1 /* 2 * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 /** 26 * @test 27 * @key headful 28 * @bug 8043610 29 * @summary Tests that JComponent invalidate, revalidate and repaint methods could 30 * be called from any thread 31 * @author Petr Pchelko 32 * @modules java.desktop/sun.awt 33 */ 34 35 import sun.awt.SunToolkit; 36 37 import javax.swing.*; 38 import java.awt.*; 39 import java.util.concurrent.CountDownLatch; 40 import java.util.concurrent.atomic.AtomicReference; 41 42 public class bug8043610 { 43 private static volatile JFrame frame; 44 private static volatile JComponent component; 45 46 public static void main(String[] args) throws Exception { 47 ThreadGroup stubTG = new ThreadGroup(getRootThreadGroup(), "Stub Thread Group"); 48 ThreadGroup swingTG = new ThreadGroup(getRootThreadGroup(), "SwingTG"); 49 try { 50 Thread stubThread = new Thread(stubTG, SunToolkit::createNewAppContext); 51 stubThread.start(); 52 stubThread.join(); 53 54 CountDownLatch startSwingLatch = new CountDownLatch(1); 55 new Thread(swingTG, () -> { 56 SunToolkit.createNewAppContext(); 57 SwingUtilities.invokeLater(() -> { 58 frame = new JFrame(); 59 component = new JLabel("Test Text"); 60 frame.add(component); 61 frame.setBounds(100, 100, 100, 100); 62 frame.setVisible(true); 63 startSwingLatch.countDown(); 64 }); 65 }).start(); 66 startSwingLatch.await(); 67 68 AtomicReference<Exception> caughtException = new AtomicReference<>(); 69 Thread checkThread = new Thread(getRootThreadGroup(), () -> { 70 try { 71 component.invalidate(); 72 component.revalidate(); 73 component.repaint(new Rectangle(0, 0, 0, 0)); 74 } catch (Exception e) { 75 caughtException.set(e); 76 } 77 }); 78 checkThread.start(); 79 checkThread.join(); 80 81 if (caughtException.get() != null) { 82 throw new RuntimeException("Failed. Caught exception!", caughtException.get()); 83 } 84 } finally { 85 new Thread(swingTG, () -> SwingUtilities.invokeLater(() -> { 86 if (frame != null) { 87 frame.dispose(); 88 } 89 })).start(); 90 } 91 } 92 93 private static ThreadGroup getRootThreadGroup() { 94 ThreadGroup currentTG = Thread.currentThread().getThreadGroup(); 95 ThreadGroup parentTG = currentTG.getParent(); 96 while (parentTG != null) { 97 currentTG = parentTG; 98 parentTG = currentTG.getParent(); 99 } 100 return currentTG; 101 } 102 }