Class: Vernier::Collector::RetainedCollector

Inherits:
Vernier::Collector show all
Defined in:
lib/vernier/collector.rb

Instance Attribute Summary

Attributes inherited from Vernier::Collector

#stack_table

Instance Method Summary collapse

Methods inherited from Vernier::Collector

#add_marker, #current_time, new, #record_interval, #stop

Constructor Details

#initialize(mode, options) ⇒ RetainedCollector

Returns a new instance of RetainedCollector.



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# File 'lib/vernier/collector.rb', line 48

def initialize(mode, options)
  @stack_table = StackTable.new
  @heap_tracker = HeapTracker.new(@stack_table)

  @started_at = Process.clock_gettime(Process::CLOCK_MONOTONIC, :nanosecond)
  super
end

Instance Method Details

#drain ⇒ Object 



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# File 'lib/vernier/collector.rb', line 60

def drain
  @heap_tracker.drain
end

#finish ⇒ Object 



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# File 'lib/vernier/collector.rb', line 64

def finish
  @heap_tracker.drain

  GC.start

  @stack_table.finalize

  GC.start

  @heap_tracker.lock
  tracker_data = @heap_tracker.data

  samples = tracker_data.fetch(:samples)
  weights = tracker_data.fetch(:weights)

  result = Result.new
  result.instance_variable_set(:@threads, {
    0 => {
      tid: 0,
      name: "retained memory",
      started_at: @started_at,
      samples: samples,
      weights: weights,
      sample_categories: [0] * samples.size,
    }
  })
  result.instance_variable_set(:@meta, {
    started_at: @started_at
  })
  result
end

#start ⇒ Object 



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# File 'lib/vernier/collector.rb', line 56

def start
  @heap_tracker.collect
end