--- /dev/null 2019-02-07 20:54:51.336000000 +0300 +++ new/test/jdk/jfr/jmx/TestSnapshot.java 2019-02-08 18:33:49.231612198 +0300 @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2013, 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. 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.jmx; + +import java.io.IOException; +import java.util.List; + +import jdk.jfr.FlightRecorder; +import jdk.jfr.Recording; +import jdk.management.jfr.FlightRecorderMXBean; +import jdk.management.jfr.RecordingInfo; +import jdk.test.lib.jfr.SimpleEvent; + +/** + * @test + * @key jfr + * + * @library /lib / + * @run main/othervm jdk.jfr.jmx.TestSnapshot + */ +public class TestSnapshot { + + public static void main(String[] args) throws Exception { + testEmpty(); + testStopped(); + } + + private static void testStopped() throws IOException { + try (Recording r = new Recording()) { + r.enable(SimpleEvent.class); + r.start(); + SimpleEvent se = new SimpleEvent(); + se.commit(); + r.stop(); + + try (Recording snapshot = FlightRecorder.getFlightRecorder().takeSnapshot()) { + r.close(); + FlightRecorderMXBean mxBean = JmxHelper.getFlighteRecorderMXBean(); + List recs = mxBean.getRecordings(); + JmxHelper.verifyEquals(recs.get(0), snapshot); + } + } + } + + private static void testEmpty() throws IOException { + try (Recording snapshot = FlightRecorder.getFlightRecorder().takeSnapshot()) { + FlightRecorderMXBean mxBean = JmxHelper.getFlighteRecorderMXBean(); + List recs = mxBean.getRecordings(); + JmxHelper.verifyEquals(recs.get(0), snapshot); + } + } +}