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 sun.hotspot.WhiteBox;
37
38 /*
39 * @test TestMetaSpaceLog
40 * @bug 8211123
41 * @summary Ensure that the Metaspace is updated in the log
42 * @requires vm.gc=="null"
43 * @key gc
44 * @library /test/lib
45 * @modules java.base/jdk.internal.misc
46 * java.management
47 *
48 * @compile TestMetaSpaceLog.java
49 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
50 * @run main gc.logging.TestMetaSpaceLog
51 */
52
53 public class TestMetaSpaceLog {
54 private static Pattern metaSpaceRegexp;
55
56 static {
57 // Do this once here.
58 metaSpaceRegexp = Pattern.compile(".*Metaspace: ([0-9]+).*->([0-9]+).*");
59 }
60
61 public static void main(String[] args) throws Exception {
62 testMetaSpaceUpdate("UseParallelGC");
63 testMetaSpaceUpdate("UseG1GC");
64 testMetaSpaceUpdate("UseConcMarkSweepGC");
65 testMetaSpaceUpdate("UseSerialGC");
66 }
67
68 private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) {
69 // At least one metaspace line from GC should show GC being collected.
70 boolean foundCollectedMetaSpace = output.asLines().stream()
71 .filter(s -> s.contains("[gc,metaspace"))
72 .anyMatch(TestMetaSpaceLog::check);
73 Asserts.assertTrue(foundCollectedMetaSpace);
74 }
75
76 private static boolean check(String line) {
77 Matcher m = metaSpaceRegexp.matcher(line);
78 Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line);
79 long before = Long.parseLong(m.group(1));
80 long after = Long.parseLong(m.group(2));
81 return before > after;
82 }
83
84 private static void testMetaSpaceUpdate(String gcFlag) throws Exception {
85 // Propagate test.src for the jar file.
86 String testSrc= "-Dtest.src=" + System.getProperty("test.src", ".");
87
88 System.err.println("Testing with GC Flag: " + gcFlag);
89 ProcessBuilder pb =
90 ProcessTools.createJavaProcessBuilder(
91 "-XX:+" + gcFlag,
92 "-Xlog:gc*",
93 "-Xbootclasspath/a:.",
94 "-XX:+UnlockDiagnosticVMOptions",
95 "-XX:+WhiteBoxAPI",
96 "-Xmx1000M",
97 "-Xms1000M",
98 testSrc, StressMetaSpace.class.getName());
99
100 OutputAnalyzer output = null;
101 try {
102 output = new OutputAnalyzer(pb.start());
103 verifyContainsMetaSpaceUpdate(output);
104 } catch (Exception e) {
105 // For error diagnosis: print and throw.
106 e.printStackTrace();
107 output.reportDiagnosticSummary();
108 throw e;
109 }
110 }
111
112 static class StressMetaSpace {
113 private static URL[] urls = new URL[1];
114
115 static {
116 try {
117 File jarFile = new File(System.getProperty("test.src") + "/testcases.jar");
118 urls[0] = jarFile.toURI().toURL();
119 } catch (Exception e) {
120 e.printStackTrace();
121 }
122 }
123
124 public static void main(String args[]) {
125 WhiteBox wb = WhiteBox.getWhiteBox();
126 for(int i = 0; i < 10000; i++) {
127 loadClass(wb);
128 }
129 wb.fullGC();
130 }
131
132 public static void loadClass(WhiteBox wb) {
133 try {
134 URLClassLoader ucl = new URLClassLoader(urls);
135 Class.forName("case00", false, ucl);
136 } catch (Exception e) {
137 e.printStackTrace();
138 }
139 }
140 }
141 }