Field Detail

• SHARED

  protected static final boolean SHARED

• blockingSelector

  protected NioBlockingSelector blockingSelector

• SHARED_SELECTOR

  protected volatile java.nio.channels.Selector SHARED_SELECTOR

• maxSelectors

  protected int maxSelectors

• sharedSelectorTimeout

  protected long sharedSelectorTimeout

• maxSpareSelectors

  protected int maxSpareSelectors

• enabled

  protected boolean enabled

• active

  protected java.util.concurrent.atomic.AtomicInteger active

• spare

  protected java.util.concurrent.atomic.AtomicInteger spare

• selectors

  protected java.util.concurrent.ConcurrentLinkedQueue<java.nio.channels.Selector> selectors

Constructor Detail

• NioSelectorPool

  public NioSelectorPool()

Method Detail

• getSharedSelector

  protected java.nio.channels.Selector getSharedSelector()
                                                  throws java.io.IOException

  Throws:

  java.io.IOException

• get

  public java.nio.channels.Selector get()
                                 throws java.io.IOException

  Throws:

  java.io.IOException

• put

  public void put(java.nio.channels.Selector s)
           throws java.io.IOException

  Throws:

  java.io.IOException

• close

  public void close()
             throws java.io.IOException

  Throws:

  java.io.IOException

• open

  public void open()
            throws java.io.IOException

  Throws:

  java.io.IOException

• write

  public int write(java.nio.ByteBuffer buf,
          NioChannel socket,
          java.nio.channels.Selector selector,
          long writeTimeout,
          boolean block)
            throws java.io.IOException

  Performs a write using the bytebuffer for data to be written and a selector to block (if blocking is requested). If the selector parameter is null, and blocking is requested then it will perform a busy write that could take up a lot of CPU cycles.

  Parameters:

  buf - The buffer containing the data, we will write as long as (buf.hasRemaining()==true)

  socket - The socket to write data to

  selector - The selector to use for blocking, if null then a busy write will be initiated

  writeTimeout - The timeout for this write operation in milliseconds, -1 means no timeout

  block - true to perform a blocking write otherwise a non-blocking write will be performed

  Returns:

  int - returns the number of bytes written

  Throws:

  java.io.EOFException - if write returns -1

  java.net.SocketTimeoutException - if the write times out

  java.io.IOException - if an IO Exception occurs in the underlying socket logic

• read

  public int read(java.nio.ByteBuffer buf,
         NioChannel socket,
         java.nio.channels.Selector selector,
         long readTimeout)
           throws java.io.IOException

  Performs a blocking read using the bytebuffer for data to be read and a selector to block. If the selector parameter is null, then it will perform a busy read that could take up a lot of CPU cycles.

  Parameters:

  buf - ByteBuffer - the buffer containing the data, we will read as until we have read at least one byte or we timed out

  socket - SocketChannel - the socket to write data to

  selector - Selector - the selector to use for blocking, if null then a busy read will be initiated

  readTimeout - long - the timeout for this read operation in milliseconds, -1 means no timeout

  Returns:

  int - returns the number of bytes read

  Throws:

  java.io.EOFException - if read returns -1

  java.net.SocketTimeoutException - if the read times out

  java.io.IOException - if an IO Exception occurs in the underlying socket logic

• read

  public int read(java.nio.ByteBuffer buf,
         NioChannel socket,
         java.nio.channels.Selector selector,
         long readTimeout,
         boolean block)
           throws java.io.IOException

  Performs a read using the bytebuffer for data to be read and a selector to register for events should you have the block=true. If the selector parameter is null, then it will perform a busy read that could take up a lot of CPU cycles.

  Parameters:

  buf - ByteBuffer - the buffer containing the data, we will read as until we have read at least one byte or we timed out

  socket - SocketChannel - the socket to write data to

  selector - Selector - the selector to use for blocking, if null then a busy read will be initiated

  readTimeout - long - the timeout for this read operation in milliseconds, -1 means no timeout

  block - - true if you want to block until data becomes available or timeout time has been reached

  Returns:

  int - returns the number of bytes read

  Throws:

  java.io.EOFException - if read returns -1

  java.net.SocketTimeoutException - if the read times out

  java.io.IOException - if an IO Exception occurs in the underlying socket logic

• setMaxSelectors

  public void setMaxSelectors(int maxSelectors)

• setMaxSpareSelectors

  public void setMaxSpareSelectors(int maxSpareSelectors)

• setEnabled

  public void setEnabled(boolean enabled)

• setSharedSelectorTimeout

  public void setSharedSelectorTimeout(long sharedSelectorTimeout)

• getMaxSelectors

  public int getMaxSelectors()

• getMaxSpareSelectors

  public int getMaxSpareSelectors()

• isEnabled

  public boolean isEnabled()

• getSharedSelectorTimeout

  public long getSharedSelectorTimeout()

• getSelectors

  public java.util.concurrent.ConcurrentLinkedQueue<java.nio.channels.Selector> getSelectors()

• getSpare

  public java.util.concurrent.atomic.AtomicInteger getSpare()