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/*
* 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 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]));
}
}
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