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 * @requires vm.gc == null 37 * @run main/othervm -XX:+UseG1GC TestMemoryMXBeansAndPoolsPresence G1 38 * @run main/othervm -XX:+UseConcMarkSweepGC TestMemoryMXBeansAndPoolsPresence CMS 39 * @run main/othervm -XX:+UseParallelGC TestMemoryMXBeansAndPoolsPresence Parallel 40 * @run main/othervm -XX:+UseSerialGC TestMemoryMXBeansAndPoolsPresence Serial 41 */ 42 43 class GCBeanDescription { 44 public String name; 45 public String[] poolNames; 46 47 public GCBeanDescription(String name, String[] poolNames) { 48 this.name = name; 49 this.poolNames = poolNames; 50 } 51 } 52 53 public class TestMemoryMXBeansAndPoolsPresence { 54 public static void test(GCBeanDescription... expectedBeans) { 55 List<MemoryPoolMXBean> memoryPools = ManagementFactory.getMemoryPoolMXBeans(); 56 57 List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans(); 58 assertEQ(expectedBeans.length, gcBeans.size()); 59 60 for (GCBeanDescription desc : expectedBeans) { 61 List<GarbageCollectorMXBean> beans = gcBeans.stream() 62 .filter(b -> b.getName().equals(desc.name)) 63 .collect(Collectors.toList()); 64 assertEQ(beans.size(), 1); 65 66 GarbageCollectorMXBean bean = beans.get(0); 67 assertEQ(desc.name, bean.getName()); 68 69 String[] pools = bean.getMemoryPoolNames(); 70 assertEQ(desc.poolNames.length, pools.length); 71 for (int i = 0; i < desc.poolNames.length; i++) { 72 assertEQ(desc.poolNames[i], pools[i]); 73 } 74 } 75 } 76 77 public static void main(String[] args) { 78 switch (args[0]) { 79 case "G1": 80 test(new GCBeanDescription("G1 Young Generation", new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"}), 81 new GCBeanDescription("G1 Old Generation", new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"})); 82 break; 83 case "CMS": 84 test(new GCBeanDescription("ParNew", new String[] {"Par Eden Space", "Par Survivor Space"}), 85 new GCBeanDescription("ConcurrentMarkSweep", new String[] {"Par Eden Space", "Par Survivor Space", "CMS Old Gen"})); 86 break; 87 case "Parallel": 88 test(new GCBeanDescription("PS Scavenge", new String[] {"PS Eden Space", "PS Survivor Space"}), 89 new GCBeanDescription("PS MarkSweep", new String[] {"PS Eden Space", "PS Survivor Space", "PS Old Gen"})); 90 break; 91 case "Serial": 92 test(new GCBeanDescription("Copy", new String[] {"Eden Space", "Survivor Space"}), 93 new GCBeanDescription("MarkSweepCompact", new String[] {"Eden Space", "Survivor Space", "Tenured Gen"})); 94 break; 95 default: 96 assertTrue(false); 97 break; 98 99 } 100 } 101 }