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 // Merge Heap Roots 99 new LogMessageWithLevel("Merge Heap Roots", Level.INFO), 100 new LogMessageWithLevel("Prepare Merge Heap Roots", Level.DEBUG), 101 new LogMessageWithLevel("Eager Reclaim", Level.DEBUG), 102 new LogMessageWithLevel("Remembered Sets", Level.DEBUG), 103 new LogMessageWithLevel("Merged Sparse", Level.DEBUG), 104 new LogMessageWithLevel("Merged Fine", Level.DEBUG), 105 new LogMessageWithLevel("Merged Coarse", Level.DEBUG), 106 new LogMessageWithLevel("Hot Card Cache", Level.DEBUG), 107 new LogMessageWithLevel("Log Buffers", Level.DEBUG), 108 new LogMessageWithLevel("Dirty Cards", Level.DEBUG), 109 new LogMessageWithLevel("Skipped Cards", Level.DEBUG), 110 // Scan Heap Roots 111 new LogMessageWithLevel("Scan Heap Roots", Level.DEBUG), 112 new LogMessageWithLevel("Scanned Cards", Level.DEBUG), 113 new LogMessageWithLevel("Scanned Blocks", Level.DEBUG), 114 new LogMessageWithLevel("Claimed Chunks", Level.DEBUG), 115 // Code Roots Scan 116 new LogMessageWithLevel("Code Root Scan", Level.DEBUG), 117 // Object Copy 118 new LogMessageWithLevel("Object Copy", Level.DEBUG), 119 new LogMessageWithLevel("LAB Waste", Level.DEBUG), 120 new LogMessageWithLevel("LAB Undo Waste", Level.DEBUG), 121 // Ext Root Scan 122 new LogMessageWithLevel("Thread Roots", Level.TRACE), 123 new LogMessageWithLevel("Universe Roots", Level.TRACE), 124 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE), 125 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE), 126 new LogMessageWithLevel("Management Roots", Level.TRACE), 127 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE), 128 new LogMessageWithLevel("CLDG Roots", Level.TRACE), 129 new LogMessageWithLevel("JVMTI Roots", Level.TRACE), 130 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE), 131 new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE), 132 new LogMessageWithLevel("Weak CLD Roots", Level.TRACE), 133 // Redirty Cards 134 new LogMessageWithLevel("Redirty Cards", Level.DEBUG), 135 new LogMessageWithLevel("Parallel Redirty", Level.TRACE), 136 new LogMessageWithLevel("Redirtied Cards", Level.TRACE), 137 // Misc Top-level 138 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG), 139 new LogMessageWithLevel("String Deduplication", Level.DEBUG), 140 new LogMessageWithLevel("Queue Fixup", Level.DEBUG), 141 new LogMessageWithLevel("Table Fixup", Level.DEBUG), 142 new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG), 143 new LogMessageWithLevel("Region Register", Level.DEBUG), 144 new LogMessageWithLevel("Prepare Heap Roots", Level.DEBUG), 145 // Free CSet 146 new LogMessageWithLevel("Free Collection Set", Level.DEBUG), 147 new LogMessageWithLevel("Free Collection Set Serial", Level.TRACE), 148 new LogMessageWithLevel("Young Free Collection Set", Level.TRACE), 149 new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE), 150 // Humongous Eager Reclaim 151 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG), 152 // Merge PSS 153 new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG), 154 // TLAB handling 155 new LogMessageWithLevel("Prepare TLABs", Level.DEBUG), 156 new LogMessageWithLevel("Resize TLABs", Level.DEBUG), 157 // Reference Processing 158 new LogMessageWithLevel("Reference Processing", Level.DEBUG), 159 // VM internal reference processing 160 new LogMessageWithLevel("Weak Processing", Level.DEBUG), 161 new LogMessageWithLevel("JNI weak", Level.DEBUG), 162 new LogMessageWithLevel("StringTable weak", Level.DEBUG), 163 new LogMessageWithLevel("ResolvedMethodTable weak", Level.DEBUG), 164 new LogMessageWithLevel("VM weak", Level.DEBUG), 165 166 new LogMessageWithLevelC2OrJVMCIOnly("DerivedPointerTable Update", Level.DEBUG), 167 new LogMessageWithLevel("Start New Collection Set", Level.DEBUG), 168 }; 169 170 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception { 171 for (LogMessageWithLevel l : messages) { 172 if (level.lessThan(l.level) || !l.isAvailable()) { 173 output.shouldNotContain(l.message); 174 } else { 175 output.shouldMatch("\\[" + l.level + ".