1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
require "./lib/contracts"
require "benchmark"
require "rubygems"
require "method_profiler"
require "ruby-prof"
include Contracts
def add opts
opts[:a] + opts[:b]
end
Contract ({ :a => Num, :b => Num}) => Num
def contracts_add opts
opts[:a] + opts[:b]
end
def explicit_add opts
a = opts[:a]
b = opts[:b]
fail unless a.is_a?(Numeric)
fail unless b.is_a?(Numeric)
c = a + b
fail unless c.is_a?(Numeric)
c
end
def benchmark
Benchmark.bm 30 do |x|
x.report "testing add" do
1_000_000.times do |_|
add(:a => rand(1000), :b => rand(1000))
end
end
x.report "testing contracts add" do
1_000_000.times do |_|
contracts_add(:a => rand(1000), :b => rand(1000))
end
end
end
end
def profile
profilers = []
profilers << MethodProfiler.observe(Contract)
profilers << MethodProfiler.observe(Object)
profilers << MethodProfiler.observe(Contracts::MethodDecorators)
profilers << MethodProfiler.observe(Contracts::Decorator)
profilers << MethodProfiler.observe(Contracts::Support)
profilers << MethodProfiler.observe(UnboundMethod)
10_000.times do |_|
contracts_add(:a => rand(1000), :b => rand(1000))
end
profilers.each { |p| puts p.report }
end
def ruby_prof
RubyProf.start
100_000.times do |_|
contracts_add(:a => rand(1000), :b => rand(1000))
end
result = RubyProf.stop
printer = RubyProf::FlatPrinter.new(result)
printer.print(STDOUT)
end
benchmark
profile
ruby_prof if ENV["FULL_BENCH"] # takes some time
|
