1 /* 2 * Copyright (c) 2014, 2019, 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 package gc.g1; 25 26 /* 27 * @test TestGCLogMessages 28 * @bug 8035406 8027295 8035398 8019342 8027959 8048179 8027962 8069330 8076463 8150630 8160055 8177059 8166191 29 * @summary Ensure the output for a minor GC with G1 30 * includes the expected necessary messages. 31 * @key gc 32 * @requires vm.gc.G1 33 * @library /test/lib 34 * @modules java.base/jdk.internal.misc 35 * java.management 36 * @build sun.hotspot.WhiteBox 37 * @run driver ClassFileInstaller sun.hotspot.WhiteBox 38 * @run main gc.g1.TestGCLogMessages 39 */ 40 41 import jdk.test.lib.process.OutputAnalyzer; 42 import jdk.test.lib.process.ProcessTools; 43 import jdk.test.lib.Platform; 44 45 public class TestGCLogMessages { 46 47 private enum Level { 48 OFF(""), 49 INFO("info"), 50 DEBUG("debug"), 51 TRACE("trace"); 52 53 private String logName; 54 55 Level(String logName) { 56 this.logName = logName; 57 } 58 59 public boolean lessThan(Level other) { 60 return this.compareTo(other) < 0; 61 } 62 63 public String toString() { 64 return logName; 65 } 66 } 67 68 private class LogMessageWithLevel { 69 String message; 70 Level level; 71 72 public LogMessageWithLevel(String message, Level level) { 73 this.message = message; 74 this.level = level; 75 } 76 77 public boolean isAvailable() { 78 return true; 79 } 80 }; 81 82 private class LogMessageWithLevelC2OrJVMCIOnly extends LogMessageWithLevel { 83 public LogMessageWithLevelC2OrJVMCIOnly(String message, Level level) { 84 super(message, level); 85 } 86 87 public boolean isAvailable() { 88 return Platform.isGraal() || Platform.isServer(); 89 } 90 } 91 92 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] { 93 new LogMessageWithLevel("Pre Evacuate Collection Set", Level.INFO), 94 new LogMessageWithLevel("Evacuate Collection Set", Level.INFO), 95 new LogMessageWithLevel("Post Evacuate Collection Set", Level.INFO), 96 new LogMessageWithLevel("Other", Level.INFO), 97 98 // Update RS 99 new LogMessageWithLevel("Update RS", Level.DEBUG), 100 new LogMessageWithLevel("Processed Buffers", Level.DEBUG), 101 new LogMessageWithLevel("Scanned Cards", Level.DEBUG), 102 new LogMessageWithLevel("Skipped Cards", Level.DEBUG), 103 new LogMessageWithLevel("Scan HCC", Level.DEBUG), 104 // Scan RS 105 new LogMessageWithLevel("Scan RS", Level.DEBUG), 106 new LogMessageWithLevel("Scanned Cards", Level.DEBUG), 107 new LogMessageWithLevel("Claimed Cards", Level.DEBUG), 108 new LogMessageWithLevel("Skipped Cards", Level.DEBUG), 109 // Object Copy 110 new LogMessageWithLevel("Object Copy", Level.DEBUG), 111 new LogMessageWithLevel("Scanned Cards", Level.DEBUG), 112 new LogMessageWithLevel("Claimed Cards", Level.DEBUG), 113 // Ext Root Scan 114 new LogMessageWithLevel("Thread Roots", Level.TRACE), 115 new LogMessageWithLevel("Universe Roots", Level.TRACE), 116 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE), 117 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE), 118 new LogMessageWithLevel("Management Roots", Level.TRACE), 119 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE), 120 new LogMessageWithLevel("CLDG Roots", Level.TRACE), 121 new LogMessageWithLevel("JVMTI Roots", Level.TRACE), 122 new LogMessageWithLevel("SATB Filtering", Level.TRACE), 123 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE), 124 new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE), 125 new LogMessageWithLevel("Weak CLD Roots", Level.TRACE), 126 // Redirty Cards 127 new LogMessageWithLevel("Redirty Cards", Level.DEBUG), 128 new LogMessageWithLevel("Parallel Redirty", Level.TRACE), 129 new LogMessageWithLevel("Redirtied Cards", Level.TRACE), 130 // Misc Top-level 131 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG), 132 new LogMessageWithLevel("String Deduplication", Level.DEBUG), 133 new LogMessageWithLevel("Queue Fixup", Level.DEBUG), 134 new LogMessageWithLevel("Table Fixup", Level.DEBUG), 135 new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG), 136 // Free CSet 137 new LogMessageWithLevel("Free Collection Set", Level.DEBUG), 138 new LogMessageWithLevel("Free Collection Set Serial", Level.TRACE), 139 new LogMessageWithLevel("Young Free Collection Set", Level.TRACE), 140 new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE), 141 // Humongous Eager Reclaim 142 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG), 143 new LogMessageWithLevel("Humongous Register", Level.DEBUG), 144 // Merge PSS 145 new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG), 146 // TLAB handling 147 new LogMessageWithLevel("Prepare TLABs", Level.DEBUG), 148 new LogMessageWithLevel("Resize TLABs", Level.DEBUG), 149 // Reference Processing 150 new LogMessageWithLevel("Reference Processing", Level.DEBUG), 151 // VM internal reference processing 152 new LogMessageWithLevel("Weak Processing", Level.DEBUG), 153 new LogMessageWithLevel("JNI weak processing", Level.DEBUG), 154 new LogMessageWithLevel("StringTable weak processing", Level.DEBUG), 155 new LogMessageWithLevel("VM weak processing", Level.DEBUG), 156 157 new LogMessageWithLevelC2OrJVMCIOnly("DerivedPointerTable Update", Level.DEBUG), 158 new LogMessageWithLevel("Start New Collection Set", Level.DEBUG), 159 }; 160 161 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception { 162 for (LogMessageWithLevel l : messages) { 163 if (level.lessThan(l.level) || !l.isAvailable()) { 164 output.shouldNotContain(l.message); 165 } else { 166 output.shouldMatch("\\[" + l.level + ".