1 /*
2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2018, SAP and/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
22 * questions.
23 */
24
25 import jdk.test.lib.process.ProcessTools;
26 import jdk.test.lib.process.OutputAnalyzer;
27 import jdk.test.lib.JDKToolFinder;
28
29 /*
30 * @test
31 * @key metaspace jcmd
32 * @summary Test the VM.metaspace command
33 * @requires vm.gc != "Z"
34 * @library /test/lib
35 * @modules java.base/jdk.internal.misc
36 * java.management
37 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M -XX:+UseCompressedOops -XX:+UseCompressedClassPointers PrintMetaspaceDcmd with-compressed-class-space
38 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M -XX:-UseCompressedOops -XX:-UseCompressedClassPointers PrintMetaspaceDcmd without-compressed-class-space
39 */
40
41 public class PrintMetaspaceDcmd {
42
43 // Run jcmd VM.metaspace against a VM with CompressedClassPointers on.
44 // The report should detail Non-Class and Class portions separately.
45 private static void doTheTest(boolean usesCompressedClassSpace) throws Exception {
46 ProcessBuilder pb = new ProcessBuilder();
47 OutputAnalyzer output;
48 // Grab my own PID
49 String pid = Long.toString(ProcessTools.getProcessId());
50
51 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "basic"});
52 output = new OutputAnalyzer(pb.start());
53 output.shouldHaveExitValue(0);
54 if (usesCompressedClassSpace) {
55 output.shouldContain("Non-Class:");
56 output.shouldContain("Class:");
57 }
58 output.shouldContain("Virtual space:");
59 output.shouldContain("Chunk freelists:");
60
61
62 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace"});
63 output = new OutputAnalyzer(pb.start());
64 output.shouldHaveExitValue(0);
65 if (usesCompressedClassSpace) {
66 output.shouldContain("Non-Class:");
67 output.shouldContain("Class:");
68 }
69 output.shouldContain("Virtual space:");
70 output.shouldContain("Chunk freelist");
71 output.shouldContain("Waste");
72 output.shouldMatch("MaxMetaspaceSize:.*201.00.*MB");
73
74 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "show-loaders"});
75 output = new OutputAnalyzer(pb.start());
76 output.shouldHaveExitValue(0);
77 output.shouldMatch("CLD.*<bootstrap>");
78
79 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "by-chunktype"});
80 output = new OutputAnalyzer(pb.start());
81 output.shouldHaveExitValue(0);
82 output.shouldContain("specialized:");
83 output.shouldContain("small:");
84 output.shouldContain("medium:");
85 output.shouldContain("humongous:");
86
87 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vslist"});
88 output = new OutputAnalyzer(pb.start());
89 output.shouldHaveExitValue(0);
90 output.shouldContain("Virtual space list");
91 output.shouldMatch("node.*reserved.*committed.*used.*");
92
93 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vsmap"});
94 output = new OutputAnalyzer(pb.start());
95 output.shouldHaveExitValue(0);
96 output.shouldContain("Virtual space map:");
97 output.shouldContain("HHHHHHHHHHH");
98
99 // Test with different scales
100 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=G"});
101 output = new OutputAnalyzer(pb.start());
102 output.shouldHaveExitValue(0);
103 output.shouldMatch("MaxMetaspaceSize:.*0.2.*GB");
104
105 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=K"});
106 output = new OutputAnalyzer(pb.start());
107 output.shouldHaveExitValue(0);
108 output.shouldMatch("MaxMetaspaceSize:.*205824.00 KB");
109
110 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=1"});
111 output = new OutputAnalyzer(pb.start());
112 output.shouldHaveExitValue(0);
113 output.shouldMatch("MaxMetaspaceSize:.*210763776 bytes");
114 }
115
116 public static void main(String args[]) throws Exception {
117 boolean testForCompressedClassSpace = false;
118 if (args[0].equals("with-compressed-class-space")) {
119 testForCompressedClassSpace = true;
120 } else if (args[0].equals("without-compressed-class-space")) {
121 testForCompressedClassSpace = false;
122 } else {
123 throw new IllegalArgumentException("Invalid argument: " + args[0]);
124 }
125 doTheTest(testForCompressedClassSpace);
126 }
127 }