Ruby » Ruby master

• lib/delegate.rb: Remove backtrace cleaning for delegated methods
  This patch was provided by Rafael França and greatly improves
  performance when an exception is raised. [Bug #11461]

  Before:
  Calculating -------------------------------------
  default 86.209k i/100ms
  default raising 2.209k i/100ms

         default      1.953M (±11.0%) i/s -      9.655M
  

  default raising 21.826k (±13.5%) i/s - 108.241k

  After:
  Calculating -------------------------------------
  default 72.211k i/100ms
  default raising 34.288k i/100ms

         default      2.013M (±18.7%) i/s -      9.460M
  

  default raising 623.950k (± 9.7%) i/s - 3.120M

  Benchmark:
  require 'delegate'
  require 'benchmark/ips'

  class Foo
  def name
  'foo'
  end

  def bla
    raise
  end
  

  end

  class Bar < DelegateClass(Foo)
  end

  bar = Bar.new(Foo.new)

  Benchmark.ips do |b|
  b.report('default') { bar.name }
  b.report('default raising') { bar.bla rescue nil }
  end

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51806 b2dd03c8-39d4-4d8f-98ff-823fe69b080e