author | alanb |
Fri, 30 Mar 2018 08:28:09 +0100 | |
changeset 49493 | 814bd31f8da0 |
parent 49290 | 07779973cbe2 |
child 49702 | 09c01737ad27 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2000, 2018, 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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||
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package sun.nio.ch; |
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import java.io.FileDescriptor; |
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import java.io.IOException; |
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import java.net.InetSocketAddress; |
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import java.net.ProtocolFamily; |
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import java.net.ServerSocket; |
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import java.net.SocketAddress; |
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import java.net.SocketOption; |
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import java.net.StandardProtocolFamily; |
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import java.net.StandardSocketOptions; |
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import java.nio.channels.AlreadyBoundException; |
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import java.nio.channels.AsynchronousCloseException; |
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import java.nio.channels.ClosedChannelException; |
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import java.nio.channels.NotYetBoundException; |
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import java.nio.channels.SelectionKey; |
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import java.nio.channels.ServerSocketChannel; |
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import java.nio.channels.SocketChannel; |
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import java.nio.channels.spi.SelectorProvider; |
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import java.util.Collections; |
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import java.util.HashSet; |
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import java.util.Objects; |
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import java.util.Set; |
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import java.util.concurrent.locks.ReentrantLock; |
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import sun.net.NetHooks; |
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/** |
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* An implementation of ServerSocketChannels |
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*/ |
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class ServerSocketChannelImpl |
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extends ServerSocketChannel |
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implements SelChImpl |
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{ |
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// Used to make native close and configure calls |
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private static NativeDispatcher nd; |
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// Our file descriptor |
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private final FileDescriptor fd; |
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private final int fdVal; |
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// Lock held by thread currently blocked on this channel |
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private final ReentrantLock acceptLock = new ReentrantLock(); |
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// Lock held by any thread that modifies the state fields declared below |
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// DO NOT invoke a blocking I/O operation while holding this lock! |
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private final Object stateLock = new Object(); |
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// -- The following fields are protected by stateLock |
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// Channel state, increases monotonically |
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private static final int ST_INUSE = 0; |
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private static final int ST_CLOSING = 1; |
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private static final int ST_KILLPENDING = 2; |
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private static final int ST_KILLED = 3; |
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private int state; |
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// ID of native thread currently blocked in this channel, for signalling |
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private long thread; |
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// Binding |
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private InetSocketAddress localAddress; // null => unbound |
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// set true when exclusive binding is on and SO_REUSEADDR is emulated |
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private boolean isReuseAddress; |
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// Our socket adaptor, if any |
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private ServerSocket socket; |
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// -- End of fields protected by stateLock |
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ServerSocketChannelImpl(SelectorProvider sp) throws IOException { |
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super(sp); |
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this.fd = Net.serverSocket(true); |
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this.fdVal = IOUtil.fdVal(fd); |
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} |
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ServerSocketChannelImpl(SelectorProvider sp, FileDescriptor fd, boolean bound) |
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throws IOException |
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{ |
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super(sp); |
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this.fd = fd; |
