Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * 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.

  */

 /*

  * Common helpers for TestSummarizeRSetStats* tests

  */

 import sun.management.ManagementFactoryHelper;

 import com.sun.management.HotSpotDiagnosticMXBean;

 import com.sun.management.VMOption;

 import com.oracle.java.testlibrary.*;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 import java.lang.Thread;

 import java.util.ArrayList;

 import java.util.Arrays;

 class VerifySummaryOutput {

     // 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 TestSummarizeRSetStatsTools {

     // the VM is currently run using G1GC, i.e. trying to test G1 functionality.

     public static boolean testingG1GC() {

         HotSpotDiagnosticMXBean diagnostic = ManagementFactoryHelper.getDiagnosticMXBean();

         VMOption option = diagnostic.getVMOption("UseG1GC");

         if (option.getValue().equals("false")) {

           System.out.println("Skipping this test. It is only a G1 test.");

           return false;

         }

         return true;

     }

     public static String runTest(String[] additionalArgs, int numGCs) throws Exception {

         ArrayList<String> finalargs = new ArrayList<String>();

         String[] defaultArgs = new String[] {

             "-XX:+UseG1GC",

             "-XX:+UseCompressedOops",

             "-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(VerifySummaryOutput.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 checkCounts(int expected, int actual, String which) throws Exception {

         if (expected != actual) {

             throw new Exception("RSet summaries mention " + which + " regions an incorrect number of times. Expected " + expected + ", got " + actual);

         }

     }

     public static void expectPerRegionRSetSummaries(String result, int expectedCumulative, int expectedPeriodic) throws Exception {

         expectRSetSummaries(result, expectedCumulative, expectedPeriodic);

         int actualYoung = result.split("Young regions").length - 1;

         int actualHumonguous = result.split("Humonguous regions").length - 1;

         int actualFree = result.split("Free regions").length - 1;

         int actualOther = result.split("Old regions").length - 1;

         // the strings we check for above are printed four times per summary

         int expectedPerRegionTypeInfo = (expectedCumulative + expectedPeriodic) * 4;

         checkCounts(expectedPerRegionTypeInfo, actualYoung, "Young");

         checkCounts(expectedPerRegionTypeInfo, actualHumonguous, "Humonguous");

         checkCounts(expectedPerRegionTypeInfo, actualFree, "Free");

         checkCounts(expectedPerRegionTypeInfo, actualOther, "Old");

     }

     public static void expectRSetSummaries(String result, int expectedCumulative, int expectedPeriodic) throws Exception {

         int actualTotal = result.split("concurrent refinement").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));

         }

     }

 }