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-rw-r--r--tests/068-classloader/src/FancyLoader.java228
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diff --git a/tests/068-classloader/src/FancyLoader.java b/tests/068-classloader/src/FancyLoader.java
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index d04083afc..000000000
--- a/tests/068-classloader/src/FancyLoader.java
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-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.RandomAccessFile;
-import java.lang.reflect.Constructor;
-import java.lang.reflect.Method;
-import java.lang.reflect.InvocationTargetException;
-
-/**
- * A class loader with atypical behavior: we try to load a private
- * class implementation before asking the system or boot loader. This
- * is used to create multiple classes with identical names in a single VM.
- *
- * If DexFile is available, we use that; if not, we assume we're not in
- * Dalvik and instantiate the class with defineClass().
- *
- * The location of the DEX files and class data is dependent upon the
- * test framework.
- */
-public class FancyLoader extends ClassLoader {
- /* this is where the "alternate" .class files live */
- static final String CLASS_PATH = "classes-ex/";
-
- /* this is the "alternate" DEX/Jar file */
- static final String DEX_FILE = "test-ex.jar";
-
- /* on Dalvik, this is a DexFile; otherwise, it's null */
- private Class mDexClass;
-
- private Object mDexFile;
-
- /**
- * Construct FancyLoader, grabbing a reference to the DexFile class
- * if we're running under Dalvik.
- */
- public FancyLoader(ClassLoader parent) {
- super(parent);
-
- try {
- mDexClass = parent.loadClass("dalvik.system.DexFile");
- } catch (ClassNotFoundException cnfe) {
- // ignore -- not running Dalvik
- }
- }
-
- /**
- * Finds the class with the specified binary name.
- *
- * We search for a file in CLASS_PATH or pull an entry from DEX_FILE.
- * If we don't find a match, we throw an exception.
- */
- protected Class<?> findClass(String name) throws ClassNotFoundException
- {
- if (mDexClass != null) {
- return findClassDalvik(name);
- } else {
- return findClassNonDalvik(name);
- }
- }
-
- /**
- * Finds the class with the specified binary name, from a DEX file.
- */
- private Class<?> findClassDalvik(String name)
- throws ClassNotFoundException {
-
- if (mDexFile == null) {
- synchronized (FancyLoader.class) {
- Constructor ctor;
- /*
- * Construct a DexFile object through reflection.
- */
- try {
- ctor = mDexClass.getConstructor(new Class[] {String.class});
- } catch (NoSuchMethodException nsme) {
- throw new ClassNotFoundException("getConstructor failed",
- nsme);
- }
-
- try {
- mDexFile = ctor.newInstance(DEX_FILE);
- } catch (InstantiationException ie) {
- throw new ClassNotFoundException("newInstance failed", ie);
- } catch (IllegalAccessException iae) {
- throw new ClassNotFoundException("newInstance failed", iae);
- } catch (InvocationTargetException ite) {
- throw new ClassNotFoundException("newInstance failed", ite);
- }
- }
- }
-
- /*
- * Call DexFile.loadClass(String, ClassLoader).
- */
- Method meth;
-
- try {
- meth = mDexClass.getMethod("loadClass",
- new Class[] { String.class, ClassLoader.class });
- } catch (NoSuchMethodException nsme) {
- throw new ClassNotFoundException("getMethod failed", nsme);
- }
-
- try {
- meth.invoke(mDexFile, name, this);
- } catch (IllegalAccessException iae) {
- throw new ClassNotFoundException("loadClass failed", iae);
- } catch (InvocationTargetException ite) {
- throw new ClassNotFoundException("loadClass failed",
- ite.getCause());
- }
-
- return null;
- }
-
- /**
- * Finds the class with the specified binary name, from .class files.
- */
- private Class<?> findClassNonDalvik(String name)
- throws ClassNotFoundException {
-
- String pathName = CLASS_PATH + name + ".class";
- //System.out.println("--- Fancy: looking for " + pathName);
-
- File path = new File(pathName);
- RandomAccessFile raf;
-
- try {
- raf = new RandomAccessFile(path, "r");
- } catch (FileNotFoundException fnfe) {
- throw new ClassNotFoundException("Not found: " + pathName);
- }
-
- /* read the entire file in */
- byte[] fileData;
- try {
- fileData = new byte[(int) raf.length()];
- raf.readFully(fileData);
- } catch (IOException ioe) {
- throw new ClassNotFoundException("Read error: " + pathName);
- } finally {
- try {
- raf.close();
- } catch (IOException ioe) {
- // drop
- }
- }
-
- /* create the class */
- //System.out.println("--- Fancy: defining " + name);
- try {
- return defineClass(name, fileData, 0, fileData.length);
- } catch (Throwable th) {
- throw new ClassNotFoundException("defineClass failed", th);
- }
- }
-
- /**
- * Load a class.
- *
- * Normally a class loader wouldn't override this, but we want our
- * version of the class to take precedence over an already-loaded
- * version.
- *
- * We still want the system classes (e.g. java.lang.Object) from the
- * bootstrap class loader.
- */
- protected Class<?> loadClass(String name, boolean resolve)
- throws ClassNotFoundException
- {
- Class res;
-
- /*
- * 1. Invoke findLoadedClass(String) to check if the class has
- * already been loaded.
- *
- * This doesn't change.
- */
- res = findLoadedClass(name);
- if (res != null) {
- System.out.println("FancyLoader.loadClass: "
- + name + " already loaded");
- if (resolve)
- resolveClass(res);
- return res;
- }
-
- /*
- * 3. Invoke the findClass(String) method to find the class.
- */
- try {
- res = findClass(name);
- if (resolve)
- resolveClass(res);
- }
- catch (ClassNotFoundException e) {
- // we couldn't find it, so eat the exception and keep going
- }
-
- /*
- * 2. Invoke the loadClass method on the parent class loader. If
- * the parent loader is null the class loader built-in to the
- * virtual machine is used, instead.
- *
- * (Since we're not in java.lang, we can't actually invoke the
- * parent's loadClass() method, but we passed our parent to the
- * super-class which can take care of it for us.)
- */
- res = super.loadClass(name, resolve); // returns class or throws
- return res;
- }
-}