timer.rb

Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 经过两年开发后

#
# This file defines a $log variable for logging, and a time() method for recording timing
# information.
#
#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++


$log = Object.new
def $log.debug(str)
  STDERR.puts str
end

def time(msg, width=25)
  t = Time.now
  return_value = yield
  elapsed = Time.now.to_f - t.to_f
  elapsed = sprintf("%3.3f", elapsed)
  $log.debug "#{msg.ljust(width)}: #{elapsed}s"
  return_value
end