| /* |
| * Copyright (c) 2015, 2016, 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. |
| */ |
| |
| /* |
| * @test TestNewSizeFlags |
| * @key gc |
| * @bug 8025166 |
| * @summary Verify that young gen size conforms values specified by NewSize, MaxNewSize and Xmn options |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @build sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * @run driver/timeout=240 TestNewSizeFlags |
| */ |
| |
| import java.io.IOException; |
| import java.lang.management.MemoryUsage; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.Utils; |
| import sun.hotspot.WhiteBox; |
| |
| public class TestNewSizeFlags { |
| |
| public static final long M = 1024 * 1024; |
| |
| public static void main(String args[]) throws Exception { |
| LinkedList<String> options = new LinkedList<>( |
| Arrays.asList(Utils.getFilteredTestJavaOpts("(-Xm[nsx][^ ]+)|" |
| + "(-XX:(Max)?((New)|" |
| + "(Heap))((Size)|" |
| + "(Ratio))=[^ ]+)")) |
| ); |
| |
| // Test NewSize and MaxNewSize |
| testNewSizeFlags(20 * M, 10 * M, 30 * M, 40 * M, options, false); |
| testNewSizeFlags(10 * M, 20 * M, 30 * M, 80 * M, options, false); |
| testNewSizeFlags(-1, 20 * M, 30 * M, 40 * M, options, false); |
| testNewSizeFlags(10 * M, -1, 30 * M, 40 * M, options, false); |
| testNewSizeFlags(20 * M, 20 * M, 30 * M, 40 * M, options, false); |
| testNewSizeFlags(20 * M, 30 * M, 40 * M, 50 * M, options, false); |
| testNewSizeFlags(30 * M, 100 * M, 150 * M, 200 * M, options, false); |
| testNewSizeFlags(20 * M, 30 * M, 128 * M, 128 * M, options, false); |
| |
| // Test -Xmn |
| testXmnFlags(0, 30 * M, 40 * M, options, true); |
| testXmnFlags(20 * M, 30 * M, 40 * M, options, false); |
| testXmnFlags(50 * M, 70 * M, 100 * M, options, false); |
| } |
| |
| /** |
| * Verify that NewSize and MaxNewSize flags affect young gen size. |
| * |
| * @param newSize value of NewSize option, omitted if negative |
| * @param maxNewSize value of MaxNewSize option, omitted if negative |
| * @param heapSize value of HeapSize option |
| * @param maxHeapSize value of MaxHeapSize option |
| * @param options additional options for JVM |
| * @param failureExpected true if JVM should fail with passed heap size options |
| */ |
| public static void testNewSizeFlags(long newSize, long maxNewSize, |
| long heapSize, long maxHeapSize, |
| LinkedList<String> options, |
| boolean failureExpected) throws Exception { |
| long expectedNewSize = newSize; |
| long expectedMaxNewSize = (maxNewSize >= 0 ? Math.max(maxNewSize, newSize) : maxNewSize); |
| testVMOptions(newSize, maxNewSize, |
| heapSize, maxHeapSize, |
| expectedNewSize, expectedMaxNewSize, |
| options, failureExpected); |
| } |
| |
| /** |
| * Verify that -Xmn flag affect young gen size. |
| * |
| * @param mnValue value of -Xmn option |
| * @param heapSize value of HeapSize option |
| * @param maxHeapSize value of MaxHeapSize option |
| * @param options additional options for JVM |
| * @param failureExpected true if JVM should fail with passed heap size options |
| */ |
| public static void testXmnFlags(long mnValue, |
| long heapSize, long maxHeapSize, |
| LinkedList<String> options, |
| boolean failureExpected) throws Exception { |
| LinkedList<String> newOptions = new LinkedList<>(options); |
| newOptions.add("-Xmn" + mnValue); |
| testVMOptions(-1, -1, |
| heapSize, maxHeapSize, |
| mnValue, mnValue, |
| newOptions, failureExpected); |
| } |
| |
| /** |
| * Verify that NewSize and MaxNewSize flags affect young gen size. |
| * |
| * @param newSize value of NewSize option, omitted if negative |
| * @param maxNewSize value of MaxNewSize option, omitted if negative |
| * @param heapSize value of HeapSize option |
| * @param maxHeapSize value of MaxHeapSize option |
| * @param expectedNewSize expected initial young gen size |
