Module: Timer

Defined in:
lib/imsg-grep/dev/timer.rb

Overview

Simple timer for profiling with lap times and progress bars

Class Method Summary collapse

Class Method Details

.finish ⇒ Object

Display final timing report with bars and percentages



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# File 'lib/imsg-grep/dev/timer.rb', line 25

def self.finish
  max_lap_time = @laps.map { |lap| lap[:time] }.max
  longest_line = @laps.map { |lap| lap[:line].length }.max
  start_col = longest_line + 3
  @laps.reverse.each do |lap|
    pct = "%4.1f" % (lap[:time] / @total_time * 100)
    bar_length = (lap[:time] / max_lap_time * 20).round
    bar = "█" * bar_length + "░" * (20 - bar_length)
    padding = " " * [0, start_col - lap[:line].length].max
    $stderr.print "\e[#{@laps.size - lap[:line_num]}A\r#{lap[:line]}#{padding}#{bar} #{pct}%\e[#{@laps.size - lap[:line_num]}B\r"
  end
  $stderr.puts
end

.lap(msg) ⇒ Object

Record lap time with message



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# File 'lib/imsg-grep/dev/timer.rb', line 14

def self.lap(msg)
  now = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  lap_time = (now - @last_lap) * 1000
  @total_time += lap_time
  line = "%5.0fms / %5.0fms: #{msg}" % [lap_time, @total_time]
  $stderr.puts line
  @laps << { msg: msg, time: lap_time, line: line, line_num: @laps.size }
  @last_lap = now
end

.start ⇒ Object

Initialize timer state



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# File 'lib/imsg-grep/dev/timer.rb', line 6

def self.start
  @t0 = Process.clock_gettime(Process::CLOCK_MONOTONIC)
  @last_lap = @t0
  @total_time = 0.0
  @laps = []
end