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 |
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synchronized
final
void
|
close()
Closes this selector.
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final
boolean
|
isOpen()
Indicates whether this selector is open.
|
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final
SelectorProvider
|
provider()
Gets this selector's provider.
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| Protected Methods |
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final
void
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begin()
Indicates the beginning of a code section that includes an I/O operation
that is potentially blocking.
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final
Set<SelectionKey>
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cancelledKeys()
Returns this channel's set of canceled selection keys.
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final
void
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deregister(AbstractSelectionKey key)
Deletes the key from the channel's key set.
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final
void
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end()
Indicates the end of a code section that has been started with
begin() and that includes a potentially blocking I/O operation.
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abstract
void
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implCloseSelector()
Implements the closing of this channel.
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abstract
SelectionKey
|
register(AbstractSelectableChannel channel, int operations, Object attachment)
Registers a channel with this selector.
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[Expand]
Inherited Methods |
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From class java.nio.channels.Selector
|
abstract
void
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close()
Closes this selector.
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abstract
boolean
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isOpen()
Indicates whether this selector is open.
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abstract
Set<SelectionKey>
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keys()
Gets the set of registered keys.
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static
Selector
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open()
The factory method for selector.
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abstract
SelectorProvider
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provider()
Gets the provider of this selector.
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abstract
int
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select()
Detects if any of the registered channels is ready for I/O operations
according to its interest set. |
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abstract
int
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select(long timeout)
Detects if any of the registered channels is ready for I/O operations
according to its interest set. |
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abstract
int
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selectNow()
Detects if any of the registered channels is ready for I/O operations
according to its interest set. |
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abstract
Set<SelectionKey>
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selectedKeys()
Gets the selection keys whose channels are ready for operation.
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abstract
Selector
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wakeup()
Forces blocked select operations to return immediately.
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From class java.lang.Object
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Object
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clone()
Creates and returns a copy of this Object.
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boolean
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equals(Object o)
Compares this instance with the specified object and indicates if they
are equal.
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void
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finalize()
Is called before the object's memory is being reclaimed by the VM.
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final
Class<? extends Object>
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getClass()
Returns the unique instance of Class which represents this
object's class. |
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int
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hashCode()
Returns an integer hash code for this object.
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final
void
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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.
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final
void
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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.
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String
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toString()
Returns a string containing a concise, human-readable description of this
object.
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final
void
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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.
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final
void
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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.
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final
void
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wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
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Protected Constructors
protected
AbstractSelector
(SelectorProvider selectorProvider)
Constructs a new AbstractSelector.
Parameters
| selectorProvider
| the selector provider that creates this selector. |
Public Methods
public
final
synchronized
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.
