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/*
* Copyright (c) 2018, Red Hat, Inc. All rights reserved.
+ * Copyright Amazon.com Inc. 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.
* -XX:+UseShenandoahGC -XX:ShenandoahGCMode=iu
* -Dprecise=false
* TestChurnNotifications
*/
+ /*
+ * @test id=generational
+ * @summary Check that MX notifications are reported for all cycles
+ * @library /test/lib /
+ * @requires vm.gc.Shenandoah
+ *
+ * @run main/othervm -Xmx128m -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions
+ * -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational
+ * -Dprecise=false
+ * TestChurnNotifications
+ */
+
import java.util.*;
import java.util.concurrent.atomic.*;
import javax.management.*;
import java.lang.management.*;
import javax.management.openmbean.*;
static final long M = 1024 * 1024;
static volatile Object sink;
+ private static final String DEFAULT_POOL_NAME = "Shenandoah";
+ private static final String YOUNG_GEN_POOL_NAME = "Shenandoah Young Gen";
+
+ private static MemoryUsage getUsage(Map<String, MemoryUsage> pools) {
+ MemoryUsage usage = pools.get(DEFAULT_POOL_NAME);
+ if (usage == null) {
+ usage = pools.get(YOUNG_GEN_POOL_NAME);
+ }
+ return usage;
+ }
+
public static void main(String[] args) throws Exception {
final long startTime = System.currentTimeMillis();
final AtomicLong churnBytes = new AtomicLong();
if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
Map<String, MemoryUsage> mapBefore = info.getGcInfo().getMemoryUsageBeforeGc();
Map<String, MemoryUsage> mapAfter = info.getGcInfo().getMemoryUsageAfterGc();
! MemoryUsage before = mapBefore.get("Shenandoah");
! MemoryUsage after = mapAfter.get("Shenandoah");
if ((before != null) && (after != null)) {
long diff = before.getUsed() - after.getUsed();
if (diff > 0) {
churnBytes.addAndGet(diff);
if (n.getType().equals(GarbageCollectionNotificationInfo.GARBAGE_COLLECTION_NOTIFICATION)) {
GarbageCollectionNotificationInfo info = GarbageCollectionNotificationInfo.from((CompositeData) n.getUserData());
Map<String, MemoryUsage> mapBefore = info.getGcInfo().getMemoryUsageBeforeGc();
Map<String, MemoryUsage> mapAfter = info.getGcInfo().getMemoryUsageAfterGc();
! MemoryUsage before = getUsage(mapBefore);
! MemoryUsage after = getUsage(mapAfter);
if ((before != null) && (after != null)) {
long diff = before.getUsed() - after.getUsed();
if (diff > 0) {
churnBytes.addAndGet(diff);
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