1 /*
2 * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2018, Google 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 package gc.logging;
26
27 import java.io.File;
28 import java.net.URL;
29 import java.net.URLClassLoader;
30 import java.util.regex.Pattern;
31 import java.util.regex.Matcher;
32
33 import jdk.test.lib.Asserts;
34 import jdk.test.lib.process.OutputAnalyzer;
35 import jdk.test.lib.process.ProcessTools;
36 import jtreg.SkippedException;
37 import sun.hotspot.gc.GC;
38 import sun.hotspot.WhiteBox;
39
40 /*
41 * @test TestMetaSpaceLog
42 * @bug 8211123
43 * @summary Ensure that the Metaspace is updated in the log
44 * @key gc
45 * @library /test/lib
46 * @modules java.base/jdk.internal.misc
47 * java.management
48 *
49 * @compile TestMetaSpaceLog.java
50 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
51 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI gc.logging.TestMetaSpaceLog
52 */
53
54 public class TestMetaSpaceLog {
55 private static Pattern metaSpaceRegexp;
56
57 static {
58 // Do this once here.
59 metaSpaceRegexp = Pattern.compile(".*Metaspace: ([0-9]+).*->([0-9]+).*");
60 }
61
62 public static void main(String[] args) throws Exception {
63 boolean noneGCSupported = true;
64
65 if (GC.Parallel.isSupported()) {
66 noneGCSupported = false;
67 testMetaSpaceUpdate("UseParallelGC");
68 }
69 if (GC.G1.isSupported()) {
70 noneGCSupported = false;
71 testMetaSpaceUpdate("UseG1GC");
72 }
73 if (GC.ConcMarkSweep.isSupported()) {
74 noneGCSupported = false;
75 testMetaSpaceUpdate("UseConcMarkSweepGC");
76 }
77 if (GC.Serial.isSupported()) {
78 noneGCSupported = false;
79 testMetaSpaceUpdate("UseSerialGC");
80 }
81 if (noneGCSupported) {
82 throw new SkippedException("Skipping test because none of Parallel/G1/ConcMarkSweep/Serial is supported.");
83 }
84 }
85
86 private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) {
87 // At least one metaspace line from GC should show GC being collected.
88 boolean foundCollectedMetaSpace = output.asLines().stream()
89 .filter(s -> s.contains("[gc,metaspace"))
90 .anyMatch(TestMetaSpaceLog::check);
91 Asserts.assertTrue(foundCollectedMetaSpace);
92 }
93
94 private static boolean check(String line) {
95 Matcher m = metaSpaceRegexp.matcher(line);
96 Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line);
97 long before = Long.parseLong(m.group(1));
98 long after = Long.parseLong(m.group(2));
99 return before > after;
100 }
101
102 private static void testMetaSpaceUpdate(String gcFlag) throws Exception {
103 // Propagate test.src for the jar file.
104 String testSrc= "-Dtest.src=" + System.getProperty("test.src", ".");
105
106 System.err.println("Testing with GC Flag: " + gcFlag);
107 ProcessBuilder pb =
108 ProcessTools.createJavaProcessBuilder(
109 "-XX:+" + gcFlag,
110 "-Xlog:gc*",
111 "-Xbootclasspath/a:.",
112 "-XX:+UnlockDiagnosticVMOptions",
113 "-XX:+WhiteBoxAPI",
114 "-Xmx1000M",
115 "-Xms1000M",
116 testSrc, StressMetaSpace.class.getName());
117
118 OutputAnalyzer output = null;
119 try {
120 output = new OutputAnalyzer(pb.start());
121 verifyContainsMetaSpaceUpdate(output);
122 } catch (Exception e) {
123 // For error diagnosis: print and throw.
124 e.printStackTrace();
125 output.reportDiagnosticSummary();
126 throw e;
127 }
128 }
129
130 static class StressMetaSpace {
131 private static URL[] urls = new URL[1];
132
133 static {
134 try {
135 File jarFile = new File(System.getProperty("test.src") + "/testcases.jar");
136 urls[0] = jarFile.toURI().toURL();
137 } catch (Exception e) {
138 e.printStackTrace();
139 }
140 }
141
142 public static void main(String args[]) {
143 WhiteBox wb = WhiteBox.getWhiteBox();
144 for(int i = 0; i < 10000; i++) {
145 loadClass(wb);
146 }
147 wb.fullGC();
148 }
149
150 public static void loadClass(WhiteBox wb) {
151 try {
152 URLClassLoader ucl = new URLClassLoader(urls);
153 Class.forName("case00", false, ucl);
154 } catch (Exception e) {
155 e.printStackTrace();
156 }
157 }
158 }
159 }