author | lkorinth |
Wed, 13 Nov 2019 11:37:29 +0100 | |
changeset 59053 | ba6c248cae19 |
parent 55610 | 47fdb5b0fa41 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2019, 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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package gc.arguments; |
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/* |
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* @test TestNewSizeFlags |
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* @key gc |
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* @bug 8025166 |
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* @summary Verify that young gen size conforms values specified by NewSize, MaxNewSize and Xmn options |
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* @requires vm.gc != "Z" & vm.gc != "Shenandoah" |
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* @library /test/lib |
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* @library / |
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* @modules java.base/jdk.internal.misc |
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* java.management |
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* @build sun.hotspot.WhiteBox |
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox |
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* @run driver/timeout=240 gc.arguments.TestNewSizeFlags |
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*/ |
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import java.io.IOException; |
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import java.lang.management.MemoryUsage; |
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import java.util.Arrays; |
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import java.util.Collections; |
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import java.util.LinkedList; |
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import jdk.test.lib.process.OutputAnalyzer; |
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import jdk.test.lib.process.ProcessTools; |
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import jdk.test.lib.Utils; |
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import sun.hotspot.WhiteBox; |
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public class TestNewSizeFlags { |
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public static final long M = 1024 * 1024; |
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public static void main(String args[]) throws Exception { |
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LinkedList<String> options = new LinkedList<>( |
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Arrays.asList(Utils.getFilteredTestJavaOpts("(-Xm[nsx][^ ]+)|" |
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+ "(-XX:(Max)?((New)|" |
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+ "(Heap))((Size)|" |
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+ "(Ratio))=[^ ]+)")) |
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); |
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// Test NewSize and MaxNewSize |
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testNewSizeFlags(20 * M, 10 * M, 30 * M, 40 * M, options, false); |
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testNewSizeFlags(10 * M, 20 * M, 30 * M, 80 * M, options, false); |
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testNewSizeFlags(-1, 20 * M, 30 * M, 40 * M, options, false); |
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testNewSizeFlags(10 * M, -1, 30 * M, 40 * M, options, false); |
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testNewSizeFlags(20 * M, 20 * M, 30 * M, 40 * M, options, false); |
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testNewSizeFlags(20 * M, 30 * M, 40 * M, 50 * M, options, false); |
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testNewSizeFlags(30 * M, 100 * M, 150 * M, 200 * M, options, false); |
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testNewSizeFlags(20 * M, 30 * M, 128 * M, 128 * M, options, false); |
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// Test -Xmn |
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testXmnFlags(0, 30 * M, 40 * M, options, true); |
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testXmnFlags(20 * M, 30 * M, 40 * M, options, false); |
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testXmnFlags(50 * M, 70 * M, 100 * M, options, false); |
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} |
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/** |
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* Verify that NewSize and MaxNewSize flags affect young gen size. |
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* |
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* @param newSize value of NewSize option, omitted if negative |
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* @param maxNewSize value of MaxNewSize option, omitted if negative |
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* @param heapSize value of HeapSize option |
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* @param maxHeapSize value of MaxHeapSize option |
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* @param options additional options for JVM |
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* @param failureExpected true if JVM should fail with passed heap size options |
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*/ |
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public static void testNewSizeFlags(long newSize, long maxNewSize, |
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long heapSize, long maxHeapSize, |
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LinkedList<String> options, |
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boolean failureExpected) throws Exception { |
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long expectedNewSize = newSize; |
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long expectedMaxNewSize = (maxNewSize >= 0 ? Math.max(maxNewSize, newSize) : maxNewSize); |
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testVMOptions(newSize, maxNewSize, |
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heapSize, maxHeapSize, |
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expectedNewSize, expectedMaxNewSize, |
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options, failureExpected); |
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} |
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/** |
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* Verify that -Xmn flag affect young gen size. |
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* |
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* @param mnValue value of -Xmn option |
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* @param heapSize value of HeapSize option |
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* @param maxHeapSize value of MaxHeapSize option |
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* @param options additional options for JVM |
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* @param failureExpected true if JVM should fail with passed heap size options |
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*/ |
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public static void testXmnFlags(long mnValue, |
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long heapSize, long maxHeapSize, |
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LinkedList<String> options, |
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boolean failureExpected) throws Exception { |
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LinkedList<String> newOptions = new LinkedList<>(options); |
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newOptions.add("-Xmn" + mnValue); |
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testVMOptions(-1, -1, |
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heapSize, maxHeapSize, |
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mnValue, mnValue, |
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newOptions, failureExpected); |
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} |
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|
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/** |
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* Verify that NewSize and MaxNewSize flags affect young gen size. |
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* |
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* @param newSize value of NewSize option, omitted if negative |
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* @param maxNewSize value of MaxNewSize option, omitted if negative |
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* @param heapSize value of HeapSize option |
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* @param maxHeapSize value of MaxHeapSize option |
