1 /*

     2  * Copyright 2001 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

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

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25  * @bug 4467968

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

    27  */

    28 

    29 import java.io.IOException;

    30 import java.nio.channels.Selector;

    31 

    32 

    33 public class WakeupSpeed {

    34 

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

    36         int waitTime = 4000;

    37         Selector selector = Selector.open();

    38 

    39         selector.wakeup();

    40 

    41         long t1 = System.currentTimeMillis();

    42         selector.select(waitTime);

    43         long t2 = System.currentTimeMillis();

    44         long totalTime = t2 - t1;

    45 

    46         if (totalTime > waitTime)

    47             throw new RuntimeException("Test failed");

    48     }

    49 

    50 }