Thu, 19 Sep 2013 09:36:51 -0700
Added tag jdk8-b108 for changeset 85072013aad4
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | public class VictimClassLoader extends ClassLoader { |
aoqi@0 | 26 | public static long counter = 0; |
aoqi@0 | 27 | |
aoqi@0 | 28 | private int which = (int) ++counter; |
aoqi@0 | 29 | |
aoqi@0 | 30 | protected VictimClassLoader() { |
aoqi@0 | 31 | super(VictimClassLoader.class.getClassLoader()); |
aoqi@0 | 32 | } |
aoqi@0 | 33 | |
aoqi@0 | 34 | protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException { |
aoqi@0 | 35 | Class c; |
aoqi@0 | 36 | if (!name.endsWith("Victim")) { |
aoqi@0 | 37 | c = super.loadClass(name, resolve); |
aoqi@0 | 38 | return c; |
aoqi@0 | 39 | } |
aoqi@0 | 40 | |
aoqi@0 | 41 | c = findLoadedClass(name); |
aoqi@0 | 42 | if (c != null) { |
aoqi@0 | 43 | return c; |
aoqi@0 | 44 | } |
aoqi@0 | 45 | |
aoqi@0 | 46 | byte[] buf = readClassFile(name); |
aoqi@0 | 47 | c = defineClass(name, buf, 0, buf.length); |
aoqi@0 | 48 | resolveClass(c); |
aoqi@0 | 49 | |
aoqi@0 | 50 | if (c.getClassLoader() != this) { |
aoqi@0 | 51 | throw new AssertionError(); |
aoqi@0 | 52 | } |
aoqi@0 | 53 | |
aoqi@0 | 54 | Test8003720.println("loaded " + c + "#" + System.identityHashCode(c) + " in " + c.getClassLoader()); |
aoqi@0 | 55 | return c; |
aoqi@0 | 56 | } |
aoqi@0 | 57 | |
aoqi@0 | 58 | static byte[] readClassFile(String name) { |
aoqi@0 | 59 | try { |
aoqi@0 | 60 | String rname = name.substring(name.lastIndexOf('.') + 1) + ".class"; |
aoqi@0 | 61 | java.net.URL url = VictimClassLoader.class.getResource(rname); |
aoqi@0 | 62 | Test8003720.println("found " + rname + " = " + url); |
aoqi@0 | 63 | |
aoqi@0 | 64 | java.net.URLConnection connection = url.openConnection(); |
aoqi@0 | 65 | int contentLength = connection.getContentLength(); |
aoqi@0 | 66 | byte[] buf = readFully(connection.getInputStream(), contentLength); |
aoqi@0 | 67 | |
aoqi@0 | 68 | return Asmator.fixup(buf); |
aoqi@0 | 69 | } catch (java.io.IOException ex) { |
aoqi@0 | 70 | throw new Error(ex); |
aoqi@0 | 71 | } |
aoqi@0 | 72 | } |
aoqi@0 | 73 | |
aoqi@0 | 74 | static byte[] readFully(java.io.InputStream in, int len) throws java.io.IOException { |
aoqi@0 | 75 | // Warning here: |
aoqi@0 | 76 | return sun.misc.IOUtils.readFully(in, len, true); |
aoqi@0 | 77 | } |
aoqi@0 | 78 | |
aoqi@0 | 79 | public void finalize() { |
aoqi@0 | 80 | Test8003720.println("Goodbye from " + this); |
aoqi@0 | 81 | } |
aoqi@0 | 82 | |
aoqi@0 | 83 | public String toString() { |
aoqi@0 | 84 | return "VictimClassLoader#" + which; |
aoqi@0 | 85 | } |
aoqi@0 | 86 | } |