| /* |
| * Copyright (c) 2001, 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. |
| */ |
| |
| /** |
| * |
| */ |
| import java.util.*; |
| |
| class UnloadEventTarg { |
| static int loadersFinalized = 0; |
| |
| public static void main(String[] args) throws ClassNotFoundException { |
| loadup("first"); |
| loadup("second"); |
| if (!forceUnload()) { |
| System.err.println("Unable to force unload"); |
| } |
| lastStop(); |
| } |
| |
| static void loadup(String id) throws ClassNotFoundException { |
| ClassLoaderTarg cl = new ClassLoaderTarg(id); |
| cl.findClass("Unload1Targ").getFields(); |
| cl.findClass("Unload2Targ").getFields(); |
| } |
| |
| static boolean forceUnload() { |
| List holdAlot = new ArrayList(); |
| for (int chunk=10000000; chunk > 10000; chunk = chunk / 2) { |
| if (loadersFinalized > 1) { |
| return true; |
| } |
| try { |
| while(true) { |
| holdAlot.add(new byte[chunk]); |
| System.err.println("Allocated " + chunk); |
| } |
| } |
| catch ( Throwable thrown ) { // OutOfMemoryError |
| System.gc(); |
| } |
| System.runFinalization(); |
| } |
| return false; |
| } |
| |
| static void classLoaderFinalized(String id) { |
| System.err.println("finalizing ClassLoaderTarg - " + id); |
| loadersFinalized++; |
| } |
| |
| static void unloading1() { |
| System.err.println("unloading Unload1Targ"); |
| } |
| |
| static void unloading2() { |
| System.err.println("unloading Unload2Targ"); |
| } |
| |
| static void lastStop() { |
| System.err.println("UnloadEventTarg exiting"); |
| } |
| |
| } |