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/*
* Copyright 2008-2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/*
@test
@bug 6758673
@summary Tests that windows are removed from owner's child windows list
@author art: area=awt.toplevel
@run main OwnedWindowsLeak
*/
import java.awt.*;
import java.awt.event.*;
import java.lang.ref.*;
import java.lang.reflect.*;
import java.util.*;
public class OwnedWindowsLeak
{
public static void main(String[] args)
{
Frame owner = new Frame("F");
// First, create many windows
Vector<WeakReference<Window>> children =
new Vector<WeakReference<Window>>();
for (int i = 0; i < 1000; i++)
{
Window child = new Window(owner);
children.add(new WeakReference<Window>(child));
}
// Second, make sure all the memory is allocated
Vector garbage = new Vector();
while (true)
{
try
{
garbage.add(new byte[1000]);
}
catch (OutOfMemoryError e)
{
break;
}
}
garbage = null;
// Third, make sure all the weak references are null
for (WeakReference<Window> ref : children)
{
if (ref.get() != null)
{
throw new RuntimeException("Test FAILED: some of child windows are not GCed");
}
}
// Fourth, make sure owner's children list contains no elements
try
{
Field f = Window.class.getDeclaredField("ownedWindowList");
f.setAccessible(true);
Vector ownersChildren = (Vector)f.get(owner);
if (ownersChildren.size() > 0)
{
throw new RuntimeException("Test FAILED: some of the child windows are not removed from owner's children list");
}
}
catch (NoSuchFieldException z)
{
System.out.println("Test PASSED: no 'ownedWindowList' field in Window class");
return;
}
catch (Exception z)
{
throw new RuntimeException("Test FAILED: unexpected exception", z);
}
// Test passed
System.out.println("Test PASSED");
owner.dispose();
}
}
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