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 InheritableThreadLocal |
| 27 | * @author Seetharama Avadhanam |
| 28 | */ |
| 29 | |
| 30 | public class ITLRemoveTest { |
| 31 | private static final int INITIAL_VALUE = Integer.MIN_VALUE; |
| 32 | private static final int REMOVE_SET_VALUE = Integer.MAX_VALUE; |
| 33 | |
| 34 | static InheritableThreadLocal<Integer> n = new InheritableThreadLocal<Integer>() { |
| 35 | protected Integer initialValue() { |
| 36 | return INITIAL_VALUE; |
| 37 | } |
| 38 | |
| 39 | protected Integer childValue(Integer parentValue) { |
| 40 | return(parentValue + 1); |
| 41 | } |
| 42 | }; |
| 43 | |
| 44 | static int threadCount = 100; |
| 45 | static int x[]; |
| 46 | static Throwable exceptions[]; |
| 47 | static final int[] removeNode = {10,20,45,38,88}; |
| 48 | /* ThreadLocal values will be removed for these threads. */ |
| 49 | static final int[] removeAndSet = {12,34,10}; |
| 50 | /* ThreadLocal values will be removed and sets new values */ |
| 51 | |
| 52 | public static void main(String args[]) throws Throwable { |
| 53 | x = new int[threadCount]; |
| 54 | exceptions = new Throwable[threadCount]; |
| 55 | |
| 56 | Thread progenitor = new MyThread(); |
| 57 | progenitor.start(); |
| 58 | |
| 59 | // Wait for *all* threads to complete |
| 60 | progenitor.join(); |
| 61 | |
| 62 | for(int i = 0; i<threadCount; i++){ |
| 63 | int checkValue = i+INITIAL_VALUE; |
| 64 | |
| 65 | /* If the remove method is called then the ThreadLocal value will |
| 66 | * be its initial value */ |
| 67 | for(int removeId : removeNode) |
| 68 | if(removeId == i){ |
| 69 | checkValue = INITIAL_VALUE; |
| 70 | break; |
| 71 | } |
| 72 | |
| 73 | for(int removeId : removeAndSet) |
| 74 | if(removeId == i){ |
| 75 | checkValue = REMOVE_SET_VALUE; |
| 76 | break; |
| 77 | } |
| 78 | |
| 79 | if(exceptions[i] != null) |
| 80 | throw(exceptions[i]); |
| 81 | if(x[i] != checkValue) |
| 82 | throw(new Throwable("x[" + i + "] =" + x[i])); |
| 83 | } |
| 84 | } |
| 85 | private static class MyThread extends Thread { |
| 86 | public void run() { |
| 87 | |
| 88 | Thread child = null; |
| 89 | int threadId=0; |
| 90 | try{ |
| 91 | threadId = n.get(); |
| 92 | // Creating child thread... |
| 93 | if (threadId < (threadCount-1+INITIAL_VALUE)) { |
| 94 | child = new MyThread(); |
| 95 | child.start(); |
| 96 | } |
| 97 | |
| 98 | for (int j = 0; j<threadId; j++) |
| 99 | Thread.currentThread().yield(); |
| 100 | |
| 101 | |
| 102 | // To remove the ThreadLocal value... |
| 103 | for(int removeId : removeNode) |
| 104 | if((threadId-INITIAL_VALUE) == removeId){ |
| 105 | n.remove(); |
| 106 | break; |
| 107 | } |
| 108 | |
| 109 | // To remove the ThreadLocal value and set new value ... |
| 110 | for(int removeId : removeAndSet) |
| 111 | if((threadId-INITIAL_VALUE) == removeId){ |
| 112 | n.remove(); |
| 113 | n.set(REMOVE_SET_VALUE); |
| 114 | break; |
| 115 | } |
| 116 | x[threadId-INITIAL_VALUE] = n.get(); |
| 117 | }catch(Throwable ex){ |
| 118 | exceptions[threadId-INITIAL_VALUE] = ex; |
| 119 | } |
| 120 | // Wait for child (if any) |
| 121 | if (child != null) { |
| 122 | try { |
| 123 | child.join(); |
| 124 | } catch(InterruptedException e) { |
| 125 | throw(new RuntimeException("Interrupted")); |
| 126 | } |
| 127 | } |
| 128 | } |
| 129 | } |
| 130 | } |