67 lines
2.2 KiB
Java
67 lines
2.2 KiB
Java
/*
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* Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Basic functional test of ThreadLocal
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* @author Josh Bloch
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*/
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public class Basic {
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static ThreadLocal n = new ThreadLocal() {
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int i = 0;
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protected synchronized Object initialValue() {
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return new Integer(i++);
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}
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};
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public static void main(String args[]) throws Exception {
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int threadCount = 100;
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Thread th[] = new Thread[threadCount];
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final int x[] = new int[threadCount];
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// Start the threads
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for(int i=0; i<threadCount; i++) {
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th[i] = new Thread() {
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public void run() {
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int threadId = ((Integer)(n.get())).intValue();
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for (int j=0; j<threadId; j++) {
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x[threadId]++;
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Thread.currentThread().yield();
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}
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}
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};
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th[i].start();
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}
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// Wait for the threads to finish
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for(int i=0; i<threadCount; i++)
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th[i].join();
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// Check results
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for(int i=0; i<threadCount; i++)
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if (x[i] != i)
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throw(new Exception("x[" + i + "] =" + x[i]));
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}
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}
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