| // Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved. |
| // @(#)Launcher.java 1.3 10/03/24 SMI |
| |
| import java.lang.reflect.*; |
| |
| public class Launcher { |
| // Byte array for dynamically loaded class: // |
| //public class DynLoadedClass { // |
| // public int DynamicFunction(int x) { // |
| // float f = 0; // |
| // for (int k=0 ; k<20000; k++) { // |
| // f = ((float)k) / x; // |
| // } // |
| // return (int)f; // |
| // } // |
| // // |
| // public static void main(String[] args){ // |
| // DynLoadedClass dcls = new DynLoadedClass(); // |
| // for (int k=0 ; k<10; k++) { // |
| // dcls.DynamicFunction(k); // |
| // } // |
| // } // |
| //} // |
| static final byte [] bClassGenerated = { |
| -54, -2, -70, -66, 0, 0, 0, 46, 0, 20, 10, 0, 5, 0, 16, 7, 0, 17, 10, 0, 2, 0, 16, 10, 0, 2, |
| 0, 18, 7, 0, 19, 1, 0, 6, 60, 105, 110, 105, 116, 62, 1, 0, 3, 40, 41, 86, 1, 0, 4, 67, 111, |
| 100, 101, 1, 0, 15, 76, 105, 110, 101, 78, 117, 109, 98, 101, 114, 84, 97, 98, 108, 101, 1, 0, 15, 68, 121, |
| 110, 97, 109, 105, 99, 70, 117, 110, 99, 116, 105, 111, 110, 1, 0, 4, 40, 73, 41, 73, 1, 0, 4, 109, 97, |
| 105, 110, 1, 0, 22, 40, 91, 76, 106, 97, 118, 97, 47, 108, 97, 110, 103, 47, 83, 116, 114, 105, 110, 103, 59, |
| 41, 86, 1, 0, 10, 83, 111, 117, 114, 99, 101, 70, 105, 108, 101, 1, 0, 19, 68, 121, 110, 76, 111, 97, 100, |
| 101, 100, 67, 108, 97, 115, 115, 46, 106, 97, 118, 97, 12, 0, 6, 0, 7, 1, 0, 14, 68, 121, 110, 76, 111, |
| 97, 100, 101, 100, 67, 108, 97, 115, 115, 12, 0, 10, 0, 11, 1, 0, 16, 106, 97, 118, 97, 47, 108, 97, 110, |
| 103, 47, 79, 98, 106, 101, 99, 116, 0, 33, 0, 2, 0, 5, 0, 0, 0, 0, 0, 3, 0, 1, 0, 6, 0, |
| 7, 0, 1, 0, 8, 0, 0, 0, 29, 0, 1, 0, 1, 0, 0, 0, 5, 42, -73, 0, 1, -79, 0, 0, 0, |
| 1, 0, 9, 0, 0, 0, 6, 0, 1, 0, 0, 0, 1, 0, 1, 0, 10, 0, 11, 0, 1, 0, 8, 0, 0, |
| 0, 66, 0, 2, 0, 4, 0, 0, 0, 26, 11, 69, 3, 62, 29, 17, 78, 32, -94, 0, 15, 29, -122, 27, -122, |
| 110, 69, -124, 3, 1, -89, -1, -16, 36, -117, -84, 0, 0, 0, 1, 0, 9, 0, 0, 0, 22, 0, 5, 0, 0, |
| 0, 3, 0, 2, 0, 4, 0, 11, 0, 5, 0, 17, 0, 4, 0, 23, 0, 7, 0, 9, 0, 12, 0, 13, 0, |
| 1, 0, 8, 0, 0, 0, 69, 0, 2, 0, 3, 0, 0, 0, 29, -69, 0, 2, 89, -73, 0, 3, 76, 3, 61, |
| 28, 16, 10, -94, 0, 15, 43, 28, -74, 0, 4, 87, -124, 2, 1, -89, -1, -15, -79, 0, 0, 0, 1, 0, 9, |
| 0, 0, 0, 22, 0, 5, 0, 0, 0, 11, 0, 8, 0, 12, 0, 16, 0, 13, 0, 22, 0, 12, 0, 28, 0, |
| 15, 0, 1, 0, 14, 0, 0, 0, 2, 0, 15 |
| }; |
| |
| private static DynClassLoader persistentInstance; |
| |
| public static DynClassLoader getPersistentInstance() |
| { |
| if (persistentInstance == null) |
| persistentInstance = new DynClassLoader(); |
| return persistentInstance; |
| } |
| |
| public static void main(String args []) { |
| if (args.length != 1) { |
| System.err.println("Usage: Launcher DynLoadedClass"); |
| return; |
| } |
| |
| String className = args[0]; // Dynamic class name |
| |
| try { |
| Class genClass = getPersistentInstance().getClassFromByteArray(className, bClassGenerated); |
| Method[] methods_g = genClass.getDeclaredMethods(); |
| |
| for (int i = 0; i < methods_g.length; i++) { |
| Method m = methods_g[i]; |
| String methodName = m.getName(); |
| String progArgs[] = new String[1]; |
| //System.out.println("Invoking method " + className + "." + methodName); |
| if (methodName.equals("main")) |
| m.invoke( null, (Object[]) progArgs ); |
| } |
| } catch (InvocationTargetException iex) { |
| System.err.println("InvocationTargetException"); |
| } catch (IllegalAccessException aex) { |
| System.err.println("IllegalAccessException"); |
| } |
| } |
| |
| // Class loader to generate dynamic class on the fly from the byte array |
| private static class DynClassLoader extends ClassLoader { |
| public DynClassLoader() { } |
| public Class getClassFromByteArray(String name, byte[] b) { |
| return super.defineClass(name, b, 0, b.length); |
| } |
| } |
| |
| |
| } |
