J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 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 remove method for ThreadLocal |
| 27 | * @author Seetharama Avadhanam |
| 28 | */ |
| 29 | |
| 30 | public class TLRemoveTest { |
| 31 | private static final int INITIAL_VALUE = 101; |
| 32 | private static final int REMOVE_SET_VALUE = 102; |
| 33 | |
| 34 | static ThreadLocal<Integer> n = new ThreadLocal<Integer>() { |
| 35 | protected synchronized Integer initialValue() { |
| 36 | return INITIAL_VALUE; |
| 37 | } |
| 38 | }; |
| 39 | |
| 40 | public static void main(String args[]) throws Throwable { |
| 41 | int threadCount = 100; |
| 42 | final int[] removeNode = {10,20,45,38}; |
| 43 | // ThreadLocal values will be removed for these threads. |
| 44 | final int[] removeAndSet = {12,34,10}; |
| 45 | // ThreadLocal values will be removed and sets new values.. |
| 46 | |
| 47 | Thread th[] = new Thread[threadCount]; |
| 48 | final int x[] = new int[threadCount]; |
| 49 | final Throwable exceptions[] = new Throwable[threadCount]; |
| 50 | |
| 51 | for(int i = 0; i<threadCount; i++) { |
| 52 | final int threadId = i; |
| 53 | th[i] = new Thread() { |
| 54 | public void run() { |
| 55 | try{ |
| 56 | n.set(threadId); // Sets threadId as threadlocal value... |
| 57 | for (int j = 0; j<threadId; j++) |
| 58 | Thread.currentThread().yield(); |
| 59 | |
| 60 | // To remove the ThreadLocal .... |
| 61 | for(int removeId : removeNode) |
| 62 | if(threadId == removeId){ |
| 63 | n.remove(); // Removes ThreadLocal values.. |
| 64 | break; |
| 65 | } |
| 66 | |
| 67 | // To remove the ThreadLocal value and set new value ... |
| 68 | for(int removeId : removeAndSet) |
| 69 | if(threadId == removeId){ |
| 70 | n.remove(); // Removes the ThreadLocal Value... |
| 71 | n.set(REMOVE_SET_VALUE); /* Setting new Values to |
| 72 | ThreadLocal */ |
| 73 | break; |
| 74 | } |
| 75 | /* Storing the threadlocal values in 'x' |
| 76 | ...so that it can be used for checking results... */ |
| 77 | x[threadId] = n.get(); |
| 78 | } |
| 79 | catch(Throwable ex){ |
| 80 | exceptions[threadId] = ex; |
| 81 | } |
| 82 | } |
| 83 | }; |
| 84 | th[i].start(); |
| 85 | } |
| 86 | |
| 87 | // Wait for the threads to finish |
| 88 | for(int i = 0; i<threadCount; i++) |
| 89 | th[i].join(); |
| 90 | |
| 91 | // Check results |
| 92 | for(int i = 0; i<threadCount; i++){ |
| 93 | int checkValue = i; |
| 94 | |
| 95 | /* If the remove method is called then the ThreadLocal value will |
| 96 | * be its initial value */ |
| 97 | for(int removeId : removeNode) |
| 98 | if(removeId == i){ |
| 99 | checkValue = INITIAL_VALUE; |
| 100 | break; |
| 101 | } |
| 102 | |
| 103 | for(int removeId : removeAndSet) |
| 104 | if(removeId == i){ |
| 105 | checkValue = REMOVE_SET_VALUE; |
| 106 | break; |
| 107 | } |
| 108 | |
| 109 | if(exceptions[i] != null) |
| 110 | throw(exceptions[i]); |
| 111 | if(x[i] != checkValue) |
| 112 | throw(new Throwable("x[" + i + "] =" + x[i])); |
| 113 | } |
| 114 | } |
| 115 | } |