Mercurial > hg > graal-compiler
view test/gc/arguments/TestMaxHeapSizeTools.java @ 13345:0393767ae0fc
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author | Erik Eckstein <erik.eckstein@oracle.com> |
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date | Fri, 13 Dec 2013 16:40:41 +0100 |
parents | 8f07aa079343 |
children | 6827d470020d |
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/* * 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 minAlignment; public long maxAlignment; } 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+ Min alignment \\d+ Max 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.minAlignment = valueAfter(match, "Min alignment "); val.maxAlignment = valueAfter(match, "Max 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.minAlignment) != 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.minAlignment) != 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.maxAlignment); 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); } }