Examples of java.nio.channels.SelectionKey.interestOps()

java.nio.channels.SelectionKey.interestOps()
Gets the interesting operation of this key. @return the interesting operation of this key @throws CancelledKeyException If the key has been cancelled already

                    SelectionKey sk = ch.keyFor(selector);
                    try {
                        if (sk == null) {
                            sk = ch.register(selector, ops, key);
                        } else {
                            sk.interestOps(sk.interestOps() | ops);
                        }
                    }catch (CancelledKeyException cx) {
                        cancel(sk,key,ops);
                    }catch (ClosedChannelException cx) {
                        cancel(sk,key,ops);

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                    SelectionKey sk = ch.keyFor(selector);
                    try {
                        if (sk == null) {
                            sk = ch.register(selector, ops, key);
                        } else {
                            sk.interestOps(sk.interestOps() | ops);
                        }
                    }catch (CancelledKeyException cx) {
                        cancel(sk,key,ops);
                    }catch (ClosedChannelException cx) {
                        cancel(sk,key,ops);

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                    try {
                        if (sk == null) {
                            if (SelectionKey.OP_WRITE==(ops&SelectionKey.OP_WRITE)) countDown(key.getWriteLatch());
                            if (SelectionKey.OP_READ==(ops&SelectionKey.OP_READ))countDown(key.getReadLatch());
                        } else {
                            sk.interestOps(sk.interestOps() & (~ops));
                            if (SelectionKey.OP_WRITE==(ops&SelectionKey.OP_WRITE)) countDown(key.getWriteLatch());
                            if (SelectionKey.OP_READ==(ops&SelectionKey.OP_READ))countDown(key.getReadLatch());
                            if (sk.interestOps()==0) {
                                sk.cancel();
                                sk.attach(null);

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                    try {
                        if (sk == null) {
                            if (SelectionKey.OP_WRITE==(ops&SelectionKey.OP_WRITE)) countDown(key.getWriteLatch());
                            if (SelectionKey.OP_READ==(ops&SelectionKey.OP_READ))countDown(key.getReadLatch());
                        } else {
                            sk.interestOps(sk.interestOps() & (~ops));
                            if (SelectionKey.OP_WRITE==(ops&SelectionKey.OP_WRITE)) countDown(key.getWriteLatch());
                            if (SelectionKey.OP_READ==(ops&SelectionKey.OP_READ))countDown(key.getReadLatch());
                            if (sk.interestOps()==0) {
                                sk.cancel();
                                sk.attach(null);

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                            if (SelectionKey.OP_READ==(ops&SelectionKey.OP_READ))countDown(key.getReadLatch());
                        } else {
                            sk.interestOps(sk.interestOps() & (~ops));
                            if (SelectionKey.OP_WRITE==(ops&SelectionKey.OP_WRITE)) countDown(key.getWriteLatch());
                            if (SelectionKey.OP_READ==(ops&SelectionKey.OP_READ))countDown(key.getReadLatch());
                            if (sk.interestOps()==0) {
                                sk.cancel();
                                sk.attach(null);
                            }
                        }
                    }catch (CancelledKeyException cx) {

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                        SelectionKey sk = (SelectionKey) iterator.next();
                        KeyAttachment attachment = (KeyAttachment)sk.attachment();
                        try {
                            attachment.access();
                            iterator.remove(); ;
                            sk.interestOps(sk.interestOps() & (~sk.readyOps()));
                            if ( sk.isReadable() ) {
                                countDown(attachment.getReadLatch());
                            }
                            if (sk.isWritable()) {
                                countDown(attachment.getWriteLatch());

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                        SelectionKey sk = (SelectionKey) iterator.next();
                        KeyAttachment attachment = (KeyAttachment)sk.attachment();
                        try {
                            attachment.access();
                            iterator.remove(); ;
                            sk.interestOps(sk.interestOps() & (~sk.readyOps()));
                            if ( sk.isReadable() ) {
                                countDown(attachment.getReadLatch());
                            }
                            if (sk.isWritable()) {
                                countDown(attachment.getWriteLatch());

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                if (!key.isValid()) {
                    continue;
                }
                try {
                    readyOps = key.readyOps();
                    key.interestOps(key.interestOps() & (~readyOps));
                } catch (CancelledKeyException e) {
                    // swallow exception
                    continue;
                }
            }

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                if (!key.isValid()) {
                    continue;
                }
                try {
                    readyOps = key.readyOps();
                    key.interestOps(key.interestOps() & (~readyOps));
                } catch (CancelledKeyException e) {
                    // swallow exception
                    continue;
                }
            }

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                if (key == null || (!key.isValid())) {
                    throw new ClosedAsynchronousChannelException();
                }


    try {
        interestOps = key.interestOps();
    } catch (CancelledKeyException e) {
        throw new ClosedAsynchronousChannelException();
    }


                SelectableChannel channel = asyncKey.channel();

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