*" + l.message); 167 } 168 } 169 } 170 171 public static void main(String[] args) throws Exception { 172 new TestGCLogMessages().testNormalLogs(); 173 new TestGCLogMessages().testWithToSpaceExhaustionLogs(); 174 new TestGCLogMessages().testWithInitialMark(); 175 new TestGCLogMessages().testExpandHeap(); 176 } 177 178 private void testNormalLogs() throws Exception { 179 180 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 181 "-Xmx10M", 182 GCTest.class.getName()); 183 184 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 185 checkMessagesAtLevel(output, allLogMessages, Level.OFF); 186 output.shouldHaveExitValue(0); 187 188 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 189 "-XX:+UseStringDeduplication", 190 "-Xmx10M", 191 "-Xlog:gc+phases=debug", 192 GCTest.class.getName()); 193 194 output = new OutputAnalyzer(pb.start()); 195 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG); 196 197 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 198 "-XX:+UseStringDeduplication", 199 "-Xmx10M", 200 "-Xlog:gc+phases=trace", 201 GCTest.class.getName()); 202 203 output = new OutputAnalyzer(pb.start()); 204 checkMessagesAtLevel(output, allLogMessages, Level.TRACE); 205 output.shouldHaveExitValue(0); 206 } 207 208 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] { 209 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG), 210 new LogMessageWithLevel("Recalculate Used", Level.TRACE), 211 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE), 212 }; 213 214 private void testWithToSpaceExhaustionLogs() throws Exception { 215 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 216 "-Xmx32M", 217 "-Xmn16M", 218 "-Xlog:gc+phases=debug", 219 GCTestWithToSpaceExhaustion.class.getName()); 220 221 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 222 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG); 223 output.shouldHaveExitValue(0); 224 225 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 226 "-Xmx32M", 227 "-Xmn16M", 228 "-Xlog:gc+phases=trace", 229 GCTestWithToSpaceExhaustion.class.getName()); 230 231 output = new OutputAnalyzer(pb.start()); 232 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE); 233 output.shouldHaveExitValue(0); 234 } 235 236 private void testWithInitialMark() throws Exception { 237 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 238 "-Xmx10M", 239 "-Xbootclasspath/a:.", 240 "-Xlog:gc*=debug", 241 "-XX:+UnlockDiagnosticVMOptions", 242 "-XX:+WhiteBoxAPI", 243 GCTestWithInitialMark.class.getName()); 244 245 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 246 output.shouldContain("Clear Claimed Marks"); 247 output.shouldHaveExitValue(0); 248 } 249 250 private void testExpandHeap() throws Exception { 251 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 252 "-Xmx10M", 253 "-Xbootclasspath/a:.", 254 "-Xlog:gc+ergo+heap=debug", 255 "-XX:+UnlockDiagnosticVMOptions", 256 "-XX:+WhiteBoxAPI", 257 GCTest.class.getName()); 258 259 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 260 output.shouldContain("Expand the heap. requested expansion amount: "); 261 output.shouldContain("B expansion amount: "); 262 output.shouldHaveExitValue(0); 263 } 264 265 266 static class GCTest { 267 private static byte[] garbage; 268 public static void main(String [] args) { 269 System.out.println("Creating garbage"); 270 // create 128MB of garbage. This should result in at least one GC 271 for (int i = 0; i < 1024; i++) { 272 garbage = new byte[128 * 1024]; 273 } 274 System.out.println("Done"); 275 } 276 } 277 278 static class GCTestWithToSpaceExhaustion { 279 private static byte[] garbage; 280 private static byte[] largeObject; 281 public static void main(String [] args) { 282 largeObject = new byte[16*1024*1024]; 283 System.out.println("Creating garbage"); 284 // create 128MB of garbage. This should result in at least one GC, 285 // some of them with to-space exhaustion. 286 for (int i = 0; i < 1024; i++) { 287 garbage = new byte[128 * 1024]; 288 } 289 System.out.println("Done"); 290 } 291 } 292 293 static class GCTestWithInitialMark { 294 public static void main(String [] args) { 295 sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox(); 296 WB.g1StartConcMarkCycle(); 297 } 298 } 299 300 } 301