1 /* 2 * Copyright (c) 2014, 2015, 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 jdk.test.lib.Asserts; 25 import jdk.test.lib.Utils; 26 import java.lang.management.ManagementFactory; 27 import java.lang.management.MemoryNotificationInfo; 28 import java.lang.management.MemoryPoolMXBean; 29 import javax.management.ListenerNotFoundException; 30 import javax.management.Notification; 31 import javax.management.NotificationEmitter; 32 import javax.management.NotificationListener; 33 import sun.hotspot.code.BlobType; 34 35 /* 36 * @test ThresholdNotificationsTest 37 * @library /testlibrary /test/lib 38 * @modules java.base/sun.misc 39 * java.management 40 * @build ThresholdNotificationsTest 41 * @run main ClassFileInstaller sun.hotspot.WhiteBox 42 * sun.hotspot.WhiteBox$WhiteBoxPermission 43 * @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing 44 * -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI 45 * -XX:+SegmentedCodeCache -XX:CompileCommand=compileonly,null::* 46 * ThresholdNotificationsTest 47 * @summary testing of getUsageThreshold() 48 */ 49 public class ThresholdNotificationsTest implements NotificationListener { 50 51 private final static long WAIT_TIME = 10000L; 52 private volatile long counter; 53 private final BlobType btype; 54 55 public static void main(String[] args) { 56 for (BlobType bt : BlobType.getAvailable()) { 57 new ThresholdNotificationsTest(bt).runTest(); 58 } 59 } 60 61 public ThresholdNotificationsTest(BlobType btype) { 62 this.btype = btype; 63 counter = 0L; 64 CodeCacheUtils.disableCollectionUsageThresholds(); 65 } 66 67 @Override 68 public void handleNotification(Notification notification, Object handback) { 69 String nType = notification.getType(); 70 String poolName 71 = CodeCacheUtils.getPoolNameFromNotification(notification); 72 // consider code cache events only 73 if (CodeCacheUtils.isAvailableCodeHeapPoolName(poolName)) { 74 Asserts.assertEQ(MemoryNotificationInfo.MEMORY_THRESHOLD_EXCEEDED, 75 nType, "Unexpected event received: " + nType); 76 if (poolName.equals(btype.getMemoryPool().getName())) { 77 counter++; 78 } 79 } 80 } 81 82 protected void runTest() { 83 int iterationsCount = 84 Integer.getInteger("jdk.test.lib.iterations", 1); 85 MemoryPoolMXBean bean = btype.getMemoryPool(); 86 ((NotificationEmitter) ManagementFactory.getMemoryMXBean()). 87 addNotificationListener(this, null, null); 88 for (int i = 0; i < iterationsCount; i++) { 89 CodeCacheUtils.hitUsageThreshold(bean, btype); 90 } 91 Asserts.assertTrue( 92 Utils.waitForCondition( 93 () -> (CodeCacheUtils.isCodeHeapPredictable(btype) ? 94 (counter == iterationsCount) : (counter >= iterationsCount)), 95 WAIT_TIME), 96 "Couldn't receive expected notifications count"); 97 try { 98 ((NotificationEmitter) ManagementFactory.getMemoryMXBean()). 99 removeNotificationListener(this); 100 } catch (ListenerNotFoundException ex) { 101 throw new AssertionError("Can't remove notification listener", ex); 102 } 103 System.out.printf("INFO: Scenario finished successfully for %s%n", 104 bean.getName()); 105 } 106 }