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* @param expectedNewSize expected initial young gen size |
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* @param expectedMaxNewSize expected max young gen size |
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* @param options additional options for JVM |
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* @param failureExpected true if JVM should fail with passed heap size options |
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*/ |
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public static void testVMOptions(long newSize, long maxNewSize, |
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long heapSize, long maxHeapSize, |
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long expectedNewSize, long expectedMaxNewSize, |
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LinkedList<String> options, boolean failureExpected) throws Exception { |
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OutputAnalyzer analyzer = startVM(options, newSize, maxNewSize, heapSize, maxHeapSize, expectedNewSize, expectedMaxNewSize); |
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|
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if (failureExpected) { |
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analyzer.shouldHaveExitValue(1); |
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analyzer.shouldMatch("(Error occurred during initialization of VM)|" |
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+ "(Error: Could not create the Java Virtual Machine.)"); |
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} else { |
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analyzer.shouldHaveExitValue(0); |
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} |
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} |
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|
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private static OutputAnalyzer startVM(LinkedList<String> options, |
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long newSize, long maxNewSize, |
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long heapSize, long maxHeapSize, |
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long expectedNewSize, long expectedMaxNewSize) throws Exception, IOException { |
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LinkedList<String> vmOptions = new LinkedList<>(options); |
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Collections.addAll(vmOptions, |
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"-Xbootclasspath/a:.", |
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"-XX:+UnlockDiagnosticVMOptions", |
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"-XX:+WhiteBoxAPI", |
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(newSize >= 0 ? "-XX:NewSize=" + newSize : ""), |
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(maxNewSize >= 0 ? "-XX:MaxNewSize=" + maxNewSize : ""), |
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"-Xmx" + maxHeapSize, |
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"-Xms" + heapSize, |
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"-XX:GCLockerEdenExpansionPercent=0", |
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"-XX:-UseLargePages", |
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NewSizeVerifier.class.getName(), |
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Long.toString(expectedNewSize), |
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Long.toString(expectedMaxNewSize), |
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Long.toString(heapSize), |
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Long.toString(maxHeapSize) |
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); |
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vmOptions.removeIf(String::isEmpty); |
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ProcessBuilder procBuilder = GCArguments.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()])); |
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OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start()); |
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return analyzer; |
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} |
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|
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/** |
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* NewSizeVerifier checks that initial young gen size is equal to expected |
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* regardful to alignment and that young gen size will not be greater than |
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* expected max size. |
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* In order to verify that young gen size will not be greater then expected |
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* max size, NewSizeVerifier do some object allocation to force garbage |
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* collection and heap expansion. |
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*/ |
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public static class NewSizeVerifier { |
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|
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private static final WhiteBox WB = WhiteBox.getWhiteBox(); |
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private static final GCTypes.YoungGCType YOUNG_GC_TYPE = GCTypes.YoungGCType.getYoungGCType(); |
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private static final long HEAP_SPACE_ALIGNMENT = WB.getHeapSpaceAlignment(); |
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private static final long HEAP_ALIGNMENT = WB.getHeapAlignment(); |
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private static final long PS_VIRTUAL_SPACE_ALIGNMENT = |
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(YOUNG_GC_TYPE == GCTypes.YoungGCType.PSNew) ? WB.psVirtualSpaceAlignment() : 0; |
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|
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public static final int ARRAY_LENGTH = 100; |
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public static final int CHUNK_SIZE = 1024; |
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public static final int MAX_ITERATIONS = 10; |
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public static byte garbage[][] = new byte[ARRAY_LENGTH][]; |
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|
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public static void main(String args[]) throws Exception { |
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if (args.length != 4) { |
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throw new IllegalArgumentException("Expected 4 args: <expectedNewSize> <expectedMaxNewSize> <initialHeapSize> <maxHeapSize>"); |
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} |
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final long newSize = Long.valueOf(args[0]); |
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final long maxNewSize = Long.valueOf(args[1]); |
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final long initialHeapSize = Long.valueOf(args[2]); |
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final long maxHeapSize = Long.valueOf(args[3]); |
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|
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// verify initial size |
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verifyNewSize(newSize, maxNewSize, initialHeapSize, maxHeapSize); |
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|
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// force GC and verify that size is still correct |
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AllocationHelper allocator = new AllocationHelper(MAX_ITERATIONS, ARRAY_LENGTH, CHUNK_SIZE, () -> (verifyNewSize(newSize, maxNewSize, initialHeapSize, maxHeapSize))); |
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allocator.allocateMemoryAndVerifyNoOOME(); |
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} |
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|
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/** |
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* Verify that actual young gen size conforms NewSize and MaxNewSize values. |
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*/ |
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public static Void verifyNewSize(long newSize, long maxNewSize, |
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long initialHeapSize, long maxHeapSize) { |
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long alignedNewSize = alignGenSize(newSize); |
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long alignedMaxNewSize = alignGenSize(maxNewSize); |
