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.function.Predicate;
31 import java.util.regex.Pattern;
32 import java.util.regex.Matcher;
33
34 import jdk.test.lib.Asserts;
35 import jdk.test.lib.process.OutputAnalyzer;
36 import jdk.test.lib.process.ProcessTools;
37 import sun.hotspot.WhiteBox;
38
39 /*
40 * @test TestMetaSpaceLog
41 * @bug 8211123
42 * @summary Ensure that the Metaspace is updated in the log
43 * @requires vm.gc=="null"
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 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 testMetaSpaceUpdate("UseParallelGC");
64 testMetaSpaceUpdate("UseG1GC");
65 testMetaSpaceUpdate("UseConcMarkSweepGC");
66 testMetaSpaceUpdate("UseSerialGC");
67 }
68
69 private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) {
70 Predicate<String> collectedMetaSpace = line -> check(line);
71
72 // At least one metaspace line from GC should show GC being collected.
73 boolean foundCollectedMetaSpace = output.asLines().stream()
74 .filter(s -> s.contains("[gc,metaspace"))
75 .anyMatch(TestMetaSpaceLog::check);
76 Asserts.assertTrue(foundCollectedMetaSpace);
77 }
78
79 private static boolean check(String line) {
80 Matcher m = metaSpaceRegexp.matcher(line);
81 Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line);
82 long before = Long.parseLong(m.group(1));
83 long after = Long.parseLong(m.group(2));
84 return before > after;
85 }
86
87 private static void testMetaSpaceUpdate(String gcFlag) throws Exception {
88 // Propagate test.src for the jar file.
89 String testSrc= "-Dtest.src=" + System.getProperty("test.src", ".");
90
91 System.err.println("Testing with GC Flag: " + gcFlag);
92 ProcessBuilder pb =
93 ProcessTools.createJavaProcessBuilder(
94 "-XX:+" + gcFlag,
95 "-Xlog:gc*",
96 "-Xbootclasspath/a:.",
97 "-XX:+UnlockDiagnosticVMOptions",
98 "-XX:+WhiteBoxAPI",
99 "-Xmx1000M",
100 "-Xms1000M",
101 testSrc, StressMetaSpace.class.getName());
102
103 OutputAnalyzer output = null;
104 try {
105 output = new OutputAnalyzer(pb.start());
106 verifyContainsMetaSpaceUpdate(output);
107 } catch (Exception e) {
108 // For error diagnosis: print and throw.
109 e.printStackTrace();
110 output.reportDiagnosticSummary();
111 throw e;
112 }
113 }
114
115 static class StressMetaSpace {
116 private static URL[] urls = new URL[1];
117
118 static {
119 try {
120 File jarFile = new File(System.getProperty("test.src") + "/testcases.jar");
121 urls[0] = jarFile.toURI().toURL();
122 } catch (Exception e) {
123 e.printStackTrace();
124 }
125 }
126
127 public static void main(String args[]) {
128 WhiteBox wb = WhiteBox.getWhiteBox();
129 for(int i = 0; i < 10000; i++) {
130 loadClass(wb);
131 }
132 wb.fullGC();
133 }
134
135 public static void loadClass(WhiteBox wb) {
136 try {
137 URLClassLoader ucl = new URLClassLoader(urls);
138 Class.forName("case00", false, ucl);
139 } catch (Exception e) {
140 e.printStackTrace();
141 }
142 }
143 }
144 }