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this.fdVal = IOUtil.fdVal(fd); |
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if (bound) { |
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synchronized (stateLock) { |
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localAddress = Net.localAddress(fd); |
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} |
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} |
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} |
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// @throws ClosedChannelException if channel is closed |
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private void ensureOpen() throws ClosedChannelException { |
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if (!isOpen()) |
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throw new ClosedChannelException(); |
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} |
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@Override |
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public ServerSocket socket() { |
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synchronized (stateLock) { |
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if (socket == null) |
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socket = ServerSocketAdaptor.create(this); |
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return socket; |
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} |
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} |
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@Override |
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public SocketAddress getLocalAddress() throws IOException { |
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synchronized (stateLock) { |
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ensureOpen(); |
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return (localAddress == null) |
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? null |
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: Net.getRevealedLocalAddress(localAddress); |
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} |
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} |
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@Override |
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public <T> ServerSocketChannel setOption(SocketOption<T> name, T value) |
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throws IOException |
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{ |
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Objects.requireNonNull(name); |
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if (!supportedOptions().contains(name)) |
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throw new UnsupportedOperationException("'" + name + "' not supported"); |
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synchronized (stateLock) { |
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ensureOpen(); |
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if (name == StandardSocketOptions.IP_TOS) { |
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ProtocolFamily family = Net.isIPv6Available() ? |
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StandardProtocolFamily.INET6 : StandardProtocolFamily.INET; |
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Net.setSocketOption(fd, family, name, value); |
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return this; |
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} |
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if (name == StandardSocketOptions.SO_REUSEADDR && Net.useExclusiveBind()) { |
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// SO_REUSEADDR emulated when using exclusive bind |
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isReuseAddress = (Boolean)value; |
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} else { |
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// no options that require special handling |
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Net.setSocketOption(fd, Net.UNSPEC, name, value); |
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} |
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return this; |
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} |
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} |
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@Override |
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@SuppressWarnings("unchecked") |
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public <T> T getOption(SocketOption<T> name) |
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throws IOException |
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{ |
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Objects.requireNonNull(name); |
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if (!supportedOptions().contains(name)) |
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throw new UnsupportedOperationException("'" + name + "' not supported"); |
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|
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synchronized (stateLock) { |
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ensureOpen(); |
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if (name == StandardSocketOptions.SO_REUSEADDR && Net.useExclusiveBind()) { |
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// SO_REUSEADDR emulated when using exclusive bind |
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return (T)Boolean.valueOf(isReuseAddress); |
|
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} |
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// no options that require special handling |
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return (T) Net.getSocketOption(fd, Net.UNSPEC, name); |
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} |
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} |
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private static class DefaultOptionsHolder { |
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static final Set<SocketOption<?>> defaultOptions = defaultOptions(); |
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private static Set<SocketOption<?>> defaultOptions() { |
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HashSet<SocketOption<?>> set = new HashSet<>(); |
