1 /* 2 * Copyright (c) 2017, 2018, 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:+UseParallelGC TestMemoryMXBeansAndPoolsPresence Parallel 39 * @run main/othervm -XX:+UseSerialGC TestMemoryMXBeansAndPoolsPresence Serial 40 */ 41 42 /* @test TestMemoryMXBeansAndPoolsPresenceCMS 43 * @bug 8191564 44 * @library /test/lib 45 * @modules java.base/jdk.internal.misc 46 * java.management 47 * @comment Graal does not support CMS 48 * @requires vm.gc == null & !vm.graal.enabled 49 * @run main/othervm -XX:+UseConcMarkSweepGC TestMemoryMXBeansAndPoolsPresence CMS 50 */ 51 52 class GCBeanDescription { 53 public String name; 54 public String[] poolNames; 55 56 public GCBeanDescription(String name, String[] poolNames) { 57 this.name = name; 58 this.poolNames = poolNames; 59 } 60 } 61 62 public class TestMemoryMXBeansAndPoolsPresence { 63 public static void test(GCBeanDescription... expectedBeans) { 64 List<MemoryPoolMXBean> memoryPools = ManagementFactory.getMemoryPoolMXBeans(); 65 66 List<GarbageCollectorMXBean> gcBeans = ManagementFactory.getGarbageCollectorMXBeans(); 67 assertEQ(expectedBeans.length, gcBeans.size()); 68 69 for (GCBeanDescription desc : expectedBeans) { 70 List<GarbageCollectorMXBean> beans = gcBeans.stream() 71 .filter(b -> b.getName().equals(desc.name)) 72 .collect(Collectors.toList()); 73 assertEQ(beans.size(), 1); 74 75 GarbageCollectorMXBean bean = beans.get(0); 76 assertEQ(desc.name, bean.getName()); 77 78 String[] pools = bean.getMemoryPoolNames(); 79 assertEQ(desc.poolNames.length, pools.length); 80 for (int i = 0; i < desc.poolNames.length; i++) { 81 assertEQ(desc.poolNames[i], pools[i]); 82 } 83 } 84 } 85 86 public static void main(String[] args) { 87 switch (args[0]) { 88 case "G1": 89 test(new GCBeanDescription("G1 Young Generation", new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"}), 90 new GCBeanDescription("G1 Old Generation", new String[] {"G1 Eden Space", "G1 Survivor Space", "G1 Old Gen"})); 91 break; 92 case "CMS": 93 test(new GCBeanDescription("ParNew", new String[] {"Par Eden Space", "Par Survivor Space"}), 94 new GCBeanDescription("ConcurrentMarkSweep", new String[] {"Par Eden Space", "Par Survivor Space", "CMS Old Gen"})); 95 break; 96 case "Parallel": 97 test(new GCBeanDescription("PS Scavenge", new String[] {"PS Eden Space", "PS Survivor Space"}), 98 new GCBeanDescription("PS MarkSweep", new String[] {"PS Eden Space", "PS Survivor Space", "PS Old Gen"})); 99 break; 100 case "Serial": 101 test(new GCBeanDescription("Copy", new String[] {"Eden Space", "Survivor Space"}), 102 new GCBeanDescription("MarkSweepCompact", new String[] {"Eden Space", "Survivor Space", "Tenured Gen"})); 103 break; 104 default: 105 assertTrue(false); 106 break; 107 108 } 109 } 110 }