author | jlahoda |
Mon, 13 Feb 2017 09:37:26 +0100 | |
changeset 43772 | 4e5350b7be75 |
parent 41705 | 332239c052cc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 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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* @test TestMinAndInitialSurvivorRatioFlags |
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* @key gc |
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* @summary Verify that MinSurvivorRatio and InitialSurvivorRatio flags work |
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* @library /test/lib |
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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 main ClassFileInstaller sun.hotspot.WhiteBox |
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* @run driver TestMinAndInitialSurvivorRatioFlags |
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*/ |
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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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/* Test verifies that VM can start with any GC when MinSurvivorRatio and |
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* InitialSurvivorRatio flags passed and for Parallel GC it verifies that |
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* after start up survivor ratio equal to InitialSurvivorRatio value and |
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* that actual survivor ratio will never be less than MinSurvivorRatio. |
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*/ |
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public class TestMinAndInitialSurvivorRatioFlags { |
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|
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public static final long M = 1024 * 1024; |
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public static final long HEAP_SIZE = 200 * M; |
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public static final long NEW_SIZE = 100 * M; |
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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("-XX:[^ ]*SurvivorRatio=[^ ]+")) |
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); |
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testSurvivorRatio(5, -1, -1, options, true); |
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testSurvivorRatio(10, -1, -1, options, true); |
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testSurvivorRatio(-1, 5, 3, options, true); |
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testSurvivorRatio(-1, 15, 3, options, true); |
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testSurvivorRatio(-1, 15, 3, options, false); |
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testSurvivorRatio(-1, 10, 10, options, true); |
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testSurvivorRatio(-1, 3, 15, options, true); |
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testSurvivorRatio(-1, 3, 15, options, false); |
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} |
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/** |
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* Test that MinSurvivorRatio and InitialSurvivorRatio flags work. |
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* |
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* @param survivorRatio value for -XX:SurvivorRatio option, omitted if negative |
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* @param initRatio value for -XX:InitialSurvivorRatio option, omitted if negative |
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* @param minRatio value for -XX:MinSurvivorRatio option, omitted if negative |
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* @param options additional options for VM |
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* @param useAdaptiveSizePolicy turn on or off UseAdaptiveSizePolicy option |
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*/ |
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public static void testSurvivorRatio(int survivorRatio, |
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int initRatio, |
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int minRatio, |
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LinkedList<String> options, |
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boolean useAdaptiveSizePolicy) throws Exception { |
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|
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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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"-XX:MaxNewSize=" + NEW_SIZE, "-XX:NewSize=" + NEW_SIZE, |
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"-Xmx" + HEAP_SIZE, "-Xms" + HEAP_SIZE, |
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(survivorRatio >= 0 ? "-XX:SurvivorRatio=" + survivorRatio : ""), |
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(initRatio >= 0 ? "-XX:InitialSurvivorRatio=" + initRatio : ""), |
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(minRatio >= 0 ? "-XX:MinSurvivorRatio=" + minRatio : ""), |
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(useAdaptiveSizePolicy ? "-XX:+UseAdaptiveSizePolicy" : "-XX:-UseAdaptiveSizePolicy"), |
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SurvivorRatioVerifier.class.getName(), |
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Integer.toString(survivorRatio), |
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Integer.toString(initRatio), |
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Integer.toString(minRatio), |
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Boolean.toString(useAdaptiveSizePolicy) |
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); |
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vmOptions.removeIf((String p) -> p.isEmpty()); |
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ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()])); |
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OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start()); |
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analyzer.shouldHaveExitValue(0); |
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} |
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/** |
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* Class that verifies survivor ratio. |
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* Will be executed in tested VM. Checks initial size of eden and survivor paces with alignment. |
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*/ |
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public static class SurvivorRatioVerifier { |
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public static WhiteBox wb = WhiteBox.getWhiteBox(); |
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public static final int MAX_ITERATIONS = 10; |
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public static final int ARRAY_LENGTH = 10000; |
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public static final int CHUNK_SIZE = 10000; |
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|
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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: <survivorRatio> <initRatio> <minRatio> <useAdaptiveSizePolicy>"); |
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} |
