| /* |
| * Copyright 2011 SAP AG. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test TestShortArraycopy |
| * @bug 7100935 |
| * @summary verify that shorts are copied element-wise atomic. |
| * @run main/othervm -Xint TestShortArraycopy |
| * @run main/othervm -Xcomp -Xbatch TestShortArraycopy |
| * @author volker.simonis@gmail.com |
| */ |
| |
| public class TestShortArraycopy { |
| |
| static short[] a1 = new short[8]; |
| static short[] a2 = new short[8]; |
| static short[] a3 = new short[8]; |
| |
| static volatile boolean keepRunning = true; |
| |
| public static void main(String[] args) throws InterruptedException { |
| |
| for (int i = 0; i < a1.length ; i++) { |
| a1[i] = (short)0xffff; |
| a2[i] = (short)0xffff; |
| a3[i] = (short)0x0000; |
| } |
| Thread reader = new Thread() { |
| public void run() { |
| while (keepRunning) { |
| for (int j = 0; j < a1.length; j++) { |
| short s = a1[j]; |
| if (s != (short)0xffff && s != (short)0x0000) { |
| System.out.println("Error: s = " + s); |
| throw new RuntimeException("wrong result"); |
| |
| } |
| } |
| } |
| } |
| }; |
| Thread writer = new Thread() { |
| public void run() { |
| for (int i = 0; i < 1000000; i++) { |
| System.arraycopy(a2, 5, a1, 3, 3); |
| System.arraycopy(a3, 5, a1, 3, 3); |
| } |
| } |
| }; |
| keepRunning = true; |
| reader.start(); |
| writer.start(); |
| writer.join(); |
| keepRunning = false; |
| reader.join(); |
| } |
| } |