*" + l.message); 176 } 177 } 178 } 179 180 public static void main(String[] args) throws Exception { 181 new TestGCLogMessages().testNormalLogs(); 182 new TestGCLogMessages().testWithToSpaceExhaustionLogs(); 183 new TestGCLogMessages().testWithInitialMark(); 184 new TestGCLogMessages().testExpandHeap(); 185 } 186 187 private void testNormalLogs() throws Exception { 188 189 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 190 "-Xmx10M", 191 GCTest.class.getName()); 192 193 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 194 checkMessagesAtLevel(output, allLogMessages, Level.OFF); 195 output.shouldHaveExitValue(0); 196 197 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 198 "-XX:+UseStringDeduplication", 199 "-Xmx10M", 200 "-Xlog:gc+phases=debug", 201 GCTest.class.getName()); 202 203 output = new OutputAnalyzer(pb.start()); 204 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG); 205 206 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 207 "-XX:+UseStringDeduplication", 208 "-Xmx10M", 209 "-Xlog:gc+phases=trace", 210 GCTest.class.getName()); 211 212 output = new OutputAnalyzer(pb.start()); 213 checkMessagesAtLevel(output, allLogMessages, Level.TRACE); 214 output.shouldHaveExitValue(0); 215 } 216 217 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] { 218 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG), 219 new LogMessageWithLevel("Recalculate Used", Level.TRACE), 220 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE), 221 }; 222 223 private void testWithToSpaceExhaustionLogs() throws Exception { 224 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 225 "-Xmx32M", 226 "-Xmn16M", 227 "-Xlog:gc+phases=debug", 228 GCTestWithToSpaceExhaustion.class.getName()); 229 230 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 231 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG); 232 output.shouldHaveExitValue(0); 233 234 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 235 "-Xmx32M", 236 "-Xmn16M", 237 "-Xlog:gc+phases=trace", 238 GCTestWithToSpaceExhaustion.class.getName()); 239 240 output = new OutputAnalyzer(pb.start()); 241 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE); 242 output.shouldHaveExitValue(0); 243 } 244 245 private void testWithInitialMark() throws Exception { 246 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 247 "-Xmx10M", 248 "-Xbootclasspath/a:.", 249 "-Xlog:gc*=debug", 250 "-XX:+UnlockDiagnosticVMOptions", 251 "-XX:+WhiteBoxAPI", 252 GCTestWithInitialMark.class.getName()); 253 254 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 255 output.shouldContain("Clear Claimed Marks"); 256 output.shouldHaveExitValue(0); 257 } 258 259 private void testExpandHeap() throws Exception { 260 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 261 "-Xmx10M", 262 "-Xbootclasspath/a:.", 263 "-Xlog:gc+ergo+heap=debug", 264 "-XX:+UnlockDiagnosticVMOptions", 265 "-XX:+WhiteBoxAPI", 266 GCTest.class.getName()); 267 268 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 269 output.shouldContain("Expand the heap. requested expansion amount: "); 270 output.shouldContain("B expansion amount: "); 271 output.shouldHaveExitValue(0); 272 } 273 274 275 static class GCTest { 276 private static byte[] garbage; 277 public static void main(String [] args) { 278 System.out.println("Creating garbage"); 279 // create 128MB of garbage. This should result in at least one GC 280 for (int i = 0; i < 1024; i++) { 281 garbage = new byte[128 * 1024]; 282 } 283 System.out.println("Done"); 284 } 285 } 286 287 static class GCTestWithToSpaceExhaustion { 288 private static byte[] garbage; 289 private static byte[] largeObject; 290 public static void main(String [] args) { 291 largeObject = new byte[16*1024*1024]; 292 System.out.println("Creating garbage"); 293 // create 128MB of garbage. This should result in at least one GC, 294 // some of them with to-space exhaustion. 295 for (int i = 0; i < 1024; i++) { 296 garbage = new byte[128 * 1024]; 297 } 298 System.out.println("Done"); 299 } 300 } 301 302 static class GCTestWithInitialMark { 303 public static void main(String [] args) { 304 sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox(); 305 WB.g1StartConcMarkCycle(); 306 } 307 } 308 309 } 310