| /* |
| * 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/ThreadGC. |
| * VM Testbase keywords: [gc, stress, stressopt, nonconcurrent] |
| * VM Testbase readme: |
| * This tests attempts to stress the garbage collector my making |
| * synchronous calls to the garbage collector after producing garbage. |
| * The garbage collector is invoked in a separate thread. |
| * The test runs for one minute (see nsk.share.runner.ThreadsRunner and |
| * nsk.share.runner.RunParams. It passes if no exceptions are generated. |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm gc.gctests.ThreadGC.ThreadGC -gp random(arrays) -ms low |
| */ |
| |
| package gc.gctests.ThreadGC; |
| |
| import nsk.share.gc.*; |
| import nsk.share.gc.gp.*; |
| import java.util.*; |
| |
| public class ThreadGC extends ThreadedGCTest implements GarbageProducerAware, MemoryStrategyAware { |
| private GarbageProducer garbageProducer; |
| private MemoryStrategy memoryStrategy; |
| private Reclaimer reclaimer; |
| private int count; |
| private long size; |
| |
| private class Devourer implements Runnable { |
| private Object[] arr = null; |
| private int index; |
| |
| public void run() { |
| if (arr == null || index >= count) { |
| arr = null; |
| arr = new Object[count]; |
| index = 0; |
| synchronized (reclaimer) { |
| reclaimer.notify(); |
| } |
| } |
| arr[index] = garbageProducer.create(size); |
| ++index; |
| } |
| } |
| |
| private class Reclaimer implements Runnable { |
| private long waitTime = 1000; |
| |
| public void run() { |
| try { |
| synchronized (this) { |
| this.wait(waitTime); |
| } |
| } catch (InterruptedException e) { |
| } |
| System.gc(); |
| } |
| } |
| |
| protected Runnable createRunnable(int i) { |
| if (i == 0) |
| return new Devourer(); |
| else if (i == 1) { |
| reclaimer = new Reclaimer(); |
| return reclaimer; |
| } else |
| return null; |
| } |
| |
| public void run() { |
| size = GarbageUtils.getArraySize(runParams.getTestMemory(), memoryStrategy); |
| count = GarbageUtils.getArrayCount(runParams.getTestMemory(), memoryStrategy); |
| runParams.setIterations(count); |
| super.run(); |
| } |
| |
| public static void main(String[] args) { |
| GC.runTest(new ThreadGC(), args); |
| } |
| |
| public void setGarbageProducer(GarbageProducer garbageProducer) { |
| this.garbageProducer = garbageProducer; |
| } |
| |
| public void setMemoryStrategy(MemoryStrategy memoryStrategy) { |
| this.memoryStrategy = memoryStrategy; |
| } |
| |
| } |