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long alignedXms = alignHeapSize(initialHeapSize); |
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long alignedXmx = alignHeapSize(maxHeapSize); |
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|
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MemoryUsage youngGenUsage = getYoungGenUsage(); |
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long initSize = youngGenUsage.getInit(); |
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long commitedSize = youngGenUsage.getCommitted(); |
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long maxSize = youngGenUsage.getMax(); |
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|
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if (newSize != -1) { |
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if (initSize < alignedNewSize) { |
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throw new RuntimeException("initial new size < NewSize value: " |
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+ initSize + " < " + alignedNewSize); |
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} |
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|
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if (commitedSize < alignedNewSize) { |
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throw new RuntimeException("actual new size < NewSize value: " |
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+ commitedSize + " < " + alignedNewSize); |
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} |
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|
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// for G1 max new size == committed new size |
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if (YOUNG_GC_TYPE != GCTypes.YoungGCType.G1 |
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&& maxSize < alignedNewSize) { |
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throw new RuntimeException("max new size < NewSize value: " |
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+ maxSize + " < " + alignedNewSize); |
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} |
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} |
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|
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if (maxNewSize != -1) { |
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if (initSize > alignedMaxNewSize) { |
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throw new RuntimeException("initial new size > MaxNewSize value: " |
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+ initSize + " > " + alignedMaxNewSize); |
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} |
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|
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if (commitedSize > alignedMaxNewSize) { |
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throw new RuntimeException("actual new size > MaxNewSize value: " |
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+ commitedSize + " > " + alignedMaxNewSize); |
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} |
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|
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if (alignedXms != alignedXmx) { |
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if (YOUNG_GC_TYPE != GCTypes.YoungGCType.G1 |
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&& maxSize != alignedMaxNewSize) { |
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throw new RuntimeException("max new size != MaxNewSize value: " |
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+ maxSize + " != " + alignedMaxNewSize); |
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} |
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} else { |
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if (YOUNG_GC_TYPE != GCTypes.YoungGCType.G1 |
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&& maxSize != alignedNewSize) { |
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throw new RuntimeException("max new size != NewSize for case InitialHeapSize == MaxHeapSize value: " |
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+ maxSize + " != " + alignedNewSize + " HeapSize == " + alignedXms); |
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} |
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} |
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} |
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return null; |
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} |
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|
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/** |
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* Get young gen memory usage. |
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* |
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* For G1 it is EdenUsage + SurvivorUsage, |
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* for other GCs it is EdenUsage + 2 * SurvivorUsage. |
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* For G1 max value is just LONG_MAX. |
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* For all GCs used value is 0. |
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*/ |
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private static MemoryUsage getYoungGenUsage() { |
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MemoryUsage edenUsage = HeapRegionUsageTool.getEdenUsage(); |
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MemoryUsage survivorUsage = HeapRegionUsageTool.getSurvivorUsage(); |
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long edenUsageInit = edenUsage.getInit(); |
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long edenUsageCommited = edenUsage.getCommitted(); |
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long survivorUsageInit = survivorUsage.getInit(); |
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long survivorUsageCommited = survivorUsage.getCommitted(); |
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|
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if (YOUNG_GC_TYPE == GCTypes.YoungGCType.G1) { |
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return new MemoryUsage(edenUsageInit + survivorUsageInit, 0, |
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edenUsageCommited + survivorUsageCommited, Long.MAX_VALUE); |
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} else { |
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return new MemoryUsage(edenUsageInit + survivorUsageInit * 2, 0, |
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edenUsageCommited + survivorUsageCommited * 2, |
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edenUsage.getMax() + survivorUsage.getMax() * 2); |
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} |
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} |
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|
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/** |
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* Align generation size regardful to used young GC. |
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*/ |
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public static long alignGenSize(long value) { |
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switch (YOUNG_GC_TYPE) { |
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case DefNew: |
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return HeapRegionUsageTool.alignDown(value, HEAP_SPACE_ALIGNMENT); |
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case PSNew: |
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return HeapRegionUsageTool.alignUp(HeapRegionUsageTool.alignDown(value, |
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HEAP_SPACE_ALIGNMENT), |
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PS_VIRTUAL_SPACE_ALIGNMENT); |
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case G1: |
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return HeapRegionUsageTool.alignUp(value, WB.g1RegionSize()); |
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default: |
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throw new RuntimeException("Unexpected young GC type"); |
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} |
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} |
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|
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/** |
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* Align heap size. |
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*/ |
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public static long alignHeapSize(long value){ |
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return HeapRegionUsageTool.alignUp(value,HEAP_ALIGNMENT); |
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326 |
} |
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} |
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} |