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Diffstat (limited to 'ruby_2_2/lib/profiler.rb')
| -rw-r--r-- | ruby_2_2/lib/profiler.rb | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/ruby_2_2/lib/profiler.rb b/ruby_2_2/lib/profiler.rb deleted file mode 100644 index e53951cbe6..0000000000 --- a/ruby_2_2/lib/profiler.rb +++ /dev/null @@ -1,148 +0,0 @@ -# Profile provides a way to Profile your Ruby application. -# -# Profiling your program is a way of determining which methods are called and -# how long each method takes to complete. This way you can detect which -# methods are possible bottlenecks. -# -# Profiling your program will slow down your execution time considerably, -# so activate it only when you need it. Don't confuse benchmarking with -# profiling. -# -# There are two ways to activate Profiling: -# -# == Command line -# -# Run your Ruby script with <code>-rprofile</code>: -# -# ruby -rprofile example.rb -# -# If you're profiling an executable in your <code>$PATH</code> you can use -# <code>ruby -S</code>: -# -# ruby -rprofile -S some_executable -# -# == From code -# -# Just require 'profile': -# -# require 'profile' -# -# def slow_method -# 5000.times do -# 9999999999999999*999999999 -# end -# end -# -# def fast_method -# 5000.times do -# 9999999999999999+999999999 -# end -# end -# -# slow_method -# fast_method -# -# The output in both cases is a report when the execution is over: -# -# ruby -rprofile example.rb -# -# % cumulative self self total -# time seconds seconds calls ms/call ms/call name -# 68.42 0.13 0.13 2 65.00 95.00 Integer#times -# 15.79 0.16 0.03 5000 0.01 0.01 Fixnum#* -# 15.79 0.19 0.03 5000 0.01 0.01 Fixnum#+ -# 0.00 0.19 0.00 2 0.00 0.00 IO#set_encoding -# 0.00 0.19 0.00 1 0.00 100.00 Object#slow_method -# 0.00 0.19 0.00 2 0.00 0.00 Module#method_added -# 0.00 0.19 0.00 1 0.00 90.00 Object#fast_method -# 0.00 0.19 0.00 1 0.00 190.00 #toplevel - -module Profiler__ - class Wrapper < Struct.new(:defined_class, :method_id, :hash) # :nodoc: - private :defined_class=, :method_id=, :hash= - - def initialize(klass, mid) - super(klass, mid, nil) - self.hash = Struct.instance_method(:hash).bind(self).call - end - - def to_s - "#{defined_class.inspect}#".sub(/\A\#<Class:(.*)>#\z/, '\1.') << method_id.to_s - end - alias inspect to_s - end - - # internal values - @@start = nil # the start time that profiling began - @@stacks = nil # the map of stacks keyed by thread - @@maps = nil # the map of call data keyed by thread, class and id. Call data contains the call count, total time, - PROFILE_CALL_PROC = TracePoint.new(*%i[call c_call b_call]) {|tp| # :nodoc: - now = Process.times[0] - stack = (@@stacks[Thread.current] ||= []) - stack.push [now, 0.0] - } - PROFILE_RETURN_PROC = TracePoint.new(*%i[return c_return b_return]) {|tp| # :nodoc: - now = Process.times[0] - key = Wrapper.new(tp.defined_class, tp.method_id) - stack = (@@stacks[Thread.current] ||= []) - if tick = stack.pop - threadmap = (@@maps[Thread.current] ||= {}) - data = (threadmap[key] ||= [0, 0.0, 0.0, key]) - data[0] += 1 - cost = now - tick[0] - data[1] += cost - data[2] += cost - tick[1] - stack[-1][1] += cost if stack[-1] - end - } -module_function - # Starts the profiler. - # - # See Profiler__ for more information. - def start_profile - @@start = Process.times[0] - @@stacks = {} - @@maps = {} - PROFILE_CALL_PROC.enable - PROFILE_RETURN_PROC.enable - end - # Stops the profiler. - # - # See Profiler__ for more information. - def stop_profile - PROFILE_CALL_PROC.disable - PROFILE_RETURN_PROC.disable - end - # Outputs the results from the profiler. - # - # See Profiler__ for more information. - def print_profile(f) - stop_profile - total = Process.times[0] - @@start - if total == 0 then total = 0.01 end - totals = {} - @@maps.values.each do |threadmap| - threadmap.each do |key, data| - total_data = (totals[key] ||= [0, 0.0, 0.0, key]) - total_data[0] += data[0] - total_data[1] += data[1] - total_data[2] += data[2] - end - end - - # Maybe we should show a per thread output and a totals view? - - data = totals.values - data = data.sort_by{|x| -x[2]} - sum = 0 - f.printf " %% cumulative self self total\n" - f.printf " time seconds seconds calls ms/call ms/call name\n" - for d in data - sum += d[2] - f.printf "%6.2f %8.2f %8.2f %8d ", d[2]/total*100, sum, d[2], d[0] - f.printf "%8.2f %8.2f %s\n", d[2]*1000/d[0], d[1]*1000/d[0], d[3] - end - f.printf "%6.2f %8.2f %8.2f %8d ", 0.0, total, 0.0, 1 # ??? - f.printf "%8.2f %8.2f %s\n", 0.0, total*1000, "#toplevel" # ??? - end -end |