author | ctornqvi |
Fri, 19 Aug 2016 10:06:30 -0400 | |
changeset 40631 | ed82623d7831 |
parent 39993 | 82256382f7a1 |
child 41705 | 332239c052cc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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import java.util.regex.Matcher; |
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import java.util.regex.Pattern; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import jdk.test.lib.process.ProcessTools; |
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import jdk.test.lib.process.OutputAnalyzer; |
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import sun.hotspot.WhiteBox; |
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class ErgoArgsPrinter { |
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public static void main(String[] args) throws Exception { |
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WhiteBox wb = WhiteBox.getWhiteBox(); |
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wb.printHeapSizes(); |
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} |
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} |
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final class MinInitialMaxValues { |
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public long minHeapSize; |
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public long initialHeapSize; |
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public long maxHeapSize; |
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public long spaceAlignment; |
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public long heapAlignment; |
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} |
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class TestMaxHeapSizeTools { |
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public static void checkMinInitialMaxHeapFlags(String gcflag) throws Exception { |
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checkInvalidMinInitialHeapCombinations(gcflag); |
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checkValidMinInitialHeapCombinations(gcflag); |
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checkInvalidInitialMaxHeapCombinations(gcflag); |
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checkValidInitialMaxHeapCombinations(gcflag); |
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} |
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public static void checkMinInitialErgonomics(String gcflag) throws Exception { |
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// heap sizing ergonomics use the value NewSize + OldSize as default values |
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// for ergonomics calculation. Retrieve these values. |
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long[] values = new long[2]; |
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getNewOldSize(gcflag, values); |
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// we check cases with values smaller and larger than this default value. |
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long newPlusOldSize = values[0] + values[1]; |
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long smallValue = newPlusOldSize / 2; |
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long largeValue = newPlusOldSize * 2; |
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long maxHeapSize = largeValue + (2 * 1024 * 1024); |
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// -Xms is not set |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize }, values, -1, -1); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-XX:InitialHeapSize=0" }, values, -1, -1); |
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// -Xms is set to zero |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0" }, values, -1, -1); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + smallValue }, values, -1, smallValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=" + largeValue }, values, -1, largeValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms0", "-XX:InitialHeapSize=0" }, values, -1, -1); |
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// -Xms is set to small value |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue }, values, -1, -1); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + smallValue }, values, smallValue, smallValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=" + largeValue }, values, smallValue, largeValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + smallValue, "-XX:InitialHeapSize=0" }, values, smallValue, -1); |
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// -Xms is set to large value |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue }, values, largeValue, largeValue); |
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checkErgonomics(new String[] { gcflag, "-Xmx" + maxHeapSize, "-Xms" + largeValue, "-XX:InitialHeapSize=0" }, values, largeValue, -1); |
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} |
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private static long align_up(long value, long alignment) { |
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long alignmentMinusOne = alignment - 1; |
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return (value + alignmentMinusOne) & ~alignmentMinusOne; |
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} |
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private static void getNewOldSize(String gcflag, long[] values) throws Exception { |
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(gcflag, |
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"-XX:+PrintFlagsFinal", "-version"); |
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OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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output.shouldHaveExitValue(0); |
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String stdout = output.getStdout(); |
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values[0] = getFlagValue(" NewSize", stdout); |
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values[1] = getFlagValue(" OldSize", stdout); |
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} |
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public static void checkGenMaxHeapErgo(String gcflag) throws Exception { |
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TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 4); |
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TestMaxHeapSizeTools.checkGenMaxHeapSize(gcflag, 5); |
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} |
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private static void checkInvalidMinInitialHeapCombinations(String gcflag) throws Exception { |
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expectError(new String[] { gcflag, "-XX:InitialHeapSize=1023K", "-version" }); |
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expectError(new String[] { gcflag, "-Xms64M", "-XX:InitialHeapSize=32M", "-version" }); |
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} |
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private static void checkValidMinInitialHeapCombinations(String gcflag) throws Exception { |
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expectValid(new String[] { gcflag, "-XX:InitialHeapSize=1024K", "-version" }); |
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expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms4M", "-version" }); |
