/* * Copyright (C) 2021 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.io.File; import java.lang.reflect.Constructor; import java.lang.reflect.Method; final class Main { public static void main(String[] args) throws Exception { System.loadLibrary(args[0]); MyLocalClass.callMethod(); pkg1.SubClass.callMethod(); loadClass(); } public static void loadClass() throws Exception { Class pathClassLoader = Class.forName("dalvik.system.PathClassLoader"); if (pathClassLoader == null) { throw new AssertionError("Couldn't find path class loader class"); } Constructor constructor = pathClassLoader.getDeclaredConstructor(String.class, String.class, ClassLoader.class); ClassLoader loader = (ClassLoader) constructor.newInstance( DEX_FILE, LIBRARY_SEARCH_PATH, ClassLoader.getSystemClassLoader()); Class otherClass = loader.loadClass("Caller"); // Run the method in interpreter / AOT mode. otherClass.getMethod("doCall").invoke(null); // Run the method in JIT mode. ensureJitCompiled(otherClass, "doCall"); otherClass.getMethod("doCall").invoke(null); } private static final String LIBRARY_SEARCH_PATH = System.getProperty("java.library.path"); private static final String DEX_LOCATION = System.getenv("DEX_LOCATION"); private static final String DEX_FILE = new File(DEX_LOCATION, "827-resolve-method-ex.jar").getAbsolutePath(); private static native void ensureJitCompiled(Class cls, String methodName); } class MyLocalClass extends pkg1.SubClass { }