Module: Vernier::Autorun

Defined in:
lib/vernier/autorun.rb

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.collector ⇒ Object

Returns the value of attribute collector.



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# File 'lib/vernier/autorun.rb', line 8

def collector
  @collector
end

.options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/vernier/autorun.rb', line 9

def options
  @options
end

Class Method Details

.at_exit ⇒ Object 



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# File 'lib/vernier/autorun.rb', line 70

def self.at_exit
  stop if running?
end

.running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vernier/autorun.rb', line 66

def self.running?
  !!@collector
end

.start ⇒ Object 



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# File 'lib/vernier/autorun.rb', line 19

def self.start
  interval = options.fetch(:interval, 500).to_i
  allocation_interval = options.fetch(:allocation_interval, 0).to_i
  hooks = options.fetch(:hooks, "").split(",")
  metadata = if options[:metadata]
    JSON.parse(@options[:metadata].unpack1("m")).to_h { |k, v| [k.to_sym, v] }
  else
    {}
  end

  STDERR.puts("starting profiler with interval #{interval} and allocation interval #{allocation_interval}")

  @collector = Vernier::Collector.new(:wall, interval:, allocation_interval:, hooks:, metadata:)
  @collector.start
end

.stop ⇒ Object 



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# File 'lib/vernier/autorun.rb', line 35

def self.stop
  result = @collector.stop
  @collector = nil

  output_path = options[:output]
  unless output_path
    output_dir = options[:output_dir]
    unless output_dir
      if File.writable?(".")
        output_dir = "."
      else
        output_dir = Dir.tmpdir
      end
    end
    prefix = "profile-"
    timestamp = Time.now.strftime("%Y%m%d-%H%M%S")
    suffix = if options[:format] == "cpuprofile"
      ".vernier.cpuprofile"
    else
      ".vernier.json.gz"
    end

    output_path = File.expand_path("#{output_dir}/#{prefix}#{timestamp}-#{$$}#{suffix}")
  end

  result.write(out: output_path, format: options[:format] || "firefox")

  STDERR.puts(result.inspect)
  STDERR.puts("written to #{output_path}")
end

.toggle ⇒ Object 



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# File 'lib/vernier/autorun.rb', line 74

def self.toggle
  running? ? stop : start
end