Class: Distem::Resource::VCPU

Inherits:

Object

• Object
• Distem::Resource::VCPU

show all

Defined in:

lib/distem/resource/vcpu.rb

Overview

Defined Under Namespace

Classes: VCore

Instance Attribute Summary (collapse)

• - (Object) pcpu

  The physical CPU associated to this virtual one.

• - (Object) vcores readonly

  Hash describing the associated virtual cores (key: VCore.id, val: VCore).

Instance Method Summary (collapse)

• - (Object) add_vcore(val, unit)

  Adds a new virtual core to this virtual CPU ==== Attributes * val The value to set on the virtual core, can be a frequency in mhz or a ratio * unit Tell if val is a frequency in MHz or if it is a ratio (allowed values are mhz or ratio).

• - (Object) attach

  Attach a physical cpu to this virtual one.

• - (Boolean) attached?
• - (Object) DELETE id
• - (Object) detach
• - (Object) get_vcore(id)

  Gets a VCore specifying it's id ==== Attributes * id The ID (VCore.id) of the VCore to return ==== Returns VCore object.

• - (VCPU) initialize(vnode) constructor

  Create a new VCPU.

• - (Object) remove_vcore(id)

  Remove a VCore from this VCPU ==== Attributes * id The if of the VCore to remove.

• - (Object) update_vcores(val, unit)

  Update every virtual cores of this virtual CPU ==== Attributes * val The value to set on the virtual cores, can be a frequency in mhz or a ratio * unit Tell if the val is a frequency in MHz or if it is a ratio (allowed values are mhz or ratio).

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# File 'lib/distem/resource/vcpu.rb', line 73

def initialize(vnode)
  @vcores = {}
  @vnode = vnode
  @pcpu = nil
end

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# File 'lib/distem/resource/vcpu.rb', line 67

def pcpu
  @pcpu
end

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# File 'lib/distem/resource/vcpu.rb', line 69

def vcores
  @vcores
end

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# File 'lib/distem/resource/vcpu.rb', line 108

def add_vcore(val,unit)
  vcore = VCore.new(val,unit)
  @vcores[vcore.id] = vcore
end

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# File 'lib/distem/resource/vcpu.rb', line 80

def attach
  raise Lib::UninitializedResourceError 'vnode.host' unless @vnode.host
  @pcpu = @vnode.host.cpu

  cores = @pcpu.alloc_cores(@vnode,@vcores.size,
    (@vnode.host.algorithms[:cpu] == Algorithm::CPU::GOV)
  )

  i = 0
  @vcores.each_value do |vcore|
    vcore.attach(cores[i])
    i += 1
  end
end

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# File 'lib/distem/resource/vcpu.rb', line 95

def attached?
  return @pcpu != nil
end

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# File 'lib/distem/resource/vcpu.rb', line 128

@vcores.delete(id)

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# File 'lib/distem/resource/vcpu.rb', line 99

def detach
  @pcpu.free_cores(@vnode) if @pcpu
end

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# File 'lib/distem/resource/vcpu.rb', line 119

def get_vcore(id)
  return @vcores[id]
end

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# File 'lib/distem/resource/vcpu.rb', line 127

def remove_vcore(id)
  @vcores.delete(id)
end

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# File 'lib/distem/resource/vcpu.rb', line 136

def update_vcores(val,unit)
  @vcores.each_value { |vcore| vcore.update(val,unit) }
end