author | ohair |
Tue, 25 May 2010 15:58:33 -0700 | |
changeset 5506 | 202f599c92aa |
parent 3632 | 399359a027de |
child 9679 | d98ae8bc45fc |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package sun.nio.ch; |
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import java.nio.channels.*; |
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import java.net.SocketAddress; |
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import java.net.SocketOption; |
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import java.net.StandardSocketOption; |
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import java.net.InetSocketAddress; |
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import java.io.FileDescriptor; |
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import java.io.IOException; |
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import java.util.Set; |
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import java.util.HashSet; |
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import java.util.Collections; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.locks.ReadWriteLock; |
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import java.util.concurrent.locks.ReentrantReadWriteLock; |
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import sun.net.NetHooks; |
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/** |
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* Base implementation of AsynchronousServerSocketChannel. |
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*/ |
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abstract class AsynchronousServerSocketChannelImpl |
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extends AsynchronousServerSocketChannel |
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implements Cancellable, Groupable |
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{ |
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protected final FileDescriptor fd; |
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// the local address to which the channel's socket is bound |
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protected volatile SocketAddress localAddress = null; |
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// need this lock to set local address |
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private final Object stateLock = new Object(); |
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// close support |
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private ReadWriteLock closeLock = new ReentrantReadWriteLock(); |
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private volatile boolean open = true; |
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// set true when accept operation is cancelled |
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private volatile boolean acceptKilled; |
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AsynchronousServerSocketChannelImpl(AsynchronousChannelGroupImpl group) { |
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super(group.provider()); |
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this.fd = Net.serverSocket(true); |
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} |
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@Override |
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public final boolean isOpen() { |
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return open; |
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} |
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/** |
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* Marks beginning of access to file descriptor/handle |
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*/ |
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final void begin() throws IOException { |
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closeLock.readLock().lock(); |
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if (!isOpen()) |
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throw new ClosedChannelException(); |
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} |
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/** |
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* Marks end of access to file descriptor/handle |
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*/ |
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final void end() { |
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closeLock.readLock().unlock(); |
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} |
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/** |
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* Invoked to close file descriptor/handle. |
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*/ |
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abstract void implClose() throws IOException; |
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@Override |
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public final void close() throws IOException { |
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// synchronize with any threads using file descriptor/handle |
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closeLock.writeLock().lock(); |
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try { |
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if (!open) |
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return; // already closed |
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open = false; |
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} finally { |
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closeLock.writeLock().unlock(); |
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} |
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implClose(); |
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} |
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/** |
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* Invoked by accept to accept connection |
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*/ |
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abstract Future<AsynchronousSocketChannel> |
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implAccept(Object attachment, |
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CompletionHandler<AsynchronousSocketChannel,Object> handler); |
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@Override |
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public final Future<AsynchronousSocketChannel> accept() { |
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return implAccept(null, null); |
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} |
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124 |
|
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125 |
@Override |
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126 |
@SuppressWarnings("unchecked") |
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127 |
public final <A> void accept(A attachment, |
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CompletionHandler<AsynchronousSocketChannel,? super A> handler) |
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129 |
{ |
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if (handler == null) |
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throw new NullPointerException("'handler' is null"); |
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implAccept(attachment, (CompletionHandler<AsynchronousSocketChannel,Object>)handler); |
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} |
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134 |
|
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final boolean isAcceptKilled() { |
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return acceptKilled; |
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137 |
} |
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138 |
|
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139 |
@Override |
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140 |
public final void onCancel(PendingFuture<?,?> task) { |
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acceptKilled = true; |
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142 |
} |
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143 |
|
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144 |
@Override |
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145 |
public final AsynchronousServerSocketChannel bind(SocketAddress local, int backlog) |
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146 |
throws IOException |
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147 |
{ |
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148 |
InetSocketAddress isa = (local == null) ? new InetSocketAddress(0) : |
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149 |
Net.checkAddress(local); |
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150 |
SecurityManager sm = System.getSecurityManager(); |
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151 |
if (sm != null) |
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152 |
sm.checkListen(isa.getPort()); |
