se.lth.cs.realtime.event
Class PeriodicEvent

java.lang.Object
  java.util.EventObject
      se.lth.cs.realtime.event.RTEvent
          se.lth.cs.realtime.event.PeriodicEvent

All Implemented Interfaces:

java.io.Serializable

public class PeriodicEvent

extends RTEvent

Generic event used to trigger periodic activities in an event-driven fashion, as an alternative to using PeriodicThread which is time driven. Both RTThread and other subclasses are candidates for being triggered by PeriodicEvents, whenever based on externally triggered cyclic behavior. Some timer or periodic thread is needed for the generation of periodic events.

A PeriodicEvent has no owner. That is, owner is set to null, enabling the event to be sent over and over again from the same source. Subclasses are, however, free to assign ownership simply by assigning the (protected) owner field.

See Also:

License, PeriodicThread, Timer, RTEvent, Serialized Form

Field Summary

Fields inherited from class se.lth.cs.realtime.event.RTEvent

owner, ticker, timestamp

Fields inherited from class java.util.EventObject

source

Constructor Summary

PeriodicEvent()
Constructs an PeriodicEvent object with the current thread as source and a time stamp from the current system time.

PeriodicEvent(long ts)
Constructs an PeriodicEvent object with the current thread as source and with the specified time stamp.

PeriodicEvent(java.lang.Object source)
Constructs an PeriodicEvent object with the specified source object and a time stamp from the current system time.

PeriodicEvent(java.lang.Object source, long ts)
Constructs an PeriodicEvent object with the specified source object and time stamp.

PeriodicEvent(java.lang.Object source, long ts, Timebase timebase)
Constructs an PeriodicEvent object with the specified source object and time-stamp with respect to the specified time-base.

Methods inherited from class se.lth.cs.realtime.event.RTEvent

getMillis, getNanos, getOwner, getSeconds, getTicks, getTimebase, paramString, setOwner, toString

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Constructor Detail

PeriodicEvent

public PeriodicEvent()

Constructs an PeriodicEvent object with the current thread as source and a time stamp from the current system time.

PeriodicEvent

public PeriodicEvent(long ts)

Constructs an PeriodicEvent object with the current thread as source and with the specified time stamp.

Parameters:

ts - The time from which the event originates.

PeriodicEvent

public PeriodicEvent(java.lang.Object source)

Constructs an PeriodicEvent object with the specified source object and a time stamp from the current system time.

Parameters:

source - The object where the event originated.

PeriodicEvent

public PeriodicEvent(java.lang.Object source,
                     long ts)

Constructs an PeriodicEvent object with the specified source object and time stamp.

Parameters:

source - The object where the event originated.

ts - The time from which the event originates.

PeriodicEvent

public PeriodicEvent(java.lang.Object source,
                     long ts,
                     Timebase timebase)

Constructs an PeriodicEvent object with the specified source object and time-stamp with respect to the specified time-base.

Parameters:

source - The object where the event originated.

ts - The time from which the event originates.