| /* |
| * Copyright (c) 2014, 2016, 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. |
| * |
| * 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 PoolsIndependenceTest |
| * @summary testing of getUsageThreshold() |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @library /test/lib / |
| * |
| * @build sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing |
| * -XX:+SegmentedCodeCache |
| * compiler.codecache.jmx.PoolsIndependenceTest |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI -XX:-UseCodeCacheFlushing -XX:-MethodFlushing |
| * -XX:-SegmentedCodeCache |
| * compiler.codecache.jmx.PoolsIndependenceTest |
| */ |
| |
| package compiler.codecache.jmx; |
| |
| import jdk.test.lib.Asserts; |
| import jdk.test.lib.Utils; |
| import sun.hotspot.code.BlobType; |
| |
| import javax.management.ListenerNotFoundException; |
| import javax.management.Notification; |
| import javax.management.NotificationEmitter; |
| import javax.management.NotificationListener; |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.MemoryNotificationInfo; |
| import java.lang.management.MemoryPoolMXBean; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| public class PoolsIndependenceTest implements NotificationListener { |
| |
| private final Map<String, AtomicInteger> counters; |
| private final BlobType btype; |
| private volatile long lastEventTimestamp; |
| |
| public PoolsIndependenceTest(BlobType btype) { |
| counters = new HashMap<>(); |
| for (BlobType bt : BlobType.getAvailable()) { |
| counters.put(bt.getMemoryPool().getName(), new AtomicInteger(0)); |
| } |
| this.btype = btype; |
| lastEventTimestamp = 0; |
| CodeCacheUtils.disableCollectionUsageThresholds(); |
| } |
| |
| public static void main(String[] args) { |
| for (BlobType bt : BlobType.getAvailable()) { |
| new PoolsIndependenceTest(bt).runTest(); |
| } |
| } |
| |
| protected void runTest() { |
| MemoryPoolMXBean bean = btype.getMemoryPool(); |
| ((NotificationEmitter) ManagementFactory.getMemoryMXBean()). |
| addNotificationListener(this, null, null); |
| bean.setUsageThreshold(bean.getUsage().getUsed() + 1); |
| long beginTimestamp = System.currentTimeMillis(); |
| CodeCacheUtils.WB.allocateCodeBlob( |
| CodeCacheUtils.ALLOCATION_SIZE, btype.id); |
| CodeCacheUtils.WB.fullGC(); |
| /* waiting for expected event to be received plus double the time took |
| to receive expected event(for possible unexpected) and |
| plus 1 second in case expected event received (almost)immediately */ |
| Utils.waitForCondition(() -> { |
| long currentTimestamp = System.currentTimeMillis(); |
| int eventsCount |
| = counters.get(btype.getMemoryPool().getName()).get(); |
| if (eventsCount > 0) { |
| if (eventsCount > 1) { |
| return true; |
| } |
| long timeLastEventTook |
| = beginTimestamp - lastEventTimestamp; |
| long timeoutValue |
| = 1000L + beginTimestamp + 3L * timeLastEventTook; |
| return currentTimestamp > timeoutValue; |
| } |
| return false; |
| }); |
| for (BlobType bt : BlobType.getAvailable()) { |
| int expectedNotificationsAmount = bt.equals(btype) ? 1 : 0; |
| CodeCacheUtils.assertEQorGTE(btype, counters.get(bt.getMemoryPool().getName()).get(), |
| expectedNotificationsAmount, String.format("Unexpected " |
| + "amount of notifications for pool: %s", |
| bt.getMemoryPool().getName())); |
| } |
| try { |
| ((NotificationEmitter) ManagementFactory.getMemoryMXBean()). |
| removeNotificationListener(this); |
| } catch (ListenerNotFoundException ex) { |
| throw new AssertionError("Can't remove notification listener", ex); |
| } |
| System.out.printf("INFO: Scenario with %s finished%n", bean.getName()); |
| } |
| |
| @Override |
| public void handleNotification(Notification notification, Object handback) { |
| String nType = notification.getType(); |
| String poolName |
| = CodeCacheUtils.getPoolNameFromNotification(notification); |
| // consider code cache events only |
| if (CodeCacheUtils.isAvailableCodeHeapPoolName(poolName)) { |
| Asserts.assertEQ(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED, |
| nType, "Unexpected event received: " + nType); |
| // receiving events from available CodeCache-related beans only |
| if (counters.get(poolName) != null) { |
| counters.get(poolName).incrementAndGet(); |
| lastEventTimestamp = System.currentTimeMillis(); |
| } |
| } |
| } |
| } |