1 /*
2 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test TestGCLogMessages
26 * @bug 8035406 8027295 8035398 8019342 8027959 8048179 8027962 8069330
27 * @summary Ensure the output for a minor GC with G1
28 * includes the expected necessary messages.
29 * @key gc
30 * @library /testlibrary
31 * @modules java.base/sun.misc
32 * java.management
33 */
34
35 import jdk.test.lib.ProcessTools;
36 import jdk.test.lib.OutputAnalyzer;
37
38 public class TestGCLogMessages {
39
40 private enum Level {
41 OFF(""),
42 INFO("info"),
43 DEBUG("debug"),
44 TRACE("trace");
45
46 private String logName;
47
48 Level(String logName) {
49 this.logName = logName;
50 }
51
52 public boolean lessThan(Level other) {
53 return this.compareTo(other) < 0;
54 }
55
56 public String toString() {
57 return logName;
58 }
59 }
60
61 private class LogMessageWithLevel {
62 String message;
63 Level level;
64
65 public LogMessageWithLevel(String message, Level level) {
66 this.message = message;
67 this.level = level;
68 }
69 };
70
71 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] {
72 // Update RS
73 new LogMessageWithLevel("Scan HCC", Level.TRACE),
74 // Ext Root Scan
75 new LogMessageWithLevel("Thread Roots", Level.TRACE),
76 new LogMessageWithLevel("StringTable Roots", Level.TRACE),
77 new LogMessageWithLevel("Universe Roots", Level.TRACE),
78 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE),
79 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE),
80 new LogMessageWithLevel("FlatProfiler Roots", Level.TRACE),
81 new LogMessageWithLevel("Management Roots", Level.TRACE),
82 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE),
83 new LogMessageWithLevel("CLDG Roots", Level.TRACE),
84 new LogMessageWithLevel("JVMTI Roots", Level.TRACE),
85 new LogMessageWithLevel("SATB Filtering", Level.TRACE),
86 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE),
87 new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE),
88 new LogMessageWithLevel("Weak CLD Roots", Level.TRACE),
89 // Redirty Cards
90 new LogMessageWithLevel("Redirty Cards", Level.DEBUG),
91 new LogMessageWithLevel("Parallel Redirty", Level.TRACE),
92 new LogMessageWithLevel("Redirtied Cards", Level.TRACE),
93 // Misc Top-level
94 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG),
95 new LogMessageWithLevel("String Dedup Fixup", Level.INFO),
96 new LogMessageWithLevel("Expand Heap After Collection", Level.INFO),
97 // Free CSet
98 new LogMessageWithLevel("Young Free Collection Set", Level.DEBUG),
99 new LogMessageWithLevel("Non-Young Free Collection Set", Level.DEBUG),
100 // Humongous Eager Reclaim
101 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG),
102 new LogMessageWithLevel("Humongous Register", Level.DEBUG),
103 };
104
105 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception {
106 for (LogMessageWithLevel l : messages) {
107 if (level.lessThan(l.level)) {
108 output.shouldNotContain(l.message);
109 } else {
110 output.shouldMatch("\\[" + l.level + ".*" + l.message);
111 }
112 }
113 }
114
115 public static void main(String[] args) throws Exception {
116 new TestGCLogMessages().testNormalLogs();
117 new TestGCLogMessages().testWithToSpaceExhaustionLogs();
118 }
119
120 private void testNormalLogs() throws Exception {
121
122 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
123 "-Xmx10M",
124 GCTest.class.getName());
125
126 OutputAnalyzer output = new OutputAnalyzer(pb.start());
127 checkMessagesAtLevel(output, allLogMessages, Level.OFF);
128 output.shouldHaveExitValue(0);
129
130 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
131 "-XX:+UseStringDeduplication",
132 "-Xmx10M",
133 "-Xlog:gc+phases=debug",
134 GCTest.class.getName());
135
136 output = new OutputAnalyzer(pb.start());
137 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG);
138
139 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
140 "-XX:+UseStringDeduplication",
141 "-Xmx10M",
142 "-Xlog:gc+phases=trace",
143 GCTest.class.getName());
144
145 output = new OutputAnalyzer(pb.start());
146 checkMessagesAtLevel(output, allLogMessages, Level.TRACE);
147 output.shouldHaveExitValue(0);
148 }
149
150 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] {
151 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG),
152 new LogMessageWithLevel("Recalculate Used", Level.TRACE),
153 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE),
154 new LogMessageWithLevel("Restore RemSet", Level.TRACE),
155 };
156
157 private void testWithToSpaceExhaustionLogs() throws Exception {
158 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
159 "-Xmx32M",
160 "-Xmn16M",
161 "-Xlog:gc+phases=debug",
162 GCTestWithToSpaceExhaustion.class.getName());
163
164 OutputAnalyzer output = new OutputAnalyzer(pb.start());
165 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG);
166 output.shouldHaveExitValue(0);
167
168 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
169 "-Xmx32M",
170 "-Xmn16M",
171 "-Xlog:gc+phases=trace",
172 GCTestWithToSpaceExhaustion.class.getName());
173
174 output = new OutputAnalyzer(pb.start());
175 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE);
176 output.shouldHaveExitValue(0);
177 }
178
179 static class GCTest {
180 private static byte[] garbage;
181 public static void main(String [] args) {
182 System.out.println("Creating garbage");
183 // create 128MB of garbage. This should result in at least one GC
184 for (int i = 0; i < 1024; i++) {
185 garbage = new byte[128 * 1024];
186 }
187 System.out.println("Done");
188 }
189 }
190
191 static class GCTestWithToSpaceExhaustion {
192 private static byte[] garbage;
193 private static byte[] largeObject;
194 public static void main(String [] args) {
195 largeObject = new byte[16*1024*1024];
196 System.out.println("Creating garbage");
197 // create 128MB of garbage. This should result in at least one GC,
198 // some of them with to-space exhaustion.
199 for (int i = 0; i < 1024; i++) {
200 garbage = new byte[128 * 1024];
201 }
202 System.out.println("Done");
203 }
204 }
205 }
206