--- /dev/null 2013-09-06 19:25:57.000000000 -0400 +++ new/test/java/lang/invoke/8022701/BogoLoader.java 2013-09-06 19:25:57.000000000 -0400 @@ -0,0 +1,135 @@ +/* + * Copyright (c) 2013, 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.io.BufferedInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.util.Map; +import java.util.Set; +import java.util.Vector; + +public class BogoLoader extends ClassLoader { + + /** + * Use this property to verify that the desired classloading is happening. + */ + private final boolean verbose = Boolean.getBoolean("bogoloader.verbose"); + /** + * Use this property to disable replacement for testing purposes. + */ + private final boolean noReplace = Boolean.getBoolean("bogoloader.noreplace"); + + private Set nonSystem; + private Map replaced; + private final Vector history = new Vector(); + + private boolean useSystemLoader(String name) { + return ! nonSystem.contains(name) && ! replaced.containsKey(name); + } + + public BogoLoader(Set non_system, Map replaced) { + super(Thread.currentThread().getContextClassLoader()); + this.nonSystem = non_system; + this.replaced = replaced; + } + + private byte[] readResource(String className) throws IOException { + return readResource(className, "class"); + } + + private byte[] readResource(String className, String suffix) throws IOException { + // Note to the unwary -- "/" works on Windows, leave it alone. + String fileName = className.replace('.', '/') + "." + suffix; + InputStream origStream = getResourceAsStream(fileName); + if (origStream == null) { + throw new IOException("Resource not found : " + fileName); + } + BufferedInputStream stream = new java.io.BufferedInputStream(origStream); + byte[] data = new byte[stream.available()]; + int how_many = stream.read(data); + // Really ought to deal with the corner cases of stream.available() + return data; + } + + protected byte[] getClass(String name) throws ClassNotFoundException, + IOException { + return readResource(name, "class"); + } + + /** + * Loads the named class from the system class loader unless + * the name appears in either replaced or nonSystem. + * nonSystem classes are loaded into this classloader, + * and replaced classes get their content from the specified array + * of bytes (and are also loaded into this classloader). + */ + protected Class loadClass(String name, boolean resolve) + throws ClassNotFoundException { + Class clazz; + + if (history.contains(name)) { + Class c = this.findLoadedClass(name); + return c; + } + if (useSystemLoader(name)) { + clazz = findSystemClass(name); + if (verbose) System.err.println("Loading system class " + name); + } else { + history.add(name); + try { + byte[] classData = null; + boolean expanded = false; + try { + if (!noReplace && replaced.containsKey(name)) { + if (verbose) System.err.println("Loading replaced class " + name); + classData = replaced.get(name); + } else { + if (verbose) System.err.println("Loading classloader class " + name); + classData = getClass(name); + } + } catch (java.io.EOFException ioe) { + throw new ClassNotFoundException( + "IO Exception in reading class : " + name + " ", ioe); + } + clazz = defineClass(name, classData, 0, classData.length); + } catch (java.io.EOFException ioe) { + throw new ClassNotFoundException( + "IO Exception in reading class : " + name + " ", ioe); + } catch (ClassFormatError ioe) { + throw new ClassNotFoundException( + "ClassFormatError in reading class file: ", ioe); + } catch (IOException ioe) { + throw new ClassNotFoundException( + "IO Exception in reading class file: ", ioe); + } + } + if (clazz == null) { + throw new ClassNotFoundException(name); + } + if (resolve) { + resolveClass(clazz); + } + return clazz; + } +}