1 /* 2 * Copyright (c) 2016, 2017, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 import java.util.Arrays; 25 26 public class TestJNICritical { 27 static { 28 System.loadLibrary("TestJNICritical"); 29 } 30 31 private static final int NUM_RUNS = 10000; 32 private static final int ARRAY_SIZE = 10000; 33 private static int[] a; 34 private static int[] b; 35 36 private static native void copyAtoB(int[] a, int[] b); 37 38 public static void main(String[] args) { 39 a = new int[ARRAY_SIZE]; 40 b = new int[ARRAY_SIZE]; 41 for (int i = 0; i < NUM_RUNS; i++) { 42 test(); 43 } 44 } 45 46 private static void test() { 47 int[] a1 = new int[ARRAY_SIZE]; 48 int[] b1 = new int[ARRAY_SIZE]; 49 fillArray(a); 50 copyAtoB(a, b); 51 copyAtoB(a1, b1); // Don't optimize out garbage arrays. 52 if (!Arrays.equals(a, b)) { 53 throw new RuntimeException("arrays not equal"); 54 } 55 } 56 57 private static void fillArray(int[] array) { 58 for (int i = 0; i < ARRAY_SIZE; i++) { 59 int val = (int) (Math.random() * Integer.MAX_VALUE); 60 array[i] = val; 61 } 62 } 63 }