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set.add(StandardSocketOptions.SO_RCVBUF); |
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set.add(StandardSocketOptions.SO_REUSEADDR); |
36115 | 198 |
if (Net.isReusePortAvailable()) { |
199 |
set.add(StandardSocketOptions.SO_REUSEPORT); |
|
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} |
|
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set.add(StandardSocketOptions.IP_TOS); |
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return Collections.unmodifiableSet(set); |
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} |
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} |
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205 |
|
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@Override |
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public final Set<SocketOption<?>> supportedOptions() { |
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return DefaultOptionsHolder.defaultOptions; |
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209 |
} |
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210 |
|
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211 |
@Override |
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212 |
public ServerSocketChannel bind(SocketAddress local, int backlog) throws IOException { |
49290 | 213 |
synchronized (stateLock) { |
214 |
ensureOpen(); |
|
215 |
if (localAddress != null) |
|
216 |
throw new AlreadyBoundException(); |
|
217 |
InetSocketAddress isa = (local == null) |
|
218 |
? new InetSocketAddress(0) |
|
219 |
: Net.checkAddress(local); |
|
220 |
SecurityManager sm = System.getSecurityManager(); |
|
221 |
if (sm != null) |
|
222 |
sm.checkListen(isa.getPort()); |
|
223 |
NetHooks.beforeTcpBind(fd, isa.getAddress(), isa.getPort()); |
|
224 |
Net.bind(fd, isa.getAddress(), isa.getPort()); |
|
225 |
Net.listen(fd, backlog < 1 ? 50 : backlog); |
|
226 |
localAddress = Net.localAddress(fd); |
|
2 | 227 |
} |
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228 |
return this; |
2 | 229 |
} |
230 |
||
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231 |
/** |
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232 |
* Marks the beginning of an I/O operation that might block. |
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233 |
* |
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234 |
* @throws ClosedChannelException if the channel is closed |
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235 |
* @throws NotYetBoundException if the channel's socket has not been bound yet |
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236 |
*/ |
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|
237 |
private void begin(boolean blocking) throws ClosedChannelException { |
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|
238 |
if (blocking) |
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|
239 |
begin(); // set blocker to close channel if interrupted |
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|
240 |
synchronized (stateLock) { |
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|
241 |
ensureOpen(); |
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|
242 |
if (localAddress == null) |
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|
243 |
throw new NotYetBoundException(); |
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|
244 |
if (blocking) |
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|
245 |
thread = NativeThread.current(); |
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|
246 |
} |
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|
247 |
} |
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|
248 |
|
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|
249 |
/** |
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|
250 |
* Marks the end of an I/O operation that may have blocked. |
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|
251 |
* |
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|
252 |
* @throws AsynchronousCloseException if the channel was closed due to this |
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|
253 |
* thread being interrupted on a blocking I/O operation. |
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|
254 |
*/ |
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|
255 |
private void end(boolean blocking, boolean completed) |
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|
256 |
throws AsynchronousCloseException |
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|
257 |
{ |
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|
258 |
if (blocking) { |
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|
259 |
synchronized (stateLock) { |
ce06058197a4
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|
260 |
thread = 0; |
ce06058197a4
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changeset
|
261 |
// notify any thread waiting in implCloseSelectableChannel |
ce06058197a4
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|
262 |
if (state == ST_CLOSING) { |
ce06058197a4
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|
263 |
stateLock.notifyAll(); |
ce06058197a4
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|
264 |
} |
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|
265 |
} |
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|
266 |
end(completed); |
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|
267 |
} |
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changeset
|
268 |
} |
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changeset
|
269 |
|
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|
270 |
@Override |
2 | 271 |
public SocketChannel accept() throws IOException { |
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|
272 |
acceptLock.lock(); |
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|
273 |
try { |
2 | 274 |
int n = 0; |
275 |
FileDescriptor newfd = new FileDescriptor(); |
|
276 |
InetSocketAddress[] isaa = new InetSocketAddress[1]; |
|
277 |
||
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|
278 |
boolean blocking = isBlocking(); |
2 | 279 |
try { |
49001
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|
280 |
begin(blocking); |
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|
281 |
do { |
27300
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
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diff
