1 /* 2 * Copyright (c) 2001, 2007, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * 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 { main(String [] args)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 printByteBuffer(ByteBuffer bb)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 } 52