Package edu.kit.ipd.sdq.pcm.simulation.scheduler.exact.loaddistribution.balancers

Class AbstractLoadBalancer

java.lang.Object

edu.kit.ipd.sdq.pcm.simulation.scheduler.exact.loaddistribution.balancers.AbstractLoadBalancer

All Implemented Interfaces:

ILoadBalancer

Direct Known Subclasses:

IdleToThresholdBalancer, OneToIdleBalancer, ToThresholdBalancer

public abstract class AbstractLoadBalancer
extends Object
implements ILoadBalancer

Field Summary

Fields

Modifier and Type	Field	Description
protected double	balancing_interval	Minimum time that needs to pass between two load balancing attempts
protected Hashtable<IResourceInstance,Double>	last_balanced
protected boolean	prio_increasing	Determines the order how movable processes are returned.
protected boolean	queue_ascending	Determines the order how movable processes are returned.
protected MultipleQueuesStrategy	queue_holder	Holder of the runqueues that need to be balanced.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractLoadBalancer(double balancing_interval, boolean prio_increasing, boolean queue_ascending)	Creates a new instance of a load balancer.

Method Summary

Modifier and Type	Method	Description
protected int	load(IResourceInstance instance)
void	setQueueHolder(MultipleQueuesStrategy queue_holder)

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.kit.ipd.sdq.pcm.simulation.scheduler.exact.loaddistribution.ILoadBalancer

activelyBalance, onFork, onSleep, onTerminate, onWake

Field Detail

balancing_interval

protected double balancing_interval

Minimum time that needs to pass between two load balancing attempts

queue_holder

protected MultipleQueuesStrategy queue_holder

Holder of the runqueues that need to be balanced.

prio_increasing

protected boolean prio_increasing

Determines the order how movable processes are returned. If true, the priority of the processes is increasing, otherwise decreasing.

queue_ascending

protected boolean queue_ascending

Determines the order how movable processes are returned. If true, the first processes are returned in the same order of the queue, otherwise they are returned in reverse order.

last_balanced

protected Hashtable<IResourceInstance,Double> last_balanced

Constructor Detail

AbstractLoadBalancer

protected AbstractLoadBalancer(double balancing_interval,
                               boolean prio_increasing,
                               boolean queue_ascending)

Creates a new instance of a load balancer.

Parameters:

balancing_interval - Minimum time that needs to pass between two executions of the load balancer.

prio_increasing - Determines the order how movable processes are returned. If true, the priority of the processes is increasing, otherwise decreasing.

queue_ascending - Determines the order how movable processes are returned. If true, the first processes are returned in the same order of the queue, otherwise they are returned in reverse order.

Method Detail

load

protected int load(IResourceInstance instance)

setQueueHolder

public void setQueueHolder(MultipleQueuesStrategy queue_holder)