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
26package sun.nio.ch;
27
28import java.io.*;
29import java.nio.channels.*;
30import java.nio.channels.spi.*;
31
32
33class 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}
62