1 /* 2 * Copyright (c) 2000, 2001, 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 /* @test 25 * @summary Test reading and writing from Pipes 26 */ 27 28 import java.io.*; 29 import java.nio.ByteBuffer; 30 import java.nio.channels.*; 31 import java.nio.channels.spi.SelectorProvider; 32 import java.util.Random; 33 34 35 /** 36 * Testing PipeChannel 37 */ 38 public class PipeChannel { 39 40 private static Random generator = new Random(); 41 42 public static void main(String[] args) throws Exception { 43 for (int x=0; x<100; x++) { 44 SelectorProvider sp = SelectorProvider.provider(); 45 Pipe p = sp.openPipe(); 46 Pipe.SinkChannel sink = p.sink(); 47 Pipe.SourceChannel source = p.source(); 48 49 ByteBuffer outgoingdata = ByteBuffer.allocateDirect(10); 50 byte[] someBytes = new byte[10]; 51 generator.nextBytes(someBytes); 52 outgoingdata.put(someBytes); 53 outgoingdata.flip(); 54 55 int totalWritten = 0; 56 while (totalWritten < 10) { 57 int written = sink.write(outgoingdata); 58 if (written < 0) 59 throw new Exception("Write failed"); 60 totalWritten += written; 61 } 62 63 ByteBuffer incomingdata = ByteBuffer.allocateDirect(10); 64 int totalRead = 0; 65 do { 66 int bytesRead = source.read(incomingdata); 67 if (bytesRead > 0) 68 totalRead += bytesRead; 69 } while(totalRead < 10); 70 71 for(int i=0; i<10; i++) 72 if (outgoingdata.get(i) != incomingdata.get(i)) 73 throw new Exception("Pipe failed"); 74 sink.close(); 75 source.close(); 76 } 77 } 78 }