1 /* 2 * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012 SAP AG. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 package sun.nio.ch; 28 29 import java.nio.channels.*; 30 import java.nio.channels.spi.AsynchronousChannelProvider; 31 import java.util.concurrent.ExecutorService; 32 import java.util.concurrent.ThreadFactory; 33 import java.io.IOException; 34 35 public class AixAsynchronousChannelProvider 36 extends AsynchronousChannelProvider 37 { 38 private static volatile AixPollPort defaultPort; 39 40 private AixPollPort defaultEventPort() throws IOException { 41 if (defaultPort == null) { 42 synchronized (AixAsynchronousChannelProvider.class) { 43 if (defaultPort == null) { 44 defaultPort = new AixPollPort(this, ThreadPool.getDefault()).start(); 45 } 46 } 47 } 48 return defaultPort; 49 } 50 51 public AixAsynchronousChannelProvider() { 52 } 53 54 @Override 55 public AsynchronousChannelGroup openAsynchronousChannelGroup(int nThreads, ThreadFactory factory) 56 throws IOException 57 { 58 return new AixPollPort(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 AixPollPort(this, ThreadPool.wrap(executor, initialSize)).start(); 66 } 67 68 private Port toPort(AsynchronousChannelGroup group) throws IOException { 69 if (group == null) { 70 return defaultEventPort(); 71 } else { 72 if (!(group instanceof AixPollPort)) 73 throw new IllegalChannelGroupException(); 74 return (Port)group; 75 } 76 } 77 78 @Override 79 public AsynchronousServerSocketChannel openAsynchronousServerSocketChannel(AsynchronousChannelGroup group) 80 throws IOException 81 { 82 return new UnixAsynchronousServerSocketChannelImpl(toPort(group)); 83 } 84 85 @Override 86 public AsynchronousSocketChannel openAsynchronousSocketChannel(AsynchronousChannelGroup group) 87 throws IOException 88 { 89 return new UnixAsynchronousSocketChannelImpl(toPort(group)); 90 } 91 }