    TestThread(String name, PrintStream log) {
+        super("TestThread-" + name);
+        this.name = name;
+        this.log = log;
+        this.main = Thread.currentThread();
+        setDaemon(true);
+    }
+
+    TestThread(String name) {
+        this(name, System.err);
+    }
+
+    abstract void go() throws Exception;
+
+    public void run() {
+        try {
+            go();
+        } catch (Exception x) {
+            failure = x;
+            main.interrupt();
+        }
+    }
+
+    int finish(long timeout) {
+        try {
+            join(timeout);
+        } catch (InterruptedException x) { }
+        if (isAlive() && (failure == null))
+            failure = new Exception(name + ": Timed out");
+        if (failure != null) {
+            failure.printStackTrace(log);
+            return 0;
+        }
+        return 1;
+    }
+
+    void finishAndThrow(long timeout) throws Exception {
+        try {
+            join(timeout);
+        } catch (InterruptedException x) { }
+        if (failure != null)
+            failure = new Exception(name + " threw an exception",
+                                    failure);
+        if (isAlive() && (failure == null))
+            failure = new Exception(name + " timed out");
+        if (failure != null)
+            throw failure;
+    }
+
+    public String toString() {
+        return name;
+    }
+
+}