118 lines
4.1 KiB
Java
118 lines
4.1 KiB
Java
/*
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* Copyright (c) 2007, 2016, 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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/*
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* @test
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* @key headful
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* @bug 6648018
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* @summary Tests that we don't run into infinite validation loop when copying
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a VolatileImage to the screen
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* @author Dmitri.Trembovetski@sun.com: area=Graphics
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* @run main/othervm InfiniteValidationLoopTest
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* @run main/othervm -Dsun.java2d.d3d=false InfiniteValidationLoopTest
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*/
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import java.awt.Color;
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import java.awt.Frame;
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import java.awt.Graphics;
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import java.awt.GraphicsConfiguration;
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import static java.awt.image.VolatileImage.*;
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import java.awt.image.VolatileImage;
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import java.util.concurrent.CountDownLatch;
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public class InfiniteValidationLoopTest extends Frame {
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private static volatile boolean failed = false;
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private static final int LOOP_THRESHOLD = 50;
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private static volatile CountDownLatch latch;
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private VolatileImage vi;
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public InfiniteValidationLoopTest() {
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super("InfiniteValidationLoopTest");
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}
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@Override
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public void paint(Graphics g) {
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try {
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runTest(g);
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} finally {
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latch.countDown();
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}
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}
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private void runTest(Graphics g) {
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int status = IMAGE_OK;
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int count1 = 0;
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do {
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GraphicsConfiguration gc = getGraphicsConfiguration();
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int count2 = 0;
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while (vi == null || (status = vi.validate(gc)) != IMAGE_OK) {
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if (++count2 > LOOP_THRESHOLD) {
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System.err.println("Infinite loop detected: count2="+count2);
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failed = true;
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return;
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}
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if (vi == null || status == IMAGE_INCOMPATIBLE) {
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if (vi != null) { vi.flush(); vi = null; }
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vi = gc.createCompatibleVolatileImage(100, 100);
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continue;
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}
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if (status == IMAGE_RESTORED) {
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Graphics gg = vi.getGraphics();
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gg.setColor(Color.green);
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gg.fillRect(0, 0, vi.getWidth(), vi.getHeight());
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break;
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}
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}
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g.drawImage(vi, getInsets().left, getInsets().top, null);
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if (++count1 > LOOP_THRESHOLD) {
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System.err.println("Infinite loop detected: count1="+count1);
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failed = true;
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return;
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}
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} while (vi.contentsLost());
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}
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public static void main(String[] args) {
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latch = new CountDownLatch(1);
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InfiniteValidationLoopTest t1 = new InfiniteValidationLoopTest();
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t1.pack();
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t1.setSize(200, 200);
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t1.setVisible(true);
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try { latch.await(); } catch (InterruptedException ex) {}
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t1.dispose();
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latch = new CountDownLatch(1);
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t1 = new InfiniteValidationLoopTest();
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t1.pack();
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t1.setSize(50, 50);
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t1.setVisible(true);
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try { latch.await(); } catch (InterruptedException ex) {}
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t1.dispose();
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if (failed) {
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throw new
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RuntimeException("Failed: infinite validattion loop detected");
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}
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System.out.println("Test PASSED");
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}
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}
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