diff -r 7a2a740815b7 -r caf115bb98ad test/jdk/jdk/jfr/event/runtime/TestJavaThreadStatisticsEventBean.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/jdk/jdk/jfr/event/runtime/TestJavaThreadStatisticsEventBean.java Tue May 15 20:24:34 2018 +0200 @@ -0,0 +1,84 @@ +/* + * 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.event.runtime; + +import static jdk.test.lib.Asserts.assertTrue; + +import java.lang.management.ManagementFactory; +import java.lang.management.ThreadMXBean; +import java.time.Duration; +import java.util.List; + +import jdk.jfr.Recording; +import jdk.jfr.consumer.RecordedEvent; +import jdk.test.lib.jfr.EventNames; +import jdk.test.lib.jfr.Events; + +/* + * @test + * @key jfr + * @library /test/lib + * + * @run main/othervm jdk.jfr.event.runtime.TestJavaThreadStatisticsEventBean + */ +public class TestJavaThreadStatisticsEventBean { + private final static String EVENT_NAME = EventNames.JavaThreadStatistics; + + // Compare JFR thread counts to ThreadMXBean counts + public static void main(String[] args) throws Throwable { + long mxDaemonCount = -1; + long mxActiveCount = -1; + + // Loop until we are sure no threads were started during the recording. + Recording recording = null; + ThreadMXBean mxBean = ManagementFactory.getThreadMXBean(); + long totalCountBefore = -1; + while (totalCountBefore != mxBean.getTotalStartedThreadCount()) { + recording = new Recording(); + recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(10)); + totalCountBefore = mxBean.getTotalStartedThreadCount(); + recording.start(); + mxDaemonCount = mxBean.getDaemonThreadCount(); + mxActiveCount = mxBean.getThreadCount(); + recording.stop(); + final String msg = "testCountByMXBean: threadsBefore=%d, threadsAfter=%d%n"; + System.out.format(msg, totalCountBefore, mxBean.getTotalStartedThreadCount()); + } + + List events= Events.fromRecording(recording); + boolean isAnyFound = false; + for (RecordedEvent event : events) { + System.out.println("Event:" + event); + isAnyFound = true; + Events.assertField(event, "daemonCount").equal(mxDaemonCount); + Events.assertField(event, "activeCount").equal(mxActiveCount); + Events.assertField(event, "accumulatedCount").atLeast(mxActiveCount); + Events.assertField(event, "peakCount").atLeast(mxActiveCount); + } + assertTrue(isAnyFound, "Correct event not found"); + } + +}