--- /dev/null	2018-06-17 23:18:20.806999507 +0800
+++ new/test/jdk/jfr/event/runtime/TestJavaMonitorInflateEvent.java	2019-01-29 11:04:31.523040170 +0800
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2016, 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.event.runtime;
+
+import static jdk.testlibrary.Asserts.assertTrue;
+
+import java.nio.file.Paths;
+import java.time.Duration;
+import java.util.concurrent.CountDownLatch;
+
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.testlibrary.jfr.EventNames;
+import jdk.testlibrary.jfr.Events;
+import jdk.testlibrary.thread.TestThread;
+import jdk.testlibrary.thread.XRun;
+
+/*
+ * @test TestJavaMonitorInflateEvent
+ * @key jfr
+ * @library /lib/testlibrary
+ * @run main/othervm jdk.jfr.event.runtime.TestJavaMonitorInflateEvent
+ */
+public class TestJavaMonitorInflateEvent {
+
+    private static final String FIELD_KLASS_NAME = "monitorClass.name";
+    private static final String FIELD_ADDRESS    = "address";
+    private static final String FIELD_CAUSE      = "cause";
+
+    private static final String EVENT_NAME = EventNames.JavaMonitorInflate;
+    private static final long WAIT_TIME = 123456;
+
+    static class Lock {
+    }
+
+    public static void main(String[] args) throws Exception {
+        Recording recording = new Recording();
+        recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
+        final Lock lock = new Lock();
+        final CountDownLatch latch = new CountDownLatch(1);
+        // create a thread that waits
+        TestThread waitThread = new TestThread(new XRun() {
+            @Override
+            public void xrun() throws Throwable {
+                synchronized (lock) {
+                    latch.countDown();
+                    lock.wait(WAIT_TIME);
+                }
+            }
+        });
+        try {
+            recording.start();
+            waitThread.start();
+            latch.await();
+            synchronized (lock) {
+                lock.notifyAll();
+            }
+        } finally {
+            waitThread.join();
+            recording.stop();
+        }
+        final String thisThreadName = Thread.currentThread().getName();
+        final String waitThreadName = waitThread.getName();
+        final String lockClassName = lock.getClass().getName().replace('.', '/');
+        boolean isAnyFound = false;
+        try {
+            // Find at least one event with the correct monitor class and check the other fields
+            for (RecordedEvent event : Events.fromRecording(recording)) {
+                assertTrue(EVENT_NAME.equals(event.getEventType().getName()), "mismatched event types?");
+                // Check recorded inflation event is associated with the Lock class used in the test
+                final String recordedMonitorClassName = Events.assertField(event, FIELD_KLASS_NAME).getValue();
+                if (!lockClassName.equals(recordedMonitorClassName)) {
+                    continue;
+                }
+                // Check recorded thread matches one of the threads in the test
+                final String recordedThreadName = event.getThread().getJavaName();
+                if (!(recordedThreadName.equals(waitThreadName) || recordedThreadName.equals(thisThreadName))) {
+                    continue;
+                }
+                Events.assertField(event, FIELD_ADDRESS).notEqual(0L);
+                // unsupported cause in ajdk8
+                // Events.assertField(event, FIELD_CAUSE).notNull();
+                isAnyFound = true;
+                break;
+            }
+            assertTrue(isAnyFound, "Expected an inflation event from test");
+        } catch (Throwable e) {
+            recording.dump(Paths.get("failed.jfr"));
+            throw e;
+        } finally {
+            recording.close();
+        }
+    }
+}