1 /*
   2  * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   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
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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  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
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  23 
  24 /**
  25  * @test TestPrintRegionRememberedSetInfo
  26  * @key gc
  27  * @bug 8014240
  28  * @summary Test output of G1PrintRegionRememberedSetInfo
  29  * @library /testlibrary
  30  * @modules java.base/sun.misc
  31  *          java.management
  32  * @run main TestPrintRegionRememberedSetInfo
  33  * @author thomas.schatzl@oracle.com
  34  */
  35 
  36 import jdk.test.lib.*;
  37 import java.lang.Thread;
  38 import java.util.ArrayList;
  39 import java.util.Arrays;
  40 
  41 class RunAndWaitForMarking {
  42     public static void main(String[] args) {
  43         System.gc();
  44         try {
  45             Thread.sleep(200);
  46         } catch (InterruptedException e) {
  47         }
  48     }
  49 }
  50 
  51 public class TestPrintRegionRememberedSetInfo {
  52 
  53     public static String runTest(String arg) throws Exception {
  54         ArrayList<String> finalargs = new ArrayList<String>();
  55         String[] defaultArgs = new String[] {
  56             "-XX:+UseG1GC",
  57             "-Xmx10m",
  58             "-XX:+ExplicitGCInvokesConcurrent",
  59             "-XX:+UnlockDiagnosticVMOptions",
  60             "-XX:G1HeapRegionSize=1M",
  61             "-XX:InitiatingHeapOccupancyPercent=0",
  62         };
  63 
  64         finalargs.addAll(Arrays.asList(defaultArgs));
  65         finalargs.add(arg);
  66 
  67         finalargs.add(RunAndWaitForMarking.class.getName());
  68 
  69         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  70             finalargs.toArray(new String[0]));
  71         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  72         output.shouldHaveExitValue(0);
  73 
  74         String result = output.getStdout();
  75         return result;
  76     }
  77 
  78     public static void main(String[] args) throws Exception {
  79         String result;
  80 
  81         result = runTest("-Xlog:gc+liveness=trace");
  82         // check that we got region statistics output
  83         if (result.indexOf("PHASE") == -1) {
  84             throw new RuntimeException("Unexpected output from -XX:+PrintRegionLivenessInfo found.");
  85         }
  86 
  87         result = runTest("-Xlog:gc+liveness");
  88         if (result.indexOf("remset") != -1) {
  89             throw new RuntimeException("Should find remembered set information in output.");
  90         }
  91     }
  92 }
  93