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 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 */ 32 33 import com.oracle.java.testlibrary.ProcessTools; 34 import com.oracle.java.testlibrary.OutputAnalyzer; 35 36 public class TestGCLogMessages { 37 private class LogMessageWithLevel { 38 String message; 39 int level; 40 41 public LogMessageWithLevel(String message, int level) { 42 this.message = message; 43 this.level = level; 44 } 45 }; 46 47 LogMessageWithLevel messages[] = new LogMessageWithLevel[] { 48 // Ext Root Scan 49 new LogMessageWithLevel("Thread Roots (ms)", 3), 50 new LogMessageWithLevel("StringTable Roots (ms)", 3), 51 new LogMessageWithLevel("Universe Roots (ms)", 3), 52 new LogMessageWithLevel("JNI Handles Roots (ms)", 3), 53 new LogMessageWithLevel("ObjectSynchronizer Roots (ms)", 3), 54 new LogMessageWithLevel("FlatProfiler Roots", 3), 55 new LogMessageWithLevel("Management Roots", 3), 56 new LogMessageWithLevel("SystemDictionary Roots", 3), 57 new LogMessageWithLevel("CLDG Roots", 3), 58 new LogMessageWithLevel("JVMTI Roots", 3), 59 new LogMessageWithLevel("CodeCache Roots", 3), 60 new LogMessageWithLevel("Filter SATB Roots", 3), 61 new LogMessageWithLevel("CM RefProcessor Roots", 3), 62 new LogMessageWithLevel("Wait For Strong CLD", 3), 63 new LogMessageWithLevel("Weak CLD Roots", 3), 64 // Redirty Cards 65 new LogMessageWithLevel("Redirty Cards", 2), 66 new LogMessageWithLevel("Parallel Redirty", 3), 67 new LogMessageWithLevel("Redirtied Cards", 3), 68 // Misc Top-level 69 new LogMessageWithLevel("Code Root Purge", 2), 70 new LogMessageWithLevel("String Dedup Fixup", 2), 71 // Free CSet 72 new LogMessageWithLevel("Young Free CSet", 3), 73 new LogMessageWithLevel("Non-Young Free CSet", 3), 74 // Humongous Eager Reclaim 75 new LogMessageWithLevel("Humongous Reclaim", 2), 76 new LogMessageWithLevel("Humongous Register", 2), 77 }; 78 79 void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], int level) throws Exception { 80 for (LogMessageWithLevel l : messages) { 81 if (level >= l.level) { 82 output.shouldContain(l.message); 83 } else { 84 output.shouldNotContain(l.message); 85 } 86 } 87 } 88 89 public static void main(String[] args) throws Exception { 90 new TestGCLogMessages().testNormalLogs(); 91 new TestGCLogMessages().testWithToSpaceExhaustionLogs(); 92 } 93 94 private void testNormalLogs() throws Exception { 95 96 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 97 "-Xmx10M", 98 GCTest.class.getName()); 99 100 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 101 checkMessagesAtLevel(output, messages, 0); 102 output.shouldHaveExitValue(0); 103 104 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 105 "-XX:+UseStringDeduplication", 106 "-Xmx10M", 107 "-XX:+PrintGCDetails", 108 GCTest.class.getName()); 109 110 output = new OutputAnalyzer(pb.start()); 111 checkMessagesAtLevel(output, messages, 2); 112 113 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 114 "-XX:+UseStringDeduplication", 115 "-Xmx10M", 116 "-XX:+PrintGCDetails", 117 "-XX:+UnlockExperimentalVMOptions", 118 "-XX:G1LogLevel=finest", 119 GCTest.class.getName()); 120 121 output = new OutputAnalyzer(pb.start()); 122 checkMessagesAtLevel(output, messages, 3); 123 output.shouldHaveExitValue(0); 124 } 125 126 LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] { 127 new LogMessageWithLevel("Evacuation Failure", 2), 128 new LogMessageWithLevel("Recalculate Used", 3), 129 new LogMessageWithLevel("Remove Self Forwards", 3), 130 new LogMessageWithLevel("Restore RemSet", 3), 131 }; 132 133 private void testWithToSpaceExhaustionLogs() throws Exception { 134 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 135 "-Xmx32M", 136 "-Xmn16M", 137 "-XX:+PrintGCDetails", 138 GCTestWithToSpaceExhaustion.class.getName()); 139 140 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 141 checkMessagesAtLevel(output, exhFailureMessages, 2); 142 output.shouldHaveExitValue(0); 143 144 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 145 "-Xmx32M", 146 "-Xmn16M", 147 "-XX:+PrintGCDetails", 148 "-XX:+UnlockExperimentalVMOptions", 149 "-XX:G1LogLevel=finest", 150 GCTestWithToSpaceExhaustion.class.getName()); 151 152 output = new OutputAnalyzer(pb.start()); 153 checkMessagesAtLevel(output, exhFailureMessages, 3); 154 output.shouldHaveExitValue(0); 155 } 156 157 static class GCTest { 158 private static byte[] garbage; 159 public static void main(String [] args) { 160 System.out.println("Creating garbage"); 161 // create 128MB of garbage. This should result in at least one GC 162 for (int i = 0; i < 1024; i++) { 163 garbage = new byte[128 * 1024]; 164 } 165 System.out.println("Done"); 166 } 167 } 168 169 static class GCTestWithToSpaceExhaustion { 170 private static byte[] garbage; 171 private static byte[] largeObject; 172 public static void main(String [] args) { 173 largeObject = new byte[16*1024*1024]; 174 System.out.println("Creating garbage"); 175 // create 128MB of garbage. This should result in at least one GC, 176 // some of them with to-space exhaustion. 177 for (int i = 0; i < 1024; i++) { 178 garbage = new byte[128 * 1024]; 179 } 180 System.out.println("Done"); 181 } 182 } 183 } 184