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final int survivorRatio = Integer.valueOf(args[0]); |
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final int initRatio = Integer.valueOf(args[1]); |
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final int minRatio = Integer.valueOf(args[2]); |
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final boolean useAdaptiveSizePolicy = Boolean.valueOf(args[3]); |
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|
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// we stop testing only here to ensure that JVM will accept |
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// both MinSurvivorRatio and InitialSurvivorRatio regardles to GC |
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if (GCTypes.YoungGCType.getYoungGCType() != GCTypes.YoungGCType.PSNew) { |
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System.out.println("Test is only applicable to Parallel GC"); |
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return; |
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} |
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|
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// verify initial survivor ratio |
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verifySurvivorRatio(survivorRatio, initRatio, minRatio, useAdaptiveSizePolicy, true); |
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|
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// force GC |
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AllocationHelper allocator = new AllocationHelper(MAX_ITERATIONS, ARRAY_LENGTH, CHUNK_SIZE, |
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() -> (verifySurvivorRatio(survivorRatio, initRatio, minRatio, useAdaptiveSizePolicy, false))); |
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allocator.allocateMemoryAndVerify(); |
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} |
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|
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/** |
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* Verify actual survivor ratio. |
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* |
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* @param survivorRatio value of SurvivorRatio option, omitted if negative |
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* @param initRatio value of InitialSurvivorRatio option, omitted if negative |
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* @param minRatio value of MinSurvivorRatio option, omitted if negative |
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* @param useAdaptiveSizePolicy value of UseAdaptiveSizePolicy option |
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* @param verifyInitialRatio true if we are going to verify initial ratio |
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*/ |
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public static Void verifySurvivorRatio(int survivorRatio, |
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int initRatio, |
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int minRatio, |
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boolean useAdaptiveSizePolicy, |
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boolean verifyInitialRatio) { |
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|
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MemoryUsage edenUsage = HeapRegionUsageTool.getEdenUsage(); |
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MemoryUsage survivorUsage = HeapRegionUsageTool.getSurvivorUsage(); |
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|
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long alignedNewSize = edenUsage.getMax() + 2 * survivorUsage.getMax(); |
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long generationAlignment = wb.psHeapGenerationAlignment(); |
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168 |
|
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if (survivorRatio >= 0) { |
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// -XX:SurvivorRatio was passed to JVM, actual ratio should be SurvivorRatio + 2 |
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long expectedSize = HeapRegionUsageTool.alignDown(alignedNewSize / (survivorRatio + 2), |
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generationAlignment); |
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173 |
|
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if (survivorUsage.getCommitted() != expectedSize) { |
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throw new RuntimeException("Expected survivor size is: " + expectedSize |
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+ ", but observed size is: " + survivorUsage.getCommitted()); |
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} |
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} else if (verifyInitialRatio || !useAdaptiveSizePolicy) { |
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// In case of initial ratio verification or disabled adaptive size policy |
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// ratio should be equal to InitialSurvivorRatio value |
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long expectedSize = HeapRegionUsageTool.alignDown(alignedNewSize / initRatio, |
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generationAlignment); |
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if (survivorUsage.getCommitted() != expectedSize) { |
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throw new RuntimeException("Expected survivor size is: " + expectedSize |
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+ ", but observed size is: " + survivorUsage.getCommitted()); |
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} |
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} else { |
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// In any other case actual survivor ratio should not be lower than MinSurvivorRatio |
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// or is should be equal to InitialSurvivorRatio |
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long expectedMinSize = HeapRegionUsageTool.alignDown(alignedNewSize / minRatio, |
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generationAlignment); |
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long expectedInitSize = HeapRegionUsageTool.alignDown(alignedNewSize / initRatio, |
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generationAlignment); |
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194 |
if (survivorUsage.getCommitted() != expectedInitSize |
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&& survivorUsage.getCommitted() < expectedMinSize) { |
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throw new RuntimeException("Expected survivor size should be " + expectedMinSize |
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+ " or should be greater then " + expectedMinSize |
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+ ", but observer survivor size is " + survivorUsage.getCommitted()); |
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199 |
} |
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200 |
} |
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201 |
return null; |
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202 |
} |
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203 |
} |
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204 |
} |