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