Class: TuneMyGc::Interposer

Inherits:
Object
  • Object
show all
Defined in:
lib/tunemygc/interposer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(spy = TuneMyGc.spy) ⇒ Interposer

Returns a new instance of Interposer.



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# File 'lib/tunemygc/interposer.rb', line 10

def initialize(spy = TuneMyGc.spy)
  reset
  @spy = TuneMyGc::Spies.const_get(spy).new
end

Instance Attribute Details

#installed ⇒ Object

Returns the value of attribute installed.



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# File 'lib/tunemygc/interposer.rb', line 8

def installed
  @installed
end

#spy ⇒ Object (readonly)

Returns the value of attribute spy.



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# File 'lib/tunemygc/interposer.rb', line 7

def spy
  @spy
end

Instance Method Details

#check_uninstall ⇒ Object 



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# File 'lib/tunemygc/interposer.rb', line 49

def check_uninstall
  @spy.check_uninstall
end

#install ⇒ Object 



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# File 'lib/tunemygc/interposer.rb', line 23

def install
  return if @installed
  TuneMyGc.log "interposing"
  if TuneMyGc.rails?
    require 'active_support'
    ActiveSupport.on_load(:after_initialize) do
      TuneMyGc.interposer.on_initialized
    end
  else
    TuneMyGc.interposer.on_initialized
  end
  TuneMyGc.log "hooked: after_initialize"

  at_exit do
    if @installed
      TuneMyGc.log "at_exit"
      @spy.uninstall
      TuneMyGc.snapshot(:TERMINATED)
      TuneMyGc.reccommendations
    end
  end
  TuneMyGc.log "hooked: at_exit"
  @installed = true
  TuneMyGc.log "interposed"
end

#on_initialized ⇒ Object 



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# File 'lib/tunemygc/interposer.rb', line 15

def on_initialized
  GC.start(full_mark: true, :immediate_sweep => true)
  TuneMyGc.install_gc_tracepoint
  TuneMyGc.log "hooked: GC tracepoints"
  TuneMyGc.snapshot(:BOOTED)
  TuneMyGc.interposer.spy.install
end

#uninstall ⇒ Object 



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# File 'lib/tunemygc/interposer.rb', line 53

def uninstall
  TuneMyGc.uninstall_gc_tracepoint
  TuneMyGc.log "uninstalled GC tracepoint"
  @spy.uninstall
  reset
end