Methods

Attributes

[R] children
[R] end
[R] name
[RW] payload
[R] time
[R] transaction_id

Class Public methods

new(name, start, ending, transaction_id, payload)

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 58
      def initialize(name, start, ending, transaction_id, payload)
        @name           = name
        @payload        = payload.dup
        @time           = start
        @transaction_id = transaction_id
        @end            = ending
        @children       = []
        @cpu_time_start = 0
        @cpu_time_finish = 0
        @allocation_count_start = 0
        @allocation_count_finish = 0
      end
🔎 See on GitHub

Instance Public methods

<<(event)

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 119
      def <<(event)
        @children << event
      end
🔎 See on GitHub

allocations()

Returns the number of allocations made since the call to start! and the call to finish!

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 99
      def allocations
        @allocation_count_finish - @allocation_count_start
      end
🔎 See on GitHub

cpu_time()

Returns the CPU time (in milliseconds) passed since the call to start! and the call to finish!

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 87
      def cpu_time
        (@cpu_time_finish - @cpu_time_start) * 1000
      end
🔎 See on GitHub

duration()

Returns the difference in milliseconds between when the execution of the event started and when it ended.

ActiveSupport::Notifications.subscribe('wait') do |*args|
  @event = ActiveSupport::Notifications::Event.new(*args)
end

ActiveSupport::Notifications.instrument('wait') do
  sleep 1
end

@event.duration # => 1000.138
📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 115
      def duration
        1000.0 * (self.end - time)
      end
🔎 See on GitHub

finish!()

Record information at the time this event finishes

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 79
      def finish!
        @cpu_time_finish = now_cpu
        @end = now
        @allocation_count_finish = now_allocations
      end
🔎 See on GitHub

idle_time()

Returns the idle time time (in milliseconds) passed since the call to start! and the call to finish!

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 93
      def idle_time
        duration - cpu_time
      end
🔎 See on GitHub

parent_of?(event)

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 123
      def parent_of?(event)
        @children.include? event
      end
🔎 See on GitHub

start!()

Record information at the time this event starts

📝 Source code 
# File activesupport/lib/active_support/notifications/instrumenter.rb, line 72
      def start!
        @time = now
        @cpu_time_start = now_cpu
        @allocation_count_start = now_allocations
      end
🔎 See on GitHub