1 /*
   2  * Copyright (c) 2000, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.ch;
  27 
  28 import java.io.*;
  29 import java.nio.channels.*;
  30 import java.nio.channels.spi.*;
  31 
  32 
  33 class PipeImpl
  34     extends Pipe
  35 {
  36 
  37     // Source and sink channels
  38     private final SourceChannel source;
  39     private final SinkChannel sink;
  40 
  41     PipeImpl(SelectorProvider sp) {
  42         long pipeFds = IOUtil.makePipe(true);
  43         int readFd = (int) (pipeFds >>> 32);
  44         int writeFd = (int) pipeFds;
  45         FileDescriptor sourcefd = new FileDescriptor();
  46         IOUtil.setfdVal(sourcefd, readFd);
  47         source = new SourceChannelImpl(sp, sourcefd);
  48         FileDescriptor sinkfd = new FileDescriptor();
  49         IOUtil.setfdVal(sinkfd, writeFd);
  50         sink = new SinkChannelImpl(sp, sinkfd);
  51     }
  52 
  53     public SourceChannel source() {
  54         return source;
  55     }
  56 
  57     public SinkChannel sink() {
  58         return sink;
  59     }
  60 
  61 }