| /* |
| * Copyright (c) 2002, 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. |
| */ |
| |
| |
| /* |
| * @test |
| * @key stress gc |
| * |
| * @summary converted from VM Testbase gc/gctests/InterruptGC. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent] |
| * VM Testbase readme: |
| * In this test, threads perform garbage collection while constantly |
| * interrupting each other. Another thread generates the garbage. |
| * The test runs for approximately one minute (see nsk.share.runner.ThreadsRunner |
| * and nsk.share.runner.RunParams). The test passes if no exceptions are generated. |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm gc.gctests.InterruptGC.InterruptGC -gp random(arrays) -ms low |
| */ |
| |
| package gc.gctests.InterruptGC; |
| |
| import nsk.share.gc.*; |
| import nsk.share.test.*; |
| import nsk.share.gc.gp.*; |
| |
| import java.util.*; |
| |
| /** |
| * The test starts one thread which generates garbage and several other |
| * thread which continuously do System.gc() and interrupt each other. |
| */ |
| public class InterruptGC extends ThreadedGCTest implements GarbageProducerAware, MemoryStrategyAware { |
| private GarbageProducer garbageProducer; |
| private MemoryStrategy memoryStrategy; |
| private List<Interrupter> interrupters = new ArrayList<Interrupter>(); |
| private int count; |
| private long size; |
| |
| private class GarbageCreator implements Runnable { |
| public void run() { |
| Object[] arr = new Object[count]; |
| for (int i = 0; i < count && getExecutionController().continueExecution(); ++i) |
| arr[i] = garbageProducer.create(size); |
| } |
| } |
| |
| private class Interrupter implements Runnable { |
| private Thread thread; |
| |
| public void run() { |
| if (thread == null) |
| thread = Thread.currentThread(); |
| Interrupter interrupter = interrupters.get(LocalRandom.nextInt(interrupters.size())); |
| Thread thread = interrupter.getThread(); |
| if (thread != null) |
| thread.interrupt(); |
| System.gc(); |
| } |
| |
| public Thread getThread() { |
| return thread; |
| } |
| } |
| |
| protected Runnable createRunnable(int i) { |
| switch (i) { |
| case 0: |
| return new GarbageCreator(); |
| default: |
| Interrupter interrupter = new Interrupter(); |
| interrupters.add(interrupter); |
| return interrupter; |
| } |
| } |
| |
| public void run() { |
| size = GarbageUtils.getArraySize(runParams.getTestMemory(), memoryStrategy); |
| count = GarbageUtils.getArrayCount(runParams.getTestMemory(), memoryStrategy); |
| super.run(); |
| } |
| |
| public void setGarbageProducer(GarbageProducer garbageProducer) { |
| this.garbageProducer = garbageProducer; |
| } |
| |
| public void setMemoryStrategy(MemoryStrategy memoryStrategy) { |
| this.memoryStrategy = memoryStrategy; |
| } |
| |
| public static void main(String[] args) { |
| GC.runTest(new InterruptGC(), args); |
| } |
| } |