| /* |
| * Copyright (c) 2018, Red Hat, Inc. 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. |
| * |
| * 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. |
| * |
| */ |
| |
| /* |
| * @test TestPauseNotifications |
| * @summary Check that MX notifications are reported for all cycles |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
| * -XX:+ShenandoahDegeneratedGC |
| * TestPauseNotifications |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive |
| * -XX:-ShenandoahDegeneratedGC |
| * TestPauseNotifications |
| */ |
| |
| /* |
| * @test TestPauseNotifications |
| * @summary Check that MX notifications are reported for all cycles |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive |
| * TestPauseNotifications |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive |
| * TestPauseNotifications |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=static |
| * TestPauseNotifications |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact |
| * TestPauseNotifications |
| */ |
| |
| /* |
| * @test TestPauseNotifications |
| * @summary Check that MX notifications are reported for all cycles |
| * @requires vm.gc.Shenandoah & !vm.graal.enabled |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu -XX:ShenandoahGCHeuristics=aggressive |
| * TestPauseNotifications |
| * |
| * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions |
| * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu |
| * TestPauseNotifications |
| */ |
| |
| import java.util.*; |
| import java.util.concurrent.atomic.*; |
| import javax.management.*; |
| import java.lang.management.*; |
| import javax.management.openmbean.*; |
| |
| import com.sun.management.GarbageCollectionNotificationInfo; |
| |
| public class TestPauseNotifications { |
| |
| static final long HEAP_MB = 128; // adjust for test configuration above |
| static final long TARGET_MB = Long.getLong("target", 2_000); // 2 Gb allocation |
| |
| static volatile Object sink; |
| |
| public static void main(String[] args) throws Exception { |
| final AtomicLong pausesDuration = new AtomicLong(); |
| final AtomicLong cyclesDuration = new AtomicLong(); |
| |
| NotificationListener listener = new NotificationListener() { |
| @Override |
| public void handleNotification(Notification n, Object o) { |
| if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) { |
| GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData()); |
| |
| System.out.println(info.getGcInfo().toString()); |
| System.out.println(info.getGcName()); |
| System.out.println(); |
| |
| long d = info.getGcInfo().getDuration(); |
| |
| String name = info.getGcName(); |
| if (name.contains("Shenandoah")) { |
| if (name.equals("Shenandoah Pauses")) { |
| pausesDuration.addAndGet(d); |
| } else if (name.equals("Shenandoah Cycles")) { |
| cyclesDuration.addAndGet(d); |
| } else { |
| throw new IllegalStateException("Unknown name: " + name); |
| } |
| } |
| } |
| } |
| }; |
| |
| for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) { |
| ((NotificationEmitter) bean).addNotificationListener(listener, null, null); |
| } |
| |
| final int size = 100_000; |
| long count = TARGET_MB * 1024 * 1024 / (16 + 4 * size); |
| |
| for (int c = 0; c < count; c++) { |
| sink = new int[size]; |
| } |
| |
| Thread.sleep(1000); |
| |
| long pausesActual = pausesDuration.get(); |
| long cyclesActual = cyclesDuration.get(); |
| |
| long minExpected = 1; |
| long maxExpected = Long.MAX_VALUE; |
| |
| { |
| String msg = "Pauses expected = [" + minExpected + "; " + maxExpected + "], actual = " + pausesActual; |
| if (minExpected < pausesActual && pausesActual < maxExpected) { |
| System.out.println(msg); |
| } else { |
| throw new IllegalStateException(msg); |
| } |
| } |
| |
| { |
| String msg = "Cycles expected = [" + minExpected + "; " + maxExpected + "], actual = " + cyclesActual; |
| if (minExpected < cyclesActual && cyclesActual < maxExpected) { |
| System.out.println(msg); |
| } else { |
| throw new IllegalStateException(msg); |
| } |
| } |
| |
| { |
| String msg = "Cycle duration (" + cyclesActual + "), pause duration (" + pausesActual + ")"; |
| if (pausesActual < cyclesActual) { |
| System.out.println(msg); |
| } else { |
| throw new IllegalStateException(msg); |
| } |
| } |
| } |
| } |