1 /*
2 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2019, Twitter, Inc.
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
26 package gc.metaspace;
27
28 import jdk.test.lib.Platform;
29 import jdk.test.lib.process.ProcessTools;
30 import jdk.test.lib.process.OutputAnalyzer;
31 import java.util.ArrayList;
32 import java.util.List;
33
34 /* @test TestSizeTransitionsSerial
35 * @requires vm.gc.Serial
36 * @summary Tests that the metaspace size transition logging is done correctly.
37 * @library /test/lib
38 * @run driver gc.metaspace.TestSizeTransitions false -XX:+UseSerialGC
39 * @run driver gc.metaspace.TestSizeTransitions true -XX:+UseSerialGC
40 */
41
42 /* @test TestSizeTransitionsParallel
43 * @requires vm.gc.Parallel
44 * @summary Tests that the metaspace size transition logging is done correctly.
45 * @library /test/lib
46 * @run driver gc.metaspace.TestSizeTransitions false -XX:+UseParallelGC
47 * @run driver gc.metaspace.TestSizeTransitions true -XX:+UseParallelGC
48 */
49
50 /* @test TestSizeTransitionsG1
51 * @requires vm.gc.G1
52 * @summary Tests that the metaspace size transition logging is done correctly.
53 * @library /test/lib
54 * @run driver gc.metaspace.TestSizeTransitions false -XX:+UseG1GC
55 * @run driver gc.metaspace.TestSizeTransitions true -XX:+UseG1GC
56 */
57
58 public class TestSizeTransitions {
59 public static class Run {
60 public static void main(String... args) throws Exception {
61 System.out.println("Run started.");
62
63 // easiest way to generate a metaspace transition is to ask for a full GC
64 System.gc();
65
66 System.out.println("Run finished.");
67 }
68 }
69
70 // matches the log tags
71 // e.g., [0.043s][info][gc]
72 private static final String LOG_TAGS_REGEX = "(\\[.*\\])+ ";
73
74 // matches a size transition
75 // e.g., 177K(4864K)->177K(4864K)
76 private static final String SIZE_TRANSITION_REGEX = "\\d+K\\(\\d+K\\)->\\d+K\\(\\d+K\\)";
77
78 // matches -coops metaspace size transitions
79 private static final String NO_COMPRESSED_KLASS_POINTERS_REGEX =
80 String.format("^%s.* Metaspace: %s$",
81 LOG_TAGS_REGEX,
82 SIZE_TRANSITION_REGEX);
83
84 // matches +coops metaspace size transitions
85 private static final String COMPRESSED_KLASS_POINTERS_REGEX =
86 String.format("^%s.* Metaspace: %s NonClass: %s Class: %s$",
87 LOG_TAGS_REGEX,
88 SIZE_TRANSITION_REGEX,
89 SIZE_TRANSITION_REGEX,
90 SIZE_TRANSITION_REGEX);
91
92 public static void main(String... args) throws Exception {
93 // args: <use-coops> <gc-arg>
94 if (args.length != 2) {
95 throw new RuntimeException("wrong number of args: " + args.length);
96 }
97
98 final boolean hasCompressedKlassPointers = Platform.is64bit();
99 final boolean useCompressedKlassPointers = Boolean.parseBoolean(args[0]);
100 final String gcArg = args[1];
101
102 if (!hasCompressedKlassPointers && useCompressedKlassPointers) {
103 // No need to run this configuration.
104 System.out.println("Skipping test.");
105 return;
106 }
107
108 List<String> jvmArgs = new ArrayList<>();
109 if (hasCompressedKlassPointers) {
110 jvmArgs.add(useCompressedKlassPointers ? "-XX:+UseCompressedClassPointers" : "-XX:-UseCompressedClassPointers");
111 }
112 jvmArgs.add(gcArg);
113 jvmArgs.add("-Xmx256m");
114 jvmArgs.add("-Xlog:gc,gc+metaspace=info");
115 jvmArgs.add(TestSizeTransitions.Run.class.getName());
116
117 System.out.println("JVM args:");
118 for (String a : jvmArgs) {
119 System.out.println(" " + a);
120 }
121
122 final ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(jvmArgs);
123 final OutputAnalyzer output = new OutputAnalyzer(pb.start());
124 System.out.println(output.getStdout());
125 output.shouldHaveExitValue(0);
126
127 if (useCompressedKlassPointers) {
128 output.stdoutShouldMatch(COMPRESSED_KLASS_POINTERS_REGEX);
129 output.stdoutShouldNotMatch(NO_COMPRESSED_KLASS_POINTERS_REGEX);
130 } else {
131 output.stdoutShouldMatch(NO_COMPRESSED_KLASS_POINTERS_REGEX);
132 output.stdoutShouldNotMatch(COMPRESSED_KLASS_POINTERS_REGEX);
133 }
134 }
135 }