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ruby--ruby/kernel.rb
Takashi Kokubun 946e5cc668
Annotate Kernel#class as inline (#3250)
```
$ benchmark-driver -v --rbenv 'before;after;before --jit;after --jit' benchmark/mjit_class.yml --repeat-count=4
before: ruby 2.8.0dev (2020-06-23T07:09:54Z master 37a2e48d76) [x86_64-linux]
after: ruby 2.8.0dev (2020-06-23T17:29:56Z inline-class 0ff147c007) [x86_64-linux]
before --jit: ruby 2.8.0dev (2020-06-23T07:09:54Z master 37a2e48d76) +JIT [x86_64-linux]
after --jit: ruby 2.8.0dev (2020-06-23T17:29:56Z inline-class 0ff147c007) +JIT [x86_64-linux]
Calculating -------------------------------------
                         before       after  before --jit  after --jit
    mjit_class(self)    39.219M     40.060M       53.502M      69.202M i/s -     40.000M times in 1.019915s 0.998495s 0.747631s 0.578021s
       mjit_class(1)    39.567M     41.242M       52.100M      68.895M i/s -     40.000M times in 1.010935s 0.969885s 0.767749s 0.580591s

Comparison:
                 mjit_class(self)
         after --jit:  69201690.7 i/s
        before --jit:  53502336.4 i/s - 1.29x  slower
               after:  40060289.1 i/s - 1.73x  slower
              before:  39218939.2 i/s - 1.76x  slower

                    mjit_class(1)
         after --jit:  68895358.6 i/s
        before --jit:  52100353.0 i/s - 1.32x  slower
               after:  41241993.6 i/s - 1.67x  slower
              before:  39567314.0 i/s - 1.74x  slower
```
2020-06-23 23:49:03 -07:00

74 lines
2.4 KiB
Ruby

module Kernel
#
# call-seq:
# obj.class -> class
#
# Returns the class of <i>obj</i>. This method must always be called
# with an explicit receiver, as #class is also a reserved word in
# Ruby.
#
# 1.class #=> Integer
# self.class #=> Object
#--
# Equivalent to \c Object\#class in Ruby.
#
# Returns the class of \c obj, skipping singleton classes or module inclusions.
#++
#
def class
Primitive.attr! 'inline'
Primitive.cexpr! 'rb_obj_class(self)'
end
#
# call-seq:
# obj.clone(freeze: nil) -> an_object
#
# Produces a shallow copy of <i>obj</i>---the instance variables of
# <i>obj</i> are copied, but not the objects they reference.
# #clone copies the frozen value state of <i>obj</i>, unless the
# +:freeze+ keyword argument is given with a false or true value.
# See also the discussion under Object#dup.
#
# class Klass
# attr_accessor :str
# end
# s1 = Klass.new #=> #<Klass:0x401b3a38>
# s1.str = "Hello" #=> "Hello"
# s2 = s1.clone #=> #<Klass:0x401b3998 @str="Hello">
# s2.str[1,4] = "i" #=> "i"
# s1.inspect #=> "#<Klass:0x401b3a38 @str=\"Hi\">"
# s2.inspect #=> "#<Klass:0x401b3998 @str=\"Hi\">"
#
# This method may have class-specific behavior. If so, that
# behavior will be documented under the #+initialize_copy+ method of
# the class.
#
def clone(freeze: nil)
Primitive.rb_obj_clone2(freeze)
end
module_function
#
# call-seq:
# Float(arg, exception: true) -> float or nil
#
# Returns <i>arg</i> converted to a float. Numeric types are
# converted directly, and with exception to String and
# <code>nil</code> the rest are converted using
# <i>arg</i><code>.to_f</code>. Converting a String with invalid
# characters will result in a ArgumentError. Converting
# <code>nil</code> generates a TypeError. Exceptions can be
# suppressed by passing <code>exception: false</code>.
#
# Float(1) #=> 1.0
# Float("123.456") #=> 123.456
# Float("123.0_badstring") #=> ArgumentError: invalid value for Float(): "123.0_badstring"
# Float(nil) #=> TypeError: can't convert nil into Float
# Float("123.0_badstring", exception: false) #=> nil
#
def Float(arg, exception: true)
Primitive.rb_f_float(arg, exception)
end
end