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author | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-31 12:30:57 +0000 |
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committer | watson1978 <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-31 12:30:57 +0000 |
commit | d0015e4ac6b812ea1681b1f5fa86fbab52a58960 (patch) | |
tree | 1a83c7c7e483e8fcdce1c14b87725837fe9d894e /rational.c | |
parent | cc50ed4a5044133ef1ef79d31aa7d850bf3ca83b (diff) |
Improve performance of implicit type conversion
To convert the object implicitly, it has had two parts in convert_type() which are
1. lookink up the method's id
2. calling the method
Seems that strncmp() and strcmp() in convert_type() are slightly heavy to look up
the method's id for type conversion.
This patch will add and use internal APIs (rb_convert_type_with_id, rb_check_convert_type_with_id)
to call the method without looking up the method's id when convert the object.
Array#flatten -> 19 % up
Array#+ -> 3 % up
[ruby-dev:50024] [Bug #13341] [Fix GH-1537]
### Before
Array#flatten 104.119k (± 1.1%) i/s - 525.690k in 5.049517s
Array#+ 1.993M (± 1.8%) i/s - 10.010M in 5.024258s
### After
Array#flatten 124.005k (± 1.0%) i/s - 624.240k in 5.034477s
Array#+ 2.058M (± 4.8%) i/s - 10.302M in 5.019328s
### Test Code
require 'benchmark/ips'
class Foo
def to_ary
[1,2,3]
end
end
Benchmark.ips do |x|
ary = []
100.times { |i| ary << i }
array = [ary]
x.report "Array#flatten" do |i|
i.times { array.flatten }
end
x.report "Array#+" do |i|
obj = Foo.new
i.times { array + obj }
end
end
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58978 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'rational.c')
-rw-r--r-- | rational.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/rational.c b/rational.c index bd32399e79..ce95facda0 100644 --- a/rational.c +++ b/rational.c @@ -6,6 +6,7 @@ */ #include "internal.h" +#include "id.h" #include <math.h> #include <float.h> @@ -2610,7 +2611,7 @@ nurat_s_convert(int argc, VALUE *argv, VALUE klass) if (argc == 1) { if (!(k_numeric_p(a1) && k_integer_p(a1))) - return rb_convert_type(a1, T_RATIONAL, "Rational", "to_r"); + return rb_convert_type_with_id(a1, T_RATIONAL, "Rational", idTo_r); } else { if ((k_numeric_p(a1) && k_numeric_p(a2)) && |