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
70
71
72
73
74
75
76
77
|
require_relative 'bench_helper'
module BenchStructField
iter = ITER
class TestStruct < FFI::Struct
layout :i, :int, :p, :pointer
end
s = TestStruct.new(FFI::MemoryPointer.new(TestStruct))
puts "Benchmark FFI Struct.get(:int) performance, #{iter}x"
10.times {
puts Benchmark.measure {
i = 0; max = iter / 4; while i < max
s[:i]
s[:i]
s[:i]
s[:i]
i += 1
end
}
}
puts "Benchmark FFI Struct.put(:int) performance, #{iter}x"
10.times {
puts Benchmark.measure {
i = 0; max = iter / 4; while i < max
s[:i] = 0x12345678
s[:i] = 0x12345678
s[:i] = 0x12345678
s[:i] = 0x12345678
i += 1
end
}
}
puts "Benchmark FFI Struct.get(:pointer) performance, #{iter}x"
10.times {
puts Benchmark.measure {
i = 0; max = iter / 4; while i < max
s[:p]
s[:p]
s[:p]
s[:p]
i += 1
end
}
}
puts "Benchmark FFI Struct.put(:pointer) performance, #{iter}x"
10.times {
p = FFI::MemoryPointer.new :int
puts Benchmark.measure {
i = 0; max = iter / 4; while i < max
s[:p] = p
s[:p] = p
s[:p] = p
s[:p] = p
i += 1
end
}
}
puts "Benchmark FFI Struct.get(:string) performance, #{iter}x"
class StringStruct < FFI::Struct
layout :s, :string
end
10.times {
mp = FFI::MemoryPointer.new 1024
mp.put_string(0, "Hello, World")
s = StringStruct.new
s.pointer.put_pointer(0, mp)
puts Benchmark.measure {
i = 0; while i < iter
s[:s]
i += 1
end
}
}
end
|
