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

                    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 (lock) {
                            if (selector.keys().isEmpty()
                                    && registerQueue.isEmpty()
                                    && cancelQueue.isEmpty()) {
                                worker = null;

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                    flushSessions();
                    cancelKeys();


                    if (selector.keys().isEmpty()) {
                        synchronized (lock) {
                            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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                    }


                    flushSessions();
                    cancelKeys();


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

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                    flushSessions();
                    cancelKeys();


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

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                long now=System.currentTimeMillis();
                synchronized (this)
                {
                    _idleTimeout.setNow(now);
                    _retryTimeout.setNow(now);
                    if (_lowResourcesConnections>0 && selector.keys().size()>_lowResourcesConnections)
                        _idleTimeout.setDuration(_lowResourcesMaxIdleTime);
                    else 
                        _idleTimeout.setDuration(_maxIdleTime);
                    idle_next=_idleTimeout.getTimeToNext();
                    retry_next=_retryTimeout.getTimeToNext();

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                    // Exit the loop when there's nothing to handle.
                    // The shutdown flag is used to delay the shutdown of this
                    // loop to avoid excessive Selector creation when
                    // connection attempts are made in a one-by-one manner
                    // instead of concurrent manner.
                    if (selector.keys().isEmpty()) {
                        if (shutdown ||
                            bossExecutor instanceof ExecutorService && ((ExecutorService) bossExecutor).isShutdown()) {


                            synchronized (selectorGuard) {
                                if (selector.keys().isEmpty()) {

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                    if (selector.keys().isEmpty()) {
                        if (shutdown ||
                            bossExecutor instanceof ExecutorService && ((ExecutorService) bossExecutor).isShutdown()) {


                            synchronized (selectorGuard) {
                                if (selector.keys().isEmpty()) {
                                    try {
                                        selector.close();
                                    } catch (IOException e) {
                                        logger.warn(
                                                "Failed to close a selector.",

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