1 /*
2 * Copyright (c) 2018, 2020, 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 * @summary Test the VM.metaspace command
32 * @requires vm.gc != "Z" & vm.bits != "32"
33 * @library /test/lib
34 * @modules java.base/jdk.internal.misc
35 * java.management
36 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M -XX:+UseCompressedOops -XX:+UseCompressedClassPointers PrintMetaspaceDcmd with-compressed-class-space
37 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M -XX:-UseCompressedOops -XX:-UseCompressedClassPointers PrintMetaspaceDcmd without-compressed-class-space
38 */
39 /*
40 * @test
41 * @summary Test the VM.metaspace command
42 * @requires vm.gc != "Z" & vm.bits == "32"
43 * @library /test/lib
44 * @modules java.base/jdk.internal.misc
45 * java.management
46 * @run main/othervm -XX:MaxMetaspaceSize=201M -Xmx100M PrintMetaspaceDcmd without-compressed-class-space
47 */
48
49 public class PrintMetaspaceDcmd {
50
51 // Run jcmd VM.metaspace against a VM with CompressedClassPointers on.
52 // The report should detail Non-Class and Class portions separately.
53 private static void doTheTest(boolean usesCompressedClassSpace) throws Exception {
54 ProcessBuilder pb = new ProcessBuilder();
55 OutputAnalyzer output;
56 // Grab my own PID
57 String pid = Long.toString(ProcessTools.getProcessId());
58
59 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "basic"});
60 output = new OutputAnalyzer(pb.start());
61 output.shouldHaveExitValue(0);
62 if (usesCompressedClassSpace) {
63 output.shouldContain("Non-Class:");
64 output.shouldContain("Class:");
65 }
66 output.shouldContain("Virtual space:");
67 output.shouldContain("Chunk freelists:");
68 output.shouldMatch("MaxMetaspaceSize:.*201.00.*MB");
69
70 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace"});
71 output = new OutputAnalyzer(pb.start());
72 output.shouldHaveExitValue(0);
73 if (usesCompressedClassSpace) {
74 output.shouldContain("Non-Class:");
75 output.shouldContain("Class:");
76 }
77 output.shouldContain("Virtual space:");
78 output.shouldContain("Chunk freelist");
79 output.shouldContain("Waste");
80 output.shouldMatch("MaxMetaspaceSize:.*201.00.*MB");
81
82 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "show-loaders"});
83 output = new OutputAnalyzer(pb.start());
84 output.shouldHaveExitValue(0);
85 output.shouldMatch("CLD.*<bootstrap>");
86
87 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "by-chunktype"});
88 output = new OutputAnalyzer(pb.start());
89 output.shouldHaveExitValue(0);
90 output.shouldContain("specialized:");
91 output.shouldContain("small:");
92 output.shouldContain("medium:");
93 output.shouldContain("humongous:");
94
95 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vslist"});
96 output = new OutputAnalyzer(pb.start());
97 output.shouldHaveExitValue(0);
98 output.shouldContain("Virtual space list");
99 output.shouldMatch("node.*reserved.*committed.*used.*");
100
101 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "vsmap"});
102 output = new OutputAnalyzer(pb.start());
103 output.shouldHaveExitValue(0);
104 output.shouldContain("Virtual space map:");
105 output.shouldContain("HHHHHHHHHHH");
106
107 // Test with different scales
108 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=G"});
109 output = new OutputAnalyzer(pb.start());
110 output.shouldHaveExitValue(0);
111 output.shouldMatch("MaxMetaspaceSize:.*0.2.*GB");
112
113 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=K"});
114 output = new OutputAnalyzer(pb.start());
115 output.shouldHaveExitValue(0);
116 output.shouldMatch("MaxMetaspaceSize:.*205824.00 KB");
117
118 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.metaspace", "scale=1"});
119 output = new OutputAnalyzer(pb.start());
120 output.shouldHaveExitValue(0);
121 output.shouldMatch("MaxMetaspaceSize:.*210763776 bytes");
122 }
123
124 public static void main(String args[]) throws Exception {
125 boolean testForCompressedClassSpace = false;
126 if (args[0].equals("with-compressed-class-space")) {
127 testForCompressedClassSpace = true;
128 } else if (args[0].equals("without-compressed-class-space")) {
129 testForCompressedClassSpace = false;
130 } else {
131 throw new IllegalArgumentException("Invalid argument: " + args[0]);
132 }
133 doTheTest(testForCompressedClassSpace);
134 }
135 }