1 /*
   2  * Copyright (c) 2016, 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 import java.awt.*;
  25 import java.util.concurrent.CountDownLatch;
  26 import java.util.concurrent.TimeUnit;
  27 
  28 /**
  29  * @test
  30  * @bug 8177758
  31  * @summary Regression in java.awt.FileDialog
  32  * @run main FileDialogLeakTest
  33  */
  34 
  35 public class FileDialogLeakTest {
  36     static CountDownLatch latch = new CountDownLatch(3);
  37     static boolean passed;
  38 
  39     public static void main(String[] args) throws Exception {
  40         test();
  41         System.gc();
  42         System.runFinalization();
  43         latch.await(1, TimeUnit.SECONDS);
  44         if (!passed) {
  45             throw new RuntimeException("Test failed.");
  46         }
  47     }
  48 
  49     private static void test() throws Exception {
  50         FileDialog fd = new FileDialog((Frame) null) {
  51             @Override
  52             protected void finalize() throws Throwable {
  53                 System.out.println("Finalize");
  54                 super.finalize();
  55                 passed = true;
  56                 latch.countDown();
  57             }
  58         };
  59 
  60         new Thread(() -> {
  61             latch.countDown();
  62             fd.setVisible(true);
  63             latch.countDown();
  64         }).start();
  65         latch.await(1, TimeUnit.SECONDS);
  66         fd.dispose();
  67         latch.await(1, TimeUnit.SECONDS);
  68     }
  69 
  70 }
  71