1 /*
   2  * Copyright (c) 2013, 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 TestSummarizeRSetStats2.java
  26  * @bug 8014078
  27  * @library /testlibrary
  28  * @build TestSummarizeRSetStats2 TestSummarizeRSetStatsTools
  29  * @summary Verify output of -XX:+G1SummarizeRSetStats in regards to per-region type output
  30  * @run main TestSummarizeRSetStats2
  31  */
  32 
  33 import com.oracle.java.testlibrary.*;
  34 import java.lang.Thread;
  35 import java.util.ArrayList;
  36 import java.util.Arrays;
  37 
  38 public class TestSummarizeRSetStats2 {
  39 
  40     private static void checkCounts(int expected, int actual, String which) throws Exception {
  41         if (expected != actual) {
  42             throw new Exception("RSet summaries mention " + which + " regions an incorrect number of times. Expected " + expected + ", got " + actual);
  43         }
  44     }
  45 
  46     private static void expectStatistics(String result, int expectedCumulative, int expectedPeriodic) throws Exception {
  47         TestSummarizeRSetStatsTools.expectStatistics(result, expectedCumulative, expectedPeriodic);
  48         int actualYoung = result.split("Young regions").length - 1;
  49         int actualHumonguous = result.split("Humonguous regions").length - 1;
  50         int actualFree = result.split("Free regions").length - 1;
  51         int actualOther = result.split("Other regions").length - 1;
  52 
  53         // the strings we check for above are printed twice per summary
  54         int expectedPerRegionTypeInfo = (expectedCumulative + expectedPeriodic) * 2;
  55 
  56         checkCounts(expectedPerRegionTypeInfo, actualYoung, "Young");
  57         checkCounts(expectedPerRegionTypeInfo, actualHumonguous, "Humonguous");
  58         checkCounts(expectedPerRegionTypeInfo, actualFree, "Free");
  59         checkCounts(expectedPerRegionTypeInfo, actualOther, "Other");
  60     }
  61 
  62     public static void main(String[] args) throws Exception {
  63         String result;
  64 
  65         // single RSet statistics output at the end
  66         result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 0);
  67         expectStatistics(result, 1, 0);
  68 
  69         // two times RSet statistics output
  70         result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
  71         expectStatistics(result, 1, 1);
  72 
  73         // four times RSet statistics output
  74         result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1", "-XX:G1SummarizeRSetStatsTime=1" }, 3);
  75         expectStatistics(result, 1, 3);
  76 
  77         // four times RSet statistics output
  78         result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1", "-XX:G1SummarizeRSetStatsTime=2" }, 3);
  79         expectStatistics(result, 1, 3);
  80 
  81         // seven times RSet statistics output (before, after gc and cumulative)
  82         result = TestSummarizeRSetStatsTools.runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1", "-XX:G1SummarizeRSetStatsTime=3" }, 3);
  83         expectStatistics(result, 1, 6);
  84     }
  85 }
  86