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| 1 | +/* |
| 2 | + * Copyright (c) 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 | + |
| 26 | +package com.oracle.net; |
| 27 | + |
| 28 | +import java.net.Socket; |
| 29 | +import java.net.ServerSocket; |
| 30 | +import java.net.SocketImpl; |
| 31 | +import java.net.SocketImplFactory; |
| 32 | +import java.net.SocketException; |
| 33 | +import java.nio.channels.SocketChannel; |
| 34 | +import java.nio.channels.ServerSocketChannel; |
| 35 | +import java.io.IOException; |
| 36 | +import java.io.FileDescriptor; |
| 37 | +import java.security.AccessController; |
| 38 | +import java.security.PrivilegedAction; |
| 39 | +import java.lang.reflect.Constructor; |
| 40 | +import java.lang.reflect.AccessibleObject; |
| 41 | +import java.lang.reflect.InvocationTargetException; |
| 42 | + |
| 43 | +import sun.net.sdp.SdpSupport; |
| 44 | + |
| 45 | +/** |
| 46 | + * This class consists exclusively of static methods that Sockets or Channels to |
| 47 | + * sockets that support the InfiniBand Sockets Direct Protocol (SDP). |
| 48 | + */ |
| 49 | + |
| 50 | +public final class Sdp { |
| 51 | + private Sdp() { } |
| 52 | + |
| 53 | + /** |
| 54 | + * The package-privage ServerSocket(SocketImpl) constructor |
| 55 | + */ |
| 56 | + private static final Constructor<ServerSocket> serverSocketCtor; |
| 57 | + static { |
| 58 | + try { |
| 59 | + serverSocketCtor = (Constructor<ServerSocket>) |
| 60 | + ServerSocket.class.getDeclaredConstructor(SocketImpl.class); |
| 61 | + setAccessible(serverSocketCtor); |
| 62 | + } catch (NoSuchMethodException e) { |
| 63 | + throw new AssertionError(e); |
| 64 | + } |
| 65 | + } |
| 66 | + |
| 67 | + /** |
| 68 | + * The package-private SdpSocketImpl() constructor |
| 69 | + */ |
| 70 | + private static final Constructor<SocketImpl> socketImplCtor; |
| 71 | + static { |
| 72 | + try { |
| 73 | + Class<?> cl = Class.forName("java.net.SdpSocketImpl", true, null); |
| 74 | + socketImplCtor = (Constructor<SocketImpl>)cl.getDeclaredConstructor(); |
| 75 | + setAccessible(socketImplCtor); |
| 76 | + } catch (ClassNotFoundException e) { |
| 77 | + throw new AssertionError(e); |
| 78 | + } catch (NoSuchMethodException e) { |
| 79 | + throw new AssertionError(e); |
| 80 | + } |
| 81 | + } |
| 82 | + |
| 83 | + private static void setAccessible(final AccessibleObject o) { |
| 84 | + AccessController.doPrivileged(new PrivilegedAction<Void>() { |
| 85 | + public Void run() { |
| 86 | + o.setAccessible(true); |
| 87 | + return null; |
| 88 | + } |
| 89 | + }); |
| 90 | + } |
| 91 | + |
| 92 | + /** |
| 93 | + * SDP enabled Socket. |
| 94 | + */ |
| 95 | + private static class SdpSocket extends Socket { |
| 96 | + SdpSocket(SocketImpl impl) throws SocketException { |
| 97 | + super(impl); |
| 98 | + } |
| 99 | + } |
| 100 | + |
| 101 | + /** |
| 102 | + * Creates a SDP enabled SocketImpl |
| 103 | + */ |
| 104 | + private static SocketImpl createSocketImpl() { |
| 105 | + try { |
| 106 | + return socketImplCtor.newInstance(); |
| 107 | + } catch (InstantiationException x) { |
| 108 | + throw new AssertionError(x); |
| 109 | + } catch (IllegalAccessException x) { |
| 110 | + throw new AssertionError(x); |
| 111 | + } catch (InvocationTargetException x) { |
| 112 | + throw new AssertionError(x); |
| 113 | + } |
| 114 | + } |
| 115 | + |
| 116 | + /** |
