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
|
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package runtime_test
import (
"testing"
)
func BenchmarkCompareStringEqual(b *testing.B) {
bytes := []byte("Hello Gophers!")
s1, s2 := string(bytes), string(bytes)
for i := 0; i < b.N; i++ {
if s1 != s2 {
b.Fatal("s1 != s2")
}
}
}
func BenchmarkCompareStringIdentical(b *testing.B) {
s1 := "Hello Gophers!"
s2 := s1
for i := 0; i < b.N; i++ {
if s1 != s2 {
b.Fatal("s1 != s2")
}
}
}
func BenchmarkCompareStringSameLength(b *testing.B) {
s1 := "Hello Gophers!"
s2 := "Hello, Gophers"
for i := 0; i < b.N; i++ {
if s1 == s2 {
b.Fatal("s1 == s2")
}
}
}
func BenchmarkCompareStringDifferentLength(b *testing.B) {
s1 := "Hello Gophers!"
s2 := "Hello, Gophers!"
for i := 0; i < b.N; i++ {
if s1 == s2 {
b.Fatal("s1 == s2")
}
}
}
func BenchmarkCompareStringBigUnaligned(b *testing.B) {
bytes := make([]byte, 0, 1<<20)
for len(bytes) < 1<<20 {
bytes = append(bytes, "Hello Gophers!"...)
}
s1, s2 := string(bytes), "hello"+string(bytes)
for i := 0; i < b.N; i++ {
if s1 != s2[len("hello"):] {
b.Fatal("s1 != s2")
}
}
b.SetBytes(int64(len(s1)))
}
func BenchmarkCompareStringBig(b *testing.B) {
bytes := make([]byte, 0, 1<<20)
for len(bytes) < 1<<20 {
bytes = append(bytes, "Hello Gophers!"...)
}
s1, s2 := string(bytes), string(bytes)
for i := 0; i < b.N; i++ {
if s1 != s2 {
b.Fatal("s1 != s2")
}
}
b.SetBytes(int64(len(s1)))
}
|
