Package jnr.enxio.channels

Class KQSelector

java.lang.Object

java.nio.channels.Selector

java.nio.channels.spi.AbstractSelector

jnr.enxio.channels.KQSelector

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

class KQSelector
extends java.nio.channels.spi.AbstractSelector

An implementation of a Selector that uses the BSD (including MacOS) kqueue(2) mechanism

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	KQSelector.Descriptor
private static class	KQSelector.EventIO
private static class	KQSelector.EventLayout
private static class	KQSelector.FreeBSD12EventLayout
private static class	KQSelector.LegacyEventLayout

Field Summary

Fields

Modifier and Type	Field	Description
private jnr.ffi.Pointer	changebuf
private static boolean	DEBUG
private java.util.Map<java.lang.Integer,KQSelector.Descriptor>	descriptors
private static int	EV_ADD
private static int	EV_CLEAR
private static int	EV_DELETE
private static int	EV_DISABLE
private static int	EV_ENABLE
private jnr.ffi.Pointer	eventbuf
private static int	EVFILT_READ
private static int	EVFILT_WRITE
private KQSelector.EventIO	io
private int	kqfd
private static int	MAX_EVENTS
private int[]	pipefd
private java.lang.Object	regLock
private jnr.ffi.Runtime	runtime
private java.util.Set<java.nio.channels.SelectionKey>	selected
private Native.Timespec	ZERO_TIMESPEC

Constructor Summary

Constructors

Constructor	Description
KQSelector(NativeSelectorProvider provider)

Method Summary

Modifier and Type	Method	Description
private int	handleCancelledKeys()
private void	handleChangedKey(KQSelector.Descriptor changed)
protected void	implCloseSelector()
(package private) void	interestOps(KQSelectionKey k, int ops)
java.util.Set<java.nio.channels.SelectionKey>	keys()
private int	poll(long timeout)
protected java.nio.channels.SelectionKey	register(java.nio.channels.spi.AbstractSelectableChannel ch, int ops, java.lang.Object att)
int	select()
int	select(long timeout)
java.util.Set<java.nio.channels.SelectionKey>	selectedKeys()
int	selectNow()
java.nio.channels.Selector	wakeup()
private void	wakeupReceived()

Methods inherited from class java.nio.channels.spi.AbstractSelector

begin, cancelledKeys, close, deregister, end, isOpen, provider

Methods inherited from class java.nio.channels.Selector

open

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

MAX_EVENTS

private static final int MAX_EVENTS

See Also:

Constant Field Values

EVFILT_READ

private static final int EVFILT_READ

See Also:

Constant Field Values

EVFILT_WRITE

private static final int EVFILT_WRITE

See Also:

Constant Field Values

EV_ADD

private static final int EV_ADD

See Also:

Constant Field Values

EV_DELETE

private static final int EV_DELETE

See Also:

Constant Field Values

EV_ENABLE

private static final int EV_ENABLE

See Also:

Constant Field Values

EV_DISABLE

private static final int EV_DISABLE

See Also:

Constant Field Values

EV_CLEAR

private static final int EV_CLEAR

See Also:

Constant Field Values

kqfd

private int kqfd

runtime

private final jnr.ffi.Runtime runtime

changebuf

private final jnr.ffi.Pointer changebuf

eventbuf

private final jnr.ffi.Pointer eventbuf

io

private final KQSelector.EventIO io

pipefd

private final int[] pipefd

regLock

private final java.lang.Object regLock

descriptors

private final java.util.Map<java.lang.Integer,KQSelector.Descriptor> descriptors

selected

private final java.util.Set<java.nio.channels.SelectionKey> selected

ZERO_TIMESPEC

private final Native.Timespec ZERO_TIMESPEC

Constructor Detail

KQSelector

public KQSelector(NativeSelectorProvider provider)

Method Detail

implCloseSelector

protected void implCloseSelector()
                          throws java.io.IOException

Specified by:

implCloseSelector in class java.nio.channels.spi.AbstractSelector

Throws:

java.io.IOException

register

protected java.nio.channels.SelectionKey register(java.nio.channels.spi.AbstractSelectableChannel ch,
                                                  int ops,
                                                  java.lang.Object att)

Specified by:

register in class java.nio.channels.spi.AbstractSelector

keys

public java.util.Set<java.nio.channels.SelectionKey> keys()

Specified by:

keys in class java.nio.channels.Selector

selectedKeys

public java.util.Set<java.nio.channels.SelectionKey> selectedKeys()

Specified by:

selectedKeys in class java.nio.channels.Selector

selectNow

public int selectNow()
              throws java.io.IOException

Specified by:

selectNow in class java.nio.channels.Selector

Throws:

java.io.IOException

select

public int select(long timeout)
           throws java.io.IOException

Specified by:

select in class java.nio.channels.Selector

Throws:

java.io.IOException

select

public int select()
           throws java.io.IOException

Specified by:

select in class java.nio.channels.Selector

Throws:

java.io.IOException

poll

private int poll(long timeout)

handleCancelledKeys

private int handleCancelledKeys()

handleChangedKey

private void handleChangedKey(KQSelector.Descriptor changed)

wakeupReceived

private void wakeupReceived()

wakeup

public java.nio.channels.Selector wakeup()

Specified by:

wakeup in class java.nio.channels.Selector

interestOps

void interestOps(KQSelectionKey k,
                 int ops)