hu.mta.sztaki.lpds.cloud.simulator.iaas.constraints
Class ConstantConstraints

java.lang.Object
  hu.mta.sztaki.lpds.cloud.simulator.iaas.constraints.ResourceConstraints
      hu.mta.sztaki.lpds.cloud.simulator.iaas.constraints.ConstantConstraints

All Implemented Interfaces:

Comparable<ResourceConstraints>

public class ConstantConstraints
extends ResourceConstraints

Defines the non-mutable main resource constraints representation

Author:

"Gabor Kecskemeti, Distributed and Parallel Systems Group, University of Innsbruck (c) 2013" "Gabor Kecskemeti, Laboratory of Parallel and Distributed Systems, MTA SZTAKI (c) 2012"

Field Summary

static ConstantConstraints	noResources Provides easy access to the one and original zero constraints
private double	requiredCPUs
private long	requiredMemory
private boolean	requiredProcessingIsMinimum
private double	requiredProcessingPower
private double	totalProcessingPower

Constructor Summary

ConstantConstraints(double cpu, double processing, boolean isMinimum, long memory)
The main constructor to define resource constraints

ConstantConstraints(double cpu, double processing, long memory)
A constructor to define resource constraints with exact amount of resources

ConstantConstraints(ResourceConstraints toCopy)
Allows to make an arbitrary resourceconstraints object into a constant one

Method Summary

double	getRequiredCPUs() Allows to query how many CPUs this constraints object represent
long	getRequiredMemory() Allows to query how much memory this constraints object represent
double	getRequiredProcessingPower() Allows to query the performance of a single CPU core represented by this constraints object represent
double	getTotalProcessingPower() The total processing power of all cores represented by this constraints object: total=cpus*processingpower
boolean	isRequiredProcessingIsMinimum() Determines if the specified amounts of resources are minimally or exactly required.

Methods inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.constraints.ResourceConstraints

compareTo, toString

Methods inherited from class java.lang.Object

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

Field Detail

noResources

public static final ConstantConstraints noResources

Provides easy access to the one and original zero constraints

requiredCPUs

private final double requiredCPUs

requiredProcessingPower

private final double requiredProcessingPower

requiredProcessingIsMinimum

private final boolean requiredProcessingIsMinimum

requiredMemory

private final long requiredMemory

totalProcessingPower

private final double totalProcessingPower

Constructor Detail

ConstantConstraints

public ConstantConstraints(double cpu,
                           double processing,
                           long memory)

A constructor to define resource constraints with exact amount of resources

Parameters:

cpu - number of cores

processing - per core processing power in instructions/tick

memory - number of bytes

ConstantConstraints

public ConstantConstraints(double cpu,
                           double processing,
                           boolean isMinimum,
                           long memory)

The main constructor to define resource constraints

Parameters:

cpu - number of cores

processing - per core processing power in instructions/tick

isMinimum -

• true if the constraints define an absolute minimum (i.e., the constraints object could represent any exact constraints object with at least as much memory/processors)
• false if the constraints defined here are exactly defined no difference from them are accepted.

memory - number of bytes

ConstantConstraints

public ConstantConstraints(ResourceConstraints toCopy)

Allows to make an arbitrary resourceconstraints object into a constant one

Parameters:

toCopy - the other resource constraints to copy

Method Detail

getRequiredCPUs

public double getRequiredCPUs()

Description copied from class: ResourceConstraints

Allows to query how many CPUs this constraints object represent

Specified by:

getRequiredCPUs in class ResourceConstraints

Returns:

the amount of CPU cores represented by the object

getRequiredProcessingPower

public double getRequiredProcessingPower()

Description copied from class: ResourceConstraints

Allows to query the performance of a single CPU core represented by this constraints object represent

Specified by:

getRequiredProcessingPower in class ResourceConstraints

Returns:

the performance of a CPU core in instructions/tick

isRequiredProcessingIsMinimum

public boolean isRequiredProcessingIsMinimum()

Description copied from class: ResourceConstraints

Determines if the specified amounts of resources are minimally or exactly required.

Specified by:

isRequiredProcessingIsMinimum in class ResourceConstraints

Returns:

• true if the specified amount of resources could be over-fulfilled
• false if the object represents an exact amount of resources

getRequiredMemory

public long getRequiredMemory()

Description copied from class: ResourceConstraints

Allows to query how much memory this constraints object represent

Specified by:

getRequiredMemory in class ResourceConstraints

Returns:

the amount in bytes

getTotalProcessingPower

public double getTotalProcessingPower()

Description copied from class: ResourceConstraints

The total processing power of all cores represented by this constraints object: total=cpus*processingpower

Specified by:

getTotalProcessingPower in class ResourceConstraints

Returns:

the total processing power in instructions/tick