/* * Copyright (c) 2012, 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. */ import java.awt.image.ImageObserver; import java.awt.image.ImageProducer; import java.awt.image.ImageConsumer; import java.awt.Image; import java.awt.Container; /* @test 1.0 12/01/17 @bug 7104151 @summary Make sure that we don't leak image observers (or related objects) @run main/othervm AddNoLeak @author David Buck */ public class AddNoLeak { public static void main(String[] args) { System.setProperty("java.awt.headless", "true"); Container cont = new Container(); Image img = cont.createImage(new DummyImageSource()); for(int i=0;i < 15000;i++) { img.getWidth(new ImageObserver() { public boolean imageUpdate(Image img, int infoflags, int x, int y, int width, int height) {return false;} }); if (i % 100 == 0) { System.gc(); } } } private static class DummyImageSource implements ImageProducer { public void addConsumer(ImageConsumer ic){} public boolean isConsumer(ImageConsumer ic){return false;} public void removeConsumer(ImageConsumer ic){} public void startProduction(ImageConsumer ic){} public void requestTopDownLeftRightResend(ImageConsumer ic){} } }