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|
282 |
n = accept(this.fd, newfd, isaa); |
49001
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diff
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|
283 |
} while (n == IOStatus.INTERRUPTED && isOpen()); |
2 | 284 |
} finally { |
49001
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|
285 |
end(blocking, n > 0); |
2 | 286 |
assert IOStatus.check(n); |
287 |
} |
|
288 |
||
289 |
if (n < 1) |
|
290 |
return null; |
|
291 |
||
49001
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changeset
|
292 |
// newly accepted socket is initially in blocking mode |
2 | 293 |
IOUtil.configureBlocking(newfd, true); |
49001
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|
294 |
|
2 | 295 |
InetSocketAddress isa = isaa[0]; |
49001
ce06058197a4
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changeset
|
296 |
SocketChannel sc = new SocketChannelImpl(provider(), newfd, isa); |
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changeset
|
297 |
|
ce06058197a4
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changeset
|
298 |
// check permitted to accept connections from the remote address |
2 | 299 |
SecurityManager sm = System.getSecurityManager(); |
300 |
if (sm != null) { |
|
301 |
try { |
|
49001
ce06058197a4
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changeset
|
302 |
sm.checkAccept(isa.getAddress().getHostAddress(), isa.getPort()); |
2 | 303 |
} catch (SecurityException x) { |
304 |
sc.close(); |
|
305 |
throw x; |
|
306 |
} |
|
307 |
} |
|
308 |
return sc; |
|
309 |
||
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|
310 |
} finally { |
ffbb784a8873
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|
311 |
acceptLock.unlock(); |
2 | 312 |
} |
313 |
} |
|
314 |
||
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changeset
|
315 |
@Override |
2 | 316 |
protected void implConfigureBlocking(boolean block) throws IOException { |
49001
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diff
changeset
|
317 |
acceptLock.lock(); |
ce06058197a4
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diff
changeset
|
318 |
try { |
ce06058197a4
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diff
changeset
|
319 |
synchronized (stateLock) { |
ce06058197a4
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diff
changeset
|
320 |
ensureOpen(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
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diff
changeset
|
321 |
IOUtil.configureBlocking(fd, block); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
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|
322 |
} |
ce06058197a4
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diff
changeset
|
323 |
} finally { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
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diff
changeset
|
324 |
acceptLock.unlock(); |
2 | 325 |
} |
326 |
} |
|
327 |
||
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|
328 |
/** |
ce06058197a4
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alanb
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diff
changeset
|
329 |
* Invoked by implCloseChannel to close the channel. |
ce06058197a4
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diff
changeset
|
330 |
* |
ce06058197a4
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alanb
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diff
changeset
|
331 |
* This method waits for outstanding I/O operations to complete. When in |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
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diff
changeset
|
332 |
* blocking mode, the socket is pre-closed and the threads in blocking I/O |
ce06058197a4
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alanb
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diff
changeset
|
333 |
* operations are signalled to ensure that the outstanding I/O operations |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
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diff
changeset
|
334 |
* complete quickly. |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
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diff
changeset
|
335 |
* |
ce06058197a4
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diff
changeset
|
336 |
* The socket is closed by this method when it is not registered with a |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
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diff
changeset
|
337 |
* Selector. Note that a channel configured blocking may be registered with |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
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diff
changeset
|
338 |
* a Selector. This arises when a key is canceled and the channel configured |
ce06058197a4
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diff
changeset
|
339 |
* to blocking mode before the key is flushed from the Selector. |
ce06058197a4
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|
340 |
*/ |
ce06058197a4
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changeset
|
341 |
@Override |
ce06058197a4
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changeset
|
342 |
protected void implCloseSelectableChannel() throws IOException { |
ce06058197a4
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diff
changeset
|
343 |
assert !isOpen(); |
ce06058197a4
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changeset
|
344 |
|
ce06058197a4
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diff
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|
345 |
boolean interrupted = false; |
ce06058197a4
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|
346 |
boolean blocking; |
ce06058197a4
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changeset
|
347 |
|
ce06058197a4
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changeset
|
348 |
// set state to ST_CLOSING |
ce06058197a4
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changeset
|
349 |
synchronized (stateLock) { |
ce06058197a4
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changeset
|
350 |
assert state < ST_CLOSING; |
ce06058197a4
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diff
changeset
|
351 |
state = ST_CLOSING; |
ce06058197a4
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changeset
|
352 |
blocking = isBlocking(); |
