1 /*
   2  * Copyright (c) 2013, 2016, 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 TestPrintRegionRememberedSetInfo
  26  * @key gc
  27  * @bug 8014240
  28  * @summary Test output of G1PrintRegionRememberedSetInfo
  29  * @requires vm.gc.G1
  30  * @library /test/lib
  31  * @modules java.base/jdk.internal.misc
  32  *          java.management
  33  * @run main TestPrintRegionRememberedSetInfo
  34  * @author thomas.schatzl@oracle.com
  35  */
  36 
  37 import jdk.test.lib.process.OutputAnalyzer;
  38 import jdk.test.lib.process.ProcessTools;
  39 import java.lang.Thread;
  40 import java.util.ArrayList;
  41 import java.util.Arrays;
  42 
  43 class RunAndWaitForMarking {
  44     public static void main(String[] args) {
  45         System.gc();
  46         try {
  47             Thread.sleep(200);
  48         } catch (InterruptedException e) {
  49         }
  50     }
  51 }
  52 
  53 public class TestPrintRegionRememberedSetInfo {
  54 
  55     public static String runTest(String arg) throws Exception {
  56         ArrayList<String> finalargs = new ArrayList<String>();
  57         String[] defaultArgs = new String[] {
  58             "-XX:+UseG1GC",
  59             "-Xmx10m",
  60             "-XX:+ExplicitGCInvokesConcurrent",
  61             "-XX:+UnlockDiagnosticVMOptions",
  62             "-XX:G1HeapRegionSize=1M",
  63             "-XX:InitiatingHeapOccupancyPercent=0",
  64         };
  65 
  66         finalargs.addAll(Arrays.asList(defaultArgs));
  67         finalargs.add(arg);
  68 
  69         finalargs.add(RunAndWaitForMarking.class.getName());
  70 
  71         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  72             finalargs.toArray(new String[0]));
  73         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  74         output.shouldHaveExitValue(0);
  75 
  76         String result = output.getStdout();
  77         return result;
  78     }
  79 
  80     public static void main(String[] args) throws Exception {
  81         String result;
  82 
  83         result = runTest("-Xlog:gc+liveness=trace");
  84         // check that we got region statistics output
  85         if (result.indexOf("PHASE") == -1) {
  86             throw new RuntimeException("Unexpected output from -XX:+PrintRegionLivenessInfo found.");
  87         }
  88 
  89         result = runTest("-Xlog:gc+liveness");
  90         if (result.indexOf("remset") != -1) {
  91             throw new RuntimeException("Should find remembered set information in output.");
  92         }
  93     }
  94 }
  95