Example usage for java.nio.channels SelectableChannel register

List of usage examples for java.nio.channels SelectableChannel register

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Introduction

In this page you can find the example usage for java.nio.channels SelectableChannel register.

Prototype

public abstract SelectionKey register(Selector sel, int ops, Object att) throws ClosedChannelException;

Source Link

Document

Registers this channel with the given selector, returning a selection key.

Usage

From source file:edu.tsinghua.lumaqq.qq.net.Porter.java

/**
 * portporter//from   w w  w .  j  av a  2s . co m
 * 
 * @param port
 *       IPort
 * @throws ClosedChannelException
 *       
 */
public void register(IPort port) throws ClosedChannelException {
    SelectableChannel channel = port.channel();
    if (channel instanceof SocketChannel)
        channel.register(selector, SelectionKey.OP_CONNECT, port.getNIOHandler());
    else if (channel instanceof DatagramChannel)
        channel.register(selector, SelectionKey.OP_READ, port.getNIOHandler());
    if (!ports.contains(port))
        ports.add(port);
}

From source file:edu.tsinghua.lumaqq.qq.net.Porter.java

/**
 * ?channel//  ww  w . j av  a 2 s.  c om
 * 
 * @param port
 * @param ops
 * @throws ClosedChannelException
 */
public void register(IPort port, int ops) throws ClosedChannelException {
    SelectableChannel channel = port.channel();
    if (channel instanceof SocketChannel)
        channel.register(selector, ops, port.getNIOHandler());
    else if (channel instanceof DatagramChannel)
        channel.register(selector, ops, port.getNIOHandler());
    if (!ports.contains(port))
        ports.add(port);
}

From source file:edu.tsinghua.lumaqq.qq.net.Porter.java

/**
 * ???/*from   w w w. ja va2  s  .co  m*/
 * 
 * @param proxy
 *       IProxy
 * @throws ClosedChannelException
 *       
 */
public void register(IProxy proxy) throws ClosedChannelException {
    SelectableChannel channel = proxy.channel();
    if (channel instanceof SocketChannel)
        channel.register(selector, SelectionKey.OP_CONNECT, proxy.getNIOHandler());
    else if (channel instanceof DatagramChannel)
        channel.register(selector, SelectionKey.OP_READ, proxy.getNIOHandler());
    if (!proxies.contains(proxy))
        proxies.add(proxy);
}

From source file:com.alibaba.napoli.gecko.core.nio.impl.Reactor.java

private void registerChannelNow(final SelectableChannel channel, final int ops, final Object attachment,
        final Selector selector) {
    this.gate.lock();
    try {//www .  j av a  2 s  .c om
        if (channel.isOpen()) {
            channel.register(selector, ops, attachment);
        }
    } catch (final ClosedChannelException e) {
        log.error("Register channel error", e);
        this.controller.notifyException(e);
    } finally {
        this.gate.unlock();
    }
}

From source file:com.taobao.gecko.core.nio.impl.Reactor.java

private boolean lookJVMBug(final long before, final int selected, final long wait) throws IOException {
    boolean seeing = false;
    final long now = System.currentTimeMillis();
    /**//from  w  ww  .ja  v  a 2 s.  c om
     * Bug,(1)select0 (2)select (3) (4)wakenup
     */
    if (JVMBUG_THRESHHOLD > 0 && selected == 0 && wait > JVMBUG_THRESHHOLD && now - before < wait / 4
            && !this.wakenUp.get() /* waken up */
            && !Thread.currentThread().isInterrupted()/* Interrupted */) {
        this.jvmBug.incrementAndGet();
        // 1selector
        if (this.jvmBug.get() >= JVMBUG_THRESHHOLD2) {
            this.gate.lock();
            try {
                this.lastJVMBug = now;
                log.warn("JVM bug occured at " + new Date(this.lastJVMBug)
                        + ",http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6403933,reactIndex="
                        + this.reactorIndex);
                if (this.jvmBug1) {
                    log.debug("seeing JVM BUG(s) - recreating selector,reactIndex=" + this.reactorIndex);
                } else {
                    this.jvmBug1 = true;
                    log.info("seeing JVM BUG(s) - recreating selector,reactIndex=" + this.reactorIndex);
                }
                seeing = true;
                // selector
                final Selector new_selector = SystemUtils.openSelector();

