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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 * 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.

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import java.awt.Graphics;

import java.awt.image.BufferedImage;

import java.util.concurrent.CyclicBarrier;

import javax.swing.JButton;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

import javax.swing.UnsupportedLookAndFeelException;

import sun.awt.AppContext;

import sun.awt.SunToolkit;

import static javax.swing.UIManager.getInstalledLookAndFeels;

/**

 * @test

 * @bug 6190373

 * @summary Tests 6190373

 * @author Scott Violet

 * @modules java.desktop/sun.awt

 */

public final class bug6190373 {

    private static AppContext app1;

    private static AppContext app2;

    private static final int LOOP_COUNT = 10000;

    private static final CyclicBarrier barrier = new CyclicBarrier(2);

    public static void main(final String[] args) throws Exception {

        final Thread t1 = new Thread(new ThreadGroup("firstGroup"), () -> {

            app1 = SunToolkit.createNewAppContext();

            test(true);

        });

        final Thread t2 = new Thread(new ThreadGroup("secondGroup"), () -> {

            app2 = SunToolkit.createNewAppContext();

            test(false);

        });

        t1.start();

        t2.start();

        t1.join();

        t2.join();

        app1.dispose();

        app2.dispose();

    }

    private static void test(final boolean lock) {

        for (final UIManager.LookAndFeelInfo laf : getInstalledLookAndFeels()) {

            try {

                SwingUtilities.invokeAndWait(() -> setLookAndFeel(laf));

                barrier.await();

                SwingUtilities.invokeAndWait(() -> slam(lock));

                barrier.await();

            } catch (final Exception e) {

                throw new RuntimeException(e);

            }

        }

    }

    private static void slam(final boolean lock) {

        JButton button = new JButton("HI");

        button.setSize(100, 100);

        BufferedImage image = new BufferedImage(100, 100,

                                                BufferedImage.TYPE_INT_RGB);

        for (int i = 0; i < LOOP_COUNT; i++) {

            Graphics g = image.getGraphics();

            if (lock) {

                synchronized (button.getTreeLock()) {

                    button.paint(g);

                }

            } else {

                button.paint(g);

            }

            g.dispose();

        }

    }

    private static void setLookAndFeel(final UIManager.LookAndFeelInfo laf) {

        try {

            UIManager.setLookAndFeel(laf.getClassName());

            System.out.println("LookAndFeel: " + laf.getClassName());

        } catch (ClassNotFoundException | InstantiationException |

                UnsupportedLookAndFeelException | IllegalAccessException e) {

            throw new RuntimeException(e);

        }

    }

}