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153 |
|
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|
154 |
try { |
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|
155 |
begin(); |
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156 |
synchronized (stateLock) { |
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157 |
if (localAddress != null) |
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158 |
throw new AlreadyBoundException(); |
2446 | 159 |
NetHooks.beforeTcpBind(fd, isa.getAddress(), isa.getPort()); |
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160 |
Net.bind(fd, isa.getAddress(), isa.getPort()); |
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161 |
Net.listen(fd, backlog < 1 ? 50 : backlog); |
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|
162 |
localAddress = Net.localAddress(fd); |
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|
163 |
} |
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|
164 |
} finally { |
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|
165 |
end(); |
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|
166 |
} |
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|
167 |
return this; |
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|
168 |
} |
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|
169 |
|
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|
170 |
@Override |
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|
171 |
public final SocketAddress getLocalAddress() throws IOException { |
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|
172 |
if (!isOpen()) |
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|
173 |
throw new ClosedChannelException(); |
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|
174 |
return localAddress; |
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|
175 |
} |
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|
176 |
|
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|
177 |
@Override |
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|
178 |
public final <T> AsynchronousServerSocketChannel setOption(SocketOption<T> name, |
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|
179 |
T value) |
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|
180 |
throws IOException |
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|
181 |
{ |
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|
182 |
if (name == null) |
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|
183 |
throw new NullPointerException(); |
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|
184 |
if (!supportedOptions().contains(name)) |
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|
185 |
throw new UnsupportedOperationException("'" + name + "' not supported"); |
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|
186 |
|
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|
187 |
try { |
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|
188 |
begin(); |
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|
189 |
Net.setSocketOption(fd, Net.UNSPEC, name, value); |
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|
190 |
return this; |
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|
191 |
} finally { |
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|
192 |
end(); |
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|
193 |
} |
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parents:
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changeset
|
194 |
} |
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|
195 |
|
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|
196 |
@Override |
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|
197 |
@SuppressWarnings("unchecked") |
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|
198 |
public final <T> T getOption(SocketOption<T> name) throws IOException { |
3acf8e5e2ca0
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changeset
|
199 |
if (name == null) |
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|
200 |
throw new NullPointerException(); |
3acf8e5e2ca0
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changeset
|
201 |
if (!supportedOptions().contains(name)) |
3acf8e5e2ca0
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changeset
|
202 |
throw new UnsupportedOperationException("'" + name + "' not supported"); |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
203 |
|
3acf8e5e2ca0
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parents:
diff
changeset
|
204 |
try { |
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changeset
|
205 |
begin(); |
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|
206 |
return (T) Net.getSocketOption(fd, Net.UNSPEC, name); |
3acf8e5e2ca0
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changeset
|
207 |
} finally { |
3acf8e5e2ca0
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|
208 |
end(); |
3acf8e5e2ca0
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changeset
|
209 |
} |
3acf8e5e2ca0
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parents:
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changeset
|
210 |
} |
3acf8e5e2ca0
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changeset
|
211 |
|
3acf8e5e2ca0
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changeset
|
212 |
private static class DefaultOptionsHolder { |
3acf8e5e2ca0
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|
213 |
static final Set<SocketOption<?>> defaultOptions = defaultOptions(); |
3acf8e5e2ca0
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|
214 |
|
3acf8e5e2ca0
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changeset
|
215 |
private static Set<SocketOption<?>> defaultOptions() { |
3acf8e5e2ca0
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|
216 |
HashSet<SocketOption<?>> set = new HashSet<SocketOption<?>>(2); |
3acf8e5e2ca0
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|
217 |
set.add(StandardSocketOption.SO_RCVBUF); |
3acf8e5e2ca0
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|
218 |
set.add(StandardSocketOption.SO_REUSEADDR); |
3acf8e5e2ca0
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|
219 |
return Collections.unmodifiableSet(set); |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
220 |
} |
3acf8e5e2ca0
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parents:
diff
changeset
|
221 |
} |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
222 |
|
3acf8e5e2ca0
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|
223 |
@Override |
3acf8e5e2ca0
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|
224 |
public final Set<SocketOption<?>> supportedOptions() { |
3acf8e5e2ca0
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|
225 |
return DefaultOptionsHolder.defaultOptions; |
3acf8e5e2ca0
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parents:
diff
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|
226 |
} |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
227 |
|
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
228 |
@Override |
3acf8e5e2ca0
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|
229 |
public final String toString() { |
3acf8e5e2ca0
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diff
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|
230 |
StringBuilder sb = new StringBuilder(); |
3acf8e5e2ca0
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|
231 |
sb.append(this.getClass().getName()); |
3acf8e5e2ca0
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parents:
diff
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|
232 |
sb.append('['); |
3acf8e5e2ca0
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diff
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|
233 |
if (!isOpen()) |
3acf8e5e2ca0
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diff
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|
234 |
sb.append("closed"); |
3acf8e5e2ca0
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parents:
diff
changeset
|
235 |
else { |
3acf8e5e2ca0
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parents:
diff
changeset
|
236 |
if (localAddress == null) { |
3acf8e5e2ca0
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alanb
parents:
diff
changeset
|
237 |
sb.append("unbound"); |
3acf8e5e2ca0
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parents:
diff
changeset
|
238 |
} else { |
3acf8e5e2ca0
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parents:
diff
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|
239 |
sb.append(localAddress.toString()); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
240 |
} |
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|
241 |
} |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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242 |
sb.append(']'); |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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243 |
return sb.toString(); |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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244 |
} |
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6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
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} |