1 /*
2 * Copyright (c) 2014, 2017, 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 8048179 8027962 8069330 8076463 8150630 8160055 8177059
27 * @summary Ensure the output for a minor GC with G1
28 * includes the expected necessary messages.
29 * @key gc
30 * @requires vm.gc.G1
31 * @library /test/lib
32 * @modules java.base/jdk.internal.misc
33 * java.management
34 * @build sun.hotspot.WhiteBox
35 * @run main ClassFileInstaller sun.hotspot.WhiteBox
36 * @run main TestGCLogMessages
37 */
38
39 import jdk.test.lib.process.OutputAnalyzer;
40 import jdk.test.lib.process.ProcessTools;
41 import jdk.test.lib.Platform;
42
43 public class TestGCLogMessages {
44
45 private enum Level {
46 OFF(""),
47 INFO("info"),
48 DEBUG("debug"),
49 TRACE("trace");
50
51 private String logName;
52
53 Level(String logName) {
54 this.logName = logName;
55 }
56
57 public boolean lessThan(Level other) {
58 return this.compareTo(other) < 0;
59 }
60
61 public String toString() {
62 return logName;
63 }
64 }
65
66 private class LogMessageWithLevel {
67 String message;
68 Level level;
69
70 public LogMessageWithLevel(String message, Level level) {
71 this.message = message;
72 this.level = level;
73 }
74
75 public boolean isAvailable() {
76 return true;
77 }
78 };
79
80 private class LogMessageWithLevelC2OrJVMCIOnly extends LogMessageWithLevel {
81 public LogMessageWithLevelC2OrJVMCIOnly(String message, Level level) {
82 super(message, level);
83 }
84
85 public boolean isAvailable() {
86 return Platform.isGraal() || Platform.isServer();
87 }
88 }
89
90 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] {
91 new LogMessageWithLevel("Pre Evacuate Collection Set", Level.INFO),
92 new LogMessageWithLevel("Evacuate Collection Set", Level.INFO),
93 new LogMessageWithLevel("Post Evacuate Collection Set", Level.INFO),
94 new LogMessageWithLevel("Other", Level.INFO),
95
96 // Update RS
97 new LogMessageWithLevel("Scan HCC", Level.TRACE),
98 // Ext Root Scan
99 new LogMessageWithLevel("Thread Roots", Level.TRACE),
100 new LogMessageWithLevel("StringTable Roots", Level.TRACE),
101 new LogMessageWithLevel("Universe Roots", Level.TRACE),
102 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE),
103 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE),
104 new LogMessageWithLevel("FlatProfiler Roots", Level.TRACE),
105 new LogMessageWithLevel("Management Roots", Level.TRACE),
106 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE),
107 new LogMessageWithLevel("CLDG Roots", Level.TRACE),
108 new LogMessageWithLevel("JVMTI Roots", Level.TRACE),
109 new LogMessageWithLevel("SATB Filtering", Level.TRACE),
110 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE),
111 new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE),
112 new LogMessageWithLevel("Weak CLD Roots", Level.TRACE),
113 // Redirty Cards
114 new LogMessageWithLevel("Redirty Cards", Level.DEBUG),
115 new LogMessageWithLevel("Parallel Redirty", Level.TRACE),
116 new LogMessageWithLevel("Redirtied Cards", Level.TRACE),
117 // Misc Top-level
118 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG),
119 new LogMessageWithLevel("String Dedup Fixup", Level.DEBUG),
120 new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG),
121 // Free CSet
122 new LogMessageWithLevel("Free Collection Set", Level.DEBUG),
123 new LogMessageWithLevel("Free Collection Set Serial", Level.TRACE),
124 new LogMessageWithLevel("Young Free Collection Set", Level.TRACE),
125 new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE),
126 // Humongous Eager Reclaim
127 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG),
128 new LogMessageWithLevel("Humongous Register", Level.DEBUG),
129 // Preserve CM Referents
130 new LogMessageWithLevel("Preserve CM Refs", Level.DEBUG),
131 // Merge PSS
132 new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG),
133 // TLAB handling
134 new LogMessageWithLevel("Prepare TLABs", Level.DEBUG),
135 new LogMessageWithLevel("Resize TLABs", Level.DEBUG),
136
137 new LogMessageWithLevelC2OrJVMCIOnly("DerivedPointerTable Update", Level.DEBUG),
