Class: Async::Clock

Inherits:
Object
  • Object
show all
Defined in:
lib/async/clock.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(total = 0) ⇒ Clock

Returns a new instance of Clock.



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# File 'lib/async/clock.rb', line 43

def initialize(total = 0)
  @total = total
  @started = nil
end

Class Method Details

.measure ⇒ Object

Measure the execution of a block of code.



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# File 'lib/async/clock.rb', line 31

def self.measure
  start_time = self.now
  
  yield
  
  return self.now - start_time
end

.now ⇒ Object

Get the current elapsed monotonic time.



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# File 'lib/async/clock.rb', line 26

def self.now
  ::Process.clock_gettime(::Process::CLOCK_MONOTONIC)
end

.start ⇒ Object 



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# File 'lib/async/clock.rb', line 39

def self.start
  self.new.tap(&:start!)
end

Instance Method Details

#start! ⇒ Object 



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# File 'lib/async/clock.rb', line 48

def start!
  @started ||= Clock.now
end

#stop! ⇒ Object 



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# File 'lib/async/clock.rb', line 52

def stop!
  if @started
    @total += (Clock.now - @started)
    @started = nil
  end
  
  return @total
end

#total ⇒ Object 



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# File 'lib/async/clock.rb', line 61

def total
  total = @total
  
  if @started
    total += (Clock.now - @started)
  end
  
  return total
end