1 /* 2 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 import java.io.File; 26 import java.net.URL; 27 import java.net.URLClassLoader; 28 import sun.hotspot.WhiteBox; 29 30 public class SameNameUnrelatedLoaders { 31 public static void main(String args[]) throws Exception { 32 String path = args[0]; 33 String testCase = args[1]; 34 URL url = new File(path).toURI().toURL(); 35 URL[] urls = new URL[] {url}; 36 37 ClassLoader appLoader = SameNameUnrelatedLoaders.class.getClassLoader(); 38 URLClassLoader ldr01 = null; 39 URLClassLoader ldr02 = null; 40 41 switch (testCase) { 42 case "FpBoth": 43 ldr01 = new URLClassLoader(urls); 44 ldr02 = new URLClassLoader(urls); 45 break; 46 47 default: 48 throw new IllegalArgumentException("Invalid testCase ID"); 49 } 50 51 52 Class class01 = ldr01.loadClass("CustomLoadee"); 53 Class class02 = ldr02.loadClass("CustomLoadee"); 54 55 System.out.println("class01 = " + class01); 56 System.out.println("class02 = " + class02); 57 58 if (class01.getClassLoader() != ldr01) { 59 throw new RuntimeException("class01 loaded by wrong loader"); 60 } 61 if (class02.getClassLoader() != ldr02) { 62 throw new RuntimeException("class02 loaded by wrong loader"); 63 } 64 65 if (true) { 66 if (class01.isAssignableFrom(class02)) { 67 throw new RuntimeException("assignable condition failed"); 68 } 69 70 Object obj01 = class01.newInstance(); 71 Object obj02 = class02.newInstance(); 72 73 if (class01.isInstance(obj02)) { 74 throw new RuntimeException("instance relationship condition 01 failed"); 75 } 76 if (class02.isInstance(obj01)) { 77 throw new RuntimeException("instance relationship condition 02 failed"); 78 } 79 } 80 81 WhiteBox wb = WhiteBox.getWhiteBox(); 82 if (wb.isSharedClass(SameNameUnrelatedLoaders.class)) { 83 boolean class1Shared = wb.isSharedClass(class01); 84 boolean class2Shared = wb.isSharedClass(class02); 85 86 if (testCase.equals("FpBoth")) { 87 if (!class1Shared) { 88 throw new RuntimeException("first class is not shared"); 89 } 90 91 if (class2Shared) { 92 throw new RuntimeException("second class is shared, " + 93 "and it should not be - first come first serve violation"); 94 } 95 } else { 96 if (! (class1Shared && class2Shared) ) 97 throw new RuntimeException("both classes expected to be shared, but are not"); 98 } 99 } 100 } 101 }