Class: Dtrace::Provider::Klass

Inherits:
Object
  • Object
show all
Defined in:
lib/dtrace/provider/klass.rb

Overview

A dynamically-created DTrace provider class.

Instance Method Summary collapse

Constructor Details

#initialize(dof, probes) ⇒ Klass

Returns a new instance of Klass.



13
14
15
16
17
18
19
 
# File 'lib/dtrace/provider/klass.rb', line 13

def initialize(dof, probes)
  # must stash a reference to the DOF in the provider:
  # on OSX at least, freeing the generated DOF removes
  # the probes from the kernel. 
  @dof = dof
  @probes = probes
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(probe, *args, &block) ⇒ Object 



21
22
23
24
25
26
27
28
29
 
# File 'lib/dtrace/provider/klass.rb', line 21

def method_missing(probe, *args, &block)
  if @probes[probe].nil?
    raise Dtrace::Exception.new("no such probe in #{self.to_s}: #{probe.to_s}")
  else 
    if @probes[probe].is_enabled?
      block.call @probes[probe]
    end
  end
end