com.isti.util

Class TimeEventQueue

java.lang.Object

com.isti.util.TimeEventQueue

public class TimeEventQueue
extends java.lang.Object

Class TimeEventQueue defines a queue of time-event values.

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Vector	queueVectorObj

Constructor Summary

Constructors

Constructor and Description
TimeEventQueue() Creates a queue of time-event values.

Method Summary

Modifier and Type	Method and Description
void	addEvent(long timeVal) Adds a time-event value to the end of the queue.
boolean	checkPullNextEvent() Determines if the current system time is at or after the next time-event value in the queue (and removes it if so).
boolean	checkPullNextEvent(long currentTimeVal) Determines if the given current-time value is at or after the next time-event value in the queue (and removes it if so).
int	getEventQueueSize() Returns the current size of the time-event queue.
long	peekNextEvent() Returns the next time-event value from the queue.
long	pullNextEvent() Removes and returns the next time-event value from the queue.

Methods inherited from class java.lang.Object

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

Field Detail

queueVectorObj

protected final java.util.Vector queueVectorObj

Constructor Detail

TimeEventQueue

public TimeEventQueue()

Creates a queue of time-event values.

Method Detail

addEvent

public void addEvent(long timeVal)

Adds a time-event value to the end of the queue.

Parameters:

timeVal - time-event value.

checkPullNextEvent

public boolean checkPullNextEvent(long currentTimeVal)

Determines if the given current-time value is at or after the next time-event value in the queue (and removes it if so). Multiple time-event values may be removed from the queue if the current-time value is at or after them.

Parameters:

currentTimeVal - current-time value to use.

Returns:

true if the given current-time value is at or after the next time-event value in the queue; false if not.

checkPullNextEvent

public boolean checkPullNextEvent()

Determines if the current system time is at or after the next time-event value in the queue (and removes it if so). Multiple time-event values may be removed from the queue if the current system time value is at or after them.

Returns:

true if the current system time is at or after the next time-event value in the queue; false if not.

peekNextEvent

public long peekNextEvent()

Returns the next time-event value from the queue. The queue is left unchanged.

Returns:

The next time-event value from the queue, or 0 if none available.

pullNextEvent

public long pullNextEvent()

Removes and returns the next time-event value from the queue.

Returns:

The next time-event value from the queue, or 0 if none available.

getEventQueueSize

public int getEventQueueSize()

Returns the current size of the time-event queue.

Returns:

The current size of the time-event queue.