1 /*
 2  * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
 3  * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
 4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 5  *
 6  * This code is free software; you can redistribute it and/or modify it
 7  * under the terms of the GNU General Public License version 2 only, as
 8  * published by the Free Software Foundation.
 9  *
10  * This code is distributed in the hope that it will be useful, but WITHOUT
11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
13  * version 2 for more details (a copy is included in the LICENSE file that
14  * accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License version
17  * 2 along with this work; if not, write to the Free Software Foundation,
18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19  *
20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21  * or visit www.oracle.com if you need additional information or have any
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23  *
24  */
25 
26 /**
27  * @test id=default
28  * @summary Test JMX memory pools
29  * @requires vm.gc.Shenandoah
30  * @modules java.base/jdk.internal.misc
31  *          java.management
32  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g -Xms1g TestMemoryPools
33  */
34 
35 /**
36  * @test id=generational
37  * @summary Test JMX memory pools
38  * @requires vm.gc.Shenandoah
39  * @modules java.base/jdk.internal.misc
40  *          java.management
41  * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=generational -Xmx1g -Xms1g TestMemoryPools
42  */
43 
44 import java.lang.management.*;
45 import java.util.*;
46 
47 public class TestMemoryPools {
48 
49     public static void main(String[] args) throws Exception {
50         List<MemoryManagerMXBean> mms = ManagementFactory.getMemoryManagerMXBeans();
51         if (mms == null) {
52             throw new RuntimeException("getMemoryManagerMXBeans is null");
53         }
54         if (mms.isEmpty()) {
55             throw new RuntimeException("getMemoryManagerMXBeans is empty");
56         }
57         for (MemoryManagerMXBean mmBean : mms) {
58             String[] names = mmBean.getMemoryPoolNames();
59             if (names == null) {
60                 throw new RuntimeException("getMemoryPoolNames() is null");
61             }
62             if (names.length == 0) {
63                 throw new RuntimeException("getMemoryPoolNames() is empty");
64             }
65             for (String name : names) {
66                 if (name == null) {
67                     throw new RuntimeException("pool name is null");
68                 }
69                 if (name.length() == 0) {
70                     throw new RuntimeException("pool name is empty");
71                 }
72             }
73         }
74     }
75 }