/*

 * Copyright (c) 2001, 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

 * @bug 4467968

 * @summary Tests wether wakeup makes the next select() call return immediately

 */

import java.io.IOException;

import java.nio.channels.Selector;

public class WakeupSpeed {

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

        int waitTime = 4000;

        Selector selector = Selector.open();

        try {

            selector.wakeup();

            long t1 = System.currentTimeMillis();

            selector.select(waitTime);

            long t2 = System.currentTimeMillis();

            long totalTime = t2 - t1;

            if (totalTime > waitTime)

                throw new RuntimeException("Test failed");

        } finally {

            selector.close();

        }

    }

}