1/* 2 * Copyright (c) 2014, 2016, 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 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 39import jdk.test.lib.process.OutputAnalyzer; 40import jdk.test.lib.process.ProcessTools; 41 42public class TestGCLogMessages { 43 44 private enum Level { 45 OFF(""), 46 INFO("info"), 47 DEBUG("debug"), 48 TRACE("trace"); 49 50 private String logName; 51 52 Level(String logName) { 53 this.logName = logName; 54 } 55 56 public boolean lessThan(Level other) { 57 return this.compareTo(other) < 0; 58 } 59 60 public String toString() { 61 return logName; 62 } 63 } 64 65 private class LogMessageWithLevel { 66 String message; 67 Level level; 68 69 public LogMessageWithLevel(String message, Level level) { 70 this.message = message; 71 this.level = level; 72 } 73 }; 74 75 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] { 76 new LogMessageWithLevel("Pre Evacuate Collection Set", Level.INFO), 77 new LogMessageWithLevel("Evacuate Collection Set", Level.INFO), 78 new LogMessageWithLevel("Post Evacuate Collection Set", Level.INFO), 79 new LogMessageWithLevel("Other", Level.INFO), 80 81 // Update RS 82 new LogMessageWithLevel("Scan HCC", Level.TRACE), 83 // Ext Root Scan 84 new LogMessageWithLevel("Thread Roots", Level.TRACE), 85 new LogMessageWithLevel("StringTable Roots", Level.TRACE), 86 new LogMessageWithLevel("Universe Roots", Level.TRACE), 87 new LogMessageWithLevel("JNI Handles Roots", Level.TRACE), 88 new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE), 89 new LogMessageWithLevel("FlatProfiler Roots", Level.TRACE), 90 new LogMessageWithLevel("Management Roots", Level.TRACE), 91 new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE), 92 new LogMessageWithLevel("CLDG Roots", Level.TRACE), 93 new LogMessageWithLevel("JVMTI Roots", Level.TRACE), 94 new LogMessageWithLevel("SATB Filtering", Level.TRACE), 95 new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE), 96 new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE), 97 new LogMessageWithLevel("Weak CLD Roots", Level.TRACE), 98 // Redirty Cards 99 new LogMessageWithLevel("Redirty Cards", Level.DEBUG), 100 new LogMessageWithLevel("Parallel Redirty", Level.TRACE), 101 new LogMessageWithLevel("Redirtied Cards", Level.TRACE), 102 // Misc Top-level 103 new LogMessageWithLevel("Code Roots Purge", Level.DEBUG), 104 new LogMessageWithLevel("String Dedup Fixup", Level.DEBUG), 105 new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG), 106 // Free CSet 107 new LogMessageWithLevel("Free Collection Set", Level.DEBUG), 108 new LogMessageWithLevel("Free Collection Set Serial", Level.TRACE), 109 new LogMessageWithLevel("Young Free Collection Set", Level.TRACE), 110 new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE), 111 // Humongous Eager Reclaim 112 new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG), 113 new LogMessageWithLevel("Humongous Register", Level.DEBUG), 114 // Preserve CM Referents 115 new LogMessageWithLevel("Preserve CM Refs", Level.DEBUG), 116 // Merge PSS 117 new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG), 118 }; 119 120 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception { 121 for (LogMessageWithLevel l : messages) { 122 if (level.lessThan(l.level)) { 123 output.shouldNotContain(l.message); 124 } else { 125 output.shouldMatch("\\[" + l.level + ".*" + l.message); 126 } 127 } 128 } 129 130 public static void main(String[] args) throws Exception { 131 new TestGCLogMessages().testNormalLogs(); 132 new TestGCLogMessages().testWithToSpaceExhaustionLogs(); 133 new TestGCLogMessages().testWithInitialMark(); 134 } 135 136 private void testNormalLogs() throws Exception { 137 138 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 139 "-Xmx10M", 140 GCTest.class.getName()); 141 142 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 143 checkMessagesAtLevel(output, allLogMessages, Level.OFF); 144 output.shouldHaveExitValue(0); 145 146 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 147 "-XX:+UseStringDeduplication", 148 "-Xmx10M", 149 "-Xlog:gc+phases=debug", 150 GCTest.class.getName()); 151 152 output = new OutputAnalyzer(pb.start()); 153 checkMessagesAtLevel(output, allLogMessages, Level.DEBUG); 154 155 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 156 "-XX:+UseStringDeduplication", 157 "-Xmx10M", 158 "-Xlog:gc+phases=trace", 159 GCTest.class.getName()); 160 161 output = new OutputAnalyzer(pb.start()); 162 checkMessagesAtLevel(output, allLogMessages, Level.TRACE); 163 output.shouldHaveExitValue(0); 164 } 165 166 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] { 167 new LogMessageWithLevel("Evacuation Failure", Level.DEBUG), 168 new LogMessageWithLevel("Recalculate Used", Level.TRACE), 169 new LogMessageWithLevel("Remove Self Forwards", Level.TRACE), 170 new LogMessageWithLevel("Restore RemSet", Level.TRACE), 171 }; 172 173 private void testWithToSpaceExhaustionLogs() throws Exception { 174 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 175 "-Xmx32M", 176 "-Xmn16M", 177 "-Xlog:gc+phases=debug", 178 GCTestWithToSpaceExhaustion.class.getName()); 179 180 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 181 checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG); 182 output.shouldHaveExitValue(0); 183 184 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 185 "-Xmx32M", 186 "-Xmn16M", 187 "-Xlog:gc+phases=trace", 188 GCTestWithToSpaceExhaustion.class.getName()); 189 190 output = new OutputAnalyzer(pb.start()); 191 checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE); 192 output.shouldHaveExitValue(0); 193 } 194 195 private void testWithInitialMark() throws Exception { 196 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 197 "-Xmx10M", 198 "-Xbootclasspath/a:.", 199 "-Xlog:gc*=debug", 200 "-XX:+UnlockDiagnosticVMOptions", 201 "-XX:+WhiteBoxAPI", 202 GCTestWithInitialMark.class.getName()); 203 204 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 205 output.shouldContain("Clear Claimed Marks"); 206 output.shouldHaveExitValue(0); 207 } 208 209 static class GCTest { 210 private static byte[] garbage; 211 public static void main(String [] args) { 212 System.out.println("Creating garbage"); 213 // create 128MB of garbage. This should result in at least one GC 214 for (int i = 0; i < 1024; i++) { 215 garbage = new byte[128 * 1024]; 216 } 217 System.out.println("Done"); 218 } 219 } 220 221 static class GCTestWithToSpaceExhaustion { 222 private static byte[] garbage; 223 private static byte[] largeObject; 224 public static void main(String [] args) { 225 largeObject = new byte[16*1024*1024]; 226 System.out.println("Creating garbage"); 227 // create 128MB of garbage. This should result in at least one GC, 228 // some of them with to-space exhaustion. 229 for (int i = 0; i < 1024; i++) { 230 garbage = new byte[128 * 1024]; 231 } 232 System.out.println("Done"); 233 } 234 } 235 236 static class GCTestWithInitialMark { 237 public static void main(String [] args) { 238 sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox(); 239 WB.g1StartConcMarkCycle(); 240 } 241 } 242 243} 244 245