1 /* 2 * Copyright (c) 2017, 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 java.util.List; 25 import java.util.ArrayList; 26 import java.lang.management.*; 27 import static jdk.test.lib.Asserts.*; 28 import java.util.stream.*; 29 30 /* @test TestMemoryMXBeansAndPoolsPresence 31 * @bug 8191564 32 * @summary Tests that GarbageCollectorMXBeans and GC MemoryPools are created. 33 * @library /test/lib 34 * @modules java.base/jdk.internal.misc 35 * java.management 36 * @run main/othervm -XX:+UseG1GC TestMemoryMXBeansAndPoolsPresence G1 37 * @run main/othervm -XX:+UseConcMarkSweepGC TestMemoryMXBeansAndPoolsPresence CMS 38 * @run main/othervm -XX:+UseParallelGC TestMemoryMXBeansAndPoolsPresence Parallel 39 * @run main/othervm -XX:+UseSerialGC TestMemoryMXBeansAndPoolsPresence Serial 40 */ 41 42 class GCBeanDescription { 43 public String name; 44 public String[] poolNames; 45 46 public GCBeanDescription(String name, String[] poolNames) { 47 this.name = name; 48 this.poolNames = poolNames; 49 } 50 } 51 52 public class TestMemoryMXBeansAndPoolsPresence { 53 public static void test(GCBeanDescription... expectedBeans) { 54 List<MemoryPoolMXBean> memoryPools = ManagementFactory.getMemoryPoolMXBeans(); 55 56 List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans(); 57 assertEQ(expectedBeans.length, gcBeans.size()); 58 59 for (GCBeanDescription desc : expectedBeans) { 60 List<GarbageCollectorMXBean> beans = gcBeans.stream() 61 .filter(b -> b.getName().equals(desc.name)) 62 .collect(Collectors.toList()); 63 assertEQ(beans.size(), 1); 64 65 GarbageCollectorMXBean bean = beans.get(0); 66 assertEQ(desc.name, bean.getName()); 67 68 String[] pools = bean.getMemoryPoolNames(); 69 assertEQ(desc.poolNames.length, pools.length); 70 for (int i = 0; i < desc.poolNames.length; i++) { 71 assertEQ(desc.poolNames[i], pools[i]); 72 } 73 } 74 } 75 76 public static void main(String[] args) { 77 switch (args[0]) { 78 case "G1": 79 test(new GCBeanDescription("G1 Young Generation", new String[] {"G1 Eden Space", "G1 Survivor Space"}), 80 new GCBeanDescription("G1 Old Generation", new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"})); 81 break; 82 case "CMS": 83 test(new GCBeanDescription("ParNew", new String[] {"Par Eden Space", "Par Survivor Space"}), 84 new GCBeanDescription("ConcurrentMarkSweep", new String[] {"Par Eden Space", "Par Survivor Space", "CMS Old Gen"})); 85 break; 86 case "Parallel": 87 test(new GCBeanDescription("PS Scavenge", new String[] {"PS Eden Space", "PS Survivor Space"}), 88 new GCBeanDescription("PS MarkSweep", new String[] {"PS Eden Space", "PS Survivor Space", "PS Old Gen"})); 89 break; 90 case "Serial": 91 test(new GCBeanDescription("Copy", new String[] {"Eden Space", "Survivor Space"}), 92 new GCBeanDescription("MarkSweepCompact", new String[] {"Eden Space", "Survivor Space", "Tenured Gen"})); 93 break; 94 default: 95 assertTrue(false); 96 break; 97 98 } 99 } 100 }