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diff
changeset
|
353 |
} |
ce06058197a4
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diff
changeset
|
354 |
|
ce06058197a4
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diff
changeset
|
355 |
// wait for any outstanding accept to complete |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
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diff
changeset
|
356 |
if (blocking) { |
ce06058197a4
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diff
changeset
|
357 |
synchronized (stateLock) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
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changeset
|
358 |
assert state == ST_CLOSING; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
359 |
long th = thread; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
360 |
if (th != 0) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
361 |
nd.preClose(fd); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
362 |
NativeThread.signal(th); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
363 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
364 |
// wait for accept operation to end |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
365 |
while (thread != 0) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
366 |
try { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
367 |
stateLock.wait(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
368 |
} catch (InterruptedException e) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
369 |
interrupted = true; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
370 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
371 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
372 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
373 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
374 |
} else { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
375 |
// non-blocking mode: wait for accept to complete |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
376 |
acceptLock.lock(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
377 |
acceptLock.unlock(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
378 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
379 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
380 |
// set state to ST_KILLPENDING |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
381 |
synchronized (stateLock) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
382 |
assert state == ST_CLOSING; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
383 |
state = ST_KILLPENDING; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
384 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
385 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
386 |
// close socket if not registered with Selector |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
387 |
if (!isRegistered()) |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
388 |
kill(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
389 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
390 |
// restore interrupt status |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
391 |
if (interrupted) |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
392 |
Thread.currentThread().interrupt(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
393 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
394 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
395 |
@Override |
2 | 396 |
public void kill() throws IOException { |
397 |
synchronized (stateLock) { |
|
49001
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
398 |
if (state == ST_KILLPENDING) { |
2 | 399 |
state = ST_KILLED; |
49001
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
400 |
nd.close(fd); |
2 | 401 |
} |
49001
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
402 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
403 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
404 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
405 |
/** |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
406 |
* Returns true if channel's socket is bound |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
407 |
*/ |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
408 |
boolean isBound() { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
409 |
synchronized (stateLock) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
410 |
return localAddress != null; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
411 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
412 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
413 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
414 |
/** |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
415 |
* Returns the local address, or null if not bound |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
416 |
*/ |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
417 |
InetSocketAddress localAddress() { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
418 |
synchronized (stateLock) { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
419 |
return localAddress; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
420 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
421 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
422 |
|
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
423 |
/** |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
424 |
* Poll this channel's socket for a new connection up to the given timeout. |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
425 |
* @return {@code true} if there is a connection to accept |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
426 |
*/ |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
427 |
boolean pollAccept(long timeout) throws IOException { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
428 |
assert Thread.holdsLock(blockingLock()) && isBlocking(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
429 |
acceptLock.lock(); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
430 |
try { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
431 |
boolean polled = false; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
432 |
try { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
433 |
begin(true); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
434 |
int n = Net.poll(fd, Net.POLLIN, timeout); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
