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 8166191 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("Update RS", Level.DEBUG), 98 new LogMessageWithLevel("Processed Buffers", Level.DEBUG), 99 new LogMessageWithLevel("Scan HCC", Level.TRACE), 100 // Scan RS 101 new LogMessageWithLevel("Scan RS", Level.DEBUG), 102 new LogMessageWithLevel("Scanned Cards", Level.DEBUG), 103 new LogMessageWithLevel("Claimed Cards", Level.DEBUG), 104 new LogMessageWithLevel("Skipped Cards", Level.DEBUG), 105 // Ext Root Scan 106 new LogMessageWithLevel("Thread Roots", Level.TRACE), 107 new LogMessageWithLevel("StringTable Roots", Level.TRACE), 108 new LogMessageWithLevel("Universe Roots", Level.TRACE), 109 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE), 110 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE), 111 new LogMessageWithLevel("FlatProfiler Roots", Level.TRACE), 112 new LogMessageWithLevel("Management Roots", Level.TRACE), 113 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE), 114 new LogMessageWithLevel("CLDG Roots", Level.TRACE), 115 new LogMessageWithLevel("JVMTI Roots", Level.TRACE), 116 new LogMessageWithLevel("SATB Filtering", Level.TRACE), 117 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE), 118 new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE), 119 new LogMessageWithLevel("Weak CLD Roots", Level.TRACE), 120 // Redirty Cards 121 new LogMessageWithLevel("Redirty Cards", Level.DEBUG), 122 new LogMessageWithLevel("Parallel Redirty", Level.TRACE), 123 new LogMessageWithLevel("Redirtied Cards", Level.TRACE), 124 // Misc Top-level 125 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG), 126 new LogMessageWithLevel("String Dedup Fixup", Level.DEBUG), 127 new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG), 128 // Free CSet 129 new LogMessageWithLevel("Free Collection Set", Level.DEBUG), 130 new LogMessageWithLevel("Free Collection Set Serial", Level.TRACE), 131 new LogMessageWithLevel("Young Free Collection Set", Level.TRACE), 132 new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE), 133 // Humongous Eager Reclaim 134 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG), 135 new LogMessageWithLevel("Humongous Register", Level.DEBUG), 136 // Preserve CM Referents 137 new LogMessageWithLevel("Preserve CM Refs", Level.DEBUG), 138 // Merge PSS 139 new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG), 140 // TLAB handling 141 new LogMessageWithLevel("Prepare TLABs", Level.DEBUG), 142 new LogMessageWithLevel("Resize TLABs", Level.DEBUG), 143 144 new LogMessageWithLevelC2OrJVMCIOnly("DerivedPointerTable Update", Level.DEBUG), 145 new LogMessageWithLevel("Start New Collection Set", Level.DEBUG), 146 }; 147 148 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception { 149 for (LogMessageWithLevel l : messages) { 150 if (level.lessThan(l.level) || !l.isAvailable()) { 151 output.shouldNotContain(l.message); 152 } else { 153 output.shouldMatch("\\[" + l.level + ".*" + l.message); 154 } 155 } 156 } 157 158 public static void main(String[] args) throws Exception { 159 new TestGCLogMessages().testNormalLogs(); 160 new TestGCLogMessages().testWithToSpaceExhaustionLogs(); 161 new TestGCLogMessages().testWithInitialMark(); 162 new TestGCLogMessages().testExpandHeap(); 163 } 164 165 private void testNormalLogs() throws Exception { 166 167 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 168 "-Xmx10M", 169 GCTest.class.getName()); 170 171 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 172 checkMessagesAtLevel(output, allLogMessages, Level.OFF); 173 output.shouldHaveExitValue(0); 174 175 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 176 "-XX:+UseStringDeduplication", 177 "-Xmx10M", 178 "-Xlog:gc+phases=debug", 179 GCTest.class.getName()); 180 181 output = new OutputAnalyzer(pb.start()); 182 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG); 183 184 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 185 "-XX:+UseStringDeduplication", 186 "-Xmx10M", 187 "-Xlog:gc+phases=trace", 188 GCTest.class.getName()); 189 190 output = new OutputAnalyzer(pb.start()); 191 checkMessagesAtLevel(output, allLogMessages, Level.TRACE); 192 output.shouldHaveExitValue(0); 193 } 194 195 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] { 196 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG), 197 new LogMessageWithLevel("Recalculate Used", Level.TRACE), 198 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE), 199 }; 200 201 private void testWithToSpaceExhaustionLogs() throws Exception { 202 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 203 "-Xmx32M", 204 "-Xmn16M", 205 "-Xlog:gc+phases=debug", 206 GCTestWithToSpaceExhaustion.class.getName()); 207 208 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 209 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG); 210 output.shouldHaveExitValue(0); 211 212 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 213 "-Xmx32M", 214 "-Xmn16M", 215 "-Xlog:gc+phases=trace", 216 GCTestWithToSpaceExhaustion.class.getName()); 217 218 output = new OutputAnalyzer(pb.start()); 219 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE); 220 output.shouldHaveExitValue(0); 221 } 222 223 private void testWithInitialMark() throws Exception { 224 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 225 "-Xmx10M", 226 "-Xbootclasspath/a:.", 227 "-Xlog:gc*=debug", 228 "-XX:+UnlockDiagnosticVMOptions", 229 "-XX:+WhiteBoxAPI", 230 GCTestWithInitialMark.class.getName()); 231 232 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 233 output.shouldContain("Clear Claimed Marks"); 234 output.shouldHaveExitValue(0); 235 } 236 237 private void testExpandHeap() throws Exception { 238 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 239 "-Xmx10M", 240 "-Xbootclasspath/a:.", 241 "-Xlog:gc+ergo+heap=debug", 242 "-XX:+UnlockDiagnosticVMOptions", 243 "-XX:+WhiteBoxAPI", 244 GCTest.class.getName()); 245 246 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 247 output.shouldContain("Expand the heap. requested expansion amount: "); 248 output.shouldContain("B expansion amount: "); 249 output.shouldHaveExitValue(0); 250 } 251 252 253 static class GCTest { 254 private static byte[] garbage; 255 public static void main(String [] args) { 256 System.out.println("Creating garbage"); 257 // create 128MB of garbage. This should result in at least one GC 258 for (int i = 0; i < 1024; i++) { 259 garbage = new byte[128 * 1024]; 260 } 261 System.out.println("Done"); 262 } 263 } 264 265 static class GCTestWithToSpaceExhaustion { 266 private static byte[] garbage; 267 private static byte[] largeObject; 268 public static void main(String [] args) { 269 largeObject = new byte[16*1024*1024]; 270 System.out.println("Creating garbage"); 271 // create 128MB of garbage. This should result in at least one GC, 272 // some of them with to-space exhaustion. 273 for (int i = 0; i < 1024; i++) { 274 garbage = new byte[128 * 1024]; 275 } 276 System.out.println("Done"); 277 } 278 } 279 280 static class GCTestWithInitialMark { 281 public static void main(String [] args) { 282 sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox(); 283 WB.g1StartConcMarkCycle(); 284 } 285 } 286 287 } 288