1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 public class Main { 18 static volatile long long_volatile; 19 static volatile double double_volatile; 20 main(String[] args)21 public static void main(String[] args) { 22 checkVolatileUpdate(0L); 23 checkVolatileUpdate(Long.MAX_VALUE); 24 checkVolatileUpdate(Long.MIN_VALUE); 25 26 checkVolatileUpdate(0.0); 27 checkVolatileUpdate(Double.MAX_VALUE); 28 checkVolatileUpdate(-Double.MAX_VALUE); 29 } 30 $opt$update(long a)31 public static long $opt$update(long a) { 32 long_volatile = a; 33 return long_volatile; 34 } 35 $opt$update(double a)36 public static double $opt$update(double a) { 37 double_volatile = a; 38 return double_volatile; 39 } 40 checkVolatileUpdate(long value)41 public static void checkVolatileUpdate(long value) { 42 if (value != $opt$update(value)) { 43 throw new RuntimeException("Volatile update failed for long:" + value); 44 } 45 } 46 checkVolatileUpdate(double value)47 public static void checkVolatileUpdate(double value) { 48 if (value != $opt$update(value)) { 49 throw new RuntimeException("Volatile update failed for double:" + value); 50 } 51 } 52 53 } 54