diff -r 2c3cc4b01880 -r c16ac7a2eba4 test/jdk/jdk/jfr/api/consumer/recordingstream/EventProducer.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/jdk/jfr/api/consumer/recordingstream/EventProducer.java	Wed Oct 30 19:43:52 2019 +0100
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2019, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+package jdk.jfr.api.consumer.recordingstream;
+
+import jdk.jfr.api.consumer.recordingstream.TestStart.StartEvent;
+
+class EventProducer extends Thread {
+    private final Object lock = new Object();
+    private boolean killed = false;
+    public void run() {
+        while (true) {
+            StartEvent s = new StartEvent();
+            s.commit();
+            synchronized (lock) {
+                try {
+                    lock.wait(10);
+                    if (killed) {
+                        return; // end thread
+                    }
+                } catch (InterruptedException e) {
+                    // ignore
+                }
+            }
+        }
+    }
+    public void kill()  {
+        synchronized (lock) {
+            this.killed = true;
+            lock.notifyAll();
+        }
+        try {
+            join();
+        } catch (InterruptedException e) {
+        }
+    }
+}