1 /* 2 * Copyright (c) 2008, 2009, 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.nio.channels.*; 29 import java.nio.channels.spi.AsynchronousChannelProvider; 30 import java.util.concurrent.ExecutorService; 31 import java.util.concurrent.ThreadFactory; 32 import java.net.ProtocolFamily; 33 import java.io.IOException; 34 35 public class SolarisAsynchronousChannelProvider 36 extends AsynchronousChannelProvider 37 { 38 private static volatile SolarisEventPort defaultEventPort; 39 40 private SolarisEventPort defaultEventPort() throws IOException { 41 if (defaultEventPort == null) { 42 synchronized (SolarisAsynchronousChannelProvider.class) { 43 if (defaultEventPort == null) { 44 defaultEventPort = 45 new SolarisEventPort(this, ThreadPool.getDefault()).start(); 46 } 47 } 48 } 49 return defaultEventPort; 50 } 51 52 public SolarisAsynchronousChannelProvider() { 53 } 54 55 @Override 56 public AsynchronousChannelGroup openAsynchronousChannelGroup(int nThreads, ThreadFactory factory) 57 throws IOException 58 { 59 return new SolarisEventPort(this, ThreadPool.create(nThreads, factory)).start(); 60 } 61 62 @Override 63 public AsynchronousChannelGroup openAsynchronousChannelGroup(ExecutorService executor, int initialSize) 64 throws IOException 65 { 66 return new SolarisEventPort(this, ThreadPool.wrap(executor, initialSize)).start(); 67 } 68 69 private SolarisEventPort toEventPort(AsynchronousChannelGroup group) 70 throws IOException 71 { 72 if (group == null) { 73 return defaultEventPort(); 74 } else { 75 if (!(group instanceof SolarisEventPort)) 76 throw new IllegalChannelGroupException(); 77 return (SolarisEventPort)group; 78 } 79 } 80 81 @Override 82 public AsynchronousServerSocketChannel openAsynchronousServerSocketChannel(AsynchronousChannelGroup group) 83 throws IOException 84 { 85 return new UnixAsynchronousServerSocketChannelImpl(toEventPort(group)); 86 } 87 88 @Override 89 public AsynchronousSocketChannel openAsynchronousSocketChannel(AsynchronousChannelGroup group) 90 throws IOException 91 { 92 return new UnixAsynchronousSocketChannelImpl(toEventPort(group)); 93 } 94 95 @Override 96 public AsynchronousDatagramChannel openAsynchronousDatagramChannel(ProtocolFamily family, 97 AsynchronousChannelGroup group) 98 throws IOException 99 { 100 return new SimpleAsynchronousDatagramChannelImpl(family, toEventPort(group)); 101 } 102 }