| /* |
| * Copyright (c) 2004, Oracle and/or its affiliates. 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 |
| * @summary Basic functional test of remove method for ThreadLocal |
| * @author Seetharama Avadhanam |
| */ |
| |
| public class TLRemoveTest { |
| private static final int INITIAL_VALUE = 101; |
| private static final int REMOVE_SET_VALUE = 102; |
| |
| static ThreadLocal<Integer> n = new ThreadLocal<Integer>() { |
| protected synchronized Integer initialValue() { |
| return INITIAL_VALUE; |
| } |
| }; |
| |
| public static void main(String args[]) throws Throwable { |
| int threadCount = 100; |
| final int[] removeNode = {10,20,45,38}; |
| // ThreadLocal values will be removed for these threads. |
| final int[] removeAndSet = {12,34,10}; |
| // ThreadLocal values will be removed and sets new values.. |
| |
| Thread th[] = new Thread[threadCount]; |
| final int x[] = new int[threadCount]; |
| final Throwable exceptions[] = new Throwable[threadCount]; |
| |
| for(int i = 0; i<threadCount; i++) { |
| final int threadId = i; |
| th[i] = new Thread() { |
| public void run() { |
| try{ |
| n.set(threadId); // Sets threadId as threadlocal value... |
| for (int j = 0; j<threadId; j++) |
| Thread.currentThread().yield(); |
| |
| // To remove the ThreadLocal .... |
| for(int removeId : removeNode) |
| if(threadId == removeId){ |
| n.remove(); // Removes ThreadLocal values.. |
| break; |
| } |
| |
| // To remove the ThreadLocal value and set new value ... |
| for(int removeId : removeAndSet) |
| if(threadId == removeId){ |
| n.remove(); // Removes the ThreadLocal Value... |
| n.set(REMOVE_SET_VALUE); /* Setting new Values to |
| ThreadLocal */ |
| break; |
| } |
| /* Storing the threadlocal values in 'x' |
| ...so that it can be used for checking results... */ |
| x[threadId] = n.get(); |
| } |
| catch(Throwable ex){ |
| exceptions[threadId] = ex; |
| } |
| } |
| }; |
| th[i].start(); |
| } |
| |
| // Wait for the threads to finish |
| for(int i = 0; i<threadCount; i++) |
| th[i].join(); |
| |
| // Check results |
| for(int i = 0; i<threadCount; i++){ |
| int checkValue = i; |
| |
| /* If the remove method is called then the ThreadLocal value will |
| * be its initial value */ |
| for(int removeId : removeNode) |
| if(removeId == i){ |
| checkValue = INITIAL_VALUE; |
| break; |
| } |
| |
| for(int removeId : removeAndSet) |
| if(removeId == i){ |
| checkValue = REMOVE_SET_VALUE; |
| break; |
| } |
| |
| if(exceptions[i] != null) |
| throw(exceptions[i]); |
| if(x[i] != checkValue) |
| throw(new Throwable("x[" + i + "] =" + x[i])); |
| } |
| } |
| } |