111 lines
4.4 KiB
Java
111 lines
4.4 KiB
Java
/*
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* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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import java.io.*;
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import java.net.*;
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import sun.hotspot.WhiteBox;
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public class DuplicatedCustomApp {
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static WhiteBox wb = WhiteBox.getWhiteBox();
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static URLClassLoader loaders[];
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// If DuplicatedCustomApp.class is loaded from JAR file, it means we are dumping the
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// dynamic archive.
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static boolean is_dynamic_dumping = !wb.isSharedClass(DuplicatedCustomApp.class);
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static boolean is_running_with_dynamic_archive = !is_dynamic_dumping;
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public static void main(String args[]) throws Exception {
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String path = args[0];
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URL url = new File(path).toURI().toURL();
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URL[] urls = new URL[] {url};
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System.out.println(path);
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System.out.println(url);
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int num_loops = 1;
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if (args.length > 1) {
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num_loops = Integer.parseInt(args[1]);
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}
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loaders = new URLClassLoader[num_loops];
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for (int i = 0; i < num_loops; i++) {
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loaders[i] = new URLClassLoader(urls);
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}
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if (is_dynamic_dumping) {
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// Try to load the super interfaces of CustomLoadee2 in different orders
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for (int i = 0; i < num_loops; i++) {
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int a = (i + 1) % num_loops;
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loaders[a].loadClass("CustomInterface2_ia");
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}
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for (int i = 0; i < num_loops; i++) {
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int a = (i + 2) % num_loops;
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loaders[a].loadClass("CustomInterface2_ib");
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}
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}
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for (int i = 0; i < num_loops; i++) {
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System.out.println("============================ LOOP = " + i);
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URLClassLoader urlClassLoader = loaders[i];
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test(i, urlClassLoader, "CustomLoadee");
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test(i, urlClassLoader, "CustomInterface2_ia");
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test(i, urlClassLoader, "CustomInterface2_ib");
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test(i, urlClassLoader, "CustomLoadee2");
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test(i, urlClassLoader, "CustomLoadee3");
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test(i, urlClassLoader, "CustomLoadee3Child");
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}
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}
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private static void test(int i, URLClassLoader urlClassLoader, String name) throws Exception {
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Class c = urlClassLoader.loadClass(name);
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try {
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c.newInstance(); // make sure the class is linked so it can be archived
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} catch (Throwable t) {}
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boolean is_shared = wb.isSharedClass(c);
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System.out.println("Class = " + c + ", loaded from " + (is_shared ? "CDS" : "Jar"));
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System.out.println("Loader = " + c.getClassLoader());
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// [1] Check that the loaded class is defined by the correct loader
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if (c.getClassLoader() != urlClassLoader) {
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throw new RuntimeException("c.getClassLoader() == " + c.getClassLoader() +
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", expected == " + urlClassLoader);
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}
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if (is_running_with_dynamic_archive) {
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// There's only one copy of the shared class of <name> in the
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// CDS archive.
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if (i == 0) {
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// The first time we must be able to load it from CDS.
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if (!is_shared) {
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throw new RuntimeException("Must be loaded from CDS");
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}
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} else {
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// All subsequent times, we must load this from JAR file.
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if (is_shared) {
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throw new RuntimeException("Must be loaded from JAR");
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}
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}
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}
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}
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}
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