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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
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 8027962
27 * @summary Ensure that the PrintGCDetails output for a minor GC with G1
28 * includes the expected necessary messages.
29 * @key gc
30 * @library /testlibrary
31 */
32
33 import com.oracle.java.testlibrary.ProcessTools;
34 import com.oracle.java.testlibrary.OutputAnalyzer;
35
36 public class TestGCLogMessages {
37
38 private enum Level {
39 OFF, FINER, FINEST;
40 public boolean lessOrEqualTo(Level other) {
41 return this.compareTo(other) < 0;
42 }
43 }
44
45 private class LogMessageWithLevel {
46 String message;
47 Level level;
48
49 public LogMessageWithLevel(String message, Level level) {
50 this.message = message;
51 this.level = level;
52 }
53 };
54
55 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] {
56 // Ext Root Scan
57 new LogMessageWithLevel("Thread Roots (ms)", Level.FINEST),
58 new LogMessageWithLevel("StringTable Roots (ms)", Level.FINEST),
59 new LogMessageWithLevel("Universe Roots (ms)", Level.FINEST),
60 new LogMessageWithLevel("JNI Handles Roots (ms)", Level.FINEST),
61 new LogMessageWithLevel("ObjectSynchronizer Roots (ms)", Level.FINEST),
62 new LogMessageWithLevel("FlatProfiler Roots", Level.FINEST),
63 new LogMessageWithLevel("Management Roots", Level.FINEST),
64 new LogMessageWithLevel("SystemDictionary Roots", Level.FINEST),
65 new LogMessageWithLevel("CLDG Roots", Level.FINEST),
66 new LogMessageWithLevel("JVMTI Roots", Level.FINEST),
67 new LogMessageWithLevel("CodeCache Roots", Level.FINEST),
68 new LogMessageWithLevel("SATB Filtering", Level.FINEST),
69 new LogMessageWithLevel("CM RefProcessor Roots", Level.FINEST),
70 new LogMessageWithLevel("Wait For Strong CLD", Level.FINEST),
71 new LogMessageWithLevel("Weak CLD Roots", Level.FINEST),
72 // Redirty Cards
73 new LogMessageWithLevel("Redirty Cards", Level.FINER),
74 new LogMessageWithLevel("Parallel Redirty", Level.FINEST),
75 new LogMessageWithLevel("Redirtied Cards", Level.FINEST),
76 // Misc Top-level
77 new LogMessageWithLevel("Code Root Purge", Level.FINER),
78 new LogMessageWithLevel("String Dedup Fixup", Level.FINER),
79 // Free CSet
80 new LogMessageWithLevel("Young Free CSet", Level.FINEST),
81 new LogMessageWithLevel("Non-Young Free CSet", Level.FINEST),
82 // Humongous Eager Reclaim
83 new LogMessageWithLevel("Humongous Reclaim", Level.FINER),
84 };
85
86 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception {
87 for (LogMessageWithLevel l : messages) {
88 if (level.lessOrEqualTo(l.level)) {
89 output.shouldNotContain(l.message);
90 } else {
91 output.shouldContain(l.message);
92 }
93 }
94 }
95
96 public static void main(String[] args) throws Exception {
97 new TestGCLogMessages().testNormalLogs();
98 new TestGCLogMessages().testWithToSpaceExhaustionLogs();
99 }
100
101 private void testNormalLogs() throws Exception {
102
103 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
104 "-Xmx10M",
105 GCTest.class.getName());
106
107 OutputAnalyzer output = new OutputAnalyzer(pb.start());
108 checkMessagesAtLevel(output, allLogMessages, Level.OFF);
109 output.shouldHaveExitValue(0);
110
111 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
112 "-XX:+UseStringDeduplication",
113 "-Xmx10M",
114 "-XX:+PrintGCDetails",
115 GCTest.class.getName());
116
117 output = new OutputAnalyzer(pb.start());
118 checkMessagesAtLevel(output, allLogMessages, Level.FINER);
119
120 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
121 "-XX:+UseStringDeduplication",
122 "-Xmx10M",
123 "-XX:+PrintGCDetails",
124 "-XX:+UnlockExperimentalVMOptions",
125 "-XX:G1LogLevel=finest",
126 GCTest.class.getName());
127
128 output = new OutputAnalyzer(pb.start());
129 checkMessagesAtLevel(output, allLogMessages, Level.FINEST);
130 output.shouldHaveExitValue(0);
131 }
132
133 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] {
134 new LogMessageWithLevel("Evacuation Failure", Level.FINER),
135 new LogMessageWithLevel("Recalculate Used", Level.FINEST),
136 new LogMessageWithLevel("Remove Self Forwards", Level.FINEST),
137 new LogMessageWithLevel("Restore RemSet", Level.FINEST),
138 };
139
140 private void testWithToSpaceExhaustionLogs() throws Exception {
141 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
142 "-Xmx32M",
143 "-Xmn16M",
144 "-XX:+PrintGCDetails",
145 GCTestWithToSpaceExhaustion.class.getName());
146
147 OutputAnalyzer output = new OutputAnalyzer(pb.start());
148 checkMessagesAtLevel(output, exhFailureMessages, Level.FINER);
149 output.shouldHaveExitValue(0);
150
151 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
152 "-Xmx32M",
153 "-Xmn16M",
154 "-XX:+PrintGCDetails",
155 "-XX:+UnlockExperimentalVMOptions",
156 "-XX:G1LogLevel=finest",
157 GCTestWithToSpaceExhaustion.class.getName());
158
159 output = new OutputAnalyzer(pb.start());
160 checkMessagesAtLevel(output, exhFailureMessages, Level.FINEST);
161 output.shouldHaveExitValue(0);
162 }
163
164 static class GCTest {
165 private static byte[] garbage;
166 public static void main(String [] args) {
167 System.out.println("Creating garbage");
168 // create 128MB of garbage. This should result in at least one GC
169 for (int i = 0; i < 1024; i++) {
170 garbage = new byte[128 * 1024];
171 }
172 System.out.println("Done");
173 }
174 }
175
176 static class GCTestWithToSpaceExhaustion {
177 private static byte[] garbage;
178 private static byte[] largeObject;
179 public static void main(String [] args) {
180 largeObject = new byte[16*1024*1024];
181 System.out.println("Creating garbage");
182 // create 128MB of garbage. This should result in at least one GC,
183 // some of them with to-space exhaustion.
184 for (int i = 0; i < 1024; i++) {
185 garbage = new byte[128 * 1024];
186 }
187 System.out.println("Done");
188 }
189 }
190 }
191