1 /*
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   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
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  23 
  24 /**
  25  * @test TestPrintRegionRememberedSetInfo
  26  * @key gc
  27  * @bug 8014240
  28  * @summary Test output of G1PrintRegionRememberedSetInfo
  29  * @library /test/lib
  30  * @modules java.base/jdk.internal.misc
  31  *          java.management
  32  * @run main TestPrintRegionRememberedSetInfo
  33  * @author thomas.schatzl@oracle.com
  34  */
  35 
  36 import jdk.test.lib.process.OutputAnalyzer;
  37 import jdk.test.lib.process.ProcessTools;
  38 import java.lang.Thread;
  39 import java.util.ArrayList;
  40 import java.util.Arrays;
  41 
  42 class RunAndWaitForMarking {
  43     public static void main(String[] args) {
  44         System.gc();
  45         try {
  46             Thread.sleep(200);
  47         } catch (InterruptedException e) {
  48         }
  49     }
  50 }
  51 
  52 public class TestPrintRegionRememberedSetInfo {
  53 
  54     public static String runTest(String arg) throws Exception {
  55         ArrayList<String> finalargs = new ArrayList<String>();
  56         String[] defaultArgs = new String[] {
  57             "-XX:+UseG1GC",
  58             "-Xmx10m",
  59             "-XX:+ExplicitGCInvokesConcurrent",
  60             "-XX:+UnlockDiagnosticVMOptions",
  61             "-XX:G1HeapRegionSize=1M",
  62             "-XX:InitiatingHeapOccupancyPercent=0",
  63         };
  64 
  65         finalargs.addAll(Arrays.asList(defaultArgs));
  66         finalargs.add(arg);
  67 
  68         finalargs.add(RunAndWaitForMarking.class.getName());
  69 
  70         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
  71             finalargs.toArray(new String[0]));
  72         OutputAnalyzer output = new OutputAnalyzer(pb.start());
  73         output.shouldHaveExitValue(0);
  74 
  75         String result = output.getStdout();
  76         return result;
  77     }
  78 
  79     public static void main(String[] args) throws Exception {
  80         String result;
  81 
  82         result = runTest("-Xlog:gc+liveness=trace");
  83         // check that we got region statistics output
  84         if (result.indexOf("PHASE") == -1) {
  85             throw new RuntimeException("Unexpected output from -XX:+PrintRegionLivenessInfo found.");
  86         }
  87 
  88         result = runTest("-Xlog:gc+liveness");
  89         if (result.indexOf("remset") != -1) {
  90             throw new RuntimeException("Should find remembered set information in output.");
  91         }
  92     }
  93 }
  94