| /* |
| * Copyright (c) 2018, Amazon and/or its affiliates. All rights reserved. |
| * Copyright (c) 2019, Azul Systems, Inc. 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 8231584 |
| * @library /lib/testlibrary |
| * @run main/othervm LoadLibraryTest |
| */ |
| |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| import java.nio.file.Path; |
| import java.net.MalformedURLException; |
| import java.net.URLClassLoader; |
| import java.net.URL; |
| |
| public class LoadLibraryTest { |
| static Thread thread1 = null; |
| static Thread thread2 = null; |
| |
| static volatile boolean thread1Ready = false; |
| |
| private static final String TEST_SRC = System.getProperty("test.src"); |
| private static final Path SRC_DIR = Paths.get(TEST_SRC, "src"); |
| private static final Path CLS_DIR = Paths.get("classes"); |
| |
| static TestClassLoader loader; |
| static void someLibLoad() { |
| try { |
| /* |
| FileSystems.getDefault(); |
| |
| // jdk/jdk: loads directly from Bootstrap Classloader (doesn't take lock on Runtime) |
| java.net.NetworkInterface.getNetworkInterfaces(); |
| |
| System.out.println(jdk.net.ExtendedSocketOptions.SO_FLOW_SLA); |
| */ |
| Class c = Class.forName("Target2", true, loader); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| static class TestClassLoader extends URLClassLoader { |
| boolean passed = false; |
| |
| public boolean passed() { |
| return passed; |
| } |
| |
| TestClassLoader() throws MalformedURLException { |
| super(new URL[] { new URL("file://" + CLS_DIR.toAbsolutePath().toString() + '/') }); |
| } |
| |
| public String findLibrary(String name) { |
| System.out.println("findLibrary " + name); |
| |
| if ("someLibrary".equals(name)) { |
| try { |
| synchronized(thread1) { |
| while(!thread1Ready) { |
| thread1.wait(); |
| } |
| thread1.notifyAll(); |
| } |
| |
| Thread.sleep(10000); |
| |
| System.out.println("Thread2 load"); |
| someLibLoad(); |
| |
| // no deadlock happened |
| passed = true; |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| return null; |
| } |
| |
| return super.findLibrary(name); |
| } |
| } |
| |
| |
| public static void main(String[] args) throws Exception { |
| loader = new TestClassLoader(); |
| |
| if (!CompilerUtils.compile(SRC_DIR, CLS_DIR)) { |
| throw new Exception("Can't compile"); |
| } |
| |
| thread1 = new Thread() { |
| public void run() { |
| try { |
| synchronized(this) { |
| thread1Ready = true; |
| thread1.notifyAll(); |
| thread1.wait(); |
| } |
| } catch(InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| |
| System.out.println("Thread1 load"); |
| someLibLoad(); |
| }; |
| }; |
| |
| thread2 = new Thread() { |
| public void run() { |
| try { |
| Class c = Class.forName("Target", true, loader); |
| System.out.println(c); |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| }; |
| }; |
| |
| thread1.setDaemon(true); |
| thread2.setDaemon(true); |
| |
| thread1.start(); |
| thread2.start(); |
| |
| thread1.join(); |
| thread2.join(); |
| |
| if (!loader.passed()) { |
| throw new RuntimeException("FAIL"); |
| } |
| } |
| } |