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 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 39 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 40 "-Xmx10M", 41 GCTest.class.getName()); 42 43 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 44 45 output.shouldNotContain("[Code Root Purge"); 46 output.shouldNotContain("[Young Free CSet"); 47 output.shouldNotContain("[Non-Young Free CSet"); 48 output.shouldHaveExitValue(0); 49 50 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 51 "-Xmx10M", 52 "-XX:+PrintGCDetails", 53 GCTest.class.getName()); 54 55 output = new OutputAnalyzer(pb.start()); 56 57 output.shouldContain("[Code Root Purge"); 58 output.shouldNotContain("[Young Free CSet"); 59 output.shouldNotContain("[Non-Young Free CSet"); 60 output.shouldHaveExitValue(0); 61 62 pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", 63 "-Xmx10M", 64 "-XX:+PrintGCDetails", 65 "-XX:+UnlockExperimentalVMOptions", 66 "-XX:G1LogLevel=finest", 67 GCTest.class.getName()); 68 69 output = new OutputAnalyzer(pb.start()); 70 71 output.shouldContain("[Code Root Purge"); 72 output.shouldContain("[Young Free CSet"); 73 output.shouldContain("[Non-Young Free CSet"); 74 output.shouldHaveExitValue(0); 75 76 } 77 78 static class GCTest { 79 private static byte[] garbage; 80 public static void main(String [] args) { 81 System.out.println("Creating garbage"); 82 // create 128MB of garbage. This should result in at least one GC 83 for (int i = 0; i < 1024; i++) { 84 garbage = new byte[128 * 1024]; 85 } 86 System.out.println("Done"); 87 } 88 } 89 }