org.npsnet.xrti
Class TimeStampQueue

java.lang.Object
  org.npsnet.xrti.TimeStampQueue

public class TimeStampQueue

extends java.lang.Object

TimeStampQueue represents priority time stamp queue for time stamp order (TSO) messages. Timestamp messages are sorted by the time value.

Author:

Stanislav Kozina

See Also:

HLAMessage

Field Summary

private java.util.LinkedList

list List used as a queue for time stamp messages.

Constructor Summary

TimeStampQueue()
Creates an instance of TimeStampQueue.

Method Summary

HLAMessage	dequeue() Dequeues and returns first message in queue or null if the queue is epmty.
void	enqueue(HLAMessage message) Enqueues specified message into the queue.
LogicalTime	getHeadTimeStamp() Returns time stamp of first message in the queue or null if the queue is epmty.
int	getLength() Returns the length of the queue.
boolean	isEmpty() Returns true if the queue is empty, false otherwise.

Methods inherited from class java.lang.Object

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

Field Detail

list

private java.util.LinkedList list

List used as a queue for time stamp messages. The list is sorted after every insertion.

Constructor Detail

TimeStampQueue

public TimeStampQueue()

Creates an instance of TimeStampQueue. You should never need to create an instance of this class.

Method Detail

isEmpty

public boolean isEmpty()

Returns true if the queue is empty, false otherwise.

Returns:

true if the queue is empty, false otherwise

enqueue

public void enqueue(HLAMessage message)

Enqueues specified message into the queue.

Parameters:

message - message to enqueue

dequeue

public HLAMessage dequeue()

Dequeues and returns first message in queue or null if the queue is epmty.

Returns:

first message in queue or null if the queue is epmty

getHeadTimeStamp

public LogicalTime getHeadTimeStamp()

Returns time stamp of first message in the queue or null if the queue is epmty.

Returns:

time stamp of first message in the queue or null if the queue is epmty

getLength

public int getLength()

Returns the length of the queue.

Returns:

the length of the queue