128 lines
4.2 KiB
Java
128 lines
4.2 KiB
Java
/*
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* Copyright (c) 2007, 2018, 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 vm.gc.compact;
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import java.util.*;
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import java.util.concurrent.atomic.AtomicInteger;
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import nsk.share.test.*;
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import nsk.share.gc.*;
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import nsk.share.gc.gp.*;
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/**
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* Test garbage collector compaction.
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*
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* The test starts several threads which create objects using
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* given garbage producer until OOM. The references are kept
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* in an array. The references to even elements are cleared
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* and objects of larger size are created until OOM. The garbage
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* collector will have to compact free space to free memory for
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* new objects.
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*
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* The size of the second half of created objects could be set explictly.
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*
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* This process is repeated.
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*/
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public class Compact extends ThreadedGCTest implements GarbageProducerAware, GarbageProducer1Aware, MemoryStrategyAware {
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private GarbageProducer garbageProducer;
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private GarbageProducer garbageProducer1;
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private MemoryStrategy memoryStrategy;
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private long size;
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private long size2;
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private static long customSize = 0;
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static AtomicInteger allocations = new AtomicInteger();
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private class Worker implements Runnable {
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private List<Object> bricks;
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private ExecutionController stresser;
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public void run() {
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if (stresser == null) {
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stresser = getExecutionController();
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}
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try {
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bricks = new ArrayList<Object>();
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while (stresser.continueExecution()) {
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bricks.add(garbageProducer.create(size));
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}
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} catch (OutOfMemoryError e) {
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}
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if (bricks == null) {
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return;
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}
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int count = bricks.size();
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for (int i = 0; stresser.continueExecution() && i < count; i += 2) {
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bricks.set(i, null);
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}
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try {
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for (int i = 0; stresser.continueExecution() && i < count; i += 2) {
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bricks.set(i, garbageProducer1.create(size2));
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allocations.incrementAndGet();
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}
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} catch (OutOfMemoryError e) {
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}
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bricks = null;
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}
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}
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public Runnable createRunnable(int i) {
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return new Worker();
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}
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public void run() {
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size = memoryStrategy.getSize(runParams.getTestMemory());
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size2 = customSize == 0
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? size2 = size * 2
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: customSize;
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super.run();
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}
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public final void setGarbageProducer(GarbageProducer garbageProducer) {
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this.garbageProducer = garbageProducer;
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}
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public final void setGarbageProducer1(GarbageProducer garbageProducer1) {
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this.garbageProducer1 = garbageProducer1;
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}
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public final void setMemoryStrategy(MemoryStrategy memoryStrategy) {
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this.memoryStrategy = memoryStrategy;
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}
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static void setHumongousSizeFromParams(String[] args) {
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for (int i = 0; i < args.length; ++i) {
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if (args[i].equals("-size2")) {
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customSize = Long.parseLong(args[i + 1]);
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return;
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}
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}
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}
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public static void main(String[] args) {
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setHumongousSizeFromParams(args);
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GC.runTest(new Compact(), args);
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}
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}
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