Class: Profiler

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

Constant Summary collapse

INDENT = 
"  "

Class Attribute Summary collapse

Class Method Summary collapse

Class Attribute Details

.measurements ⇒ Object (readonly)

Returns the value of attribute measurements.



9
10
11
 
# File 'lib/profiler.rb', line 9

def measurements
  @measurements
end

Class Method Details

.add_measurement(tag, seconds) ⇒ Object 



19
20
21
22
23
24
25
 
# File 'lib/profiler.rb', line 19

def add_measurement(tag, seconds)
  return unless profiling?

  @measurements[tag] ||= []

  @measurements[tag] << seconds
end

.measure(tag) ⇒ Object 



11
12
13
14
15
16
17
 
# File 'lib/profiler.rb', line 11

def measure(tag)
  start = time_now
  result = yield
  add_measurement(tag, time_now - start)

  result
end

.profiling? ⇒ Boolean 



39
40
41
 
# File 'lib/profiler.rb', line 39

def profiling?
  !ENV["OPS_PROFILE"].nil?
end

.summary ⇒ Object 



27
28
29
30
31
32
33
34
35
36
37
 
# File 'lib/profiler.rb', line 27

def summary
  return unless profiling?

  @summary ||= measurements.reverse_each.each_with_object([]) do |(tag, values), output|
    output << "#{tag}:\n"
    values.sort.reverse.each do |value|
      value_str = format("%.3f", value * 1000)
      output << format("%<indent>s%9<value>sms\n", indent: INDENT, value: value_str)
    end
  end.join
end

.time_now ⇒ Object 



43
44
45
 
# File 'lib/profiler.rb', line 43

def time_now
  Process.clock_gettime(Process::CLOCK_MONOTONIC)
end