J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1999 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* |
| 25 | * @test |
| 26 | * @summary Basic functional test of ThreadLocal |
| 27 | * @author Josh Bloch |
| 28 | */ |
| 29 | |
| 30 | public class Basic { |
| 31 | static ThreadLocal n = new ThreadLocal() { |
| 32 | int i = 0; |
| 33 | protected synchronized Object initialValue() { |
| 34 | return new Integer(i++); |
| 35 | } |
| 36 | }; |
| 37 | |
| 38 | public static void main(String args[]) throws Exception { |
| 39 | int threadCount = 100; |
| 40 | Thread th[] = new Thread[threadCount]; |
| 41 | final int x[] = new int[threadCount]; |
| 42 | |
| 43 | // Start the threads |
| 44 | for(int i=0; i<threadCount; i++) { |
| 45 | th[i] = new Thread() { |
| 46 | public void run() { |
| 47 | int threadId = ((Integer)(n.get())).intValue(); |
| 48 | for (int j=0; j<threadId; j++) { |
| 49 | x[threadId]++; |
| 50 | Thread.currentThread().yield(); |
| 51 | } |
| 52 | } |
| 53 | }; |
| 54 | th[i].start(); |
| 55 | } |
| 56 | |
| 57 | // Wait for the threads to finish |
| 58 | for(int i=0; i<threadCount; i++) |
| 59 | th[i].join(); |
| 60 | |
| 61 | // Check results |
| 62 | for(int i=0; i<threadCount; i++) |
| 63 | if (x[i] != i) |
| 64 | throw(new Exception("x[" + i + "] =" + x[i])); |
| 65 | } |
| 66 | } |