1 /* 2 * Copyright (c) 2002, 2010, 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 selection of ready pipe 26 * @key randomness 27 */ 28 29 import java.io.*; 30 import java.nio.ByteBuffer; 31 import java.nio.channels.*; 32 import java.nio.channels.spi.SelectorProvider; 33 import java.util.Random; 34 35 /** 36 * Testing PipeChannel 37 */ 38 public class SelectPipe { 39 40 private static Random generator = new Random(); 41 42 public static void main(String[] args) throws Exception { 43 44 SelectorProvider sp = SelectorProvider.provider(); 45 Selector selector = Selector.open(); 46 Pipe p = sp.openPipe(); 47 Pipe.SinkChannel sink = p.sink(); 48 Pipe.SourceChannel source = p.source(); 49 50 source.configureBlocking(false); 51 sink.configureBlocking(false); 52 53 SelectionKey readkey = source.register(selector, SelectionKey.OP_READ); 54 SelectionKey writekey = sink.register(selector, SelectionKey.OP_WRITE); 55 56 ByteBuffer outgoingdata = ByteBuffer.allocateDirect(10); 57 byte[] someBytes = new byte[10]; 58 generator.nextBytes(someBytes); 59 outgoingdata.put(someBytes); 60 outgoingdata.flip(); 61 62 int totalWritten = 0; 63 while (totalWritten < 10) { 64 int written = sink.write(outgoingdata); 65 if (written < 0) 66 throw new Exception("Write failed"); 67 totalWritten += written; 68 } 69 70 if (selector.select(1000) == 0) { 71 throw new Exception("test failed"); 72 } 73 74 ByteBuffer incomingdata = ByteBuffer.allocateDirect(10); 75 int totalRead = 0; 76 do { 77 int bytesRead = source.read(incomingdata); 78 if (bytesRead > 0) 79 totalRead += bytesRead; 80 } while(totalRead < 10); 81 82 sink.close(); 83 source.close(); 84 selector.close(); 85 86 for(int i=0; i<10; i++) 87 if (outgoingdata.get(i) != incomingdata.get(i)) 88 throw new Exception("Pipe failed"); 89 } 90 }