| /* |
| * Copyright (c) 2009, 2017, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4735126 |
| * @summary (cl) ClassLoader.loadClass locks all instances in chain when delegating |
| * @modules java.base/java.lang:open |
| * jdk.compiler |
| * @library /test/lib |
| * @build jdk.test.lib.compiler.CompilerUtils |
| * @run main/othervm -Xlog:class+load DelegateTest one-way |
| * @run main/othervm -Xlog:class+load DelegateTest cross |
| */ |
| |
| import java.io.File; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| |
| import jdk.test.lib.compiler.CompilerUtils; |
| |
| public class DelegateTest implements Runnable { |
| |
| private static final Path TEST_DIR = Paths.get(System.getProperty("user.dir", ".")); |
| private static final Path SRC_DIR = Paths.get(System.getProperty("test.src"), "src"); |
| |
| private String id; |
| private DelegatingLoader dl; |
| private String startClass; |
| |
| private static DelegatingLoader saLoader, sbLoader; |
| |
| public static void log(String line) { |
| System.out.println(line); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (!CompilerUtils.compile(SRC_DIR, TEST_DIR)) { |
| throw new RuntimeException("Failed to compile " |
| + SRC_DIR.toAbsolutePath().toString()); |
| } |
| |
| URL[] url = new URL[1]; |
| try { |
| url[0] = new URL("file://" + TEST_DIR + File.separator); |
| } catch (MalformedURLException e) { |
| e.printStackTrace(); |
| } |
| // Set up Classloader delegation hierarchy |
| saLoader = new DelegatingLoader(url); |
| sbLoader = new DelegatingLoader(url); |
| |
| String[] saClasses = { "comSA.SupBob", "comSA.Alice" }; |
| String[] sbClasses = { "comSB.SupAlice", "comSB.Bob" }; |
| |
| saLoader.setDelegate(sbClasses, sbLoader); |
| sbLoader.setDelegate(saClasses, saLoader); |
| |
| // test one-way delegate |
| String testType = args[0]; |
| if (testType.equals("one-way")) { |
| test("comSA.Alice", "comSA.SupBob"); |
| } else if (testType.equals("cross")) { |
| // test cross delegate |
| test("comSA.Alice", "comSB.Bob"); |
| } else { |
| System.out.println("ERROR: unsupported - " + testType); |
| } |
| } |
| |
| private static void test(String clsForSA, String clsForSB) throws InterruptedException { |
| DelegateTest ia = new DelegateTest("SA", saLoader, clsForSA); |
| DelegateTest ib = new DelegateTest("SB", sbLoader, clsForSB); |
| Thread ta = new Thread(ia); |
| Thread tb = new Thread(ib); |
| ta.start(); |
| tb.start(); |
| ta.join(); |
| tb.join(); |
| } |
| |
| public static void sleep() { |
| try { |
| Thread.sleep(500); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| log("Thread interrupted"); |
| } |
| } |
| |
| private DelegateTest(String id, DelegatingLoader dl, String startClass) { |
| this.id = id; |
| this.dl = dl; |
| this.startClass = startClass; |
| } |
| |
| public void run() { |
| log("Spawned thread " + id + " running"); |
| try { |
| // To mirror the WAS deadlock, need to ensure class load |
| // is routed via the VM. |
| Class.forName(startClass, true, dl); |
| } catch (ClassNotFoundException e) { |
| e.printStackTrace(); |
| } |
| log("Thread " + id + " terminating"); |
| } |
| } |