| * @param expectedMaxNewSize expected max young gen size |
| * @param options additional options for JVM |
| * @param failureExpected true if JVM should fail with passed heap size options |
| */ |
| public static void testVMOptions(long newSize, long maxNewSize, |
| long heapSize, long maxHeapSize, |
| long expectedNewSize, long expectedMaxNewSize, |
| LinkedList<String> options, boolean failureExpected) throws Exception { |
| OutputAnalyzer analyzer = startVM(options, newSize, maxNewSize, heapSize, maxHeapSize, expectedNewSize, expectedMaxNewSize); |
| |
| if (failureExpected) { |
| analyzer.shouldHaveExitValue(1); |
| analyzer.shouldMatch("(Error occurred during initialization of VM)|" |
| + "(Error: Could not create the Java Virtual Machine.)"); |
| } else { |
| analyzer.shouldHaveExitValue(0); |
| } |
| } |
| |
| private static OutputAnalyzer startVM(LinkedList<String> options, |
| long newSize, long maxNewSize, |
| long heapSize, long maxHeapSize, |
| long expectedNewSize, long expectedMaxNewSize) throws Exception, IOException { |
| LinkedList<String> vmOptions = new LinkedList<>(options); |
| Collections.addAll(vmOptions, |
| "-Xbootclasspath/a:.", |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:+WhiteBoxAPI", |
| (newSize >= 0 ? "-XX:NewSize=" + newSize : ""), |
| (maxNewSize >= 0 ? "-XX:MaxNewSize=" + maxNewSize : ""), |
| "-Xmx" + maxHeapSize, |
| "-Xms" + heapSize, |
| "-XX:GCLockerEdenExpansionPercent=0", |
| "-XX:-UseLargePages", |
| NewSizeVerifier.class.getName(), |
| Long.toString(expectedNewSize), |
| Long.toString(expectedMaxNewSize), |
| Long.toString(heapSize), |
| Long.toString(maxHeapSize) |
| ); |
| vmOptions.removeIf(String::isEmpty); |
| ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()])); |
| OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start()); |
| return analyzer; |
| } |
| |
| /** |
| * NewSizeVerifier checks that initial young gen size is equal to expected |
| * regardful to alignment and that young gen size will not be greater than |
| * expected max size. |
| * In order to verify that young gen size will not be greater then expected |
| * max size, NewSizeVerifier do some object allocation to force garbage |
| * collection and heap expansion. |
| */ |
| public static class NewSizeVerifier { |
| |
| private static final WhiteBox WB = WhiteBox.getWhiteBox(); |
| private static final GCTypes.YoungGCType YOUNG_GC_TYPE = GCTypes.YoungGCType.getYoungGCType(); |
| private static final long HEAP_SPACE_ALIGNMENT = WB.getHeapSpaceAlignment(); |
| private static final long HEAP_ALIGNMENT = WB.getHeapAlignment(); |
| private static final long PS_VIRTUAL_SPACE_ALIGNMENT = |
| (YOUNG_GC_TYPE == GCTypes.YoungGCType.PSNew) ? WB.psVirtualSpaceAlignment() : 0; |
| |
| public static final int ARRAY_LENGTH = 100; |
| public static final int CHUNK_SIZE = 1024; |
| public static final int MAX_ITERATIONS = 10; |
| public static byte garbage[][] = new byte[ARRAY_LENGTH][]; |
| |
| public static void main(String args[]) throws Exception { |
| if (args.length != 4) { |
| throw new IllegalArgumentException("Expected 4 args: <expectedNewSize> <expectedMaxNewSize> <initialHeapSize> <maxHeapSize>"); |
| } |
| final long newSize = Long.valueOf(args[0]); |
| final long maxNewSize = Long.valueOf(args[1]); |
| final long initialHeapSize = Long.valueOf(args[2]); |
| final long maxHeapSize = Long.valueOf(args[3]); |
| |
| // verify initial size |
| verifyNewSize(newSize, maxNewSize, initialHeapSize, maxHeapSize); |
| |
| // force GC and verify that size is still correct |
| AllocationHelper allocator = new AllocationHelper(MAX_ITERATIONS, ARRAY_LENGTH, CHUNK_SIZE, () -> (verifyNewSize(newSize, maxNewSize, initialHeapSize, maxHeapSize))); |
| allocator.allocateMemoryAndVerifyNoOOME(); |
| } |
| |
| /** |
| * Verify that actual young gen size conforms NewSize and MaxNewSize values. |