138 new LogMessageWithLevel("Start New Collection Set", Level.DEBUG),
139 };
140
141 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception {
142 for (LogMessageWithLevel l : messages) {
143 if (level.lessThan(l.level) || !l.isAvailable()) {
144 output.shouldNotContain(l.message);
145 } else {
146 output.shouldMatch("\\[" + l.level + ".*" + l.message);
147 }
148 }
149 }
150
151 public static void main(String[] args) throws Exception {
152 new TestGCLogMessages().testNormalLogs();
153 new TestGCLogMessages().testWithToSpaceExhaustionLogs();
154 new TestGCLogMessages().testWithInitialMark();
155 }
156
157 private void testNormalLogs() throws Exception {
158
159 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
160 "-Xmx10M",
161 GCTest.class.getName());
162
163 OutputAnalyzer output = new OutputAnalyzer(pb.start());
164 checkMessagesAtLevel(output, allLogMessages, Level.OFF);
165 output.shouldHaveExitValue(0);
166
167 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
168 "-XX:+UseStringDeduplication",
169 "-Xmx10M",
170 "-Xlog:gc+phases=debug",
171 GCTest.class.getName());
172
173 output = new OutputAnalyzer(pb.start());
174 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG);
175
176 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
177 "-XX:+UseStringDeduplication",
178 "-Xmx10M",
179 "-Xlog:gc+phases=trace",
180 GCTest.class.getName());
181
182 output = new OutputAnalyzer(pb.start());
183 checkMessagesAtLevel(output, allLogMessages, Level.TRACE);
184 output.shouldHaveExitValue(0);
185 }
186
187 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] {
188 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG),
189 new LogMessageWithLevel("Recalculate Used", Level.TRACE),
190 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE),
191 new LogMessageWithLevel("Restore RemSet", Level.TRACE),
192 };
193
194 private void testWithToSpaceExhaustionLogs() throws Exception {
195 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
196 "-Xmx32M",
197 "-Xmn16M",
198 "-Xlog:gc+phases=debug",
199 GCTestWithToSpaceExhaustion.class.getName());
200
201 OutputAnalyzer output = new OutputAnalyzer(pb.start());
202 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG);
203 output.shouldHaveExitValue(0);
204
205 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
206 "-Xmx32M",
207 "-Xmn16M",
208 "-Xlog:gc+phases=trace",
209 GCTestWithToSpaceExhaustion.class.getName());
210
211 output = new OutputAnalyzer(pb.start());
212 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE);
213 output.shouldHaveExitValue(0);
214 }
215
216 private void testWithInitialMark() throws Exception {
217 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
218 "-Xmx10M",
219 "-Xbootclasspath/a:.",
220 "-Xlog:gc*=debug",
221 "-XX:+UnlockDiagnosticVMOptions",
222 "-XX:+WhiteBoxAPI",
223 GCTestWithInitialMark.class.getName());
224
225 OutputAnalyzer output = new OutputAnalyzer(pb.start());
226 output.shouldContain("Clear Claimed Marks");
227 output.shouldHaveExitValue(0);
228 }
229
230 static class GCTest {
231 private static byte[] garbage;
232 public static void main(String [] args) {
233 System.out.println("Creating garbage");
234 // create 128MB of garbage. This should result in at least one GC
235 for (int i = 0; i < 1024; i++) {
236 garbage = new byte[128 * 1024];
237 }
238 System.out.println("Done");
239 }
240 }
241
242 static class GCTestWithToSpaceExhaustion {
243 private static byte[] garbage;
244 private static byte[] largeObject;
245 public static void main(String [] args) {
246 largeObject = new byte[16*1024*1024];
247 System.out.println("Creating garbage");
248 // create 128MB of garbage. This should result in at least one GC,
249 // some of them with to-space exhaustion.
250 for (int i = 0; i < 1024; i++) {
251 garbage = new byte[128 * 1024];
252 }
253 System.out.println("Done");
254 }
255 }
256
257 static class GCTestWithInitialMark {
258 public static void main(String [] args) {
259 sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox();
260 WB.g1StartConcMarkCycle();
261 }
262 }
263
264 }
265