32 lines
479 B
Go
32 lines
479 B
Go
package main
|
|
|
|
import (
|
|
"strings"
|
|
"testing"
|
|
"unsafe"
|
|
)
|
|
|
|
// go test -bench=. creation_test.go
|
|
|
|
func makeDirty(size int) []byte {
|
|
var sb strings.Builder
|
|
sb.Grow(size)
|
|
|
|
pointer := unsafe.StringData(sb.String())
|
|
return unsafe.Slice(pointer, size)
|
|
}
|
|
|
|
var Result []byte
|
|
|
|
func BenchmarkMake(b *testing.B) {
|
|
for i := 0; i < b.N; i++ {
|
|
Result = make([]byte, 0, 10<<20)
|
|
}
|
|
}
|
|
|
|
func BenchmarkMakeDirty(b *testing.B) {
|
|
for i := 0; i < b.N; i++ {
|
|
Result = makeDirty(10 << 20)
|
|
}
|
|
}
|