jdk8-mips64-public/hotspot: test/gc/arguments/TestMaxHeapSizeTools.java@1abddcd038df (annotated)

test/gc/arguments/TestMaxHeapSizeTools.java@1abddcd038df (annotated)

test/gc/arguments/TestMaxHeapSizeTools.java

Wed, 05 Feb 2014 10:09:54 +0100

author: ehelin
date: Wed, 05 Feb 2014 10:09:54 +0100
changeset 9622: 1abddcd038df
parent 6085: 8f07aa079343
child 9637: eef07cd490d4
permissions: -rw-r--r--

8028254: gc/arguments/TestMinInitialErgonomics.java failed with unexpected initial heap size
Reviewed-by: brutisso, tschatzl, sjohanss

 /*
 * 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.
 */
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.ArrayList;
 import java.util.Arrays;
 import com.oracle.java.testlibrary.*;
 import sun.hotspot.WhiteBox;
 class ErgoArgsPrinter {
   public static void main(String[] args) throws Exception {
     WhiteBox wb = WhiteBox.getWhiteBox();
     wb.printHeapSizes();
   }
 }
 final class MinInitialMaxValues {
   public long minHeapSize;
   public long initialHeapSize;
   public long maxHeapSize;
   public long spaceAlignment;
   public long heapAlignment;
 }
 class TestMaxHeapSizeTools {
   public static void checkMinInitialMaxHeapFlags(String gcflag) throws Exception {
     checkInvalidMinInitialHeapCombinations(gcflag);
     checkValidMinInitialHeapCombinations(gcflag);
     checkInvalidInitialMaxHeapCombinations(gcflag);
     checkValidInitialMaxHeapCombinations(gcflag);
   }
   public static void checkMinInitialErgonomics(String gcflag) throws Exception {
     // heap sizing ergonomics use the value NewSize + OldSize as default values
     // for ergonomics calculation. Retrieve these values.
     long[] values = new long[2];
     getNewOldSize(gcflag, values);
     // we check cases with values smaller and larger than this default value.
     long newPlusOldSize = values[0] + values[1];
     long smallValue = newPlusOldSize / 2;
     long largeValue = newPlusOldSize * 2;
     long maxHeapSize = largeValue + (2 * 1024 * 1024);
     // -Xms is not set
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize }, values, -1, -1);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=0" }, values, -1, -1);
     // -Xms is set to zero
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0" }, values, -1, -1);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=0" }, values, -1, -1);
     // -Xms is set to small value
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue }, values, -1, -1);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + largeValue }, values, smallValue, largeValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=0" }, values, smallValue, -1);
     // -Xms is set to large value
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue }, values, largeValue, largeValue);
     checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue, "-XX:InitialHeapSize=0" }, values, largeValue, -1);
   }
   private static long align_up(long value, long alignment) {
     long alignmentMinusOne = alignment - 1;
     return (value + alignmentMinusOne) & ~alignmentMinusOne;
   }
   private static void getNewOldSize(String gcflag, long[] values) throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(gcflag,
       "-XX:+PrintFlagsFinal", "-version");
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
     output.shouldHaveExitValue(0);
     String stdout = output.getStdout();
     values[0] = getFlagValue(" NewSize", stdout);
     values[1] = getFlagValue(" OldSize", stdout);
   }
   public static void checkGenMaxHeapErgo(String gcflag) throws Exception {
     TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 3);
     TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 4);
     TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 5);
   }
   private static void checkInvalidMinInitialHeapCombinations(String gcflag) throws Exception {
     expectError(new String[] { gcflag, "-Xms8M", "-XX:InitialHeapSize=4M", "-version" });
   }
   private static void checkValidMinInitialHeapCombinations(String gcflag) throws Exception {
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms4M", "-version" });
     expectValid(new String[] { gcflag, "-Xms4M", "-XX:InitialHeapSize=8M", "-version" });
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms8M", "-version" });
     // the following is not an error as -Xms sets both minimal and initial heap size
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-Xms8M", "-version" });
   }
   private static void checkInvalidInitialMaxHeapCombinations(String gcflag) throws Exception {
     expectError(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=8M", "-version" });
     expectError(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-XX:MaxHeapSize=4M", "-version" });
   }
   private static void checkValidInitialMaxHeapCombinations(String gcflag) throws Exception {
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-XX:MaxHeapSize=8M", "-version" });
     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=8M", "-XX:InitialHeapSize=4M", "-version" });
     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=4M", "-version" });
     // a value of "0" for initial heap size means auto-detect
     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=0M", "-version" });
   }
   private static long valueAfter(String source, String match) {
     int start = source.indexOf(match) + match.length();
     String tail = source.substring(start).split(" ")[0];
     return Long.parseLong(tail);
   }
   /**
    * Executes a new VM process with the given class and parameters.
    * @param vmargs Arguments to the VM to run
    * @param classname Name of the class to run
    * @param arguments Arguments to the class
    * @param useTestDotJavaDotOpts Use test.java.opts as part of the VM argument string
    * @return The OutputAnalyzer with the results for the invocation.
    */