435 |
polled = (n > 0); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
436 |
} finally { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
437 |
end(true, polled); |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
438 |
} |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
439 |
return polled; |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
440 |
} finally { |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
441 |
acceptLock.unlock(); |
2 | 442 |
} |
443 |
} |
|
444 |
||
445 |
/** |
|
446 |
* Translates native poll revent set into a ready operation set |
|
447 |
*/ |
|
49493 | 448 |
public boolean translateReadyOps(int ops, int initialOps, SelectionKeyImpl ski) { |
449 |
int intOps = ski.nioInterestOps(); |
|
450 |
int oldOps = ski.nioReadyOps(); |
|
2 | 451 |
int newOps = initialOps; |
452 |
||
22604
9b394795e216
8031997: PPC64: Make the various POLL constants system dependant
simonis
parents:
19607
diff
changeset
|
453 |
if ((ops & Net.POLLNVAL) != 0) { |
2 | 454 |
// This should only happen if this channel is pre-closed while a |
455 |
// selection operation is in progress |
|
456 |
// ## Throw an error if this channel has not been pre-closed |
|
457 |
return false; |
|
458 |
} |
|
459 |
||
22604
9b394795e216
8031997: PPC64: Make the various POLL constants system dependant
simonis
parents:
19607
diff
changeset
|
460 |
if ((ops & (Net.POLLERR | Net.POLLHUP)) != 0) { |
2 | 461 |
newOps = intOps; |
49493 | 462 |
ski.nioReadyOps(newOps); |
2 | 463 |
return (newOps & ~oldOps) != 0; |
464 |
} |
|
465 |
||
22604
9b394795e216
8031997: PPC64: Make the various POLL constants system dependant
simonis
parents:
19607
diff
changeset
|
466 |
if (((ops & Net.POLLIN) != 0) && |
2 | 467 |
((intOps & SelectionKey.OP_ACCEPT) != 0)) |
468 |
newOps |= SelectionKey.OP_ACCEPT; |
|
469 |
||
49493 | 470 |
ski.nioReadyOps(newOps); |
2 | 471 |
return (newOps & ~oldOps) != 0; |
472 |
} |
|
473 |
||
49493 | 474 |
public boolean translateAndUpdateReadyOps(int ops, SelectionKeyImpl ski) { |
475 |
return translateReadyOps(ops, ski.nioReadyOps(), ski); |
|
2 | 476 |
} |
477 |
||
49493 | 478 |
public boolean translateAndSetReadyOps(int ops, SelectionKeyImpl ski) { |
479 |
return translateReadyOps(ops, 0, ski); |
|
2 | 480 |
} |
481 |
||
482 |
/** |
|
483 |
* Translates an interest operation set into a native poll event set |
|
484 |
*/ |
|
49493 | 485 |
public int translateInterestOps(int ops) { |
2 | 486 |
int newOps = 0; |
487 |
if ((ops & SelectionKey.OP_ACCEPT) != 0) |
|
22604
9b394795e216
8031997: PPC64: Make the various POLL constants system dependant
simonis
parents:
19607
diff
changeset
|
488 |
newOps |= Net.POLLIN; |
49493 | 489 |
return newOps; |
2 | 490 |
} |
491 |
||
492 |
public FileDescriptor getFD() { |
|
493 |
return fd; |
|
494 |
} |
|
495 |
||
496 |
public int getFDVal() { |
|
497 |
return fdVal; |
|
498 |
} |
|
499 |
||
500 |
public String toString() { |
|
24969
afa6934dd8e8
8041679: Replace uses of StringBuffer with StringBuilder within core library classes
psandoz
parents:
23010
diff
changeset
|
501 |
StringBuilder sb = new StringBuilder(); |
2 | 502 |
sb.append(this.getClass().getName()); |
503 |
sb.append('['); |
|
18212
22f8c33b0690
8001318: Socket.getLocalAddress not consistent with InetAddress.getLocalHost
khazra
parents:
18192
diff
changeset
|
504 |
if (!isOpen()) { |
2 | 505 |
sb.append("closed"); |
18212
22f8c33b0690
8001318: Socket.getLocalAddress not consistent with InetAddress.getLocalHost
khazra
parents:
18192
diff
changeset
|
506 |
} else { |
2 | 507 |
synchronized (stateLock) { |
49001
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
508 |
InetSocketAddress addr = localAddress; |
18212
22f8c33b0690
8001318: Socket.getLocalAddress not consistent with InetAddress.getLocalHost
khazra
parents:
18192
diff
changeset
|
509 |
if (addr == null) { |
2 | 510 |
sb.append("unbound"); |
511 |
} else { |
|
18212
22f8c33b0690
8001318: Socket.getLocalAddress not consistent with InetAddress.getLocalHost
khazra
parents:
18192
diff
changeset
|
512 |
sb.append(Net.getRevealedLocalAddressAsString(addr)); |
2 | 513 |
} |
514 |
} |
|
515 |
} |
|
516 |
sb.append(']'); |
|
517 |
return sb.toString(); |
|
518 |
} |
|
519 |
||
27300
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
520 |
/** |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
521 |
* Accept a connection on a socket. |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
522 |
* |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
523 |
* @implNote Wrap native call to allow instrumentation. |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
524 |
*/ |
49001
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
525 |
private int accept(FileDescriptor ssfd, |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
526 |
FileDescriptor newfd, |
27300
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
527 |
InetSocketAddress[] isaa) |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
528 |
throws IOException |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
529 |
{ |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
530 |
return accept0(ssfd, newfd, isaa); |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
531 |
} |
c4394453e952
8062501: Modifications of server socket channel accept() methods for instrumentation purposes
bpb
parents:
25859
diff
changeset
|
532 |
|
2 | 533 |
// -- Native methods -- |
534 |
||
535 |
// Accepts a new connection, setting the given file descriptor to refer to |
|
536 |
// the new socket and setting isaa[0] to the socket's remote address. |
|
537 |
// Returns 1 on success, or IOStatus.UNAVAILABLE (if non-blocking and no |
|
538 |
// connections are pending) or IOStatus.INTERRUPTED. |
|
539 |
// |
|
49001
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
540 |
private native int accept0(FileDescriptor ssfd, |
ce06058197a4
8198562: (ch) Separate blocking and non-blocking code paths (part 1)
alanb
parents:
48761
diff
changeset
|
541 |
FileDescriptor newfd, |
2 | 542 |
InetSocketAddress[] isaa) |
543 |
throws IOException; |
|
544 |
||
545 |
private static native void initIDs(); |
|
546 |
||
547 |
static { |
|
19607
bee007586d06
8022594: Potential deadlock in <clinit> of sun.nio.ch.Util/IOUtil
alanb
parents:
18212
diff
changeset
|
548 |
IOUtil.load(); |
2 | 549 |
initIDs(); |
550 |
nd = new SocketDispatcher(); |
|
551 |
} |
|
552 |
||
553 |
} |