Examples of java.nio.channels.Selector.keys()

java.nio.channels.Selector.keys()
Returns this selector's key set.
The key set is not directly modifiable. A key is removed only after it has been cancelled and its channel has been deregistered. Any attempt to modify the key set will cause an {@link UnsupportedOperationException} to be thrown.
The key set is not thread-safe.
@return This selector's key set @throws ClosedSelectorException If this selector is closed

                    flushSessions();
                    cancelKeys();


                    if (selector.keys().isEmpty()) {
                        synchronized (DatagramAcceptorDelegate.this) {
                            if (selector.keys().isEmpty()
                                    && registerQueue.isEmpty()
                                    && cancelQueue.isEmpty()) {
                                worker = null;
                                try {
                                    selector.close();

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                    if (nKeys > 0) {
                        processSessions(selector.selectedKeys());
                    }


                    processTimedOutSessions(selector.keys());


                    if (selector.keys().isEmpty()) {
                        if (System.currentTimeMillis() - lastActive > workerTimeout * 1000L) {
                            synchronized (lock) {
                                if (selector.keys().isEmpty()

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                        processSessions(selector.selectedKeys());
                    }


                    processTimedOutSessions(selector.keys());


                    if (selector.keys().isEmpty()) {
                        if (System.currentTimeMillis() - lastActive > workerTimeout * 1000L) {
                            synchronized (lock) {
                                if (selector.keys().isEmpty()
                                        && connectQueue.isEmpty()) {
                                    worker = null;

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                    processTimedOutSessions(selector.keys());


                    if (selector.keys().isEmpty()) {
                        if (System.currentTimeMillis() - lastActive > workerTimeout * 1000L) {
                            synchronized (lock) {
                                if (selector.keys().isEmpty()
                                        && connectQueue.isEmpty()) {
                                    worker = null;
                                    try {
                                        selector.close();
                                    } catch (IOException e) {

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                    }


                    flushSessions();
                    cancelKeys();


                    if (selector.keys().isEmpty()) {
                        synchronized (DatagramConnectorDelegate.this) {
                            if (selector.keys().isEmpty()
                                    && registerQueue.isEmpty()
                                    && cancelQueue.isEmpty()) {
                                worker = null;

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                    flushSessions();
                    cancelKeys();


                    if (selector.keys().isEmpty()) {
                        synchronized (DatagramConnectorDelegate.this) {
                            if (selector.keys().isEmpty()
                                    && registerQueue.isEmpty()
                                    && cancelQueue.isEmpty()) {
                                worker = null;
                                try {
                                    selector.close();

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                    doFlush();
                    doRemove();
                    notifyIdleness();


                    if (selector.keys().isEmpty()) {
                        synchronized (lock) {
                            if (selector.keys().isEmpty()
                                    && newSessions.isEmpty()) {
                                worker = null;

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                    doRemove();
                    notifyIdleness();


                    if (selector.keys().isEmpty()) {
                        synchronized (lock) {
                            if (selector.keys().isEmpty()
                                    && newSessions.isEmpty()) {
                                worker = null;


                                try {
                                    selector.close();

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        // process idle sessions
        long currentTime = System.currentTimeMillis();
        if ((currentTime - lastIdleCheckTime) >= 1000) {
            lastIdleCheckTime = currentTime;
            Selector selector = getSelector();
            Set keys = selector.keys();
            if (keys != null) {
                for (Iterator it = keys.iterator(); it.hasNext();) {
                    SelectionKey key = (SelectionKey) it.next();
                    SocketSessionImpl session = (SocketSessionImpl) key
                            .attachment();

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    // Recreating the selector and registering all channles with
    // the new selector
    synchronized (this) {
      Selector tempSel = clientsSel;
      clientsSel = Selector.open();
      for (SelectionKey sk: tempSel.keys()) {
        IOService serv = (IOService)sk.attachment();
        sk.cancel();
        if (serv.isConnected()) {
          SocketChannel sc = serv.getSocketChannel();
          try {

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