1 /*
2 * Copyright 2003-2004 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 */
23
24 /*
25 * @test
26 * @bug 4947536
27 * @summary Basic unit test of ManagementFactory.getPlatformMBeanServer()
28 * @author Mandy Chung
29 */
30
31 import java.lang.management.*;
32 import static java.lang.management.ManagementFactory.*;
33 import java.util.*;
34 import java.util.logging.LogManager;
35
36 import javax.management.MBeanServer;
37 import javax.management.ObjectName;
38
39 public class PlatformMBeanServerTest {
40 public static void main(String[] argv) throws Exception {
41 MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
42 printMBeans(mbs);
43
44 // validate if all standard JVM MBeans are registered
45 checkStandardMBeans(mbs);
46
47 // validate if all platform MBeans are registered
48 checkPlatformMBeans(mbs);
49
50 MBeanServer mbs1 = ManagementFactory.getPlatformMBeanServer();
51 if (mbs != mbs1) {
52 throw new RuntimeException("Second call to getPlatformMBeanServer()"
53 + " returns a different MBeanServer.");
54 }
55
56 System.out.println("Test passed.");
57 }
58
59 private static void checkMBean(MBeanServer mbs, String mbeanName)
60 throws Exception {
61 try {
62 ObjectName objName = new ObjectName(mbeanName);
63 // We could call mbs.isRegistered(objName) here.
64 // Calling getMBeanInfo will throw exception if not found.
65 mbs.getMBeanInfo(objName);
66 } catch (Exception e) {
67 throw e;
68 }
69 }
70 private static void checkStandardMBeans(MBeanServer mbs) throws Exception {
71 checkMBean(mbs, CLASS_LOADING_MXBEAN_NAME);
72 checkMBean(mbs, MEMORY_MXBEAN_NAME);
73 checkMBean(mbs, OPERATING_SYSTEM_MXBEAN_NAME);
74 checkMBean(mbs, RUNTIME_MXBEAN_NAME);
75 checkMBean(mbs, THREAD_MXBEAN_NAME);
76 if (ManagementFactory.getCompilationMXBean() != null) {
77 checkMBean(mbs, COMPILATION_MXBEAN_NAME);
78 }
79
80 List pools = ManagementFactory.getMemoryPoolMXBeans();
81 for (ListIterator iter = pools.listIterator(); iter.hasNext(); ) {
82 MemoryPoolMXBean p = (MemoryPoolMXBean) iter.next();
83 checkMBean(mbs, MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",name=" + p.getName());
84 }
85
86 // Check the number of memory pools in the mbs
87 Set set = mbs.queryNames(new ObjectName(MEMORY_POOL_MXBEAN_DOMAIN_TYPE + ",*"), null);
88 if (set.size() != pools.size()) {
89 throw new RuntimeException("Unexpected number of memory pools:" +
90 "MBeanServer has " + set.size() +
91 ". Expected = " + pools.size());
92 }
93
94 List mgrs = ManagementFactory.getMemoryManagerMXBeans();
95 int num_mgrs = 0;
96 for (ListIterator iter = mgrs.listIterator(); iter.hasNext(); ) {
97 MemoryManagerMXBean m = (MemoryManagerMXBean) iter.next();
98 if (m instanceof GarbageCollectorMXBean) {
99 checkMBean(mbs, GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE
100 + ",name=" + m.getName());
101 } else {
102 checkMBean(mbs, MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE
103 + ",name=" + m.getName());
104 num_mgrs++;
105 }
106 }
107
108 List gcs = ManagementFactory.getGarbageCollectorMXBeans();
109 for (ListIterator iter = gcs.listIterator(); iter.hasNext(); ) {
110 GarbageCollectorMXBean gc = (GarbageCollectorMXBean) iter.next();
111 checkMBean(mbs, GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE
112 + ",name=" + gc.getName());
113 }
114
115 // Check the number of memory managers and garbage collectors in the mbs
116 set = mbs.queryNames(new ObjectName(MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE + ",*"), null);
117 if (set.size() != num_mgrs) {
118 throw new RuntimeException("Unexpected number of memory managers:" +
119 "MBeanServer has " + set.size() +
120 ". Expected = " + num_mgrs);
121 }
122
123 set = mbs.queryNames(new ObjectName(GARBAGE_COLLECTOR_MXBEAN_DOMAIN_TYPE + ",*"), null);
124 if (set.size() != gcs.size()) {
125 throw new RuntimeException("Unexpected number of garbage collectors:" +
126 "MBeanServer has " + set.size() +
127 ". Expected = " + gcs.size());
128 }
129 }
130 private static void checkPlatformMBeans(MBeanServer mbs) throws Exception {
131 checkMBean(mbs, LogManager.LOGGING_MXBEAN_NAME);
132 }
133
134 private static void printMBeans(MBeanServer mbs) throws Exception {
135 Set set = mbs.queryNames(null, null);
136 for (Iterator iter = set.iterator(); iter.hasNext(); ) {
137 System.out.println(iter.next());
138 }
139 }
140 }