com.caucho.util

Class AlarmHeap

java.lang.Object

com.caucho.util.AlarmHeap

public class AlarmHeap
extends java.lang.Object

The alarm class provides a lightweight event scheduler. This allows an objects to schedule a timeout without creating a new thread.

A separate thread periodically tests the queue for alarms ready.

Constructor Summary

Constructors

Constructor and Description
AlarmHeap() Create a new wakeup alarm with a designated listener as a callback.

Method Summary

Modifier and Type	Method and Description
void	dequeue(Alarm alarm)
Alarm	extractAlarm(long now) Returns the next alarm ready to run
boolean	queueAt(Alarm alarm, long wakeTime) Queue the alarm for wakeup.
Alarm[]	toArray()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

AlarmHeap

public AlarmHeap()

Create a new wakeup alarm with a designated listener as a callback. The alarm is not scheduled.

Method Detail

extractAlarm

public Alarm extractAlarm(long now)

Returns the next alarm ready to run

queueAt

public boolean queueAt(Alarm alarm,
                       long wakeTime)

Queue the alarm for wakeup.

Parameters:

delta - time in milliseconds to wake

dequeue

public void dequeue(Alarm alarm)

toArray

public Alarm[] toArray()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object