/*

 * Copyright 1999 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 * @test

 * @summary Basic functional test of ThreadLocal

 * @author Josh Bloch

 */

public class Basic {

    static ThreadLocal n = new ThreadLocal() {

        int i = 0;

        protected synchronized Object initialValue() {

            return new Integer(i++);

        }

    };

    public static void main(String args[]) throws Exception {

        int threadCount = 100;

        Thread th[] = new Thread[threadCount];

        final int x[] = new int[threadCount];

        // Start the threads

        for(int i=0; i<threadCount; i++) {

            th[i] = new Thread() {

                public void run() {

                    int threadId = ((Integer)(n.get())).intValue();

                    for (int j=0; j<threadId; j++) {

                        x[threadId]++;

                        Thread.currentThread().yield();

                    }

                }

            };

            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++)

            if (x[i] != i)

                throw(new Exception("x[" + i + "] =" + x[i]));

    }

}