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

java.nio.channels.SelectionKey.cancel()
Cancels this key.

                  doAccept(key);
                else if (key.isReadable())
                  doRead(key);
              }
            } catch (IOException e) {
              key.cancel();
            }
            key = null;
          }
        } catch (OutOfMemoryError e) {
          // we can run out of memory if we have too many threads

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    @Override
    protected void destroy(NioSession session) throws Exception {
        ByteChannel ch = session.getChannel();
        SelectionKey key = session.getSelectionKey();
        if (key != null) {
            key.cancel();
        }
        ch.close();
    }


    @Override

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    @Override
    protected void close(ServerSocketChannel handle) throws Exception {
        SelectionKey key = handle.keyFor(selector);
        if (key != null) {
            key.cancel();
        }
        handle.close();
    }


    @Override

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                            while(iter.hasNext())
                            {
                                key = (SelectionKey) iter.next();
                                if (key.isValid()&&key.interestOps()==0)
                                {
                                    key.cancel();
                                }
                            }
                            try
                            {
                                Thread.sleep(20);  // tune or configure this

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                    try
                    {
                        if (!key.isValid())
                        {
                            key.cancel();
                            SelectChannelEndPoint endpoint = (SelectChannelEndPoint)key.attachment();
                            if (endpoint != null)
                                endpoint.doUpdateKey();
                            continue;
                        }

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        NioWorker worker = channel.getWorker();
        if (worker != null) {
            Selector selector = worker.selector;
            SelectionKey key = channel.socket.keyFor(selector);
            if (key != null) {
                key.cancel();
            }
        }


        boolean connected = channel.isConnected();
        boolean bound = channel.isBound();

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                  doAccept(key);
                else if (key.isReadable())
                  doRead(key);
              }
            } catch (IOException e) {
              key.cancel();
            }
            key = null;
          }
        } catch (OutOfMemoryError e) {
          // we can run out of memory if we have too many threads

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                catch( IOException e )
                {
                    exceptionMonitor.exceptionCaught( this, e );
                }
                session.notifyClose();
                key.cancel();
                selector.wakeup(); // wake up again to trigger thread death
            }
        }
    }

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            {
                entry.exception = e;
            }
            finally
            {
                key.cancel();
                if( entry.session == null )
                {
                    try
                    {
                        ch.close();

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                synchronized( entry )
                {
                    entry.notify();
                }


                key.cancel();
            }
        }
    }


    private SocketSession newSession( SocketChannel ch, IoHandler handler ) throws IOException

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