| /* |
| * Copyright (c) 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 5102804 |
| * @summary Tests memory leak |
| * @author Sergey Malenkov |
| * @run main/othervm -ms16m -mx16m Test5102804 |
| */ |
| |
| import java.beans.BeanInfo; |
| import java.beans.IntrospectionException; |
| import java.beans.Introspector; |
| import java.beans.PropertyDescriptor; |
| import java.beans.SimpleBeanInfo; |
| import java.lang.ref.Reference; |
| import java.lang.ref.WeakReference; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| |
| public class Test5102804 { |
| private static final String BEAN_NAME = "Test5102804$Example"; |
| private static final String BEAN_INFO_NAME = BEAN_NAME + "BeanInfo"; |
| |
| public static void main(String[] args) { |
| if (!isCollectible(getReference())) |
| throw new Error("Reference is not collected"); |
| } |
| |
| private static Reference getReference() { |
| try { |
| ClassLoader loader = new Loader(); |
| Class type = Class.forName(BEAN_NAME, true, loader); |
| if (!type.getClassLoader().equals(loader)) { |
| throw new Error("Wrong class loader"); |
| } |
| BeanInfo info = Introspector.getBeanInfo(type); |
| if (0 != info.getDefaultPropertyIndex()) { |
| throw new Error("Wrong bean info found"); |
| } |
| return new WeakReference<Class>(type); |
| } |
| catch (IntrospectionException exception) { |
| throw new Error("Introspection Error", exception); |
| } |
| catch (ClassNotFoundException exception) { |
| throw new Error("Class Not Found", exception); |
| } |
| } |
| |
| private static boolean isCollectible(Reference reference) { |
| int[] array = new int[10]; |
| while (true) { |
| try { |
| array = new int[array.length + array.length / 3]; |
| } |
| catch (OutOfMemoryError error) { |
| return null == reference.get(); |
| } |
| } |
| } |
| |
| /** |
| * Custom class loader to load the Example class by itself. |
| * Could also load it from a different code source, but this is easier to set up. |
| */ |
| private static final class Loader extends URLClassLoader { |
| Loader() { |
| super(new URL[] { |
| Test5102804.class.getProtectionDomain().getCodeSource().getLocation() |
| }); |
| } |
| |
| @Override |
| protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException { |
| Class c = findLoadedClass(name); |
| if (c == null) { |
| if (BEAN_NAME.equals(name) || BEAN_INFO_NAME.equals(name)) { |
| c = findClass(name); |
| } |
| else try { |
| c = getParent().loadClass(name); |
| } |
| catch (ClassNotFoundException exception) { |
| c = findClass(name); |
| } |
| } |
| if (resolve) { |
| resolveClass(c); |
| } |
| return c; |
| } |
| } |
| |
| /** |
| * A simple bean to load from the Loader class, not main class loader. |
| */ |
| public static final class Example { |
| private int value; |
| |
| public int getValue() { |
| return value; |
| } |
| |
| public void setValue(int value) { |
| this.value = value; |
| } |
| } |
| |
| /** |
| * The BeanInfo for the Example class. |
| * It is also loaded from the Loader class. |
| */ |
| public static final class ExampleBeanInfo extends SimpleBeanInfo { |
| @Override |
| public int getDefaultPropertyIndex() { |
| return 0; |
| } |
| |
| @Override |
| public PropertyDescriptor[] getPropertyDescriptors() { |
| try { |
| return new PropertyDescriptor[] { |
| new PropertyDescriptor("value", Class.forName(BEAN_NAME)) |
| }; |
| } |
| catch (ClassNotFoundException exception) { |
| return null; |
| } |
| catch (IntrospectionException exception) { |
| return null; |
| } |
| } |
| } |
| } |