1 /* 2 * Copyright (c) 2014, 2015, 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 27 * @summary Ensure that the PrintGCDetails output for a minor GC with G1 28 * includes the expected necessary messages. 29 * @key gc 30 * @library /testlibrary 31 * @modules java.base/sun.misc 32 * java.management 33 */ 34 35 import jdk.test.lib.ProcessTools; 36 import jdk.test.lib.OutputAnalyzer; 37 38 public class TestGCLogMessages { 39 40 private enum Level { 41 OFF, FINER, FINEST; 42 public boolean lessOrEqualTo(Level other) { 43 return this.compareTo(other) < 0; 44 } 45 } 46 47 private class LogMessageWithLevel { 48 String message; 49 Level level; 50 51 public LogMessageWithLevel(String message, Level level) { 52 this.message = message; 53 this.level = level; 54 } 55 }; 56 57 private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] { 58 // Update RS 59 new LogMessageWithLevel("Scan HCC (ms)", Level.FINER), 60 // Ext Root Scan 61 new LogMessageWithLevel("Thread Roots (ms)", Level.FINEST), 62 new LogMessageWithLevel("StringTable Roots (ms)", Level.FINEST), 63 new LogMessageWithLevel("Universe Roots (ms)", Level.FINEST), 64 new LogMessageWithLevel("JNI Handles Roots (ms)", Level.FINEST), 65 new LogMessageWithLevel("ObjectSynchronizer Roots (ms)", Level.FINEST), 66 new LogMessageWithLevel("FlatProfiler Roots", Level.FINEST), 67 new LogMessageWithLevel("Management Roots", Level.FINEST), 68 new LogMessageWithLevel("SystemDictionary Roots", Level.FINEST), 69 new LogMessageWithLevel("CLDG Roots", Level.FINEST), 70 new LogMessageWithLevel("JVMTI Roots", Level.FINEST), 71 new LogMessageWithLevel("SATB Filtering", Level.FINEST), 72 new LogMessageWithLevel("CM RefProcessor Roots", Level.FINEST), 73 new LogMessageWithLevel("Wait For Strong CLD", Level.FINEST), 74 new LogMessageWithLevel("Weak CLD Roots", Level.FINEST), 75 // Redirty Cards 76 new LogMessageWithLevel("Redirty Cards", Level.FINER), 77 new LogMessageWithLevel("Parallel Redirty", Level.FINEST), 78 new LogMessageWithLevel("Redirtied Cards", Level.FINEST), 79 // Misc Top-level 80 new LogMessageWithLevel("Code Root Purge", Level.FINER), 81 new LogMessageWithLevel("String Dedup Fixup", Level.FINER), 82 new LogMessageWithLevel("Expand Heap After Collection", Level.FINER), 83 // Free CSet 84 new LogMessageWithLevel("Young Free CSet", Level.FINEST), 85 new LogMessageWithLevel("Non-Young Free CSet", Level.FINEST), 86 // Humongous Eager Reclaim 87 new LogMessageWithLevel("Humongous Reclaim", Level.FINER), 88 new LogMessageWithLevel("Humongous Register", Level.FINER), 89 }; 90 91 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception { 92 for (LogMessageWithLevel l : messages) { 93 if (level.lessOrEqualTo(l.level)) { 94 output.shouldNotContain(l.message); 95 } else { 96 output.shouldContain(l.message); 97 } 98 } 99 } 100 101 public static void main(String[] args) throws Exception { 102 new TestGCLogMessages().testNormalLogs(); 103 new TestGCLogMessages().testWithToSpaceExhaustionLogs(); 104 } 105 106 private void testNormalLogs() throws Exception { 107 108 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 109 "-Xmx10M", 110 GCTest.class.getName()); 111 112 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 113 checkMessagesAtLevel(output, allLogMessages, Level.OFF); 114 output.shouldHaveExitValue(0); 115 116 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 117 "-XX:+UseStringDeduplication", 118 "-Xmx10M", 119 "-XX:+PrintGCDetails", 120 GCTest.class.getName()); 121 122 output = new OutputAnalyzer(pb.start()); 123 checkMessagesAtLevel(output, allLogMessages, Level.FINER); 124 125 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 126 "-XX:+UseStringDeduplication", 127 "-Xmx10M", 128 "-XX:+PrintGCDetails", 129 "-XX:+UnlockExperimentalVMOptions", 130 "-XX:G1LogLevel=finest", 131 GCTest.class.getName()); 132 133 output = new OutputAnalyzer(pb.start()); 134 checkMessagesAtLevel(output, allLogMessages, Level.FINEST); 135 output.shouldHaveExitValue(0); 136 } 137 138 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] { 139 new LogMessageWithLevel("Evacuation Failure", Level.FINER), 140 new LogMessageWithLevel("Recalculate Used", Level.FINEST), 141 new LogMessageWithLevel("Remove Self Forwards", Level.FINEST), 142 new LogMessageWithLevel("Restore RemSet", Level.FINEST), 143 }; 144 145 private void testWithToSpaceExhaustionLogs() throws Exception { 146 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 147 "-Xmx32M", 148 "-Xmn16M", 149 "-XX:+PrintGCDetails", 150 GCTestWithToSpaceExhaustion.class.getName()); 151 152 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 153 checkMessagesAtLevel(output, exhFailureMessages, Level.FINER); 154 output.shouldHaveExitValue(0); 155 156 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 157 "-Xmx32M", 158 "-Xmn16M", 159 "-XX:+PrintGCDetails", 160 "-XX:+UnlockExperimentalVMOptions", 161 "-XX:G1LogLevel=finest", 162 GCTestWithToSpaceExhaustion.class.getName()); 163 164 output = new OutputAnalyzer(pb.start()); 165 checkMessagesAtLevel(output, exhFailureMessages, Level.FINEST); 166 output.shouldHaveExitValue(0); 167 } 168 169 static class GCTest { 170 private static byte[] garbage; 171 public static void main(String [] args) { 172 System.out.println("Creating garbage"); 173 // create 128MB of garbage. This should result in at least one GC 174 for (int i = 0; i < 1024; i++) { 175 garbage = new byte[128 * 1024]; 176 } 177 System.out.println("Done"); 178 } 179 } 180 181 static class GCTestWithToSpaceExhaustion { 182 private static byte[] garbage; 183 private static byte[] largeObject; 184 public static void main(String [] args) { 185 largeObject = new byte[16*1024*1024]; 186 System.out.println("Creating garbage"); 187 // create 128MB of garbage. This should result in at least one GC, 188 // some of them with to-space exhaustion. 189 for (int i = 0; i < 1024; i++) { 190 garbage = new byte[128 * 1024]; 191 } 192 System.out.println("Done"); 193 } 194 } 195 } 196