J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @bug 4894899 |
| 27 | * @summary Test various cases of passing java.nio.ByteBuffers |
| 28 | * to defineClass(). |
| 29 | * |
| 30 | * @build DefineClassByteBuffer TestClass |
| 31 | * @run main DefineClassByteBuffer |
| 32 | */ |
| 33 | |
| 34 | import java.security.*; |
| 35 | import java.nio.*; |
| 36 | import java.nio.channels.*; |
| 37 | import java.io.*; |
| 38 | |
| 39 | public class DefineClassByteBuffer { |
| 40 | |
| 41 | static void test(ClassLoader cl) throws Exception { |
| 42 | Class c = Class.forName("TestClass", true, cl); |
| 43 | if (!"TestClass".equals(c.getName())) { |
| 44 | throw new RuntimeException("Got wrong class: " + c); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | public static void main(String arg[]) throws Exception { |
| 49 | ClassLoader[] cls = new ClassLoader[DummyClassLoader.MAX_TYPE]; |
| 50 | for (int i = 0; i < cls.length; i++) { |
| 51 | cls[i] = new DummyClassLoader(i); |
| 52 | } |
| 53 | |
| 54 | /* Create several instances of the class using different classloaders, |
| 55 | which are using different types of ByteBuffer. */ |
| 56 | for (int i = 0; i < cls.length; i++) { |
| 57 | test(cls[i]); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | /** Always loads the same class, using various types of ByteBuffers */ |
| 62 | public static class DummyClassLoader extends SecureClassLoader { |
| 63 | |
| 64 | public static final String CLASS_NAME = "TestClass"; |
| 65 | |
| 66 | public static final int MAPPED_BUFFER = 0; |
| 67 | public static final int DIRECT_BUFFER = 1; |
| 68 | public static final int ARRAY_BUFFER = 2; |
| 69 | public static final int WRAPPED_BUFFER = 3; |
| 70 | public static final int READ_ONLY_ARRAY_BUFFER = 4; |
| 71 | public static final int READ_ONLY_DIRECT_BUFFER = 5; |
| 72 | public static final int DUP_ARRAY_BUFFER = 6; |
| 73 | public static final int DUP_DIRECT_BUFFER = 7; |
| 74 | public static final int MAX_TYPE = 7; |
| 75 | |
| 76 | int loaderType; |
| 77 | |
| 78 | DummyClassLoader(int loaderType) { |
| 79 | this.loaderType = loaderType; |
| 80 | } |
| 81 | |
| 82 | static ByteBuffer[] buffers = new ByteBuffer[MAX_TYPE + 1]; |
| 83 | |
| 84 | static ByteBuffer readClassFile(String name) { |
| 85 | try { |
| 86 | File f = new File(System.getProperty("test.classes", "."), |
| 87 | name); |
| 88 | FileInputStream fin = new FileInputStream(f); |
| 89 | FileChannel fc = fin.getChannel(); |
| 90 | return fc.map(FileChannel.MapMode.READ_ONLY, 0, fc.size()); |
| 91 | } catch (FileNotFoundException e) { |
| 92 | throw new RuntimeException("Can't open file: " + name, e); |
| 93 | } catch (IOException e) { |
| 94 | throw new RuntimeException("Can't open file: " + name, e); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | static { |
| 99 | /* create a bunch of different ByteBuffers, starting with a mapped |
| 100 | buffer from a class file, and create various duplicate and wrapped |
| 101 | buffers. */ |
| 102 | buffers[MAPPED_BUFFER] = readClassFile(CLASS_NAME + ".class"); |
| 103 | byte[] array = new byte[buffers[MAPPED_BUFFER].limit()]; |
| 104 | |
| 105 | buffers[DIRECT_BUFFER] = ByteBuffer.allocateDirect(array.length); |
| 106 | buffers[DIRECT_BUFFER].put(array); |
| 107 | |
| 108 | buffers[ARRAY_BUFFER] = ByteBuffer.allocate(array.length); |
| 109 | buffers[ARRAY_BUFFER].put(array); |
| 110 | |
| 111 | buffers[WRAPPED_BUFFER] = ByteBuffer.wrap(array); |
| 112 | |
| 113 | buffers[READ_ONLY_ARRAY_BUFFER] = buffers[ARRAY_BUFFER].asReadOnlyBuffer(); |
| 114 | |
| 115 | buffers[READ_ONLY_DIRECT_BUFFER] = buffers[DIRECT_BUFFER].asReadOnlyBuffer(); |
| 116 | |
| 117 | buffers[DUP_ARRAY_BUFFER] = buffers[ARRAY_BUFFER].duplicate(); |
| 118 | |
| 119 | buffers[DUP_DIRECT_BUFFER] = buffers[DIRECT_BUFFER].duplicate(); |
| 120 | } |
| 121 | |
| 122 | public Class findClass(String name) { |
| 123 | CodeSource cs = null; |
| 124 | return defineClass(name, buffers[loaderType], cs); |
| 125 | } |
| 126 | } /* DummyClassLoader */ |
| 127 | |
| 128 | } /* DefineClassByteBuffer */ |