ActiveSupport::Notifications::Event (original) (raw)

Methods

A

C

D

E

F

G

I

N

S

T

Attributes

[R] name
[RW] payload
[R] transaction_id

Class Public methods

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def initialize(name, start, ending, transaction_id, payload) @name = name @payload = payload.dup @time = start ? start.to_f * 1_000.0 : start @transaction_id = transaction_id @end = ending ? ending.to_f * 1_000.0 : ending @cpu_time_start = 0.0 @cpu_time_finish = 0.0 @allocation_count_start = 0 @allocation_count_finish = 0 @gc_time_start = 0 @gc_time_finish = 0 end

Instance Public methods

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

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def allocations @allocation_count_finish - @allocation_count_start end

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

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def cpu_time @cpu_time_finish - @cpu_time_start end

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

ActiveSupport::Notifications.subscribe('wait') do |event|
  @event = event
end

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

@event.duration # => 1000.138

Record information at the time this event finishes

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def finish! @cpu_time_finish = now_cpu @gc_time_finish = now_gc @end = now @allocation_count_finish = now_allocations end

Returns the time spent in GC (in milliseconds) between the call to start! and the call to finish!

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def gc_time (@gc_time_finish - @gc_time_start) / 1_000_000.0 end

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

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def idle_time diff = duration - cpu_time diff > 0.0 ? diff : 0.0 end

Record information at the time this event starts

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def start! @time = now @cpu_time_start = now_cpu @gc_time_start = now_gc @allocation_count_start = now_allocations end