| /* |
| * Copyright (c) 2009, 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.net.MalformedURLException; |
| import java.net.URL; |
| import java.net.URLClassLoader; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.locks.*; |
| import java.lang.reflect.*; |
| |
| public class DelegatingLoader extends URLClassLoader { |
| |
| private DelegatingLoader delLoader; |
| private String[] delClasses; |
| |
| static { |
| boolean supportParallel = false; |
| try { |
| Class c = Class.forName("java.lang.ClassLoader"); |
| Method m = c.getDeclaredMethod("registerAsParallelCapable", |
| new Class[0]); |
| m.setAccessible(true); |
| Object result = (Boolean) m.invoke(null); |
| if (result instanceof Boolean) { |
| supportParallel = ((Boolean) result).booleanValue(); |
| } else { |
| // Should never happen |
| System.out.println("Error: ClassLoader.registerAsParallelCapable() did not return a boolean!"); |
| System.exit(1); |
| } |
| } catch (NoSuchMethodException nsme) { |
| System.out.println("No ClassLoader.registerAsParallelCapable() API"); |
| } catch (NoSuchMethodError nsme2) { |
| System.out.println("No ClassLoader.registerAsParallelCapable() API"); |
| } catch (Exception ex) { |
| ex.printStackTrace(); |
| // Exit immediately to indicate an error |
| System.exit(1); |
| } |
| System.out.println("Parallel ClassLoader registration: " + |
| supportParallel); |
| } |
| |
| public DelegatingLoader(URL urls[]) { |
| super(urls); |
| System.out.println("DelegatingLoader using URL " + urls[0]); |
| } |
| |
| public void setDelegate(String[] delClasses, DelegatingLoader delLoader) { |
| this.delClasses = delClasses; |
| this.delLoader = delLoader; |
| } |
| |
| public Class loadClass(String className, boolean resolve) |
| throws ClassNotFoundException { |
| for (int i = 0; i < delClasses.length; i++) { |
| if (delClasses[i].equals(className)) { |
| Starter.log("Delegating class loading for " + className); |
| try { |
| Thread.sleep(500); |
| } catch (InterruptedException ie) { |
| return null; |
| } |
| return delLoader.loadClass(className, resolve); |
| } |
| } |
| |
| Starter.log("Loading local class " + className); |
| // synchronized (getClassLoadingLock(className)) { |
| return super.loadClass(className, resolve); |
| // } |
| } |
| } |