                for (final SelectionKey k : this.selector.keys()) {
                    if (!k.isValid() || k.interestOps() == 0) {
                        continue;
                    }

                    final SelectableChannel channel = k.channel();
                    final Object attachment = k.attachment();
                    // interestOps>0channel
                    channel.register(new_selector, k.interestOps(), attachment);
                }

                this.selector.close();
                this.selector = new_selector;

            } finally {
                this.gate.unlock();
            }
            this.jvmBug.set(0);

        } else if (this.jvmBug.get() == JVMBUG_THRESHHOLD || this.jvmBug.get() == JVMBUG_THRESHHOLD1) {
            // BUG0interestedOps==0key
            if (this.jvmBug0) {
                log.debug("seeing JVM BUG(s) - cancelling interestOps==0,reactIndex=" + this.reactorIndex);
            } else {
                this.jvmBug0 = true;
                log.info("seeing JVM BUG(s) - cancelling interestOps==0,reactIndex=" + this.reactorIndex);
            }
            this.gate.lock();
            seeing = true;
            try {
                for (final SelectionKey k : this.selector.keys()) {
                    if (k.isValid() && k.interestOps() == 0) {
                        k.cancel();
                    }
                }
            } finally {
                this.gate.unlock();
            }
        }
    } else {
        this.jvmBug.set(0);
    }
    return seeing;
}

From source file:com.alibaba.napoli.gecko.core.nio.impl.Reactor.java

private boolean lookJVMBug(final long before, final int selected, final long wait) throws IOException {
    boolean seeing = false;
    final long now = System.currentTimeMillis();
    /**/*from  www. jav  a2s  . co  m*/
     * Bug?,(1)select0 (2)select?? (3)? (4)?wakenup
     */
    if (JVMBUG_THRESHHOLD > 0 && selected == 0 && wait > JVMBUG_THRESHHOLD && now - before < wait / 4
            && !this.wakenUp.get() /* waken up */
            && !Thread.currentThread().isInterrupted()/* Interrupted */) {
        this.jvmBug.incrementAndGet();
        // ?1?selector
        if (this.jvmBug.get() >= JVMBUG_THRESHHOLD2) {
            this.gate.lock();
            try {
                this.lastJVMBug = now;
                log.warn("JVM bug occured at " + new Date(this.lastJVMBug)
                        + ",http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6403933,reactIndex="
                        + this.reactorIndex);
                if (this.jvmBug1) {
                    log.debug("seeing JVM BUG(s) - recreating selector,reactIndex=" + this.reactorIndex);
                } else {
                    this.jvmBug1 = true;
                    log.info("seeing JVM BUG(s) - recreating selector,reactIndex=" + this.reactorIndex);
                }
                seeing = true;
                // selector
                final Selector new_selector = SystemUtils.openSelector();

                for (final SelectionKey k : this.selector.keys()) {
                    if (!k.isValid() || k.interestOps() == 0) {
                        continue;
                    }

                    final SelectableChannel channel = k.channel();
                    final Object attachment = k.attachment();
                    // ?interestOps>0channel
                    channel.register(new_selector, k.interestOps(), attachment);
                }

                this.selector.close();
                this.selector = new_selector;

            } finally {
                this.gate.unlock();
            }
            this.jvmBug.set(0);

