72 lines
1.8 KiB
Bash
Executable File
72 lines
1.8 KiB
Bash
Executable File
#!/usr/bin/env ruby
|
|
# Example:
|
|
# tools/profile activesupport/lib/active_support.rb
|
|
ENV['NO_RELOAD'] ||= '1'
|
|
ENV['RAILS_ENV'] ||= 'development'
|
|
|
|
require 'benchmark'
|
|
|
|
module RequireProfiler
|
|
private
|
|
def require(file, *args) RequireProfiler.profile(file) { super } end
|
|
def load(file, *args) RequireProfiler.profile(file) { super } end
|
|
|
|
@depth, @stats = 0, []
|
|
class << self
|
|
attr_accessor :depth
|
|
attr_accessor :stats
|
|
|
|
def profile(file)
|
|
stats << [file, depth]
|
|
self.depth += 1
|
|
result = nil
|
|
elapsed = Benchmark.realtime { result = yield }
|
|
self.depth -= 1
|
|
stats.pop if stats.last.first == file
|
|
stats << [file, depth, elapsed] if result
|
|
result
|
|
end
|
|
end
|
|
end
|
|
|
|
GC.start
|
|
before_rss = `ps -o rss= -p #{Process.pid}`.to_i
|
|
|
|
path = ARGV.shift
|
|
if mode = ARGV.shift
|
|
require 'ruby-prof'
|
|
RubyProf.measure_mode = RubyProf.const_get(mode.upcase)
|
|
RubyProf.start
|
|
else
|
|
Object.instance_eval { include RequireProfiler }
|
|
end
|
|
|
|
elapsed = Benchmark.realtime { require path }
|
|
results = RubyProf.stop if mode
|
|
|
|
GC.start
|
|
after_rss = `ps -o rss= -p #{Process.pid}`.to_i
|
|
|
|
if mode
|
|
if printer = ARGV.shift
|
|
RubyProf.const_get("#{printer.to_s.classify}Printer").new(results).print($stdout)
|
|
elsif RubyProf.const_defined?(:CallStackPrinter)
|
|
File.open("#{File.basename(path, '.rb')}.#{mode}.html", 'w') do |out|
|
|
RubyProf::CallStackPrinter.new(results).print(out)
|
|
end
|
|
else
|
|
File.open("#{File.basename(path, '.rb')}.#{mode}.callgrind", 'w') do |out|
|
|
RubyProf::CallTreePrinter.new(results).print(out)
|
|
end
|
|
end
|
|
end
|
|
|
|
RequireProfiler.stats.each do |file, depth, sec|
|
|
if sec
|
|
puts "%8.1f ms %s%s" % [sec * 1000, ' ' * depth, file]
|
|
else
|
|
puts "#{' ' * (13 + depth)}#{file}"
|
|
end
|
|
end
|
|
puts "%8.1f ms %d KB RSS" % [elapsed * 1000, after_rss - before_rss]
|