101 lines
3.3 KiB
Java
101 lines
3.3 KiB
Java
/*
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* Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 6795356
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* @summary Leak caused by javax.swing.UIDefaults.ProxyLazyValue.acc
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* @author Alexander Potochkin
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* @run main bug6795356
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*/
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import java.lang.ref.WeakReference;
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import java.security.ProtectionDomain;
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import java.security.AccessController;
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import java.security.PrivilegedAction;
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import java.security.AccessControlContext;
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import java.util.LinkedList;
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import java.util.List;
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import javax.swing.*;
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public class bug6795356 {
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volatile static WeakReference<ProtectionDomain> weakRef;
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public static void main(String[] args) throws Exception {
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ProtectionDomain domain = new ProtectionDomain(null, null);
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AccessController.doPrivileged(new PrivilegedAction<Object>() {
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public Object run() {
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// this initialize ProxyLazyValues
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UIManager.getLookAndFeel();
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return null;
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}
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}, new AccessControlContext(new ProtectionDomain[]{domain}));
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weakRef = new WeakReference<ProtectionDomain>(domain);
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domain = null;
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// Generate OutOfMemory and check the weak ref
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generateOOME();
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if (weakRef.get() != null) {
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throw new RuntimeException("Memory leak found!");
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}
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System.out.println("Test passed");
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}
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static void generateOOME() {
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List<Object> bigLeak = new LinkedList<Object>();
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boolean oome = false;
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System.out.print("Filling the heap");
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try {
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for(int i = 0; true ; i++) {
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// Now, use up all RAM
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bigLeak.add(new byte[1024 * 1024]);
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System.out.print(".");
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// Give the GC a change at that weakref
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if (i % 10 == 0) {
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System.gc();
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try {
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Thread.sleep(100);
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} catch (InterruptedException e) {
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e.printStackTrace();
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}
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}
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}
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} catch (OutOfMemoryError e) {
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bigLeak = null;
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oome = true;
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}
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System.out.println("");
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if (!oome) {
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throw new RuntimeException("Problem with test case - never got OOME");
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}
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System.out.println("Got OOME");
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}
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}
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