124 lines
3.2 KiB
Java
124 lines
3.2 KiB
Java
/*
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* Copyright (c) 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 nsk.stress.jni;
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class GarbageGenerator extends Thread {
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class Garbage {
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Garbage() {
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this(1024);
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}
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Garbage(int m) {
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memory = new byte[m];
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}
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void setNext(Garbage n) {
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next = n;
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}
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Garbage getNext() {
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return next;
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}
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protected void finalize() {
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}
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private Garbage next;
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private byte[] memory;
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}
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class GarbageRing {
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GarbageRing() {
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attachment = new Garbage(0);
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}
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void add(int size) {
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Garbage head = attachment.getNext();
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Garbage g = new Garbage(size);
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if (head != null) {
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Garbage oldNext = head.getNext();
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if (oldNext != null) {
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g.setNext(oldNext);
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head.setNext(g);
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attachment.setNext(g);
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} else {
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g.setNext(head);
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head.setNext(g);
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}
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} else
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attachment.setNext(g);
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}
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void discard() {
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attachment.setNext(null);
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}
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private byte[] memory;
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private Garbage attachment;
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}
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public void run() {
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GarbageRing gr = new GarbageRing();
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int g = 0;
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while (!done) {
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for (g = 0; g < ringSize; g++) {
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gr.add(allocSize);
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Thread.yield();
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}
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gr.discard();
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try {
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sleep(interval);
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} catch (InterruptedException e) {
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}
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}
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if (DEBUG) System.out.println("GarbageRing::run(): done");
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}
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public void setAllocSize(int i) {
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allocSize = i;
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}
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public int getAllocSize() {
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return allocSize;
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}
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public void setInterval(int i) {
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interval = i;
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}
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public int getInterval() {
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return interval;
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}
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public void halt() {
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done = true;
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}
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private int allocSize = 10000;
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private int ringSize = 50;
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private int interval = 1000;
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private boolean done = false;
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final private static boolean DEBUG = false;
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}
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