Examples of java.nio.channels.SelectableChannel.configureBlocking()

Class java.nio.channels.SelectableChannel

Examples of java.nio.channels.SelectableChannel.configureBlocking()

java.nio.channels.SelectableChannel.configureBlocking()
Adjusts this channel's blocking mode.
If this channel is registered with one or more selectors then an attempt to place it into blocking mode will cause an {@link IllegalBlockingModeException} to be thrown.
This method may be invoked at any time. The new blocking mode will only affect I/O operations that are initiated after this method returns. For some implementations this may require blocking until all pending I/O operations are complete.
If this method is invoked while another invocation of this method or of the {@link #register(Selector,int) register} method is in progressthen it will first block until the other operation is complete.
@param block If true then this channel will be placed inblocking mode; if false then it will be placed non-blocking mode @return This selectable channel @throws ClosedChannelException If this channel is closed @throws IllegalBlockingModeException If block is true and this channel is registered with one or more selectors @throws IOException If an I/O error occurs

            
            synchronized (selectable.blockingLock()) {
                boolean oldBlocking = selectable.isBlocking();


                try {
                    selectable.configureBlocking(false);
                    
                    io.addBlockingThread(this);
                    currentSelector = selectable.provider().openSelector();


                    SelectionKey key = selectable.register(currentSelector, ops);

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                        }
                    }
                    currentSelector = null;
                    io.removeBlockingThread(this);
                    try {
                        selectable.configureBlocking(oldBlocking);
                    } catch (IOException ioe) {
                        // ignore; I don't like doing it, but it seems like we
                        // really just need to make all channels non-blocking by
                        // default and use select when implementing blocking ops,
                        // so if this remains set non-blocking, perhaps it's not

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            SelectableChannel selectableChannel = (SelectableChannel)descriptor.getChannel();
            synchronized (selectableChannel.blockingLock()) {
                boolean oldBlocking = selectableChannel.isBlocking();
                try {
                    if (oldBlocking != block) {
                        selectableChannel.configureBlocking(block);
                    }
                    nWritten = descriptor.write(buffer);
                } finally {
                    if (oldBlocking != block) {
                        selectableChannel.configureBlocking(oldBlocking);

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                        selectableChannel.configureBlocking(block);
                    }
                    nWritten = descriptor.write(buffer);
                } finally {
                    if (oldBlocking != block) {
                        selectableChannel.configureBlocking(oldBlocking);
                    }
                }
            }
        } else {
            nWritten = descriptor.write(buffer);

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            SelectableChannel selectableChannel = (SelectableChannel)descriptor.getChannel();
            synchronized (selectableChannel.blockingLock()) {
                boolean oldBlocking = selectableChannel.isBlocking();
                try {
                    if (oldBlocking) {
                        selectableChannel.configureBlocking(false);
                    }
                    return descriptor.write(ByteBuffer.wrap(buf.unsafeBytes(), buf.begin(), buf.length()));
                } finally {
                    if (oldBlocking) {
                        selectableChannel.configureBlocking(oldBlocking);

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                        selectableChannel.configureBlocking(false);
                    }
                    return descriptor.write(ByteBuffer.wrap(buf.unsafeBytes(), buf.begin(), buf.length()));
                } finally {
                    if (oldBlocking) {
                        selectableChannel.configureBlocking(oldBlocking);
                    }
                }
            }
        } else {
            return descriptor.write(ByteBuffer.wrap(buf.unsafeBytes(), buf.begin(), buf.length()));

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        if (descriptor.getChannel() instanceof SelectableChannel) {
            SelectableChannel selectableChannel = (SelectableChannel)descriptor.getChannel();
            synchronized (selectableChannel.blockingLock()) {
                boolean oldBlocking = selectableChannel.isBlocking();
                try {
                    selectableChannel.configureBlocking(false);
                    return readpartial(number);
                } finally {
                    selectableChannel.configureBlocking(oldBlocking);
                }
            }

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                boolean oldBlocking = selectableChannel.isBlocking();
                try {
                    selectableChannel.configureBlocking(false);
                    return readpartial(number);
                } finally {
                    selectableChannel.configureBlocking(oldBlocking);
                }
            }
        } else if (descriptor.getChannel() instanceof FileChannel) {
            return fread(number);
        } else {

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                   RubyIO originalIO = (RubyIO) TypeConverter.convertToType(
                           (IRubyObject) key.attachment(), runtime.getIO(),
                           MethodIndex.TO_IO, "to_io");
                   boolean blocking = originalIO.getBlocking();
                   key.cancel();
                   channel.configureBlocking(blocking);
               }
           }
           selector.close();
           
           if (r.size() == 0 && w.size() == 0 && e.size() == 0) {

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    }


    @Override
    protected void init(NioSession session) throws Exception {
        SelectableChannel ch = (SelectableChannel) session.getChannel();
        ch.configureBlocking(false);
        session.setSelectionKey(ch.register(selector, SelectionKey.OP_READ,
                session));
    }


    @Override

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