0N/A/*
2362N/A * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation.
0N/A *
2362N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
0N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
0N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
2362N/A */
2362N/A
0N/A/*
0N/A * @test
0N/A * @bug 5040740
0N/A * @summary annotations cause memory leak
0N/A * @author gafter
0N/A *
0N/A * @run shell LoaderLeak.sh
0N/A */
0N/A
0N/Aimport java.net.*;
0N/Aimport java.lang.ref.*;
0N/Aimport java.util.*;
0N/Aimport java.io.*;
0N/A
0N/Apublic class Main {
0N/A public static void main(String[] args) throws Exception {
0N/A for (int i=0; i<100; i++)
0N/A doTest(args.length != 0);
0N/A }
0N/A
0N/A static void doTest(boolean readAnn) throws Exception {
0N/A // URL classes = new URL("file://" + System.getProperty("user.dir") + "/classes");
0N/A // URL[] path = { classes };
0N/A // URLClassLoader loader = new URLClassLoader(path);
0N/A ClassLoader loader = new SimpleClassLoader();
0N/A WeakReference<Class<?>> c = new WeakReference(loader.loadClass("C"));
0N/A if (c.get() == null) throw new AssertionError();
0N/A if (c.get().getClassLoader() != loader) throw new AssertionError();
0N/A if (readAnn) System.out.println(c.get().getAnnotations()[0]);
0N/A if (c.get() == null) throw new AssertionError();
0N/A System.gc();
0N/A System.gc();
0N/A if (c.get() == null) throw new AssertionError();
0N/A System.gc();
0N/A System.gc();
0N/A loader = null;
0N/A System.gc();
0N/A System.gc();
0N/A if (c.get() != null) throw new AssertionError();
0N/A }
0N/A}
0N/A
0N/Aclass SimpleClassLoader extends ClassLoader {
0N/A private Hashtable classes = new Hashtable();
0N/A
0N/A public SimpleClassLoader() {
0N/A }
0N/A private byte getClassImplFromDataBase(String className)[] {
0N/A byte result[];
0N/A try {
0N/A FileInputStream fi = new FileInputStream("classes/"+className+".class");
0N/A result = new byte[fi.available()];
0N/A fi.read(result);
0N/A return result;
0N/A } catch (Exception e) {
0N/A
0N/A /*
0N/A * If we caught an exception, either the class wasnt found or it
0N/A * was unreadable by our process.
0N/A */
0N/A return null;
0N/A }
0N/A }
0N/A public Class loadClass(String className) throws ClassNotFoundException {
0N/A return (loadClass(className, true));
0N/A }
0N/A public synchronized Class loadClass(String className, boolean resolveIt)
0N/A throws ClassNotFoundException {
0N/A Class result;
0N/A byte classData[];
0N/A
0N/A /* Check our local cache of classes */
0N/A result = (Class)classes.get(className);
0N/A if (result != null) {
0N/A return result;
0N/A }
0N/A
0N/A /* Check with the primordial class loader */
0N/A try {
0N/A result = super.findSystemClass(className);
0N/A return result;
0N/A } catch (ClassNotFoundException e) {
0N/A }
0N/A
0N/A /* Try to load it from our repository */
0N/A classData = getClassImplFromDataBase(className);
0N/A if (classData == null) {
0N/A throw new ClassNotFoundException();
0N/A }
0N/A
0N/A /* Define it (parse the class file) */
0N/A result = defineClass(classData, 0, classData.length);
0N/A if (result == null) {
0N/A throw new ClassFormatError();
0N/A }
0N/A
0N/A if (resolveIt) {
0N/A resolveClass(result);
0N/A }
0N/A
0N/A classes.put(className, result);
0N/A return result;
0N/A }
0N/A}
0N/A