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expectValid(new String[] { gcflag, "-Xms4M", "-XX:InitialHeapSize=8M", "-version" }); |
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expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms8M", "-version" }); |
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// the following is not an error as -Xms sets both minimal and initial heap size |
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expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-Xms8M", "-version" }); |
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} |
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private static void checkInvalidInitialMaxHeapCombinations(String gcflag) throws Exception { |
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expectError(new String[] { gcflag, "-XX:MaxHeapSize=2047K", "-version" }); |
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expectError(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=8M", "-version" }); |
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expectError(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-XX:MaxHeapSize=4M", "-version" }); |
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} |
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private static void checkValidInitialMaxHeapCombinations(String gcflag) throws Exception { |
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expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-XX:MaxHeapSize=8M", "-version" }); |
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expectValid(new String[] { gcflag, "-XX:MaxHeapSize=8M", "-XX:InitialHeapSize=4M", "-version" }); |
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expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=4M", "-version" }); |
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// a value of "0" for initial heap size means auto-detect |
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expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=0M", "-version" }); |
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} |
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private static long valueAfter(String source, String match) { |
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int start = source.indexOf(match) + match.length(); |
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String tail = source.substring(start).split(" ")[0]; |
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return Long.parseLong(tail); |
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} |
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/** |
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* Executes a new VM process with the given class and parameters. |
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* @param vmargs Arguments to the VM to run |
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* @param classname Name of the class to run |
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* @param arguments Arguments to the class |
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* @param useTestDotJavaDotOpts Use test.java.opts as part of the VM argument string |
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* @return The OutputAnalyzer with the results for the invocation. |
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*/ |
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public static OutputAnalyzer runWhiteBoxTest(String[] vmargs, String classname, String[] arguments, boolean useTestDotJavaDotOpts) throws Exception { |
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ArrayList<String> finalargs = new ArrayList<String>(); |
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String[] whiteboxOpts = new String[] { |
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"-Xbootclasspath/a:.", |
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"-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI", |
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"-cp", System.getProperty("java.class.path"), |
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}; |
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if (useTestDotJavaDotOpts) { |
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// System.getProperty("test.java.opts") is '' if no options is set, |
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// we need to skip such a result |
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String[] externalVMOpts = new String[0]; |
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if (System.getProperty("test.java.opts") != null && System.getProperty("test.java.opts").length() != 0) { |
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externalVMOpts = System.getProperty("test.java.opts").split(" "); |
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} |
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finalargs.addAll(Arrays.asList(externalVMOpts)); |
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} |
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finalargs.addAll(Arrays.asList(vmargs)); |
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finalargs.addAll(Arrays.asList(whiteboxOpts)); |
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finalargs.add(classname); |
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finalargs.addAll(Arrays.asList(arguments)); |
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(finalargs.toArray(new String[0])); |
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OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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output.shouldHaveExitValue(0); |
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return output; |
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} |
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private static void getMinInitialMaxHeap(String[] args, MinInitialMaxValues val) throws Exception { |
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OutputAnalyzer output = runWhiteBoxTest(args, ErgoArgsPrinter.class.getName(), new String[] {}, false); |
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// the output we watch for has the following format: |
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// |
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// "Minimum heap X Initial heap Y Maximum heap Z Min alignment A Max Alignment B" |
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// |
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// where A, B, X, Y and Z are sizes in bytes. |
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// Unfortunately there is no other way to retrieve the minimum heap size and |
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// the alignments. |
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Matcher m = Pattern.compile("Minimum heap \\d+ Initial heap \\d+ Maximum heap \\d+ Space alignment \\d+ Heap alignment \\d+"). |
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matcher(output.getStdout()); |
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if (!m.find()) { |
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throw new RuntimeException("Could not find heap size string."); |
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} |
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String match = m.group(); |
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// actual values |
