Class Overview
AbstractSelector
is the base implementation class for selectors.
It realizes the interruption of selection by begin
and
end
. It also holds the cancellation and the deletion of the key
set.
Summary
Public Methods |
final
void
|
close()
Closes this selector.
|
final
boolean
|
isOpen()
Indicates whether this selector is open.
|
final
SelectorProvider
|
provider()
Gets this selector's provider.
|
Protected Methods |
final
void
|
begin()
Indicates the beginning of a code section that includes an I/O operation
that is potentially blocking.
|
final
Set<SelectionKey>
|
cancelledKeys()
Returns this channel's set of canceled selection keys.
|
final
void
|
deregister(AbstractSelectionKey key)
Deletes the key from the channel's key set.
|
final
void
|
end()
Indicates the end of a code section that has been started with
begin() and that includes a potentially blocking I/O operation.
|
abstract
void
|
implCloseSelector()
Implements the closing of this channel.
|
abstract
SelectionKey
|
register(AbstractSelectableChannel channel, int operations, Object attachment)
Registers a channel with this selector.
|
[Expand]
Inherited Methods |
From class java.nio.channels.Selector
abstract
void
|
close()
Closes this selector.
|
abstract
boolean
|
isOpen()
Indicates whether this selector is open.
|
abstract
Set<SelectionKey>
|
keys()
Gets the set of registered keys.
|
static
Selector
|
open()
|
abstract
SelectorProvider
|
provider()
Gets the provider of this selector.
|
abstract
int
|
select()
Detects if any of the registered channels is ready for I/O operations
according to its interest set .
|
abstract
int
|
select(long timeout)
Detects if any of the registered channels is ready for I/O operations
according to its interest set .
|
abstract
int
|
selectNow()
Detects if any of the registered channels is ready for I/O operations
according to its interest set .
|
abstract
Set<SelectionKey>
|
selectedKeys()
Gets the selection keys whose channels are ready for operation.
|
abstract
Selector
|
wakeup()
Forces blocked select operations to return immediately.
|
|
From class java.lang.Object
Object
|
clone()
Creates and returns a copy of this Object .
|
boolean
|
equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
|
void
|
finalize()
Called before the object's memory is reclaimed by the VM.
|
final
Class<? extends Object>
|
getClass()
Returns the unique instance of Class that represents this
object's class.
|
int
|
hashCode()
Returns an integer hash code for this object.
|
final
void
|
notify()
Causes a thread which is waiting on this object's monitor (by means of
calling one of the wait() methods) to be woken up.
|
final
void
|
notifyAll()
Causes all threads which are waiting on this object's monitor (by means
of calling one of the wait() methods) to be woken up.
|
String
|
toString()
Returns a string containing a concise, human-readable description of this
object.
|
final
void
|
wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
|
final
void
|
wait(long millis, int nanos)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
final
void
|
wait(long millis)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
|
Protected Constructors
protected
AbstractSelector
(SelectorProvider selectorProvider)
Constructs a new AbstractSelector
.
Parameters
selectorProvider
| the selector provider that creates this selector.
|
Public Methods
public
final
void
close
()
Closes this selector. This method does nothing if this selector is
already closed. The actual closing must be implemented by subclasses in
implCloseSelector()
.
public
final
boolean
isOpen
()
Indicates whether this selector is open.
Returns
true
if this selector is not closed, false
otherwise.
Gets this selector's provider.
Returns
- the provider of this selector.
Protected Methods
protected
final
void
begin
()
Indicates the beginning of a code section that includes an I/O operation
that is potentially blocking. After this operation, the application
should invoke the corresponding end(boolean)
method.
protected
final
Set<SelectionKey>
cancelledKeys
()
Returns this channel's set of canceled selection keys.
Returns
- the set of canceled selection keys.
Deletes the key from the channel's key set.
protected
final
void
end
()
Indicates the end of a code section that has been started with
begin()
and that includes a potentially blocking I/O operation.
protected
abstract
void
implCloseSelector
()
Implements the closing of this channel.
Registers a channel with this selector.
Parameters
channel
| the channel to be registered. |
operations
| the interest set of channel . |
attachment
| the attachment for the selection key. |
Returns
- the key related to the channel and this selector.