1e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera/* 2e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. 3e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * 5e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * This code is free software; you can redistribute it and/or modify it 6e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * under the terms of the GNU General Public License version 2 only, as 7e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * published by the Free Software Foundation. Oracle designates this 8e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * particular file as subject to the "Classpath" exception as provided 9e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * by Oracle in the LICENSE file that accompanied this code. 10e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * 11e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * This code is distributed in the hope that it will be useful, but WITHOUT 12e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * version 2 for more details (a copy is included in the LICENSE file that 15e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * accompanied this code). 16e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * 17e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * You should have received a copy of the GNU General Public License version 18e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * 2 along with this work; if not, write to the Free Software Foundation, 19e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * 21e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * or visit www.oracle.com if you need additional information or have any 23e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera * questions. 24e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera */ 25e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 26e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmerapackage sun.nio.ch; 27e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 28e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmeraimport java.nio.channels.*; 29e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmeraimport java.nio.channels.spi.AsynchronousChannelProvider; 30e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmeraimport java.util.concurrent.ExecutorService; 31e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmeraimport java.util.concurrent.ThreadFactory; 32e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmeraimport java.io.IOException; 33e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 34e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmerapublic class LinuxAsynchronousChannelProvider 35e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera extends AsynchronousChannelProvider 36e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera{ 37e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera private static volatile EPollPort defaultPort; 38e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 39e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera private EPollPort defaultEventPort() throws IOException { 40e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera if (defaultPort == null) { 41e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera synchronized (LinuxAsynchronousChannelProvider.class) { 42e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera if (defaultPort == null) { 43e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera defaultPort = new EPollPort(this, ThreadPool.getDefault()).start(); 44e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 45e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 46e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 47e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return defaultPort; 48e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 49e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 50e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera public LinuxAsynchronousChannelProvider() { 51e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 52e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 53e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera @Override 54e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera public AsynchronousChannelGroup openAsynchronousChannelGroup(int nThreads, ThreadFactory factory) 55e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera throws IOException 56e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera { 57e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return new EPollPort(this, ThreadPool.create(nThreads, factory)).start(); 58e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 59e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 60e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera @Override 61e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera public AsynchronousChannelGroup openAsynchronousChannelGroup(ExecutorService executor, int initialSize) 62e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera throws IOException 63e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera { 64e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return new EPollPort(this, ThreadPool.wrap(executor, initialSize)).start(); 65e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 66e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 67e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera private Port toPort(AsynchronousChannelGroup group) throws IOException { 68e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera if (group == null) { 69e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return defaultEventPort(); 70e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } else { 71e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera if (!(group instanceof EPollPort)) 72e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera throw new IllegalChannelGroupException(); 73e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return (Port)group; 74e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 75e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 76e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 77e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera @Override 78e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera public AsynchronousServerSocketChannel openAsynchronousServerSocketChannel(AsynchronousChannelGroup group) 79e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera throws IOException 80e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera { 81e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return new UnixAsynchronousServerSocketChannelImpl(toPort(group)); 82e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 83e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera 84e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera @Override 85e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera public AsynchronousSocketChannel openAsynchronousSocketChannel(AsynchronousChannelGroup group) 86e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera throws IOException 87e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera { 88e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera return new UnixAsynchronousSocketChannelImpl(toPort(group)); 89e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera } 90e318a0eaa02b186f9f135016e95a6282fe9a83cbShubham Ajmera} 91