org.demac.management.thread
Class HeartbeatReceiver

java.lang.Object
  java.lang.Thread
      org.demac.management.thread.HeartbeatReceiver

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

HeartbeatReceiverImpl

public abstract class HeartbeatReceiver
extends java.lang.Thread

A HeartbeatReceiver calculates the maximum arrival time of the next heartbeat and takes the right actions (e.g. starting recovery) if the timeout is over.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

HeartbeatReceiver()

Method Summary

abstract void	dontStartAsCoordinator() This method is used to prevent the HeartbeatReceiver from starting a RecoveryCoordination as a Coordinator.
abstract boolean	isStopped() Determines whether the HeartbeatReceiver is stopped or not.
abstract void	newHeartbeat(int counter) This method is used to tell the HeartbeatReceiver that a new heartbeat arrived.
abstract void	stopHeartbeatReceiver() This method is used to stop the HeartbeatReceiver.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, run, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

HeartbeatReceiver

public HeartbeatReceiver()

Method Detail

dontStartAsCoordinator

public abstract void dontStartAsCoordinator()

This method is used to prevent the HeartbeatReceiver from starting a RecoveryCoordination as a Coordinator.

newHeartbeat

public abstract void newHeartbeat(int counter)

This method is used to tell the HeartbeatReceiver that a new heartbeat arrived.

Parameters:

the - consecutive counter of the heartbeat which determines which heartbeat arrived.

isStopped

public abstract boolean isStopped()

Determines whether the HeartbeatReceiver is stopped or not.

Returns:

true if the HeartbeatReceiver is stopped, false else.

stopHeartbeatReceiver

public abstract void stopHeartbeatReceiver()

This method is used to stop the HeartbeatReceiver.