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val.minHeapSize = valueAfter(match, "Minimum heap "); |
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val.initialHeapSize = valueAfter(match, "Initial heap "); |
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val.maxHeapSize = valueAfter(match, "Maximum heap "); |
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val.spaceAlignment = valueAfter(match, "Space alignment "); |
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val.heapAlignment = valueAfter(match, "Heap alignment "); |
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} |
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/** |
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* Verify whether the VM automatically synchronizes minimum and initial heap size if only |
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* one is given for the GC specified. |
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*/ |
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public static void checkErgonomics(String[] args, long[] newoldsize, |
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long expectedMin, long expectedInitial) throws Exception { |
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MinInitialMaxValues v = new MinInitialMaxValues(); |
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getMinInitialMaxHeap(args, v); |
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if ((expectedMin != -1) && (align_up(expectedMin, v.heapAlignment) != v.minHeapSize)) { |
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throw new RuntimeException("Actual minimum heap size of " + v.minHeapSize + |
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" differs from expected minimum heap size of " + expectedMin); |
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} |
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if ((expectedInitial != -1) && (align_up(expectedInitial, v.heapAlignment) != v.initialHeapSize)) { |
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throw new RuntimeException("Actual initial heap size of " + v.initialHeapSize + |
231 |
" differs from expected initial heap size of " + expectedInitial); |
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232 |
} |
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// always check the invariant min <= initial <= max heap size |
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235 |
if (!(v.minHeapSize <= v.initialHeapSize && v.initialHeapSize <= v.maxHeapSize)) { |
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throw new RuntimeException("Inconsistent min/initial/max heap sizes, they are " + |
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v.minHeapSize + "/" + v.initialHeapSize + "/" + v.maxHeapSize); |
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} |
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} |
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/** |
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* Verify whether the VM respects the given maximum heap size in MB for the |
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* GC specified. |
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* @param gcflag The garbage collector to test as command line flag. E.g. -XX:+UseG1GC |
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* @param maxHeapSize the maximum heap size to verify, in MB. |
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*/ |
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public static void checkGenMaxHeapSize(String gcflag, long maxHeapsize) throws Exception { |
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final long K = 1024; |
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MinInitialMaxValues v = new MinInitialMaxValues(); |
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getMinInitialMaxHeap(new String[] { gcflag, "-XX:MaxHeapSize=" + maxHeapsize + "M" }, v); |
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long expectedHeapSize = align_up(maxHeapsize * K * K, v.heapAlignment); |
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long actualHeapSize = v.maxHeapSize; |
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256 |
if (actualHeapSize > expectedHeapSize) { |
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257 |
throw new RuntimeException("Heap has " + actualHeapSize + |
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258 |
" bytes, expected to be less than " + expectedHeapSize); |
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} |
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} |
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private static long getFlagValue(String flag, String where) { |
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Matcher m = Pattern.compile(flag + "\\s+:?=\\s+\\d+").matcher(where); |
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if (!m.find()) { |
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throw new RuntimeException("Could not find value for flag " + flag + " in output string"); |
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} |
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String match = m.group(); |
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return Long.parseLong(match.substring(match.lastIndexOf(" ") + 1, match.length())); |
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} |
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private static void shouldContainOrNot(OutputAnalyzer output, boolean contains, String message) throws Exception { |
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if (contains) { |
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output.shouldContain(message); |
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} else { |
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275 |
output.shouldNotContain(message); |
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} |
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} |
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private static void expect(String[] flags, boolean hasWarning, boolean hasError, int errorcode) throws Exception { |
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280 |
ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(flags); |
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OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
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shouldContainOrNot(output, hasWarning, "Warning"); |
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shouldContainOrNot(output, hasError, "Error"); |
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output.shouldHaveExitValue(errorcode); |
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} |
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287 |
private static void expectError(String[] flags) throws Exception { |
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288 |
expect(flags, false, true, 1); |
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289 |
} |
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291 |
private static void expectValid(String[] flags) throws Exception { |
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292 |
expect(flags, false, false, 0); |
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293 |
} |
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294 |
} |
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