   public static OutputAnalyzer runWhiteBoxTest(String[] vmargs, String classname, String[] arguments, boolean useTestDotJavaDotOpts) throws Exception {
     ArrayList<String> finalargs = new ArrayList<String>();
     String[] whiteboxOpts = new String[] {
       "-Xbootclasspath/a:.",
       "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",
       "-cp", System.getProperty("java.class.path"),
     };
     if (useTestDotJavaDotOpts) {
       // System.getProperty("test.java.opts") is '' if no options is set,
       // we need to skip such a result
       String[] externalVMOpts = new String[0];
       if (System.getProperty("test.java.opts") != null && System.getProperty("test.java.opts").length() != 0) {
         externalVMOpts = System.getProperty("test.java.opts").split(" ");
       }
       finalargs.addAll(Arrays.asList(externalVMOpts));
     }
     finalargs.addAll(Arrays.asList(vmargs));
     finalargs.addAll(Arrays.asList(whiteboxOpts));
     finalargs.add(classname);
     finalargs.addAll(Arrays.asList(arguments));
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0]));
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
     output.shouldHaveExitValue(0);
     return output;
   }
   private static void getMinInitialMaxHeap(String[] args, MinInitialMaxValues val) throws Exception {
     OutputAnalyzer output = runWhiteBoxTest(args, ErgoArgsPrinter.class.getName(), new String[] {}, false);
     // the output we watch for has the following format:
     //
     // "Minimum heap X Initial heap Y Maximum heap Z Min alignment A Max Alignment B"
     //
     // where A, B, X, Y and Z are sizes in bytes.
     // Unfortunately there is no other way to retrieve the minimum heap size and
     // the alignments.
     Matcher m = Pattern.compile("Minimum heap \\d+ Initial heap \\d+ Maximum heap \\d+ Space alignment \\d+ Heap alignment \\d+").
       matcher(output.getStdout());
     if (!m.find()) {
       throw new RuntimeException("Could not find heap size string.");
     }
     String match = m.group();
     // actual values
     val.minHeapSize = valueAfter(match, "Minimum heap ");
     val.initialHeapSize = valueAfter(match, "Initial heap ");
     val.maxHeapSize = valueAfter(match, "Maximum heap ");
     val.spaceAlignment = valueAfter(match, "Space alignment ");
     val.heapAlignment = valueAfter(match, "Heap alignment ");
   }
   /**
    * Verify whether the VM automatically synchronizes minimum and initial heap size if only
    * one is given for the GC specified.
    */
   public static void checkErgonomics(String[] args, long[] newoldsize,
     long expectedMin, long expectedInitial) throws Exception {
     MinInitialMaxValues v = new MinInitialMaxValues();
     getMinInitialMaxHeap(args, v);
     if ((expectedMin != -1) && (align_up(expectedMin, v.heapAlignment) != v.minHeapSize)) {
       throw new RuntimeException("Actual minimum heap size of " + v.minHeapSize +
         " differs from expected minimum heap size of " + expectedMin);
     }
     if ((expectedInitial != -1) && (align_up(expectedInitial, v.heapAlignment) != v.initialHeapSize)) {
       throw new RuntimeException("Actual initial heap size of " + v.initialHeapSize +
         " differs from expected initial heap size of " + expectedInitial);
     }
     // always check the invariant min <= initial <= max heap size
     if (!(v.minHeapSize <= v.initialHeapSize && v.initialHeapSize <= v.maxHeapSize)) {
       throw new RuntimeException("Inconsistent min/initial/max heap sizes, they are " +
         v.minHeapSize + "/" + v.initialHeapSize + "/" + v.maxHeapSize);
     }
   }
   /**
    * Verify whether the VM respects the given maximum heap size in MB for the
    * GC specified.
    * @param gcflag The garbage collector to test as command line flag. E.g. -XX:+UseG1GC
    * @param maxHeapSize the maximum heap size to verify, in MB.
    */
   public static void checkGenMaxHeapSize(String gcflag, long maxHeapsize) throws Exception {
     final long K = 1024;
     MinInitialMaxValues v = new MinInitialMaxValues();
     getMinInitialMaxHeap(new String[] { gcflag, "-XX:MaxHeapSize=" + maxHeapsize + "M" }, v);
     long expectedHeapSize = align_up(maxHeapsize * K * K, v.heapAlignment);
     long actualHeapSize = v.maxHeapSize;
     if (actualHeapSize > expectedHeapSize) {
       throw new RuntimeException("Heap has " + actualHeapSize  +
         " bytes, expected to be less than " + expectedHeapSize);
     }
   }
   private static long getFlagValue(String flag, String where) {
     Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where);
     if (!m.find()) {
       throw new RuntimeException("Could not find value for flag " + flag + " in output string");
     }
     String match = m.group();
     return Long.parseLong(match.substring(match.lastIndexOf(" ") + 1, match.length()));
   }
   private static void shouldContainOrNot(OutputAnalyzer output, boolean contains, String message) throws Exception {
     if (contains) {
       output.shouldContain(message);
     } else {
       output.shouldNotContain(message);
     }
   }
   private static void expect(String[] flags, boolean hasWarning, boolean hasError, int errorcode) throws Exception {
     ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags);
     OutputAnalyzer output = new OutputAnalyzer(pb.start());
     shouldContainOrNot(output, hasWarning, "Warning");
     shouldContainOrNot(output, hasError, "Error");
     output.shouldHaveExitValue(errorcode);
   }
   private static void expectError(String[] flags) throws Exception {
     expect(flags, false, true, 1);
   }
   private static void expectValid(String[] flags) throws Exception {
     expect(flags, false, false, 0);
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/arguments/TestMaxHeapSizeTools.java@1abddcd038df (annotated)

test/gc/arguments/TestMaxHeapSizeTools.java