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