Package org.apache.tomcat.util.net

# Class NioEndpoint.Poller

java.lang.Object
org.apache.tomcat.util.net.NioEndpoint.Poller

All Implemented Interfaces:
  `Runnable`

Enclosing class:
  NioEndpoint

public class NioEndpoint.Poller extends Object implements Runnable
Poller class.

## Constructor Summary

Constructors
Constructor
Description
`Poller()`

## Method Summary

Modifier and Type
Method
Description
`void`
`add(NioEndpoint.NioSocketWrapper socketWrapper, int interestOps)`
Add specified socket and associated pool to the poller.
`void`
`cancelledKey(SelectionKey sk, SocketWrapperBase<NioChannel> socketWrapper)`
`protected void`
`destroy()`
Destroy the poller.
`boolean`
`events()`
Processes events in the event queue of the Poller.
`int`
`getKeyCount()`
`Selector`
`getSelector()`
`protected void`
`processKey(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper)`
`SendfileState`
`processSendfile(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper, boolean calledByProcessor)`
`protected void`
`reg(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper, int intops)`
`void`
`register(NioEndpoint.NioSocketWrapper socketWrapper)`
Registers a newly created socket with the poller.
`void`
`run()`
The background thread that adds sockets to the Poller, checks the poller for triggered events and hands the associated socket off to an appropriate processor as events occur.
`protected void`
`timeout(int keyCount, boolean hasEvents)`
`protected void`
`unreg(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper, int readyOps)`

### Methods inherited from class java.lang.Object

`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

## Constructor Details

### Poller

public Poller() throws IOException

Throws:
  `IOException`

## Method Details

### getKeyCount

public int getKeyCount()

### getSelector

public Selector getSelector()

### destroy

protected void destroy()
Destroy the poller.

### add

public void add(NioEndpoint.NioSocketWrapper socketWrapper, int interestOps)
Add specified socket and associated pool to the poller. The socket will be added to a temporary array, and polled first after a maximum amount of time equal to pollTime (in most cases, latency will be much lower, however).

Parameters:
  `socketWrapper` - to add to the poller
  `interestOps` - Operations for which to register this socket with the Poller

### events

public boolean events()
Processes events in the event queue of the Poller.

Returns:
  `true` if some events were processed, `false` if queue was empty

### register

public void register(NioEndpoint.NioSocketWrapper socketWrapper)
Registers a newly created socket with the poller.

Parameters:
  `socketWrapper` - The socket wrapper

### cancelledKey

public void cancelledKey(SelectionKey sk, SocketWrapperBase<NioChannel> socketWrapper)

### run

public void run()
The background thread that adds sockets to the Poller, checks the poller for triggered events and hands the associated socket off to an appropriate processor as events occur.

Specified by:
  `run` in interface `Runnable`

### processKey

protected void processKey(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper)

### processSendfile

public SendfileState processSendfile(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper, boolean calledByProcessor)

### unreg

protected void unreg(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper, int readyOps)

### reg

protected void reg(SelectionKey sk, NioEndpoint.NioSocketWrapper socketWrapper, int intops)

### timeout

protected void timeout(int keyCount, boolean hasEvents)