/*

 * Copyright 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 6795356

 * @summary Leak caused by javax.swing.UIDefaults.ProxyLazyValue.acc

 * @author Alexander Potochkin

 * @run main bug6795356

 */

import java.lang.ref.WeakReference;

import java.security.ProtectionDomain;

import java.security.AccessController;

import java.security.PrivilegedAction;

import java.security.AccessControlContext;

import java.util.LinkedList;

import java.util.List;

import javax.swing.*;

public class bug6795356 {

    volatile static WeakReference<ProtectionDomain> weakRef;

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

        ProtectionDomain domain = new ProtectionDomain(null, null);

        AccessController.doPrivileged(new PrivilegedAction<Object>() {

            public Object run() {

                // this initialize ProxyLazyValues

                UIManager.getLookAndFeel();

                return null;

            }

        }, new AccessControlContext(new ProtectionDomain[]{domain}));

        weakRef = new WeakReference<ProtectionDomain>(domain);

        domain = null;

        // Generate OutOfMemory and check the weak ref

        generateOOME();

        if (weakRef.get() != null) {

            throw new RuntimeException("Memory leak found!");

        }

        System.out.println("Test passed");

    }

    static void generateOOME() {

        List<Object> bigLeak = new LinkedList<Object>();

        boolean oome = false;

        System.out.print("Filling the heap");

        try {

            for(int i = 0; true ; i++) {

                // Now, use up all RAM

                bigLeak.add(new byte[1024 * 1024]);

                System.out.print(".");

                // Give the GC a change at that weakref

                if (i % 10 == 0) {

                    System.gc();

                    try {

                        Thread.sleep(100);

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                }

            }

        } catch (OutOfMemoryError e) {

            bigLeak = null;

            oome = true;

        }

        System.out.println("");

        if (!oome) {

            throw new RuntimeException("Problem with test case - never got OOME");

        }

        System.out.println("Got OOME");

    }

}