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|
package asciiset
import (
"testing"
"unicode/utf8"
)
// prevent compiler from erroneously optimising benchmark computations
var globalExists bool
var globalSize int
var globalVal byte
// Number of sets
const N int = 10
// setupASCIISets returns an ASCIISet slice of size n where
// each ASCIISet is empty
//
// if populate is true, fill each set with every 2nd ASCII character
func setupASCIISets(n int, populate bool) []ASCIISet {
sets := []ASCIISet{}
for i := 0; i < n; i++ {
var as ASCIISet
if populate {
for c := 0; c < utf8.RuneSelf; c += 2 {
// add every 2nd ASCII character
as.Add(byte(c))
}
}
sets = append(sets, as)
}
return sets
}
// setupMapSets returns a map[byte]struct{} slice of size n where
// each map[byte]struct{} is empty
//
// if populate is true, fill each set with every 2nd ASCII character
func setupMapSets(n int, populate bool) []map[byte]struct{} {
sets := []map[byte]struct{}{}
for i := 0; i < n; i++ {
as := make(map[byte]struct{})
if populate {
for c := 0; c < utf8.RuneSelf; c += 2 {
// add every 2nd ASCII character
as[byte(c)] = struct{}{}
}
}
sets = append(sets, as)
}
return sets
}
func BenchmarkASCIISet(b *testing.B) {
b.Run("ASCIISet Add()", func(b *testing.B) {
sets := setupASCIISets(N, false)
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c += 2 {
// add every 2nd ASCII character
as.Add(c)
}
}
}
})
b.Run("ASCIISet Contains()", func(b *testing.B) {
sets := setupASCIISets(N, true)
var exists bool
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c++ {
exists = as.Contains(c)
}
}
}
globalExists = exists
})
b.Run("ASCIISet Remove()", func(b *testing.B) {
sets := setupASCIISets(N, true)
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c++ {
as.Remove(c)
}
}
}
})
b.Run("ASCIISet Size()", func(b *testing.B) {
sets := setupASCIISets(N, true)
var size int
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c++ {
size = as.Size()
}
}
}
globalSize = size
})
b.Run("ASCIISet Visit()", func(b *testing.B) {
sets := setupASCIISets(N, true)
var val byte
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
as.Visit(func(c byte) bool {
val = c
return false
})
}
}
globalVal = val
})
}
func BenchmarkMapSet(b *testing.B) {
b.Run("map Add", func(b *testing.B) {
sets := setupMapSets(N, false)
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c += 2 {
// add every 2nd ASCII character
as[c] = struct{}{}
}
}
}
})
b.Run("map Contains", func(b *testing.B) {
sets := setupMapSets(N, true)
var exists bool
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c++ {
_, exists = as[c]
}
}
}
globalExists = exists
})
b.Run("map Remove", func(b *testing.B) {
sets := setupMapSets(N, true)
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c++ {
delete(as, c)
}
}
}
})
b.Run("map Size", func(b *testing.B) {
sets := setupMapSets(N, true)
var size int
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := byte(0); c < utf8.RuneSelf; c++ {
size = len(as)
}
}
}
globalSize = size
})
b.Run("map Visit", func(b *testing.B) {
sets := setupMapSets(N, true)
var val byte
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, as := range sets {
for c := range as {
val = c
}
}
}
globalVal = val
})
}
|
