vfn-inteface.go

package main

import (
	"context"
	"testing"
)

type Iface interface {
	F(ctx context.Context) error
}

type IfTest struct {}

func (i *IfTest) F(ctx context.Context) error {
	return nil
}

type FuncTest struct {
	Fn func(ctx context.Context) error
}

func ee(ctx context.Context) error {
	return nil
}

func BenchmarkCallFn(b *testing.B) {
	ff := &FuncTest{Fn: ee}
	c := context.Background()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		ff.Fn(c)
	}
}

func BenchmarkCallInterface(b *testing.B) {
	var ii Iface = &IfTest{}
	c := context.Background()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		ii.F(c)
	}
}

goos: linux
goarch: amd64
pkg: github.com/pingcap/tidb/plugin/conn_ip_example
BenchmarkCallInterface-8 1000000000 3.03 ns/op
BenchmarkCallFn-8 1000000000 2.71 ns/op
PASS