1 /*

     2  * Copyright 1998 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 /*

    25  * @test

    26  * @bug 1267045

    27  * @summary Make sure write will fail if reading

    28  *          end thread is dead.

    29  *

    30  */

    31 

    32 

    33 import java.io.*;

    34 

    35 public class DeadReader {

    36 

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

    38         PipedOutputStream os = new PipedOutputStream();

    39         PipedInputStream is = new PipedInputStream();

    40         is.connect(os);

    41 

    42         // create reader thread

    43         LazyReader lr = new LazyReader(is);

    44 

    45         os.write(new byte[1000]);

    46 

    47         lr.start();

    48         while (lr.isAlive()) {

    49             Thread.sleep(100);

    50         }

    51 

    52         try{

    53             os.write(27);

    54             throw new Exception

    55                 ("Test failed: shouldn't be able to write");

    56         } catch (IOException e) {

    57             // test passed

    58         }

    59     }

    60 }

    61 

    62 class LazyReader extends Thread {

    63     private PipedInputStream snk;

    64     private int delay;

    65 

    66     public LazyReader(PipedInputStream snk) {

    67         this.snk = snk;

    68     }

    69 

    70     public void run() {

    71         try {

    72             snk.read();

    73         } catch (Exception e) {

    74             System.err.println("Test failed: unexpected exception");

    75         }

    76         return;

    77     }

    78 }