1/* 2 * Copyright (c) 2011 SAP SE. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test TestShortArraycopy 26 * @bug 7100935 27 * @summary verify that shorts are copied element-wise atomic. 28 * @run main/othervm -Xint TestShortArraycopy 29 * @run main/othervm -Xcomp -Xbatch TestShortArraycopy 30 * @author volker.simonis@gmail.com 31 */ 32 33public class TestShortArraycopy { 34 35 static short[] a1 = new short[8]; 36 static short[] a2 = new short[8]; 37 static short[] a3 = new short[8]; 38 39 static volatile boolean keepRunning = true; 40 41 public static void main(String[] args) throws InterruptedException { 42 43 for (int i = 0; i < a1.length ; i++) { 44 a1[i] = (short)0xffff; 45 a2[i] = (short)0xffff; 46 a3[i] = (short)0x0000; 47 } 48 Thread reader = new Thread() { 49 public void run() { 50 while (keepRunning) { 51 for (int j = 0; j < a1.length; j++) { 52 short s = a1[j]; 53 if (s != (short)0xffff && s != (short)0x0000) { 54 System.out.println("Error: s = " + s); 55 throw new RuntimeException("wrong result"); 56 57 } 58 } 59 } 60 } 61 }; 62 Thread writer = new Thread() { 63 public void run() { 64 for (int i = 0; i < 1000000; i++) { 65 System.arraycopy(a2, 5, a1, 3, 3); 66 System.arraycopy(a3, 5, a1, 3, 3); 67 } 68 } 69 }; 70 keepRunning = true; 71 reader.start(); 72 writer.start(); 73 writer.join(); 74 keepRunning = false; 75 reader.join(); 76 } 77} 78