| 117 | + * Creates an unconnected and unbound SDP socket. The {@code Socket} is |
| 118 | + * associated with a {@link java.net.SocketImpl} of the system-default type. |
| 119 | + * |
| 120 | + * @return a new Socket |
| 121 | + * |
| 122 | + * @throws UnsupportedOperationException |
| 123 | + * If SDP is not supported |
| 124 | + * @throws IOException |
| 125 | + * If an I/O error occurs |
| 126 | + */ |
| 127 | + public static Socket openSocket() throws IOException { |
| 128 | + SocketImpl impl = createSocketImpl(); |
| 129 | + return new SdpSocket(impl); |
| 130 | + } |
| 131 | + |
| 132 | + /** |
| 133 | + * Creates an unbound SDP server socket. The {@code ServerSocket} is |
| 134 | + * associated with a {@link java.net.SocketImpl} of the system-default type. |
| 135 | + * |
| 136 | + * @return a new ServerSocket |
| 137 | + * |
| 138 | + * @throws UnsupportedOperationException |
| 139 | + * If SDP is not supported |
| 140 | + * @throws IOException |
| 141 | + * If an I/O error occurs |
| 142 | + */ |
| 143 | + public static ServerSocket openServerSocket() throws IOException { |
| 144 | + // create ServerSocket via package-private constructor |
| 145 | + SocketImpl impl = createSocketImpl(); |
| 146 | + try { |
| 147 | + return serverSocketCtor.newInstance(impl); |
| 148 | + } catch (IllegalAccessException x) { |
| 149 | + throw new AssertionError(x); |
| 150 | + } catch (InstantiationException x) { |
| 151 | + throw new AssertionError(x); |
| 152 | + } catch (InvocationTargetException x) { |
| 153 | + Throwable cause = x.getCause(); |
| 154 | + if (cause instanceof IOException) |
| 155 | + throw (IOException)cause; |
| 156 | + if (cause instanceof RuntimeException) |
| 157 | + throw (RuntimeException)cause; |
| 158 | + throw new RuntimeException(x); |
| 159 | + } |
| 160 | + } |
| 161 | + |
| 162 | + /** |
| 163 | + * Opens a socket channel to a SDP socket. |
| 164 | + * |
| 165 | + * <p> The channel will be associated with the system-wide default |
| 166 | + * {@link java.nio.channels.spi.SelectorProvider SelectorProvider}. |
| 167 | + * |
| 168 | + * @return a new SocketChannel |
| 169 | + * |
| 170 | + * @throws UnsupportedOperationException |
| 171 | + * If SDP is not supported or not supported by the default selector |
| 172 | + * provider |
| 173 | + * @throws IOException |
| 174 | + * If an I/O error occurs. |
| 175 | + */ |
| 176 | + public static SocketChannel openSocketChannel() throws IOException { |
| 177 | + FileDescriptor fd = SdpSupport.createSocket(); |
| 178 | + return sun.nio.ch.Secrets.newSocketChannel(fd); |
| 179 | + } |
| 180 | + |
| 181 | + /** |
| 182 | + * Opens a socket channel to a SDP socket. |
| 183 | + * |
| 184 | + * <p> The channel will be associated with the system-wide default |
| 185 | + * {@link java.nio.channels.spi.SelectorProvider SelectorProvider}. |
| 186 | + * |
| 187 | + * @return a new ServerSocketChannel |
| 188 | + * |
| 189 | + * @throws UnsupportedOperationException |
| 190 | + * If SDP is not supported or not supported by the default selector |
| 191 | + * provider |
| 192 | + * @throws IOException |
| 193 | + * If an I/O error occurs |
| 194 | + */ |
| 195 | + public static ServerSocketChannel openServerSocketChannel() |
| 196 | + throws IOException |
| 197 | + { |
| 198 | + FileDescriptor fd = SdpSupport.createSocket(); |
| 199 | + return sun.nio.ch.Secrets.newServerSocketChannel(fd); |
| 200 | + } |
| 201 | +} |