J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 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 4526754 |
| 26 | * @summary Test Pipe scattering reads |
| 27 | */ |
| 28 | |
| 29 | import java.nio.channels.*; |
| 30 | import java.nio.*; |
| 31 | import java.util.Random; |
| 32 | |
| 33 | public class ScatteringRead { |
| 34 | |
| 35 | private static Random generator = new Random(); |
| 36 | |
| 37 | public static void main(String[] args) throws Exception { |
| 38 | scScatter(); |
| 39 | } |
| 40 | |
| 41 | private static void scScatter() throws Exception { |
| 42 | Pipe p = Pipe.open(); |
| 43 | Pipe.SinkChannel sink = p.sink(); |
| 44 | Pipe.SourceChannel source = p.source(); |
| 45 | sink.configureBlocking(false); |
| 46 | |
| 47 | ByteBuffer outgoingdata = ByteBuffer.allocateDirect(30); |
| 48 | byte[] someBytes = new byte[30]; |
| 49 | generator.nextBytes(someBytes); |
| 50 | outgoingdata.put(someBytes); |
| 51 | outgoingdata.flip(); |
| 52 | |
| 53 | int totalWritten = 0; |
| 54 | while (totalWritten < 30) { |
| 55 | int written = sink.write(outgoingdata); |
| 56 | if (written < 0) |
| 57 | throw new Exception("Write failed"); |
| 58 | totalWritten += written; |
| 59 | } |
| 60 | |
| 61 | ByteBuffer[] bufs = new ByteBuffer[3]; |
| 62 | for(int i=0; i<3; i++) |
| 63 | bufs[i] = ByteBuffer.allocateDirect(10); |
| 64 | long numBytesRead = source.read(bufs); |
| 65 | if (numBytesRead < 30) |
| 66 | throw new Exception("Pipe test failed"); |
| 67 | sink.close(); |
| 68 | source.close(); |
| 69 | } |
| 70 | |
| 71 | } |