1 /* 2 * Copyright (c) 2015, 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 import java.lang.invoke.MethodHandle; 25 import java.lang.invoke.MethodHandleProxies; 26 import java.lang.invoke.MethodHandles; 27 import java.lang.invoke.MethodType; 28 import java.lang.reflect.Constructor; 29 import java.lang.reflect.InvocationHandler; 30 import java.lang.reflect.InvocationTargetException; 31 32 import org.testng.annotations.BeforeTest; 33 import org.testng.annotations.Test; 34 import static org.testng.Assert.*; 35 36 /** 37 * @test 38 * @summary test MethodHandleProxies that adds qualified export of sun.invoke 39 * from java.base to a dynamic module 40 * @run testng ProxyForMethodHandle 41 */ 42 public class ProxyForMethodHandle { 43 /** 44 * MethodHandleProxies will add qualified export of sun.invoke from java.base 45 * to a dynamic module 46 */ 47 @Test testRunnableMethodHandle()48 public static void testRunnableMethodHandle() throws Exception { 49 MethodHandles.Lookup lookup = MethodHandles.lookup(); 50 MethodType mt = MethodType.methodType(void.class); 51 MethodHandle mh = lookup.findStatic(ProxyForMethodHandle.class, "runForRunnable", mt); 52 Runnable proxy = MethodHandleProxies.asInterfaceInstance(Runnable.class, mh); 53 proxy.run(); 54 55 Class<?> proxyClass = proxy.getClass(); 56 Module target = proxyClass.getModule(); 57 assertDynamicModule(target, proxyClass.getClassLoader(), proxyClass); 58 } 59 runForRunnable()60 static void runForRunnable() { 61 System.out.println("runForRunnable"); 62 } 63 assertDynamicModule(Module m, ClassLoader ld, Class<?> proxyClass)64 public static void assertDynamicModule(Module m, ClassLoader ld, Class<?> proxyClass) { 65 if (!m.isNamed() || !m.getName().startsWith("jdk.proxy")) { 66 throw new RuntimeException(m.getName() + " not dynamic module"); 67 } 68 69 if (ld != m.getClassLoader() || proxyClass.getClassLoader() != ld) { 70 throw new RuntimeException("unexpected class loader"); 71 } 72 73 try { 74 Constructor<?> cons = proxyClass.getConstructor(InvocationHandler.class); 75 cons.newInstance(handler); 76 throw new RuntimeException("Expected IllegalAccessException: " + proxyClass); 77 } catch (IllegalAccessException e) { 78 // expected 79 } catch (NoSuchMethodException|InstantiationException|InvocationTargetException e) { 80 throw new RuntimeException(e); 81 } 82 } 83 private final static InvocationHandler handler = 84 (proxy, m, params) -> { throw new RuntimeException(m.toString()); }; 85 } 86