| /* |
| * Copyright (c) 1999, 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 InheritableThreadLocal |
| * @author Josh Bloch |
| */ |
| |
| public class Basic { |
| static InheritableThreadLocal n = new InheritableThreadLocal() { |
| protected Object initialValue() { |
| return new Integer(0); |
| } |
| |
| protected Object childValue(Object parentValue) { |
| return new Integer(((Integer)parentValue).intValue() + 1); |
| } |
| }; |
| |
| static int threadCount = 100; |
| static int x[]; |
| |
| public static void main(String args[]) throws Exception { |
| x = new int[threadCount]; |
| Thread progenitor = new MyThread(); |
| progenitor.start(); |
| |
| // Wait for *all* threads to complete |
| progenitor.join(); |
| |
| // Check results |
| for(int i=0; i<threadCount; i++) |
| if (x[i] != i) |
| throw(new Exception("x[" + i + "] =" + x[i])); |
| } |
| |
| private static class MyThread extends Thread { |
| public void run() { |
| Thread child = null; |
| if (((Integer)(n.get())).intValue() < threadCount-1) { |
| child = new MyThread(); |
| child.start(); |
| } |
| Thread.currentThread().yield(); |
| |
| int threadId = ((Integer)(n.get())).intValue(); |
| for (int j=0; j<threadId; j++) { |
| x[threadId]++; |
| Thread.currentThread().yield(); |
| } |
| |
| // Wait for child (if any) |
| if (child != null) { |
| try { |
| child.join(); |
| } catch(InterruptedException e) { |
| throw(new RuntimeException("Interrupted")); |
| } |
| } |
| } |
| } |
| } |