80 lines
2.6 KiB
Java
80 lines
2.6 KiB
Java
/*
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* Copyright (c) 2010, 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.containers;
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import java.util.Deque;
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import nsk.share.gc.gp.GarbageProducer;
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import nsk.share.gc.gp.MemoryStrategy;
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/*
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* The dequeue container update remove a first or last
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* elements from queue and add the same number of elements.
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*
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*/
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class DequeueContainer extends TypicalContainer {
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Deque queue;
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boolean isLIFO;
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int threadsCount;
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public DequeueContainer(Deque queue, long maximumSize,
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GarbageProducer garbageProducer, MemoryStrategy memoryStrategy, Speed speed,
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int threadsCount) {
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super(maximumSize, garbageProducer, memoryStrategy, speed);
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this.threadsCount = threadsCount;
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this.queue = queue;
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}
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public void initialize() {
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for (int i = 0; i < count; i++) {
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if (!stresser.continueExecution()) {
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return;
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}
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queue.add(garbageProducer.create(size));
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}
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}
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@Override
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public void update() {
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for (int i = 0; i < count * speed.getValue() / (threadsCount * 100); i++) {
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if (!stresser.continueExecution()) {
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return;
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}
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Object obj = null;
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if (isLIFO) {
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obj = queue.removeFirst();
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} else {
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obj = queue.removeLast();
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}
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garbageProducer.validate(obj);
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}
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for (int i = 0; i < count * speed.getValue() / (threadsCount * 100); i++) {
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if (!stresser.continueExecution()) {
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return;
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}
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queue.addFirst(garbageProducer.create(size));
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}
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isLIFO = !isLIFO;
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}
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}
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