1/*
2 * Copyright (c) 2008, 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.nio.channels.*;
29import java.nio.channels.spi.AsynchronousChannelProvider;
30import java.util.concurrent.ExecutorService;
31import java.util.concurrent.ThreadFactory;
32import java.io.IOException;
33
34public class SolarisAsynchronousChannelProvider
35    extends AsynchronousChannelProvider
36{
37    private static volatile SolarisEventPort defaultEventPort;
38
39    private SolarisEventPort defaultEventPort() throws IOException {
40        if (defaultEventPort == null) {
41            synchronized (SolarisAsynchronousChannelProvider.class) {
42                if (defaultEventPort == null) {
43                    defaultEventPort =
44                        new SolarisEventPort(this, ThreadPool.getDefault()).start();
45                }
46            }
47        }
48        return defaultEventPort;
49    }
50
51    public SolarisAsynchronousChannelProvider() {
52    }
53
54    @Override
55    public AsynchronousChannelGroup openAsynchronousChannelGroup(int nThreads, ThreadFactory factory)
56        throws IOException
57    {
58        return new SolarisEventPort(this, ThreadPool.create(nThreads, factory)).start();
59    }
60
61    @Override
62    public AsynchronousChannelGroup openAsynchronousChannelGroup(ExecutorService executor, int initialSize)
63        throws IOException
64    {
65        return new SolarisEventPort(this, ThreadPool.wrap(executor, initialSize)).start();
66    }
67
68    private SolarisEventPort toEventPort(AsynchronousChannelGroup group)
69        throws IOException
70    {
71        if (group == null) {
72            return defaultEventPort();
73        } else {
74            if (!(group instanceof SolarisEventPort))
75                throw new IllegalChannelGroupException();
76            return (SolarisEventPort)group;
77        }
78    }
79
80    @Override
81    public AsynchronousServerSocketChannel openAsynchronousServerSocketChannel(AsynchronousChannelGroup group)
82        throws IOException
83    {
84        return new UnixAsynchronousServerSocketChannelImpl(toEventPort(group));
85    }
86
87    @Override
88    public AsynchronousSocketChannel openAsynchronousSocketChannel(AsynchronousChannelGroup group)
89        throws IOException
90    {
91        return new UnixAsynchronousSocketChannelImpl(toEventPort(group));
92    }
93}
94