1// Copyright 2017 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package runtime_test
6
7import (
8	. "runtime"
9	"strconv"
10	"testing"
11)
12
13func BenchmarkFastrand(b *testing.B) {
14	b.RunParallel(func(pb *testing.PB) {
15		for pb.Next() {
16			Fastrand()
17		}
18	})
19}
20
21func BenchmarkFastrandHashiter(b *testing.B) {
22	var m = make(map[int]int, 10)
23	for i := 0; i < 10; i++ {
24		m[i] = i
25	}
26	b.RunParallel(func(pb *testing.PB) {
27		for pb.Next() {
28			for range m {
29				break
30			}
31		}
32	})
33}
34
35var sink32 uint32
36
37func BenchmarkFastrandn(b *testing.B) {
38	for n := uint32(2); n <= 5; n++ {
39		b.Run(strconv.Itoa(int(n)), func(b *testing.B) {
40			for i := 0; i < b.N; i++ {
41				sink32 = Fastrandn(n)
42			}
43		})
44	}
45}
46