Class: DDMetrics::Stopwatch

Inherits:

Object

• Object
• DDMetrics::Stopwatch

Defined in:

lib/ddmetrics/stopwatch.rb

Defined Under Namespace

Classes: AlreadyRunningError, NotRunningError, StillRunningError

Instance Method Summary

• #duration ⇒ Object
• #initialize ⇒ Stopwatch constructor

  A new instance of Stopwatch.

• #running? ⇒ Boolean
• #start ⇒ Object
• #stop ⇒ Object
• #stopped? ⇒ Boolean

Constructor Details

#initialize ⇒ Stopwatch

Returns a new instance of Stopwatch.

# File 'lib/ddmetrics/stopwatch.rb', line 23

def initialize
  @duration = 0.0
  @last_start = nil
end

Instance Method Details

#duration ⇒ Object

Raises:

• (StillRunningError)

# File 'lib/ddmetrics/stopwatch.rb', line 39

def duration
  raise StillRunningError if running?
  @duration
end

#running? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/ddmetrics/stopwatch.rb', line 44

def running?
  !@last_start.nil?
end

#start ⇒ Object

Raises:

• (AlreadyRunningError)

# File 'lib/ddmetrics/stopwatch.rb', line 28

def start
  raise AlreadyRunningError if running?
  @last_start = Time.now
end

#stop ⇒ Object

Raises:

• (NotRunningError)

# File 'lib/ddmetrics/stopwatch.rb', line 33

def stop
  raise NotRunningError unless running?
  @duration += (Time.now - @last_start)
  @last_start = nil
end

#stopped? ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/ddmetrics/stopwatch.rb', line 48

def stopped?
  !running?
end