1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 import com.oracle.java.testlibrary.Asserts; 25 import com.oracle.java.testlibrary.Utils; 26 import java.lang.management.ManagementFactory; 27 import java.lang.management.MemoryNotificationInfo; 28 import java.lang.management.MemoryPoolMXBean; 29 import java.util.concurrent.atomic.AtomicInteger; 30 import javax.management.ListenerNotFoundException; 31 import javax.management.Notification; 32 import javax.management.NotificationEmitter; 33 import javax.management.NotificationListener; 34 import sun.hotspot.code.BlobType; 35 36 /* 37 * @test ThresholdNotificationsTest 38 * @library /testlibrary /testlibrary/whitebox 39 * @build ThresholdNotificationsTest 40 * @run main ClassFileInstaller sun.hotspot.WhiteBox 41 * sun.hotspot.WhiteBox$WhiteBoxPermission 42 * @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing 43 * -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 44 * -XX:+SegmentedCodeCache -XX:CompileCommand=compileonly,null::* 45 * ThresholdNotificationsTest 46 * @summary testing of getUsageThreashold() 47 */ 48 public class ThresholdNotificationsTest implements NotificationListener { 49 50 private volatile long counter; 51 private final BlobType btype; 52 53 public static void main(String[] args) { 54 for (BlobType bt : BlobType.getAvailable()) { 55 new ThresholdNotificationsTest(bt).runTest(); 56 } 57 } 58 59 public ThresholdNotificationsTest(BlobType btype) { 60 this.btype = btype; 61 counter = 0L; 62 CodeCacheUtils.disableCollectionUsageThresholds(); 63 } 64 65 @Override 66 public void handleNotification(Notification notification, Object handback) { 67 String nType = notification.getType(); 68 String poolName 69 = CodeCacheUtils.getPoolNameFromNotification(notification); 70 // consider code cache events only 71 if (CodeCacheUtils.isAvailableCodeHeapPoolName(poolName)) { 72 Asserts.assertEQ(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED, 73 nType, "Unexpected event received: " + nType); 74 if (poolName.equals(btype.getMemoryPool().getName())) { 75 counter++; 76 } 77 } 78 } 79 80 protected void runTest() { 81 MemoryPoolMXBean bean = btype.getMemoryPool(); 82 ((NotificationEmitter) ManagementFactory.getMemoryMXBean()). 83 addNotificationListener(this, null, null); 84 for (int i = 0; i < Utils.ITERATIONS_COUNT; i++) { 85 CodeCacheUtils.hitUsageThreshold(bean, btype); 86 } 87 Utils.waitForCondition(() -> counter == Utils.ITERATIONS_COUNT); 88 try { 89 ((NotificationEmitter) ManagementFactory.getMemoryMXBean()). 90 removeNotificationListener(this); 91 } catch (ListenerNotFoundException ex) { 92 throw new AssertionError("Can't remove notification listener", ex); 93 } 94 System.out.printf("INFO: Scenario finished successfully for %s%n", 95 bean.getName()); 96 } 97 }