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require 'benchmark'
$max_trial = 10
def bm msg
real = (1..$max_trial).map{
Benchmark.measure{
yield
}.real
}.min
puts "#{msg}\t#{real}"
real
end
def bench1
max = 10_000_000
cm = bm 'c-method' do
max.times{
null_func()
}
end
ri = bm 'ricsin' do
max.times{
__C__('')
}
end
lo = bm 'loop' do
max.times{
}
end
puts [cm-lo, ri-lo].join("\t")
end
__Cdecl__ %q{
#define FIX_PP(i) i += 2
#define FIX_CMP_LT(x, y) ((SIGNED_VALUE)(x) < (SIGNED_VALUE)(y))
}
class Array
def each_ricsin
return self.enum_for(:each) unless block_given?
i = 0
e = nil
#C for (; FIX2LONG(i) < RARRAY_LEN(self); FIX_PP(i)) {
#C e = RARRAY_PTR(self)[FIX2LONG(i)];
yield e
#C }
self
end
def each_ruby
i = 0
while i < self.length
yield self[i]
i = i.succ
end
end
end
class Fixnum
alias each times
def each_ricsin
return self.enum_for(:times) unless block_given?
i = 0
#C for (; FIX_CMP_LT(i, self); FIX_PP(i)) {
yield i
#C }
i
end
def each_ruby
i = 0
while i < self
yield i
i = i.succ
end
i
end
end
class Range
def each_ricsin
return self.enum_for(:each) unless block_given?
i = self.first
e = self.last
e += 1 unless self.exclude_end?
#C for (; FIX_CMP_LT(i, e); FIX_PP(i)) {
yield(i)
#C }
self
end
def each_ruby
i = self.first
e = self.last
e += 1 if self.exclude_end?
while i<e
yield
i = i.succ
end
self
end
end
def bench2
max = 10_000_000
[[Array.new(max), :each], [(1..max), :each], [max, :times]].each{|obj, mid|
begin
bm 'cfunc' do
obj.each{}
end
bm 'ricsin' do
obj.each_ricsin{}
end
bm 'ruby' do
obj.each_ruby{}
end
bm 'cfunc+cb' do
obj.each(&__Cb__(''))
end
bm 'ricsin+cb' do
obj.each_ricsin(&__Cb__(''))
end
bm 'ruby+cb' do
obj.each_ruby(&__Cb__(''))
end
ensure
#
end
}
end
#bench1()
bench2()
__END__
###
require 'benchmark'
max = 10000000
obj = Array.new(max)
Benchmark.bm{|x|
x.report("orig "){
obj.each{|e|}
}
x.report("ricsin"){
obj.each2{|e|}
}
x.report("pure "){
obj.each3{|e|}
}
} if false
obj = (1..max)
Benchmark.bm{|x|
x.report("orig "){
obj.each{|e|}
}
x.report("ricsin"){
obj.each2{|e|}
}
x.report("pure "){
obj.each3{|e|}
}
} if false
Benchmark.bm{|x|
x.report("orig "){
max.times{|i|}
}
x.report("ricsin"){
max.times2{|i|}
}
x.report("pure "){
max.times3{|i|}
}
x.report("cblock"){
max.times(&__Cb__(""))
}
x.report("cblock"){
max.times2(&__Cb__(""))
}
x.report("cblock"){
max.times3(&__Cb__(""))
}
}
__END__
ruby 1.9.0 (2008-09-19 revision 0) [i686-linux]
user system total real
orig 2.860000 0.000000 2.860000 ( 2.864203)
ricsin 2.160000 0.000000 2.160000 ( 2.161214)
pure 5.130000 0.000000 5.130000 ( 5.138235)
user system total real
orig 2.810000 0.000000 2.810000 ( 2.822292)
ricsin 2.070000 0.000000 2.070000 ( 2.066880)
pure 2.790000 0.000000 2.790000 ( 2.787441)
user system total real
orig 2.700000 0.000000 2.700000 ( 2.697477)
ricsin 2.070000 0.000000 2.070000 ( 2.078570)
pure 2.800000 0.000000 2.800000 ( 2.794948)
ruby 1.9.0 (2008-09-20 revision 12) [x86_64-linux]
user system total real
orig 0.830000 0.000000 0.830000 ( 0.825043)
ricsin 0.540000 0.010000 0.550000 ( 0.545134)
pure 1.310000 0.000000 1.310000 ( 1.313828)
user system total real
orig 0.850000 0.000000 0.850000 ( 0.855513)
ricsin 0.560000 0.000000 0.560000 ( 0.554663)
pure 0.660000 0.000000 0.660000 ( 0.663112)
user system total real
orig 0.860000 0.000000 0.860000 ( 0.854639)
ricsin 0.540000 0.000000 0.540000 ( 0.547628)
pure 0.790000 0.000000 0.790000 ( 0.787023)
Benchmark.bm{|x|
x.report("orig "){
max.times{|i|}
}
x.report("ricsin"){
max.times2{|i|}
}
x.report("pure "){
max.times3{|i|}
}
x.report("cblock"){
max.times(&__Cb__(""))
}
x.report("cblock"){
max.times2(&__Cb__(""))
}
x.report("cblock"){
max.times3(&__Cb__(""))
}
}
user system total real
orig 2.760000 0.000000 2.760000 ( 2.757706)
ricsin 2.230000 0.000000 2.230000 ( 2.236137)
pure 3.130000 0.000000 3.130000 ( 3.159513)
cblock 1.000000 0.000000 1.000000 ( 1.004778)
cblock 1.960000 0.000000 1.960000 ( 1.963191)
cblock 2.740000 0.000000 2.740000 ( 2.747436)
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