jdk8-mips64-public/hotspot: test/gc/g1/TestSummarizeRSetStats.java@34aa07e92d22 (annotated)

test/gc/g1/TestSummarizeRSetStats.java@34aa07e92d22 (annotated)

test/gc/g1/TestSummarizeRSetStats.java

Thu, 19 Sep 2013 09:36:51 -0700

author: cl
date: Thu, 19 Sep 2013 09:36:51 -0700
changeset 5664: 34aa07e92d22
parent 5204: e72f7eecc96d
child 5807: c319b188c7b2
permissions: -rw-r--r--

Added tag jdk8-b108 for changeset 85072013aad4

 /*
  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 /*
  * @test TestSummarizeRSetStats.java
  * @bug 8013895
  * @library /testlibrary
  * @build TestSummarizeRSetStats
  * @summary Verify output of -XX:+G1SummarizeRSetStats
  * @run main TestSummarizeRSetStats
  *
  * Test the output of G1SummarizeRSetStats in conjunction with G1SummarizeRSetStatsPeriod.
  */
 import com.oracle.java.testlibrary.*;
 import java.lang.Thread;
 import java.util.ArrayList;
 import java.util.Arrays;
 class RunSystemGCs {
     // 4M size, both are directly allocated into the old gen
     static Object[] largeObject1 = new Object[1024 * 1024];
     static Object[] largeObject2 = new Object[1024 * 1024];
     static int[] temp;
     public static void main(String[] args) {
         // create some cross-references between these objects
         for (int i = 0; i < largeObject1.length; i++) {
             largeObject1[i] = largeObject2;
         }
         for (int i = 0; i < largeObject2.length; i++) {
             largeObject2[i] = largeObject1;
         }
         int numGCs = Integer.parseInt(args[0]);
         if (numGCs > 0) {
             // try to force a minor collection: the young gen is 4M, the
             // amount of data allocated below is roughly that (4*1024*1024 +
             // some header data)
             for (int i = 0; i < 1024 ; i++) {
                 temp = new int[1024];
             }
         }
         for (int i = 0; i < numGCs - 1; i++) {
             System.gc();
         }
     }
 }
 public class TestSummarizeRSetStats {
     public static String runTest(String[] additionalArgs, int numGCs) throws Exception {
         ArrayList<String> finalargs = new ArrayList<String>();
         String[] defaultArgs = new String[] {
             "-XX:+UseG1GC",
             "-Xmn4m",
             "-Xmx20m",
             "-XX:InitiatingHeapOccupancyPercent=100", // we don't want the additional GCs due to initial marking
             "-XX:+PrintGC",
             "-XX:+UnlockDiagnosticVMOptions",
             "-XX:G1HeapRegionSize=1M",
         };
         finalargs.addAll(Arrays.asList(defaultArgs));
         if (additionalArgs != null) {
             finalargs.addAll(Arrays.asList(additionalArgs));
         }
         finalargs.add(RunSystemGCs.class.getName());
         finalargs.add(String.valueOf(numGCs));
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
             finalargs.toArray(new String[0]));
         OutputAnalyzer output = new OutputAnalyzer(pb.start());
         output.shouldHaveExitValue(0);
         String result = output.getStdout();
         return result;
     }
     private static void expectStatistics(String result, int expectedCumulative, int expectedPeriodic) throws Exception {
         int actualTotal = result.split("Concurrent RS processed").length - 1;
         int actualCumulative = result.split("Cumulative RS summary").length - 1;
         if (expectedCumulative != actualCumulative) {
             throw new Exception("Incorrect amount of RSet summaries at the end. Expected " + expectedCumulative + ", got " + actualCumulative);
         }
         if (expectedPeriodic != (actualTotal - actualCumulative)) {
             throw new Exception("Incorrect amount of per-period RSet summaries at the end. Expected " + expectedPeriodic + ", got " + (actualTotal - actualCumulative));
         }
     }
     public static void main(String[] args) throws Exception {
         String result;
         // no RSet statistics output
         result = runTest(null, 0);
         expectStatistics(result, 0, 0);
         // no RSet statistics output
         result = runTest(null, 2);
         expectStatistics(result, 0, 0);
         // no RSet statistics output
         result = runTest(new String[] { "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
         expectStatistics(result, 0, 0);
         // single RSet statistics output at the end
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 0);
         expectStatistics(result, 1, 0);
         // single RSet statistics output at the end
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats" }, 2);
         expectStatistics(result, 1, 0);
         // single RSet statistics output
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 0);
         expectStatistics(result, 1, 0);
         // two times RSet statistics output
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 1);
         expectStatistics(result, 1, 1);
         // four times RSet statistics output
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=1" }, 3);
         expectStatistics(result, 1, 3);
         // three times RSet statistics output
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=2" }, 3);
         expectStatistics(result, 1, 2);
         // single RSet statistics output
         result = runTest(new String[] { "-XX:+G1SummarizeRSetStats", "-XX:G1SummarizeRSetStatsPeriod=100" }, 3);
         expectStatistics(result, 1, 1);
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/g1/TestSummarizeRSetStats.java@34aa07e92d22 (annotated)

test/gc/g1/TestSummarizeRSetStats.java