1 /*

     2  * Copyright 2001-2007 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 4490253 6535542

    27  * @summary Verify that newly allocated direct buffers are initialized.

    28  */

    29 

    30 import java.nio.ByteBuffer;

    31 

    32 public class AllocateDirectInit {

    33     public static void main(String [] args){

    34         for (int i = 0; i < 1024; i++) {

    35             ByteBuffer bb = ByteBuffer.allocateDirect(1024);

    36 //          printByteBuffer(bb);

    37             for (bb.position(0); bb.position() < bb.limit(); ) {

    38                 if ((bb.get() & 0xff) != 0)

    39                     throw new RuntimeException("uninitialized buffer, position = "

    40                                                + bb.position());

    41             }

    42         }

    43     }

    44 

    45     private static void printByteBuffer(ByteBuffer bb) {

    46         System.out.print("byte [");

    47         for (bb.position(0); bb.position() < bb.limit(); )

    48             System.out.print(" " + Integer.toHexString(bb.get() & 0xff));

    49         System.out.println(" ]");

    50     }

    51 }