Benchmark of Tengo VM callable args allocation

bechmark_test.go

package tengo_test

import (
	"testing"

	"github.com/d5/tengo/v2"
)

func BenchmarkCallAlloc(b *testing.B) {
	scriptNoArg := `
for i := 0; i < N; i++ {
	callable()
}
`
	script1Arg := `
for i := 0; i < N; i++ {
	callable(i)
}
`
	script2Arg := `
for i := 0; i < N; i++ {
	callable(i, i)
}
`
	var callable = func() *tengo.UserFunction {
		return &tengo.UserFunction{Name: "user_func",
			Value: func(args ...tengo.Object) (tengo.Object, error) {
				return nil, nil
			}}
	}

	b.Run("NoArg", func(b *testing.B) {
		s := tengo.NewScript([]byte(scriptNoArg))
		s.Add("N", b.N)
		s.Add("callable", callable())
		c, err := s.Compile()
		if err != nil {
			b.Fatal(err)
		}
		b.ResetTimer()
		err = c.Run()
		b.StopTimer()
		if err != nil {
			b.Fatal(err)
		}
	})

	b.Run("1Arg", func(b *testing.B) {
		s := tengo.NewScript([]byte(script1Arg))
		s.Add("N", b.N)
		s.Add("callable", callable())
		c, err := s.Compile()
		if err != nil {
			b.Fatal(err)
		}
		b.ResetTimer()
		err = c.Run()
		b.StopTimer()
		if err != nil {
			b.Fatal(err)
		}
	})

	b.Run("2Arg", func(b *testing.B) {
		s := tengo.NewScript([]byte(script2Arg))
		s.Add("N", b.N)
		s.Add("callable", callable())
		c, err := s.Compile()
		if err != nil {
			b.Fatal(err)
		}
		b.ResetTimer()
		err = c.Run()
		b.StopTimer()
		if err != nil {
			b.Fatal(err)
		}
	})
}