83 lines
2.7 KiB
Java
83 lines
2.7 KiB
Java
/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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import java.nio.file.Paths;
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import jdk.jfr.Configuration;
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import jdk.jfr.Description;
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import jdk.jfr.Label;
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import jdk.jfr.Name;
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import jdk.jfr.Recording;
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import jdk.jfr.consumer.RecordingStream;
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public class JFRDynamicCDSApp {
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public static void main(String args[]) throws Exception {
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RecordingStream rs = new RecordingStream();
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rs.enable("JFRDynamicCDS.StressEvent");
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rs.startAsync();
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Recording recording = startRecording();
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loop();
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recording.stop();
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recording.close();
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rs.close();
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}
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static Recording startRecording() throws Exception {
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Configuration configuration = Configuration.getConfiguration("default");
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Recording recording = new Recording(configuration);
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recording.setName("internal");
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recording.enable(StressEvent.class);
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recording.setDestination(Paths.get("JFRDynamicCDS.jfr"));
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recording.start();
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return recording;
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}
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static void loop() {
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for (int i=0; i<100; i++) {
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StressEvent event = new StressEvent();
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event.iteration = i;
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event.description = "Stressful Event, take it easy!";
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event.customClazz = StressEvent.class;
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event.value = i;
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event.commit();
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}
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}
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/**
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* Internal StressEvent class.
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*/
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@Label("Stress Event")
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@Description("A duration event with 4 entries")
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@Name("JFRDynamicCDS.StressEvent")
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public static class StressEvent extends jdk.jfr.Event {
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public Class<?> customClazz;
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public String description;
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public int iteration;
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public double value;
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}
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}
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