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