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 
  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("[Redirty Cards");
  46     output.shouldNotContain("[Code Root Purge");
  47     output.shouldNotContain("[Young Free CSet");
  48     output.shouldNotContain("[Non-Young Free CSet");
  49     output.shouldHaveExitValue(0);
  50 
  51     pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
  52                                                "-Xmx10M",
  53                                                "-XX:+PrintGCDetails",
  54                                                GCTest.class.getName());
  55 
  56     output = new OutputAnalyzer(pb.start());
  57 
  58     output.shouldContain("[Redirty Cards");
  59     output.shouldContain("[Code Root Purge");
  60     output.shouldNotContain("[Young Free CSet");
  61     output.shouldNotContain("[Non-Young Free CSet");
  62     output.shouldHaveExitValue(0);
  63 
  64     pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
  65                                                "-Xmx10M",
  66                                                "-XX:+PrintGCDetails",
  67                                                "-XX:+UnlockExperimentalVMOptions",
  68                                                "-XX:G1LogLevel=finest",
  69                                                GCTest.class.getName());
  70 
  71     output = new OutputAnalyzer(pb.start());
  72 
  73     output.shouldContain("[Redirty Cards");
  74     output.shouldContain("[Code Root Purge");
  75     output.shouldContain("[Young Free CSet");
  76     output.shouldContain("[Non-Young Free CSet");
  77     output.shouldHaveExitValue(0);
  78 
  79   }
  80 
  81   static class GCTest {
  82     private static byte[] garbage;
  83     public static void main(String [] args) {
  84       System.out.println("Creating garbage");
  85       // create 128MB of garbage. This should result in at least one GC
  86       for (int i = 0; i < 1024; i++) {
  87         garbage = new byte[128 * 1024];
  88       }
  89       System.out.println("Done");
  90     }
  91   }
  92 }