--- a/test/hotspot/jtreg/runtime/appcds/test-classes/Util.java Mon Jul 29 18:31:18 2019 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,156 +0,0 @@
-/*
- * Copyright (c) 2015, 2017, 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.*;
-import java.lang.reflect.*;
-import java.util.jar.*;
-
-public class Util {
- /**
- * Invoke the loader.defineClass() class method to define the class stored in clsFile,
- * with the following modification:
- * <ul>
- * <li> All ASCII strings in the class file bytes that matches fromString will be replaced with toString.
- * NOTE: the two strings must be the exact same length.
- * </ul>
- */
- public static Class defineModifiedClass(ClassLoader loader, File clsFile, String fromString, String toString)
- throws FileNotFoundException, IOException, NoSuchMethodException, IllegalAccessException,
- InvocationTargetException
- {
- try (DataInputStream dis = new DataInputStream(new FileInputStream(clsFile))) {
- byte[] buff = new byte[(int)clsFile.length()];
- dis.readFully(buff);
- replace(buff, fromString, toString);
-
- System.out.println("Loading from: " + clsFile + " (" + buff.length + " bytes)");
-
- Method defineClass = ClassLoader.class.getDeclaredMethod("defineClass",
- buff.getClass(), int.class, int.class);
- defineClass.setAccessible(true);
-
- // We directly call into ClassLoader.defineClass() to define the "Super" class. Also,
- // rewrite its classfile so that it returns ___yyy___ instead of ___xxx___. Changing the
- // classfile will guarantee that this class will NOT be loaded from the CDS archive.
- Class cls = (Class)defineClass.invoke(loader, buff, new Integer(0), new Integer(buff.length));
- System.out.println("Loaded : " + cls);
-
- return cls;
- }
- }
-
- /**
- * @return the number of occurrences of the <code>from</code> string that
- * have been replaced.
- */
- public static int replace(byte buff[], String from, String to) {
- if (to.length() != from.length()) {
- throw new RuntimeException("bad strings");
- }
- byte f[] = asciibytes(from);
- byte t[] = asciibytes(to);
- byte f0 = f[0];
-
- int numReplaced = 0;
- int max = buff.length - f.length;
- for (int i=0; i<max; ) {
- if (buff[i] == f0 && replace(buff, f, t, i)) {
- i += f.length;
- numReplaced ++;
- } else {
- i++;
- }
- }
- return numReplaced;
- }
-
- public static boolean replace(byte buff[], byte f[], byte t[], int i) {
- for (int x=0; x<f.length; x++) {
- if (buff[x+i] != f[x]) {
- return false;
- }
- }
- for (int x=0; x<f.length; x++) {
- buff[x+i] = t[x];
- }
- return true;
- }
-
- static byte[] asciibytes(String s) {
- byte b[] = new byte[s.length()];
- for (int i=0; i<b.length; i++) {
- b[i] = (byte)s.charAt(i);
- }
- return b;
- }
-
- public static Class defineClassFromJAR(ClassLoader loader, File jarFile, String className)
- throws FileNotFoundException, IOException, NoSuchMethodException, IllegalAccessException,
- InvocationTargetException {
- return defineClassFromJAR(loader, jarFile, className, null, null);
- }
-
- /**
- * Invoke the loader.defineClass() class method to define the named class stored in a JAR file.
- *
- * If a class exists both in the classpath, as well as in the list of URLs of a URLClassLoader,
- * by default, the URLClassLoader will not define the class, and instead will delegate to the
- * app loader. This method is an easy way to force the class to be defined by the URLClassLoader.
- *
- * Optionally, you can modify the contents of the classfile buffer. See comments in
- * defineModifiedClass.
- */
- public static Class defineClassFromJAR(ClassLoader loader, File jarFile, String className,
- String fromString, String toString)
- throws FileNotFoundException, IOException, NoSuchMethodException, IllegalAccessException,
- InvocationTargetException
- {
- byte[] buff = getClassFileFromJar(jarFile, className);
-
- if (fromString != null) {
- replace(buff, fromString, toString);
- }
-
- //System.out.println("Loading from: " + ent + " (" + buff.length + " bytes)");
-
- Method defineClass = ClassLoader.class.getDeclaredMethod("defineClass",
- buff.getClass(), int.class, int.class);
- defineClass.setAccessible(true);
- Class cls = (Class)defineClass.invoke(loader, buff, new Integer(0), new Integer(buff.length));
-
- //System.out.println("Loaded : " + cls);
- return cls;
- }
-
- public static byte[] getClassFileFromJar(File jarFile, String className) throws FileNotFoundException, IOException {
- JarFile jf = new JarFile(jarFile);
- JarEntry ent = jf.getJarEntry(className.replace('.', '/') + ".class");
-
- try (DataInputStream dis = new DataInputStream(jf.getInputStream(ent))) {
- byte[] buff = new byte[(int)ent.getSize()];
- dis.readFully(buff);
- return buff;
- }
- }
-}