Class: Hone::Profilers::StackProf

Inherits:
Base
  • Object
show all
Includes:
MethodMatching
Defined in:
lib/hone/profilers/stackprof.rb

Instance Method Summary collapse

Constructor Details

#initialize(profile_path) ⇒ StackProf

Returns a new instance of StackProf.



8
9
10
11
12
13
14
 
# File 'lib/hone/profilers/stackprof.rb', line 8

def initialize(profile_path)
  super

  # Prefer ruby_samples (excludes C frames) for more accurate Ruby percentages
  @total_samples = @data["ruby_samples"] || @data["samples"] || calculate_total_samples
  parse_frames
end

Instance Method Details

#cpu_percent_for(method_info) ⇒ Object

Returns CPU percentage for a method (0.0-100.0) method_info can be a Hash with :name and/or :file keys, or a String method name



18
19
20
21
22
23
 
# File 'lib/hone/profilers/stackprof.rb', line 18

def cpu_percent_for(method_info)
  frame = find_matching_frame(method_info)
  return nil unless frame

  frame[:cpu_percent]
end

#hotspots(threshold: 1.0) ⇒ Object

Returns array of HotspotInfo for frames above threshold



26
27
28
29
30
31
 
# File 'lib/hone/profilers/stackprof.rb', line 26

def hotspots(threshold: 1.0)
  @frames
    .select { |frame| frame[:cpu_percent] >= threshold }
    .sort_by { |frame| -frame[:cpu_percent] }
    .map { |frame| build_hotspot_info(frame) }
end