        } else if (this.jvmBug.get() == JVMBUG_THRESHHOLD || this.jvmBug.get() == JVMBUG_THRESHHOLD1) {
            // BUG?0?interestedOps==0key
            if (this.jvmBug0) {
                log.debug("seeing JVM BUG(s) - cancelling interestOps==0,reactIndex=" + this.reactorIndex);
            } else {
                this.jvmBug0 = true;
                log.info("seeing JVM BUG(s) - cancelling interestOps==0,reactIndex=" + this.reactorIndex);
            }
            this.gate.lock();
            seeing = true;
            try {
                for (final SelectionKey k : this.selector.keys()) {
                    if (k.isValid() && k.interestOps() == 0) {
                        k.cancel();
                    }
                }
            } finally {
                this.gate.unlock();
            }
        }
    } else {
        this.jvmBug.set(0);
    }
    return seeing;
}

From source file:com.byteatebit.nbserver.simple.SelectorTask.java

@Override
public SelectionKey register(SelectableChannel channel, int ops, IOTask nioTask, IOTimeoutTask timeoutTask,
        long timeoutMs) {
    Preconditions.checkNotNull(channel, "channel cannot be null");
    Preconditions.checkNotNull(nioTask, "nioTask cannot be null");
    IOTimeoutTask ioTimeoutTask = timeoutTask == null ? defaultIoTimeoutTask : timeoutTask;
    if (LOG.isDebugEnabled())
        LOG.debug("registering channel " + channel + "for ops " + ops + " and task " + nioTask);
    SelectionKey key = null;//from ww  w .j a  v  a2s .c  o m
    NioSelectionKeyEntry selectionKeyEntry = null;
    synchronized (this) {
        try {
            key = channel.keyFor(selector);
            if (key != null) {
                key.interestOps(key.interestOps() | ops);
                selectionKeyEntry = (NioSelectionKeyEntry) key.attachment();
            } else {
                selectionKeyEntry = new NioSelectionKeyEntry();
                key = channel.register(selector, ops, selectionKeyEntry);
            }
        } catch (ClosedChannelException e) {
            throw new SelectorException(e);
        }
        selectionKeyEntry.setTask(nioTask, ioTimeoutTask, ops, timeoutMs);
    }
    if (LOG.isDebugEnabled())
        LOG.debug("Total number of selection keys: " + selector.keys().size());
    return key;
}

From source file:net.ymate.platform.serv.nio.support.NioEventProcessor.java

public void registerEvent(SelectableChannel channel, int ops, INioSession session) throws IOException {
    if (Thread.currentThread() == this) {
        SelectionKey key = channel.register(__selector, ops, session);
        if (session != null) {
            session.selectionKey(key);/*from  ww  w.  j  a  v  a 2 s  .  c om*/
            session.status(ISession.Status.CONNECTED);
            //
            __eventGroup.listener().onSessionRegisted(session);
        }
    } else {
        __eventQueues.offer(new Object[] { channel, ops, session });
        __selector.wakeup();
    }
}

From source file:net.ymate.platform.serv.nio.support.NioEventProcessor.java

protected void __doRegisterEvent() {
    Object[] _event;//  w  w  w. j  a va 2 s.  co  m
    while ((_event = __eventQueues.poll()) != null) {
        try {
            SelectableChannel _channel = (SelectableChannel) _event[0];
            if (!_channel.isOpen()) {
                continue;
            }
            INioSession _session = (INioSession) _event[2];
            SelectionKey _key = _channel.register(__selector, (Integer) _event[1], _session);
            if (_session != null) {
                _session.selectionKey(_key);
                _session.status(ISession.Status.CONNECTED);
                //
                __eventGroup.listener().onSessionRegisted(_session);
            }
        } catch (Exception e) {
            _LOG.error(e.getMessage(), RuntimeUtils.unwrapThrow(e));
        }
    }
}

From source file:org.apache.catalina.cluster.tcp.ReplicationListener.java

/**
 * Register the given channel with the given selector for
 * the given operations of interest//w  w w.  j  av a  2 s  .  c om
 */
protected void registerChannel(Selector selector, SelectableChannel channel, int ops, Object attach)
        throws Exception {
    if (channel == null)
        return; // could happen
    // set the new channel non-blocking
    channel.configureBlocking(false);
    // register it with the selector
    channel.register(selector, ops, attach);
}