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脚本如下,设置可随意更改,打印完美输出。
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- #encoding:utf-8
- #==============================================================================
- # ■ Benchmark v1.0 By QQEat
- #------------------------------------------------------------------------------
- # 基准测试(优雅 + 完美强迫症打印)
- #==============================================================================
- #
- # # 打印代码块执行时间(count 默认 1, 可在下面设置更改)
- # Benchmark.measure(count){|r| ... }
- #
- # # 测试代码快效率
- # Benchmark.measure(10_000) { [*1..1000].shuffle }
- #
- # # 汇报打印
- # Benchmark.measure do |x|
- # a = (1..100).to_a.shuffle!
- # x.report('Array#sort', 100000) { a.sort }
- # x.report('Array#sort!', 100000) { a.sort! }
- # 10.times{ x.report{ a.sort! } }
- # end
- #
- module Benchmark
- #--------------------------------------------------------------------------
- # ● 常量
- #--------------------------------------------------------------------------
- ITERATIONS = 1 # 默认执行次数
- MARGIN = 3 # 列间距
- SPLIT_LINE = true # 是否显示列分割线
- COLS = [
- [7, '#', :R],
- [10, 'user', :R], # 用户时间
- [10, 'system', :R], # 系统时间
- [10, 'real', :R], # 真实用时
- [10, 'avg', :R], # 平均用时
- [10, 'times', :R], # 执行次数
- ].map.with_index{|v, i|
- [v[0], v[1].send(v[2] == :L ? :ljust : :rjust, v[0]) + ' ' * MARGIN, v[2]]
- } # [列宽, 列名, 对齐方向]
-
- #==============================================================================
- # ■ Reporter
- #==============================================================================
- class Reporter
- #--------------------------------------------------------------------------
- # ● 初始化
- #--------------------------------------------------------------------------
- def initialize
- @total = [0, 0, 0, 0]
- end
- #--------------------------------------------------------------------------
- # ● 汇报执行(标签名, 执行次数)
- #--------------------------------------------------------------------------
- def report(label = nil, iterate = ITERATIONS)
- result = Benchmark.send(:time, iterate) { yield }
- result << result[-1] / iterate
- Benchmark.send(:output, label, *result.map{|v| '%0.6f' % v }, iterate)
- @total.map!.with_index { |t, i| t += result[i].to_f }
- end
- end
- #--------------------------------------------------------------------------
- # ● measure 测量脚本执行时间
- #--------------------------------------------------------------------------
- def self.measure(iterate = ITERATIONS, &block)
- @row = 0
- width = COLS.inject(0){|a,b| a+b[1].length } / 2 - 5
- puts "#{'-'*width} BENCHMARK #{'-'*width}"
- puts COLS.map{|v| v[1] }.join
- reporter = Reporter.new
- if block.arity == 0
- result = time(iterate) { yield }
- else
- yield reporter
- result = reporter.instance_variable_get(:@total)
- end
- print "\n"
- output('Total', *result.map{|v| '%0.6f' % v }, '')
- print "\n"
- end
-
- class << self
- private
- #--------------------------------------------------------------------------
- # ● 执行脚本(执行次数)
- # return:[用户时间, 系统时间, 真实时间]
- #--------------------------------------------------------------------------
- def time(iterate = ITERATIONS)
- t = Process.times
- initial = [t.utime, t.stime, Time.now]
- iterate.times { yield }
- t2 = Process.times
- [t2.utime, t2.stime, Time.now].map!.with_index do |time, index|
- time - initial[index]
- end
- end
- #--------------------------------------------------------------------------
- # ● 打印输出
- #--------------------------------------------------------------------------
- def output(*args)
- args[-1] = args[-1].to_s.gsub(/(?=(?!\b)(\d{3})+$)/, ',')
- (args[0] ||= @row.to_s) << ':'
- args.map!.with_index{|v,i| v.to_s.scan(/.{1,#{COLS[i][0]}}/) }
- row = args.max_by{|v| v.length }.length
- row.times do |i|
- bottom = i == row-1
- args.each_with_index do |arr, n|
- begin_ = n == 0
- end_ = n == args.length - 1
- col = COLS[n]
- diff = args[0].length - arr.length
- diff = 0 if diff < 0
- str = (i < diff ? '' : arr[i-diff]) || ''
- str = str.send(col[2] == :L ? :ljust : :rjust, col[0])
- if SPLIT_LINE and !end_
- hmar = (MARGIN - 1) / 2
- str << ' ' * hmar << '|' << ' ' * (MARGIN - hmar - 1)
- else
- str << ' ' * MARGIN
- end
- str << "\n" if end_
- print str
- end
- end
- @row += 1
- end
- end
- end
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