GoLangsync.Pool简介与用法

type Student struct {
   Name   string
   Age    int32
   Remark [1024]byte
}
func main() {
   var studentPool = sync.Pool{
      New: func() interface{} {
         return new(Student)
      },
   }
}

type Student struct {
   Name   string
   Age    int32
   Remark [1024]byte
}
var buf, _ = JSON.Marshal(Student{Name: "lxy", Age: 18})
func Unmarsh() {
   var studentPool = sync.Pool{
      New: func() interface{} {
         return new(Student)
      },
   }
   stu := studentPool.Get().(*Student)
   err := json.Unmarshal(buf, stu)
   if err != nil {
      return
   }
   studentPool.Put(stu)
}

package benchmem
import (
   "encoding/json"
   "sync"
   "testing"
)
type Student struct {
   Name   string
   Age    int32
   Remark [1024]byte
}
var buf, _ = json.Marshal(Student{Name: "lxy", Age: 18})
var studentPool = sync.Pool{
   New: func() interface{} {
      return new(Student)
   },
}
func BenchmarkUnmarshal(b *testing.B) {
   for n := 0; n < b.N; n++ {
      stu := &Student{}
      json.Unmarshal(buf, stu)
   }
}
func BenchmarkUnmarshalWithPool(b *testing.B) {
   for n := 0; n < b.N; n++ {
      stu := studentPool.Get().(*Student)
      json.Unmarshal(buf, stu)
      studentPool.Put(stu)
   }
}