| */ |
| public static Void verifyNewSize(long newSize, long maxNewSize, |
| long initialHeapSize, long maxHeapSize) { |
| long alignedNewSize = alignGenSize(newSize); |
| long alignedMaxNewSize = alignGenSize(maxNewSize); |
| long alignedXms = alignHeapSize(initialHeapSize); |
| long alignedXmx = alignHeapSize(maxHeapSize); |
| |
| MemoryUsage youngGenUsage = getYoungGenUsage(); |
| long initSize = youngGenUsage.getInit(); |
| long commitedSize = youngGenUsage.getCommitted(); |
| long maxSize = youngGenUsage.getMax(); |
| |
| if (newSize != -1) { |
| if (initSize < alignedNewSize) { |
| throw new RuntimeException("initial new size < NewSize value: " |
| + initSize + " < " + alignedNewSize); |
| } |
| |
| if (commitedSize < alignedNewSize) { |
| throw new RuntimeException("actual new size < NewSize value: " |
| + commitedSize + " < " + alignedNewSize); |
| } |
| |
| // for G1 max new size == committed new size |
| if (YOUNG_GC_TYPE != GCTypes.YoungGCType.G1 |
| && maxSize < alignedNewSize) { |
| throw new RuntimeException("max new size < NewSize value: " |
| + maxSize + " < " + alignedNewSize); |
| } |
| } |
| |
| if (maxNewSize != -1) { |
| if (initSize > alignedMaxNewSize) { |
| throw new RuntimeException("initial new size > MaxNewSize value: " |
| + initSize + " > " + alignedMaxNewSize); |
| } |
| |
| if (commitedSize > alignedMaxNewSize) { |
| throw new RuntimeException("actual new size > MaxNewSize value: " |
| + commitedSize + " > " + alignedMaxNewSize); |
| } |
| |
| if (alignedXms != alignedXmx) { |
| if (YOUNG_GC_TYPE != GCTypes.YoungGCType.G1 |
| && maxSize != alignedMaxNewSize) { |
| throw new RuntimeException("max new size != MaxNewSize value: " |
| + maxSize + " != " + alignedMaxNewSize); |
| } |
| } else { |
| if (YOUNG_GC_TYPE != GCTypes.YoungGCType.G1 |
| && maxSize != alignedNewSize) { |
| throw new RuntimeException("max new size != NewSize for case InitialHeapSize == MaxHeapSize value: " |
| + maxSize + " != " + alignedNewSize + " HeapSize == " + alignedXms); |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Get young gen memory usage. |
| * |
| * For G1 it is EdenUsage + SurvivorUsage, |
| * for other GCs it is EdenUsage + 2 * SurvivorUsage. |
| * For G1 max value is just LONG_MAX. |
| * For all GCs used value is 0. |
| */ |
| private static MemoryUsage getYoungGenUsage() { |
| MemoryUsage edenUsage = HeapRegionUsageTool.getEdenUsage(); |
| MemoryUsage survivorUsage = HeapRegionUsageTool.getSurvivorUsage(); |
| long edenUsageInit = edenUsage.getInit(); |
| long edenUsageCommited = edenUsage.getCommitted(); |
| long survivorUsageInit = survivorUsage.getInit(); |
| long survivorUsageCommited = survivorUsage.getCommitted(); |
| |
| if (YOUNG_GC_TYPE == GCTypes.YoungGCType.G1) { |
| return new MemoryUsage(edenUsageInit + survivorUsageInit, 0, |
| edenUsageCommited + survivorUsageCommited, Long.MAX_VALUE); |
| } else { |
| return new MemoryUsage(edenUsageInit + survivorUsageInit * 2, 0, |
| edenUsageCommited + survivorUsageCommited * 2, |
| edenUsage.getMax() + survivorUsage.getMax() * 2); |
| } |
| } |
| |
| /** |
| * Align generation size regardful to used young GC. |
| */ |
| public static long alignGenSize(long value) { |
| switch (YOUNG_GC_TYPE) { |
| case DefNew: |
| case ParNew: |
| return HeapRegionUsageTool.alignDown(value, HEAP_SPACE_ALIGNMENT); |
| case PSNew: |
| return HeapRegionUsageTool.alignUp(HeapRegionUsageTool.alignDown(value, |
| HEAP_SPACE_ALIGNMENT), |
| PS_VIRTUAL_SPACE_ALIGNMENT); |
| case G1: |
| return HeapRegionUsageTool.alignUp(value, WB.g1RegionSize()); |
| default: |
| throw new RuntimeException("Unexpected young GC type"); |
| } |
| } |
| |
| /** |
| * Align heap size. |
| */ |
| public static long alignHeapSize(long value){ |
| return HeapRegionUsageTool.alignUp(value,HEAP_ALIGNMENT); |
| } |
| } |
| } |
