| /* |
| * Copyright (c) 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. |
| */ |
| package jdk.vm.ci.services.internal; |
| |
| import java.lang.reflect.Method; |
| import java.util.Set; |
| |
| import jdk.vm.ci.services.Services; |
| |
| /** |
| * Reflection based access to API introduced in JDK 9. This allows the API to be used in code that |
| * must be compiled (but not executed) on JDK 8. |
| */ |
| public final class ReflectionAccessJDK { |
| |
| /** |
| * {@code Class.getModule()}. |
| */ |
| private static final Method getModule; |
| |
| /** |
| * {@code java.lang.Module.addOpens(String, Module)}. |
| */ |
| private static final Method addOpens; |
| |
| /** |
| * {@code java.lang.Module.getPackages(Module, String, Module)}. |
| */ |
| private static final Method getPackages; |
| |
| /** |
| * {@code java.lang.Module.isOpen(String, Module)}. |
| */ |
| private static final Method isOpenTo; |
| |
| /** |
| * Opens all JVMCI packages to the module of a given class. |
| * |
| * @param other all JVMCI packages will be opened to the module of this class |
| */ |
| @SuppressWarnings("unchecked") |
| public static void openJVMCITo(Class<?> other) { |
| try { |
| Object jvmci = getModule.invoke(Services.class); |
| Object otherModule = getModule.invoke(other); |
| if (jvmci != otherModule) { |
| Set<String> packages = (Set<String>) getPackages.invoke(jvmci); |
| for (String pkg : packages) { |
| boolean opened = (Boolean) isOpenTo.invoke(jvmci, pkg, otherModule); |
| if (!opened) { |
| addOpens.invoke(jvmci, pkg, otherModule); |
| } |
| } |
| } |
| } catch (Exception e) { |
| throw new InternalError(e); |
| } |
| } |
| |
| static { |
| try { |
| getModule = Class.class.getMethod("getModule"); |
| Class<?> moduleClass = getModule.getReturnType(); |
| getPackages = moduleClass.getMethod("getPackages"); |
| isOpenTo = moduleClass.getMethod("isOpen", String.class, moduleClass); |
| addOpens = moduleClass.getDeclaredMethod("addOpens", String.class, moduleClass); |
| } catch (NoSuchMethodException | SecurityException e) { |
| throw new InternalError(e); |
| } |
| } |
| } |