| /* |
| * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * @bug 4526754 |
| * @summary Test Pipe scattering reads |
| * @key randomness |
| */ |
| |
| import java.nio.channels.*; |
| import java.nio.*; |
| import java.util.Random; |
| |
| public class ScatteringRead { |
| |
| private static Random generator = new Random(); |
| |
| public static void main(String[] args) throws Exception { |
| scScatter(); |
| } |
| |
| private static void scScatter() throws Exception { |
| Pipe p = Pipe.open(); |
| Pipe.SinkChannel sink = p.sink(); |
| Pipe.SourceChannel source = p.source(); |
| sink.configureBlocking(false); |
| |
| ByteBuffer outgoingdata = ByteBuffer.allocateDirect(30); |
| byte[] someBytes = new byte[30]; |
| generator.nextBytes(someBytes); |
| outgoingdata.put(someBytes); |
| outgoingdata.flip(); |
| |
| int totalWritten = 0; |
| while (totalWritten < 30) { |
| int written = sink.write(outgoingdata); |
| if (written < 0) |
| throw new Exception("Write failed"); |
| totalWritten += written; |
| } |
| |
| ByteBuffer[] bufs = new ByteBuffer[3]; |
| for(int i=0; i<3; i++) |
| bufs[i] = ByteBuffer.allocateDirect(10); |
| long numBytesRead = source.read(bufs); |
| if (numBytesRead < 30) |
| throw new Exception("Pipe test failed"); |
| sink.close(); |
| source.close(); |
| } |
| |
| } |