1 /*
2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 /**
25 * @test TestMemoryMXBeans
26 * @key gc
27 * @summary Test JMX memory beans
28 *
29 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx1g TestMemoryMXBeans -1 1024
30 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms1g -Xmx1g TestMemoryMXBeans 1024 1024
31 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms128m -Xmx1g TestMemoryMXBeans 128 1024
32 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms1g -Xmx1g -XX:ShenandoahUncommitDelay=0 TestMemoryMXBeans 1024 1024
33 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xms128m -Xmx1g -XX:ShenandoahUncommitDelay=0 TestMemoryMXBeans 128 1024
34 */
35
36 import java.lang.management.*;
37 import java.util.*;
38
39 public class TestMemoryMXBeans {
40
41 public static void main(String[] args) throws Exception {
42 if (args.length < 2) {
43 throw new IllegalStateException("Should provide expected heap sizes");
44 }
45
46 long initSize = 1L * Integer.parseInt(args[0]) * 1024 * 1024;
47 long maxSize = 1L * Integer.parseInt(args[1]) * 1024 * 1024;
48
49 // wait for GC to uncommit
50 Thread.sleep(1000);
51
52 testMemoryBean(initSize, maxSize);
53 }
54
55 public static void testMemoryBean(long initSize, long maxSize) {
56 MemoryMXBean memoryMXBean = ManagementFactory.getMemoryMXBean();
57 long heapInit = memoryMXBean.getHeapMemoryUsage().getInit();
58 long heapCommitted = memoryMXBean.getHeapMemoryUsage().getCommitted();
59 long heapMax = memoryMXBean.getHeapMemoryUsage().getMax();
60 long nonHeapInit = memoryMXBean.getNonHeapMemoryUsage().getInit();
61 long nonHeapCommitted = memoryMXBean.getNonHeapMemoryUsage().getCommitted();
62 long nonHeapMax = memoryMXBean.getNonHeapMemoryUsage().getMax();
63
64 if (initSize > 0 && heapInit != initSize) {
65 throw new IllegalStateException("Init heap size is wrong: " + heapInit + " vs " + initSize);
66 }
67 if (maxSize > 0 && heapMax != maxSize) {
68 throw new IllegalStateException("Max heap size is wrong: " + heapMax + " vs " + maxSize);
69 }
70 if (initSize > 0 && maxSize > 0 && initSize != maxSize && heapCommitted == heapMax) {
71 throw new IllegalStateException("Committed heap size is max: " + heapCommitted +
72 " (init: " + initSize + ", max: " + maxSize + ")");
73 }
74 if (initSize > 0 && maxSize > 0 && initSize == maxSize && heapCommitted != heapMax) {
75 throw new IllegalStateException("Committed heap size is not max: " + heapCommitted +
76 " (init: " + initSize + ", max: " + maxSize + ")");
77 }
78 if (initSize > 0 && heapCommitted < initSize) {
79 throw new IllegalStateException("Committed heap size is below min: " + heapCommitted +
80 " (init: " + initSize + ", max: " + maxSize + ")");
81 }
82 }
83 }