org.cloudbus.cloudsim

Class VmAllocationPolicySimple

java.lang.Object

org.cloudbus.cloudsim.VmAllocationPolicy

org.cloudbus.cloudsim.VmAllocationPolicySimple

public class VmAllocationPolicySimple
extends VmAllocationPolicy

VmAllocationPolicySimple is an VmAllocationPolicy that chooses, as the host for a VM, the host with less PEs in use.

Since:

CloudSim Toolkit 1.0

Author:

Rodrigo N. Calheiros, Anton Beloglazov

Constructor Summary

Constructors

Constructor and Description
VmAllocationPolicySimple(List<? extends Host> list) Creates the new VmAllocationPolicySimple object.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	allocateHostForVm(Vm vm) Allocates a host for a given VM.
boolean	allocateHostForVm(Vm vm, Host host) Allocates a specified host for a given VM.
void	deallocateHostForVm(Vm vm) Releases the host used by a VM.
protected List<Integer>	getFreePes() Gets the free pes.
Host	getHost(int vmId, int userId) Gets the host that is executing the given VM belonging to the given user.
Host	getHost(Vm vm) Gets the host that is executing the given VM belonging to the given user.
protected Map<String,Integer>	getUsedPes() Gets the used pes.
Map<String,Host>	getVmTable() Gets the vm table.
List<Map<String,Object>>	optimizeAllocation(List<? extends Vm> vmList) Optimize allocation of the VMs according to current utilization.
protected void	setFreePes(List<Integer> freePes) Sets the free pes.
protected void	setUsedPes(Map<String,Integer> usedPes) Sets the used pes.
protected void	setVmTable(Map<String,Host> vmTable) Sets the vm table.

Methods inherited from class org.cloudbus.cloudsim.VmAllocationPolicy

getHostList, setHostList

Methods inherited from class java.lang.Object

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

Constructor Detail

VmAllocationPolicySimple

public VmAllocationPolicySimple(List<? extends Host> list)

Creates the new VmAllocationPolicySimple object.

Parameters:

list - the list

Method Detail

allocateHostForVm

public boolean allocateHostForVm(Vm vm)

Allocates a host for a given VM.

Specified by:

allocateHostForVm in class VmAllocationPolicy

Parameters:

vm - VM specification

Returns:

$true if the host could be allocated; $false otherwise

deallocateHostForVm

public void deallocateHostForVm(Vm vm)

Releases the host used by a VM.

Specified by:

deallocateHostForVm in class VmAllocationPolicy

Parameters:

vm - the vm

getHost

public Host getHost(Vm vm)

Gets the host that is executing the given VM belonging to the given user.

Specified by:

getHost in class VmAllocationPolicy

Parameters:

vm - the vm

Returns:

the Host with the given vmID and userID; $null if not found

getHost

public Host getHost(int vmId,
           int userId)

Gets the host that is executing the given VM belonging to the given user.

Specified by:

getHost in class VmAllocationPolicy

Parameters:

vmId - the vm id

userId - the user id

Returns:

the Host with the given vmID and userID; $null if not found

getVmTable

public Map<String,Host> getVmTable()

Gets the vm table.

Returns:

the vm table

setVmTable

protected void setVmTable(Map<String,Host> vmTable)

Sets the vm table.

Parameters:

vmTable - the vm table

getUsedPes

protected Map<String,Integer> getUsedPes()

Gets the used pes.

Returns:

the used pes

setUsedPes

protected void setUsedPes(Map<String,Integer> usedPes)

Sets the used pes.

Parameters:

usedPes - the used pes

getFreePes

protected List<Integer> getFreePes()

Gets the free pes.

Returns:

the free pes

setFreePes

protected void setFreePes(List<Integer> freePes)

Sets the free pes.

Parameters:

freePes - the new free pes

optimizeAllocation

public List<Map<String,Object>> optimizeAllocation(List<? extends Vm> vmList)

Description copied from class: VmAllocationPolicy

Optimize allocation of the VMs according to current utilization.

Specified by:

optimizeAllocation in class VmAllocationPolicy

Parameters:

vmList - the vm list

Returns:

the array list< hash map< string, object>>

allocateHostForVm

public boolean allocateHostForVm(Vm vm,
                        Host host)

Description copied from class: VmAllocationPolicy

Allocates a specified host for a given VM.

Specified by:

allocateHostForVm in class VmAllocationPolicy

Parameters:

vm - virtual machine which the host is reserved to

Returns:

$true if the host could be allocated; $false otherwise