1 /* 2 * Copyright (c) 2014, 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 TestPrintGCDetails 26 * @bug 8035406 8027295 8035398 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 public static void main(String[] args) throws Exception { 38 testNormalLogs(); 39 testWithToSpaceExhaustionLogs(); 40 } 41 42 private static void testNormalLogs() throws Exception { 43 44 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 45 "-Xmx10M", 46 GCTest.class.getName()); 47 48 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 49 50 output.shouldNotContain("[Redirty Cards"); 51 output.shouldNotContain("[Code Root Purge"); 52 output.shouldNotContain("[String Dedup Fixup"); 53 output.shouldNotContain("[Young Free CSet"); 54 output.shouldNotContain("[Non-Young Free CSet"); 55 output.shouldHaveExitValue(0); 56 57 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 58 "-XX:+UseStringDeduplication", 59 "-Xmx10M", 60 "-XX:+PrintGCDetails", 61 GCTest.class.getName()); 62 63 output = new OutputAnalyzer(pb.start()); 64 65 output.shouldContain("[Redirty Cards"); 66 output.shouldContain("[Code Root Purge"); 67 output.shouldContain("[String Dedup Fixup"); 68 output.shouldNotContain("[Young Free CSet"); 69 output.shouldNotContain("[Non-Young Free CSet"); 70 output.shouldHaveExitValue(0); 71 72 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 73 "-XX:+UseStringDeduplication", 74 "-Xmx10M", 75 "-XX:+PrintGCDetails", 76 "-XX:+UnlockExperimentalVMOptions", 77 "-XX:G1LogLevel=finest", 78 GCTest.class.getName()); 79 80 output = new OutputAnalyzer(pb.start()); 81 82 output.shouldContain("[Redirty Cards"); 83 output.shouldContain("[Code Root Purge"); 84 output.shouldContain("[String Dedup Fixup"); 85 output.shouldContain("[Young Free CSet"); 86 output.shouldContain("[Non-Young Free CSet"); 87 88 // also check evacuation failure messages once 89 output.shouldNotContain("[Evacuation Failure"); 90 output.shouldNotContain("[Recalculate Used"); 91 output.shouldNotContain("[Remove Self Forwards"); 92 output.shouldNotContain("[Restore RemSet"); 93 output.shouldHaveExitValue(0); 94 } 95 96 private static void testWithToSpaceExhaustionLogs() throws Exception { 97 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 98 "-Xmx10M", 99 "-Xmn5M", 100 "-XX:+PrintGCDetails", 101 GCTestWithToSpaceExhaustion.class.getName()); 102 103 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 104 output.shouldContain("[Evacuation Failure"); 105 output.shouldNotContain("[Recalculate Used"); 106 output.shouldNotContain("[Remove Self Forwards"); 107 output.shouldNotContain("[Restore RemSet"); 108 output.shouldHaveExitValue(0); 109 110 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 111 "-Xmx10M", 112 "-Xmn5M", 113 "-XX:+PrintGCDetails", 114 "-XX:+UnlockExperimentalVMOptions", 115 "-XX:G1LogLevel=finest", 116 GCTestWithToSpaceExhaustion.class.getName()); 117 118 output = new OutputAnalyzer(pb.start()); 119 output.shouldContain("[Evacuation Failure"); 120 output.shouldContain("[Recalculate Used"); 121 output.shouldContain("[Remove Self Forwards"); 122 output.shouldContain("[Restore RemSet"); 123 output.shouldHaveExitValue(0); 124 } 125 126 static class GCTest { 127 private static byte[] garbage; 128 public static void main(String [] args) { 129 System.out.println("Creating garbage"); 130 // create 128MB of garbage. This should result in at least one GC 131 for (int i = 0; i < 1024; i++) { 132 garbage = new byte[128 * 1024]; 133 } 134 System.out.println("Done"); 135 } 136 } 137 138 static class GCTestWithToSpaceExhaustion { 139 private static byte[] garbage; 140 private static byte[] largeObject; 141 public static void main(String [] args) { 142 largeObject = new byte[5*1024*1024]; 143 System.out.println("Creating garbage"); 144 // create 128MB of garbage. This should result in at least one GC, 145 // some of them with to-space exhaustion. 146 for (int i = 0; i < 1024; i++) { 147 garbage = new byte[128 * 1024]; 148 } 149 System.out.println("Done"); 150 } 151 } 152 }