dhrand is a Golang package that exports a LockedSource similar to golang.org/x/exp/rand
2020/01/05 - Go 1.13
$ go test -v -bench . -benchmem -run Bench
goos: darwin
goarch: amd64
pkg: github.com/dhui/dhrand
Benchmark/default1-8 123336901 9.74 ns/op 0 B/op 0 allocs/op
Benchmark/default4-8 79965352 15.7 ns/op 0 B/op 0 allocs/op
Benchmark/default8-8 54513741 22.1 ns/op 0 B/op 0 allocs/op
Benchmark/default16-8 32836630 37.2 ns/op 0 B/op 0 allocs/op
Benchmark/default32-8 17189065 67.1 ns/op 0 B/op 0 allocs/op
Benchmark/default64-8 9563968 122 ns/op 0 B/op 0 allocs/op
Benchmark/default128-8 5211151 234 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand1-8 60485150 18.0 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand4-8 23568386 47.2 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand8-8 14561524 83.0 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand16-8 8338760 141 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand32-8 4525593 277 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand64-8 2379886 524 ns/op 0 B/op 0 allocs/op
Benchmark/dhrand128-8 1212876 976 ns/op 0 B/op 0 allocs/op
BenchmarkModule/1-8 49203238 24.8 ns/op 0 B/op 0 allocs/op
BenchmarkModule/4-8 45214652 25.9 ns/op 0 B/op 0 allocs/op
BenchmarkModule/8-8 39749751 30.2 ns/op 0 B/op 0 allocs/op
BenchmarkModule/16-8 28504729 43.3 ns/op 0 B/op 0 allocs/op
BenchmarkModule/32-8 18041762 67.4 ns/op 0 B/op 0 allocs/op
BenchmarkModule/64-8 9782745 124 ns/op 0 B/op 0 allocs/op
BenchmarkModule/128-8 5699034 212 ns/op 0 B/op 0 allocs/op
PASS
ok github.com/dhui/dhrand 29.481s