1 /* 2 * Copyright (c) 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 CheckCachedResolvedReferencesApp { 31 public static void main(String args[]) throws Exception { 32 String path = args[0]; 33 URL url = new File(path).toURI().toURL(); 34 URL[] urls = new URL[] {url}; 35 36 URLClassLoader loader = new URLClassLoader(urls); 37 Class hello = loader.loadClass("Hello"); 38 System.out.println("Loaded " + hello + " from " + url + " using loader " + loader); 39 40 WhiteBox wb = WhiteBox.getWhiteBox(); 41 42 if (!wb.areOpenArchiveHeapObjectsMapped()) { 43 System.out.println("Archived open_archive_heap objects are not mapped."); 44 System.out.println("This may happen during normal operation. Test Skipped."); 45 return; 46 } 47 48 // CheckCachedResolvedReferencesApp is shared class and loaded by the 49 // AppClassLoader. It should have cached resolved_references. 50 if (wb.isSharedClass(CheckCachedResolvedReferencesApp.class)) { 51 Object refs1 = wb.getResolvedReferences(CheckCachedResolvedReferencesApp.class); 52 if (refs1 != null && wb.isShared(refs1)) { 53 System.out.println( 54 "resolved references from CheckCachedResolvedReferencesApp is cached"); 55 } else { 56 throw new RuntimeException( 57 "FAILED. CheckCachedResolvedReferencesApp has no cached resolved references"); 58 } 59 } 60 61 // Hello is shared class and loaded by the 'loader' defined in current app. 62 // It should not have cached resolved_references. 63 if (wb.isSharedClass(hello)) { 64 Object refs2 = wb.getResolvedReferences(hello); 65 if (refs2 != null) { 66 if (!wb.isShared(refs2)) { 67 System.out.println("resolved references from hello is not cached"); 68 } else { 69 throw new RuntimeException( 70 "FAILED. Hello has unexpected cached resolved references"); 71 } 72 } else { 73 throw new RuntimeException("FAILED. Hello has no resolved references"); 74 } 75 } 76 } 77 }