| /* |
| * Copyright (C) 2014 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.lang.reflect.Field; |
| import sun.misc.Unsafe; |
| |
| public class UnsafeTest { |
| static { |
| System.loadLibrary("arttest"); |
| } |
| |
| private static void check(int actual, int expected, String msg) { |
| if (actual != expected) { |
| System.logE(msg + " : " + actual + " != " + expected); |
| System.exit(-1); |
| } |
| } |
| |
| private static Unsafe getUnsafe() throws Exception { |
| Class<?> unsafeClass = Class.forName("sun.misc.Unsafe"); |
| Field f = unsafeClass.getDeclaredField("theUnsafe"); |
| f.setAccessible(true); |
| return (Unsafe) f.get(null); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| Unsafe unsafe = getUnsafe(); |
| check(unsafe.arrayBaseOffset(boolean[].class), vmArrayBaseOffset(boolean[].class), |
| "Unsafe.arrayBaseOffset(boolean[])"); |
| check(unsafe.arrayBaseOffset(byte[].class), vmArrayBaseOffset(byte[].class), |
| "Unsafe.arrayBaseOffset(byte[])"); |
| check(unsafe.arrayBaseOffset(char[].class), vmArrayBaseOffset(char[].class), |
| "Unsafe.arrayBaseOffset(char[])"); |
| check(unsafe.arrayBaseOffset(double[].class), vmArrayBaseOffset(double[].class), |
| "Unsafe.arrayBaseOffset(double[])"); |
| check(unsafe.arrayBaseOffset(float[].class), vmArrayBaseOffset(float[].class), |
| "Unsafe.arrayBaseOffset(float[])"); |
| check(unsafe.arrayBaseOffset(int[].class), vmArrayBaseOffset(int[].class), |
| "Unsafe.arrayBaseOffset(int[])"); |
| check(unsafe.arrayBaseOffset(long[].class), vmArrayBaseOffset(long[].class), |
| "Unsafe.arrayBaseOffset(long[])"); |
| check(unsafe.arrayBaseOffset(Object[].class), vmArrayBaseOffset(Object[].class), |
| "Unsafe.arrayBaseOffset(Object[])"); |
| |
| check(unsafe.arrayIndexScale(boolean[].class), vmArrayIndexScale(boolean[].class), |
| "Unsafe.arrayIndexScale(boolean[])"); |
| check(unsafe.arrayIndexScale(byte[].class), vmArrayIndexScale(byte[].class), |
| "Unsafe.arrayIndexScale(byte[])"); |
| check(unsafe.arrayIndexScale(char[].class), vmArrayIndexScale(char[].class), |
| "Unsafe.arrayIndexScale(char[])"); |
| check(unsafe.arrayIndexScale(double[].class), vmArrayIndexScale(double[].class), |
| "Unsafe.arrayIndexScale(double[])"); |
| check(unsafe.arrayIndexScale(float[].class), vmArrayIndexScale(float[].class), |
| "Unsafe.arrayIndexScale(float[])"); |
| check(unsafe.arrayIndexScale(int[].class), vmArrayIndexScale(int[].class), |
| "Unsafe.arrayIndexScale(int[])"); |
| check(unsafe.arrayIndexScale(long[].class), vmArrayIndexScale(long[].class), |
| "Unsafe.arrayIndexScale(long[])"); |
| check(unsafe.arrayIndexScale(Object[].class), vmArrayIndexScale(Object[].class), |
| "Unsafe.arrayIndexScale(Object[])"); |
| } |
| |
| private static native int vmArrayBaseOffset(Class clazz); |
| private static native int vmArrayIndexScale(Class clazz); |
| } |